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Acarologia

A quarterly journal of acarology, since 1959Publishing on all aspects of the Acari

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REVISION OF THE GENUS KAMPIMODROMUS NESBITT, 1951

(PARASITIFORMES, PHYTOSEIIDAE),

WITH A DESCRIPTION OF A NEW SPECIES *

BY S. RAG USA DI CHIARA ** and H. TSOLAKIS **

SYSTEM A TICS ABSTRACT : In the present paper the Authors revise the genus Kampimodromus Nesbitt, 1951. A new species is also described.

SYSTEMATIQUE REsUME: Les Auteurs proposent une revision du genre Kampimodromus Nesbitt, 1951 et decrivent aussi une espece nouvelle.

INTRODUCTION

Phytoseiid mites are considered important biotic control agents of phytophagous mites.

As many species have been described up to now, it would be worthwhile to order them according to natural lines. Quite often, in fact, the new species are described comparing them to other species which do not really belong to the same natural genus. It should be mentioned that little progress has been made in this direction up to now (ATHIAS-HENRIOT, 1977, 1978 ; ATHIAS-HENRloTand FAUVEL, 1981; RAGUSA and ATHIAS-HENRIOT, 1983; JUVARA-BALS, 1988). The present paper is a contribution to the application of the above concept and an attempt, previously started by CIULLA (1988), to revise the genus Kampimodromus.

MATERIALS AND METHODS

The following type materials have been exa­mined: Typhlodromus elongatus Oudemans (1930a),

Typhlodromus aberrans Oudemans (1930a), Ambly­seius keae Papadoulis and Emmanoue1 (1991), Amblyseius judaicus Swirski and Amitai (1961), Amblyseius molle Ueckermann and Loots (1985), Amblyseius alettae Ueckermann and Loots (1985), Kampimodromus hmiminai McMurtry and Boun­four (1989), and Kampimodromus langei Wainstein and Arutunian (1973).

As far as unavailable specimens are concerned, we tried to decide from the existing iconography whether they belonged to the genus Kampimo­dromus.

Observations were done using an interfe­rence contrast microscope. The organotactic ter­minology used was that described by ATHIAS­HENRIOT (1975) and by CHANT and YOSHIDA­SHAUL (1992). Sometimes some organotaxies and margins of shields were not reported in the drawings due to the condition of the speci­mens.

The material collected by us is deposited in the collection of the Istituto di Entomologia agraria, Universita di Palermo (Italy).

* Work supported in part by C.N.R and in part by M.A.F. in the context of the P.F. M.A.F. Program" Biological and integrated control against pests of crops and forests. " Working group: Biological control.

** Istituto di Entomologia agraria, Universita di Palermo, Viale delle Scienze - 90128 Palermo, Italy.

Acarologia, t. XXXV, fasc. 4, 1994.

-306-

Genus Kampimodromus

Type species Typhlodromus aberrans Oudemans, 1930a.

The genus Kampimodromus was described by NESBITT (1951) who designated Typhlodromus elon­gated Oud. (1930a) as the type of the genus.

We borrowed this type species from the Rijks­museum van Natuurlijke Historie (Leiden) to exa­mine it. In Table 1 we report measurements of setae.

For several years we have collected a species at weekly intervals on Corylus at Polizzi (PA), which is present all year around under two different forms: one during summertime which has longer, thicker and serrated setae, and is identical to K. elongatus (see Table 1), and another one during winter­time which has shorter, less thick and less serrated setae.

K. elongatus K. elongatus K. aberrans K. aberrans

2 3 4

j1 22 21 (19-24) 20 (19-22) 19 (15-20)

j3 17 (17-22) 16 (12-19) 16 (12-19)

j4 16 17 (15-19) 13 (12-17) 15 (12-17)

j6 17 21 (19-27) 18 (15-20) 17 (15-19)

J2 24 31 (24-41) 26 (22-29) 25 (24-27)

j2 40 37 (34-43) 31 (29-34) 31 (29-32)

z3 34 33 (29-37) 28 (24-31) 29 (27-32)

z4 40 43 (39-49) 35 (32-37) 35 (32-37)

s4 58 55 (51-61) 42 (39-44) 42 (37-44)

21 20 23 (19-31) 20 (17-22) 19 (17-22)

S2 57 53 (48-60) 41 (39-44) 42 (39-46)

S5 14 16 (14-19) 12 (10-14) 13 (10-15)

25 56 57 (54-61) 41 (37-44) 41 (39-44)

j5 17 (15-20) 15 (12-17) 14 (12-15)

