new england.--ii.--tryx- iii.downloads.hindawi.com/journals/psyche/1896/074048.pdfseen in the living...

[May x896.

NOTES ON THE ACRIDIDAE OF NEW ENGLAND.--II.--TRYX-ALINAE.-- III.

BY ALB]RT P. MORSE, W’ELLISLEY, MASS.

Pseudopomala brachyptera (cont.). season. About I5O specimens, chieflycollected in person, are from Frye-Ha3its, etc. This peculiar locust is burg, Me. Florence (S. W. Denton),not uncommon locally on the coarser Provincetown, Sherborn, Sudbur’,grasses found in waste lands, especially Wellesley, Winchendon, and West

upon a species of bunch-grass (Andro- Chop, M. V., Mass. Canaan, Northpogon scoparius) everywhere abundant. Haven, and Thompson, Conn. ItI have taken it also on beach-grass doubtless occurs in all of the Newat Provincetown, and upon timothy. England States. The long-wingedThough a good leaper and fairly active form, while not common, can scarcelyit is not shy and seeks safety in be called rare. 2 o, 7 ?,specimensattempting to escape observation by were taken in each case in companysidling around the grass-stems rather with the usual form. I have also anthan by active retreat. I once saw additional o* captured by Mr. C. J.a long-winged female fly several feet, Maynard at Newtonville, Mass., andproving that with the possession of Mr. Scudder has one from Iowa.the means came the power of flying.Its sluggish habits, however, in con-

nection with its linear form, renderit less likely to attract the attention ofits enemies, and to the biologist it is

perhaps the most interesting of our

TRYXALIS Fabr.

(’- Metaleptea Brunner.)2t’ruxalis Fabricius 1775. S. Ent.,

p. 279.locusts on that account. It must be According to priority, as stated byseen in the living state to have its full Brunner himself (Revision, p. I8),beauty appreciated. The singular, this name should be retained for thisalmost grotesque, yet graceful form genus. The genus is out of place ininterests even the casual observer, and Brunner’s table since the apical anglesits coloration of lilaceous drab, giving of the hind femora are not produced.it almost the appearance of beingclothed with a delicate bloom, pleases Tryxalis brevicornis Linn. Figs. A,the most fastidious eye. Aa, Ab.

I have taken young specimens atvarious times in June tnd July and Gryllus 3revicornis. Linn6, Cent.adults from July IO to Sept. 3" It is Ins. p. 15, 37,--1763.likely to be met with, however, a week tyrgomorha 3revicornis. Thomas,earlier and some time later in the 67

May 1896.] PSI<’CHE. 383

Pyrgomor2bha punctibennis. Thom-as, 68 (?).

Truxalis brevicornis. Beutenmttller,29t.This species has been taken on Long

Island in the near vicinity of :New Yorkby Mr. Beutenmttller and will verylikely be found in Conn. It will bereadily determined by the charactersgiven in the key. In coloration it isvery similar to Dichromorpha viridis,the o being either brown, or greenabove with dark brown sides, and the9 either bro,vn or green with a duskyline along the dorsal part of the sidesof the pronotum which is continued onthe head to the eye. It is found locallyin the tall grass of swamps.The following measurements are

from Indiana specimens received fromProf. Blatchley.Antenna. Hind fem. Teg. Teg.>Hind fem. Body. Total

14 3-4 18-2o 20-283 32-35 38-44

6. DICHROMORPHA gen. nov.

Type: Chloealtis vdriclis Scudd.The systematic position of this genusand its more important diagnostic char-acters have been indicated in Brunner’sRevision under the name of Chloealtis(to which the type species has errone-

ously been referred), and to some extentin the preceding key. The type speciesis well described in Thomas, p. 75"

7. Dichromorpha viridis Scudd.Figs. 7, 7a, 7b.

Chloealtis viridis. Scudder, 455,--862.

CMoealtis viridis. Smith, Orth.Conn., 374. Fernald, 36. Morse, I4,lO4. Beutenmfiller, 292.

Chrysochraon viridis. Thomas, 7.5.

Long-winged form, punctulata.

Chloealtis bunctulata. Scudder,455.

Chloealtisbunctulata. Fernald, 36." viridis var. unctulata.

Morse, t4, Io5.Chloealtis viridis vat. bunctulata.

Beutenmfiller, 9z.Chrysochraon punctulatum. Thom-

as, 77’Is not this Trux. angusticornls Stl.

from S. Car. (Rec. orth., o6)?The chief points of interest to be

noticed here concerning this speciesare those connected with its dimorphismin form and color. There is no doubtthat the unclulala form is but a caseof reversion not uncommon in the fe-male. I have yet to see a male with teg-mina and wings reaching the end of thehind femora, that is to say, a true punc-tulata male, though a variation of 5 percent. occurs in the length of the tegrnina,these measuring 6 to 9 ram. in length.The tegmina of the female are usually8 to IO tnm. long, and of the reversionalform 19 ram., but examples occur ofintermediate length, one having themI mm. Contrary to what is usuallystated both sexes are either green orbrown above, but brown males are onlyabout one-third as numerous as brownfemales. Of 33o N. E. adults in mycollection 20 are unctulata , 5 being

384 .PS2"CITE. [May x896.

brown and 5 green 56 are brown viri-dis, 3 , 43 9 ;o7 are green viridis, and the remaining ’47 are