24 51 51 (47-56) 39 (36-41) 38 (34-41)

JV5 29 32 (29-34) 26 (24-27) 25 (24-26)

r5 46 41 (36-44) 35 (34-39) 35 (31-36)

R1 28 26 (24-29) 22 (20-26) 23 (20-27)

Lva 112 98 (92-109) 96 (88-99) 97 (88-102)

Lva pre 53 46 (41-51) 46 (43-49) 46 (44-48)

Ds 333 308 (292-340) 305 (296-311) 310 (299-323)

StlV 20 25 (24-27) 20 (19-22) 20 (19-21)

Inguinal sigil. 26 (20-29) 27 (24-31) 24 (20-27)

Mov. digit. (teeth) 0 0 0

N° Solenostomes 4 4 4 4

1. Holotype - 2, 4. Collected at Polizzi (Pa1ermo) - 3. Collected at Arnhem (The Netherlands).

TABLE 1 : Biometric data of Kampimodromus elongatus and Kampinodromus aberrans (in [Lm).

OUDEMANS (1930a) described another new spe­cies, Typhlodromus aberrans, similar to K. elongatus taking nymphs into account. The translated des­cription as well as the drawings by OUDEMANS (plate nO 362) were reported by NESBITT (1951). We also borrowed two slides of the type material of K. aberrans. It was impossible to check the slide containing the deutonymph, because the specimen

was not well cleared, some setae were broken, some were missing, solenostomes and poroides were impossible to see, and the ventral side was indis­cernible. The movable digit of chelicerae clearly did not bear any tooth. The protonymph on the other slide was in better condition and four pairs of solenostomes are clearly present (gdl, gd2, gd6 and gd9) , while three solenostomes are reported (gdl,

-307-gd2 and gd6) in the drawing by OUDEMANS (in NESBITT, 1951). Moreover, it is possible to see the solenostome gv3 in the ventral side, which is not shown in OUDEMAN'S drawing.

According to CHANT (1955), and also in our opinion, the two forms (elongatus and aberrans) belong to the same species, which show a different habitus in relationship to the season. However, he found, in contrast with us, the form we found in summer during winter and vice versa.

As the types of aberrans are young stages, we tried to collect the adults corresponding to these immatures in the same park (Arnhem) where, according to VAN EYNDHOVEN (personal communi­cation, 1987), OUDEMANS collected this species on Tilia platyphyllos. But, as no aberrans were found on this plant, we tried to collect on Corylus sp. in the same place. Young stages similar to the nymphs of aberrans, especially as far as the number of solenostomes on the dorsal shield is concerned, were then collected and adults corresponding to these stages were also collected.

During our weekly collections in Polizzi, we found both young stages on Corylus identical to the type material described by OUDEMANS (1930a) and collected by us at Arnhem, and adults which were identical to the ones collected by us at Arnhem (see Table 1).

Afterwards OUDEMANS (1930b) described another species, Typhlodromus vitis. The type material of this species is lost, as the slide checked by us was empty. Therefore the only evidence we have to determine this species is the original description (OUDEMANS, 1930b) and the drawings by OUDEMANS in the collection of the Leiden museum (Plate 408), also reported by NESBITT (1951). According to this evidence, NESBITT (1951) affirmed that" It (aber­rans) and T. vitis are so remarkably alike that I am almost persuaded that vitis is the adult of aber­rans ". However he concluded that, to be certain, nymphal forms of vitis and adults of aberrans had to be available.

CHANT (1955) collected many specimens in Kent which agreed with the description of T. vitis by OUDEMANS. He bred this species and comparing the young stages to the type materials of aberrans concluded that the two species were synonyms, and

that therefore" three names, T. aberrans, T. vitis, and T. elongatus exist for this species" (CHANT, 1955).

In our opinion the drawings by OUDEMANS are not sufficient to determine T. vitis, as many impor­tant characters and the insemination apparatus are not reported: As a consequence we think that T. vitis has to be considered as a lost species.

Our study shows that the adults found at Arn­hem on Corylus are identical to the adult forms found at Polizzi during wintertime and, as two forms of the same species are present in summer and in winter, we can say that K. elongatus = K. aberrans, and K. aberrans has to be maintained as it has page priority.

In 1961 MUMA described the new genus Paradro­mus and he put Typhlodromus aberrans as type species. From the description he gave, it appears that this genus has to be considered as synonym of the genus Kampimodromus Nesbitt, 1951.

Composition

Several species do not agree with the description of the genus Kampimodromus for many characters:

1) Amblyseius heveae Oudemans (1930b) does not have setae J2 and S5, the peritreme reaches the base of setae)1 and three macro setae are present on leg IV;

2) Amblyseius oudemansi Chant (1959) shows absence of setae J2 and Z1 and presence of two teeth on the movable digit;

3) In Amblyseius chergui Athias-Henriot (1960) the dorsal shield shows deep striae, only two pairs of solenostomes are present (gd2 and gd9) , peri­treme is short;

4) In Amblyseius maritimus Ehara (1967a) setae J2 are absent, the peritreme extends beyond setae )1, in the opisthogastral shield gv3 is absent, three capitate macro setae are present on leg IV ;

5) Okiseius subtropicus Ehara (1967b) lacks setae J2, and the peritreme extends forward to setae)1 ;

6) In Okiseius alniseius Wainstein and Begljarov (1972) setae J2 are absent; dorsal shield is well sclerotized with prominent sculptures, the peritreme reaches )1, two teeth are present on movable digit,

-308-

b c c c

g)/ 20fJ

FIG. 1 : Kampimodromus spp. female insemination apparatus.

a. - K. langei. b. - K. aberrans. c. - K. ericinus d. - K. keae. e. - K. judaicus. f. - K. hmiminai. g. - K. mol/e. h. - K. alettae.

and three knobbed macro setae are present on leg IV;

7) In Amblyseius trichophilus Blommers (1976) setae S4 are present and the peritreme reaches the bases of setae j 1 ;

8) Kampimodromus kostini Kolodochka (1979) shows the dorsal shield deeply striated, two sole­nostomes present (gd2 and gd9) , setae 21 and S2

not close to each other, short peritreme;

9) Kampimodromus kuznetzovi Kolodochka (1979) has the dorsal and opisthogastral shields strongly striated and two pairs of solenostomes (gd2 and gd9), peritreme short;

10) In Amblyseius hymetticus Papadoulis and Emmanouel (1991) the dorsal shield is striated and bears two pairs of solenostomes, setae 21 and S2

not close to each other, peritreme short;

11) Amblyseius marzhaniani Arutunian (1969), according to the original description (as we did not receive the type material from ARUTUNIAN), has a very short peritreme, setae 21 and S2 not close to

each other, and different ornamentation on dorsal shield;

12) Amblyseius cataractus Ueckermann and Loots (1988) has setae S4, a long peritreme (rea­ching j1) and gv3 probably absent.

Dubious species

Amblyseius hevearum Oudemans (1930b) was described from one male collected in Sumatra; apparently the female has not been described.

DEFINITION OF THE GENUS KAMPIMODROMUS

Nesbitt, 1951

(= Paradromus Muma, 1961)

Insemination apparatus (Fig. 1)

Receptaculum slightly differentiated. Adductor duct cylindrical, simple, long almost more than twice the maximum width of the calyx. Atrium

-309-

0 0

" ... ---- 0

\ ~ '--.\ fI~

0 (f)

'-0 ? / \

0 I). r \. 0

" ) b

f

lOOfJ

a

FIG. 2 : Kampimodromus hmiminai, paratype female, dorsal shield (a), ventral side (b).

almost globulose, club-shaped, not inserted in the calyx. Accessus not differentiated; embolus promi­nent as well as the spermatic channel. Calyx hemispherical, bell-shaped and thick-walled, with a slight incision in the median part.

Related characters

Adenotaxy mono deficient (gd5 absent). Solenos­tomes gd1 , gd4 and gd8 metatactic; when gd1 is present it is closer to j2 and the line j2-gd1~ z3 shows a slightly obtuse angle. When gd8 is present it is anterior or anteroparaxial to Z4. Dorsal scutum (Figs. 2a-9a) coriaceous, slightly

ornamented with striae in the anterior lateral part, more often in the region included between setae j6-S2-Z4; polygonal cells sometimes pre­sent in this part. Line j3-gd2-z4 forms an angle of about 90° ; gd6 anteroparaxial to Zl. s4 equal or slightly longer than z4; S2 equal or slightly lon­ger than Z4. The line z3-id2-z4 nearly forms an angle of 90° ; the line gd2-z4-id2 forms an angle of almost 180°; id2 closer to z4 than z3. Solenos­tome gd9 anteroparaxial to S5. Most setae are serrated.

The peritreme is between the bases of setae j2 and z3, usually closer to z3, or between z3 and z4, closer to z3 (Figs. 2a-9a).

-310-Sternal shield (Figs. 3b-6b, 8b, 9b) smooth, almost

as long as wide, setae ST3 hoplochorous 1, in one case it is tylochorous 2 (Fig. 3b) ; setae ST4 and iv3 tylochorous. Epigynium (Figs. 2b-6b, 8b, 9b) with a straight posterior margin, almost as large as the opis­thogastral shield, sometimes larger. Inguinal sigil­lum (Figs. 2b-5b, 7b-9b) elongate. Genital sigilla of 4th and 5th pairs linear, well visible; sigillum sgpa (6th pair) tylochorous and closer to setae ZVi than to opisthogastral shield (Figs. 2b-9b).

Opisthogastral shield (Figs. 2b-9b) subrectangu­lar longer than wide, sometimes enlarged in the preanal region, slightly waisted, anterior margin straight, ornamented with few striae, carrying from one (JV2) to three pairs (JVi , JV2 and ZV2) of preanal setae; in case of presence of one or two pairs of preanal setae, the remaining setae (JVi, JV2 and JVi respectively) are usually in the interscutal membrane (Figs. 2b, 7b); the solenos­tome gv3 is small, punctiform, posteroparaxial to setae JV2 (primitive condition), rarely posteroan­tiaxial to JV2 and the line gv3-JV2-ZV2 forms an angle of 1800

; it rarely forms an obtuse angle. Ratio length/width varying from 1,7 to 2,6. Cheli­cerae paucidentate : movable digit unidentate or without teeth, fixed digit with 2-3 teeth. Basitarsus IV with a dif-ferentiated macroseta.

Key to species

1. Six pairs of solenostomes present on dorsal shield (Fig. 2a); ratio S2/Z1 = 6.8; one pair ofpreanal setae (Fig. 2b) . . . .. . . . . . . . . . . . . . . . . . . . . . .. K. hmiminai

- Less than six pairs of solenostomes ; ratio S2/Z1 ranging from 1.2 to 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. Three pairs of solenostomes (gd2, gd6, gd9) present on dorsal shield (Fig. 3a) ; gd9 posteroparaxial to S5 (Fig. 3a) ; gv3 posteroantiaxial to seta JV2 . .... . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. K. judaicus

- Four-five pairs of solenostomes on dorsal shield; gd9 anteroparaxial to S5 (Figs. 4a-9a) . . . . . . . . . . . . . .. 3

3. Four pairs of solenostomes on dorsal shield. . . .. 4 - Five pairs of solenostomes on dorsal shield . . . . . . 6

4. Ratio S2/Z1 = 1.9; one tooth on movable digit of chelicerae ; apex of peritreme close to z4 (Fig. 4a) ; short, pointed macroseta on basitarsus IV.. K. keae

1. An organ situated on a shield. 2. An organ situated on a microsclerite.

- No teeth on movable digit ; apex of peritreme closer to z4 ... ............ . . .. . ... ..... .............. 5

5. Few striae on dorsal shield (Fig. 5a) ; solenostome gd9 very close to S5 (Fig. 5a) ; ratio S2/Z1 = 2 .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K. aberrans

- Dorsal shield reticulated especially in the posterolate­ral region (Fig. 6a) ; gd9 not close to S5 (Fig. 6a) ; ratio S2/Z1 = 1.3 ; longer macroseta than in 5, on basitarsus IV . . . . . . . . . . . . . . . . . . . . . . . . . . .. K. molle

6. Strong reticulation on the posterolateral regions of dorsal shield, while few striae are present anterolate­rally (Fig. 7a) ; apex of peritreme closer to j2 (Fig. 7a) ; two pairs of preanal setae (Fig. 7b) ; in the insemina­tion apparatus, the atrium is prominently bulbous (Fig. 1h). ... . . . . . . . . . . . . . . . . . . . . . . . . . . . K. alettae

- Dorsal shield slightly striated ; apex of peritreme close to z3; three pairs of preanal setae. . . . . . . . . . . . . .. 7

7. Solenostomes gd2 quite big and crateriform (Fig. 8a) ; ratio S2/Z1 = 1.9 ; epigynium as large as the opistho­gastral shield (Fig. 8b) ; one tooth on movable digit ; slightly knobbed, not serrate macroseta on basitar-sus IV .. .. ... .... . . . .. . ... . . ........ ... K. langei

- gd2 smaller than in 7 (Fig. 9a) ; ratio S2/Z1 = 1.6; epigynium larger than opisthogastral shield (Fig. 9b) ; no tooth on movable digit; pointed and serrate macroseta on basitarsus IV. . . . . . . K. ericinus n. sp.

Kampimodromus hmiminai McMurtry and Bounfour, 1989.

(Figs. If, 2a, b)

Kampimodromus hmiminai McMuRTRY and BOUNFOUR,

1989.

Dorsal shield with slight reticulation in the anterolateral region; few striae present in the posterolateral part; the remaining part of the shield is almost smooth; six pairs of small solenostomes are present. This is the biggest species in the group. Ratio S2/Zi = 6,8; Z5/Z4 = 1,1. Measurements of setae in Table 2. The epigynium is wider than the opisthogastral shield ; the latter is slightly suboval and carries only one pair of setae; the six remaining pairs are situated on the interscutal membrane. Ratio length/width of the opisthogaster = 1,9. Peritreme almost at level of bases of setae z3. No tooth is present on the movable digit. A blunt and serrate macroseta is present on basitarsus IV.

-311-

o

--------

b FIG. 3 : Kampimodromus judaicus, paratype female, dorsal shield (a), ventral side (b).

Type locality and habitat: Holotype on fig at Sidi Benour (Morocco), April, 29, 1982; six paratypes same data as the holotype ; three additional para­types on fig at Agdaz (near Zagora), May, 11, 1982 and one paratype on fig at Taliouine, May, 12, 1982.

Kampimodromus judaicus (Swirski and Amitai), 1961.

(Figs. le, 3a, b)

Amblyseius judaicus SWIRSKI and AMITAI, 1961.

Dorsal shield ornamented mainly in the posterior

region. Setae Z1 are inserted almost at the same level of setae 82 (Fig. 3a) ; setae 85 are inserted not in the marginal part of dorsal shield (Fig. 3a). Three pairs of prominent, crateriform solenostomes are present ; gd9 are almost equidistant from setae 85 and Z4 and the line Z4-gd9-Z5 forms an angle of 180°. Ratio 82/Z1 = 1,2; Z5/Z4 = 1 ; measu­rements of setae are given in table 2. Width of epigynium almost as that of opisthogastral shield. Ratio length/ width of opisthogastral shield is 1,7. Peritreme almost reaching the bases of setae z3. No tooth on the movable digit; it should be mentioned

-312-

K. hmiminai K. judaicus K. keae K. aberrans K. molle K. aietlae K. iangei K. ericinus

2 3 4 5 6 7 8

jI 18,5 (18-19) 29 20 (19-22) 17 21 (17-24)

j3 15 (12-17) 31 16 (15-17) 16 (12-19) 27 19 17 22 (20-24)

j4 13 (12-14) 32 14,5 (14-15) 13 (12-17) 34 19 17 22 (20-26)

j6 18 39 16 (15-17) 18 (15-20) 32 22 17 30 (27-31)

J2 14 (12-15) 48 20 26 (22-29) 42 27 24 36 (32-38)

j2 47 (44-49) 39 29 31 (29-34) 36 32 27 32 (29-37)

z3 34 (31-37) 37 29 (27-31) 28 (24-31) 30 34 29 32 (29-37)

z4 53 (51-54) 46 33 (32-37) 35 (32-37) 41 37 32 42 (37-46)

s4 76 (75-77) 53 38 (37-39) 42 (39-44) 51 46 34 49 (46-54)

ZI 14,5 (14-15) 49 20 20 (17-22) 36 31 20 32 (29-37)

S2 81 (75-88) 53 37 (36-38) 41 (39-44) 48 48 37 52 (49-54)

S5 12 (10-15) 54 22 12 (10-14) 19 17 20 24 (22-26)

Z5 75 (73-77) 56 33 (31-34) 41 (37-44) 41 76 51 47 (46-54)

j5 14,5 (14-15) 36 14,5 (14-15) 15 (12-17) 26 20 17 20 (18-22)

Z4 84 (82-87) 56 31 (29-32) 39 (36-41) 39 48 43 43 (39-46)

JV5 30 (24-34) 44 26,5 (26-27) 26 (24-27) 24 37 32 36 (31-39)

r5 42 (41-43) 48 36,5 (36-37) 35 (34-39) 37 37 37 41 (37-44)

RI 30 (26-34) 44 25 (22-27) 22 (20-26) 22 26 31 31 (26-34)

Lva 90 (88-92) 104 87 (85-88) 96 (88-99) 85 87 95 95 (90-100)

Lvapre 48,5 (48-49) 60 45 (44-48) 46 (43-49) 34 51 37 48 (43-53)

Ds 356 (355-357) 323 273 (272-275) 305 (296-311) 270 289 294 289 (272-303)

StIV 25 (24-26) 19 13 (12-14) 20 (19-22) 31 20 24 26 (22-31)

Inguinal sigil. 25 (24-26) 26 25 (24-26) 27 (24-31) 27 24 (20-27)

Mov. digit(teeth) 0 0 0 0 1 0

N° Solenostomes 6 3 4 4 4 5 5 5

I. Paratypes - 2. Paratype - 3. Type material - 4. Topotypic material- 5. Holotype - 6. Holotype - 7. Paratype - 8. Type material.

TABLE 2 : Distinguishing characters between species belonging to the genus Kampimodromus (Measurements in fLm) .

that SWIRSKI and AMITAI (1961) found one small tooth in one specimen only. A short (Table 2) and not serrate macroseta is differentiated on tarsus IV.

Note: This species shows few differences in com­parison to the other species belonging to the genus Kampimodromus. They are: a) the position of setae S5 and Z1 on dorsal shield; b) the position of solenostomes gd9, and the tylochore position of setae ST3.

Type locality and habitat : Holotype and four paratypes on Salvia sp. at Aqua Bella (Judean Hills), April, 5, 1961.

Kampimodromus keae (Papadoulis and Emmanouel, 1991)

(Figs. Id, 4a, b)

Amblyseius keae PAPADOULIS and EMMANOUEL, 1991.

Dorsal shield slightly striated with four pairs of solenostomes ; gd2 is the biggest and crateriform ;

gd6 and gd9 are also crateriform but smaller; gd1 is the smallest and punctiform. Solenostome gd9 very close to the base of setae S5. Measurements of the setae are given in Table 2. Ratio length/width in the opisthogastral shield is 1,9. Peritreme between the base of setae z4 and s4, closer to z4. Movable digit with one tooth. Macroseta pointed and short (see Table 2).

Type locality and habitat : Holotype and 30 paratypes on Quercus aegilops at Kea island in the Aegean sea, October, 2, 1988.

Kampimodromus aberrans (Oudemans, 1930) (Figs. 1 b, 5a, b)

Typhlodromus aberrans OUOEMANS, 1930a.

Dorsal shield with four solenostomes, the biggest IS

Ratio S2/Z1 = 2; Z5/Z4

pairs of prominent the crateriform gd2. 1. Margins of epigy-

-313 -

b 100tJ ,

FIG.4' . a . Kamplmad ramus keae h I , ootyp d e, orsal shield (a), ventral side (b).

-314-

e

- I ~

C)

@ 0

/ ~ \

~ J e

r b

FIG. 5 : Kampimodromus aberrans, topotypic female, dorsal shield (a), ventral side (b).

nium posterior to ST5 convex. Epigynium as width as the opisthogastral shield. Shape of opisthogastral shield and number of preanal setae as in Fig. 5b; sometimes the shape is slightly variable and setae ZV2 are in the interscutal membrane (Fig. 11). Ratio length/width of opisthogastral shield = 2,1. For measurements of setae see Table 1 and 2. Peritreme between the base of setae j2 and z3, closer to z3. Movable digit without teeth. A pointed macroseta present.

Male : Smaller than female; dorsal shield (Fig. lOa) more coriaceous and more ornamented than the one of the female; solenostomes gd2 crescentic,

greatly enlarged, covered with a tiny tectum; opisthogastral shield (Fig. lOb) subtriangular; three pairs of setae on it ; one pair of setae on interscutal membrane; cingulum present; sperma­to stylus L-shaped (Fig. 10c); ratio S2/Z1 = 1,8; Z5/Z4 = 1,1; setae s4 = 47 (44-49); Z1 = 26 (24-29) ; S2 = 44 (41-49) ; Z5 = 42 (39-48) ; J2 =

29 (26-34) ; Z4 = 40 (37-44) stIV = 23 (20-26). Type locality and habitat : Holotype, a nymph I

do.ve., Museum Leiden Cat. N° I on Tilia platy­phyllos at Arnhem; topotypic female 1021 b, and male 1021f on Corylus sp. at Arnhem, July, 12, 1987.

-315-

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I (J) ~

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FIG. 6 : Kampimodromus mol/e, holotype, dorsal shield (a), ventral side (b).

Distribution: K. aberrans was reported in various parts of the world : England, Spain, Algeria, Bulgaria, Canada, Germany, Greece, Hungary, Israel, The Netherlands, Poland, Portugal, Switzer­land, Turkey, California, C.I.S., Jugoslavia (DE

MORAEs, McMURTRY, DENMARK, 1986). But it should be mentioned that, while it is certain that the species collected belong to the genus Kampimodro­mus (according to the iconography given by different authors), it is not certain that the species are really K. aberrans. This species was collected by us at Scillato (Palermo) and Bocchigliero (Cosenza)

on Quercus sp., Feb. 9, 1973 and June, 20, 1990; Palermo, on Avocado and Malva sp., March, 16, 1974 and May, 15, 1979; at Trecastagni (Catania) on Quercus cerris, September, 20, 1990; at Campofiorito (Palermo) on Rosa sp., May, 2, 1990; at Bocale (Reggio Calabria) on Morus nigra, Nov. 10, 1988; at S. Giovanni in Fiore (Cosenza) on Sorbus sp., July, 13, 1988 ; at Aprigliano (Cqsenza) on Fagus sylvatica, July, 14, 1988; at Portici (Napoli) on Diospyrus kaki, Sept., 1977; at Puti­gnano (Bari) on Corylus avellana, Apr. 25, 1983; at Lusciano (Caserta), Solopaca (Benevento) and

-316-

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a FIG. 7 : Kampimodromus alettae, holotype, dorsal shield (a), ventral side (b).

-317-Assisi (Perugia), June, 23, 1986, July 17, 1986 and Kamprimodromus alettae

(Ueckermann and Loots, 1985) Apr., 20, 1987 respectively; at Cerveteri; (Roma) on Ficus carica and Ulmus sp. Aug. 11, 1977; at Veio (Roma) on Quercus sp., Aug. 10, 1977; at Massa on Ficus carica, Aug. 12, 1979; at Monte­catini (Firenze) on Quercus sp. , Aug. 24, 1990; at Mantova on Platanus sp. Aug, 3, 1977; at Grisi­gnano (Padova) on Liquidambur styracifolia, Aug., 4, 1977; at Valsansibio (Padova) on Acer sp. Aug. 7, 1977; at Desenzano (Brescia), Aug. 2, 1977; at Bristol (England) and Pula (Jugos­lavia) on Ficus carica, Aug. 24, 1982 and Aug., 25, 1985; at Stone (England), Aug., 4, 1985; Kifissia (Greece) on Castanea sativa, June, 28, 1976.

Kampimodromus molle (Ueckermann and Loots, 1985)

(Figs. Ig, 6a, b)

Amblyseius (Kampimodromus) molle UECKERMANN and LooTs, 1985.

Dorsal shield ornamented with striae in the anterolateral region and with more regular cells in the posterolateral regions. Four pairs of small solenostomes on dorsal shield; ratio S2/Z1 = 1,3 and Z5/Z4 = 1; setae S5 not situated on the margin of the dorsal shield (Fig. 6a) ; solenostomes gd9 anteroparaxial to S5 and situated at 1/3 of distance between setae S5 and Z4 ; gv3 small and not well discernible. Measurements of setae are given in Table 2. Epigynium slightly larger than the opisthogastral shield. The ratio length/width of the latter is 2,5. Peritreme between j2 and z3, closer to the latter. According to UECKERMANN and LOOTS (1985), no teeth are present on the movable digits of the chelicerae : we could not check this, as they were not clear in the specimen we received. Macro­seta pointed and long (Table 2).

Type locality and habitat : Holotype, one para type and allotype from Combretum molle in Moria (Lebowa, South Africa), May, 8, 1981; another para type female and two para type males on the same plant in Blyde River Nature Reserve (Transvaal, South Africa) on Feb. , 21 , 1978.

(Figs. Ih, 7a, b)

Amblyseius alettae UECKERMANN and LooTS, 1985.

The insemination apparatus (Fig. Ih) has a smaller calyx in comparison to that of K. aberrans (Fig. 1 b); the atrium is prominent and bulbous. Dorsal shield ornamented with striae anterolate­rally and with polygonal cells in the posterior region. Five pairs of small solenostomes are pre­sent. Ratio S2/Z1 = 1,5; Z5/Z4 = 1,6. Solenos­tomes gd9 very close to setae S5. Measurements of setae given in Table 2. The epigynium is wider than opisthogastral shield; the latter carries two pairs of preanal setae, while five pairs are present in the membrane surrounding the shield. Ratio length/ width of the shield is 1,7; gv3 small, punctiform, inserted just under bases of setae JV2. Peritreme between j2-z3 closer to j2. Movable digit of cheli­cera impossible to check. A macroseta is present on tarsus IV.

Type locality and habitat: Holotype on Tapinan­thus natalitius at Rustenburg Nat. Res. (Transvaal, South Africa), November 7, 1979.

Kampimodromus langei Wainstein and Arutunian, 1973

(Figs. la, 8a, b)

Kampimodromus langei WAINSTEIN and ARUTUNIAN, 1973.

Dorsal shield (Fig. 8a) ornamented ; five pairs of prominent solenostomes on dorsal shield, gd2 being the largest and crateriform; ratio S2/Z1 = 1,9 Z5/Z4 = 1,2; solenostomes gd9 very close to the base of setae S5. Measurements of setae are given in Table 2. Width of epigynium almost as that of opisthogastral shield (Fig. 8b) ; the latter has a ratio length/width = 2,6. Solenostomes gv3 small, punc­tiform. Peritreme between j2 and z3, closer to z3. Movable digit of chelicera with one tooth. Macro­seta on St IV slightly knobbed.

-318-

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, FIG. 8 : Kampimodromus langei, paratype female, dorsal shield (a), ventral side (b).

Type locality and habitat : Holotype from Quer­cus sp. in the Stepanavan region, Armenian SSR, June 10, 1971.

Kampimodromus ericinus n. sp.

(Figs. 1c, 9a, b)

Dorsal shield with five pairs of prominent crate­riform solenostomes ; gd2, gd6 and gd8 quite large; gd1 and gd9 smaller. Ratio S2/Z1 = 1,6; Z5/Z4 =

1,1 ; ratio length/width of opisthogastral shield = 2. Length of setae is in Table 2. Margins of the

epigynium posterior to setae ST5 almost straight and parallel, but divergent distally. The width of opisthogastral shield is smaller than that of the epigynium. Peritreme between j2-z3 closer to z3. Dm without teeth. Pointed macroseta present.

Type locality and habitat: Holotype (I 1533 C) on Rubus sp. at Sorianello (Catanzaro) on June, 22, 1990. Seventeen additional paratypes were collected at : Erice (Trapani) on Quercus ilex and Quercus sp., Oct. 7, 1990; Bocchigliero (Cosenza) and Montecatini (Firenze) on Quercus sp., June 20, 1990 and August 24, 1990 respectively and Sufli (Greece) on Quercus sp. 25, 1990.

-319-

100 ...

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b~ FIG. 9 : Kampimodromus ericinus n. sp., holotype, dorsal shield (a), ventral side (b).

Justification-K. ericinus resembles K. langei, but can be differentiated from it by the different length of setae j6, J2, z4, s4, Z1, S2 (see table 2), absence ' of tooth of Dm, pointed and serrate macroseta, different shape of margins of epigynium posterior to setae ST5, smaller gd2.

LIVSHITZ and KUZNETZOV report for Crimea Kampimodromus aberrans which in our opinion should be considered as Kampimodromus ericinus : as a matter of fact, comparing measurements and the drawing of K. aberrans (see LIVSHlTZ and KUZNETZOV, 1972, p. 43) with the new species, no differences were noticed.

ACKNOWLEDGEMENTS

The authors are deeply indebted to the following scientists who supplied material : P. J. van HELS­DINGEN, Rijksmuseum van Natuurlijke Historie, Leiden (The Netherlands); E. A. UECKERMANN, Plant Protection Research Institute, Pretoria (South Africa); G. Th. PAPADOULIS, Laboratory of Agri­cultural Zoology and Entomology, Agricultural University of Athens (Greece); L. A. KOLODO­CHKA, Institute of Zoolgy, Kiev (C.S.!); J. A. McMURTRY, Department of Entomology, Univer­sity of California, Riverside (U.S.A.) ; E. SWIRSKI,

-320-

~ o N

b

FIG. 10 : Kampimodromus aberrans allotype, dorsal shield (a), opisthogastral shield (b), spermatostylus (c).

A.R.O., Volcani Center, Bet Dagan (Israel). Thanks are also due to Mr. V. CIULLA who prepared the slides and Mrs E. CHIAVETTA who checked the typescript.

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-321-

100~

FIG. 11 : Kampimodromus aberrans females : different shapes of opisthogastral shields.

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Paru en Decembre 1994.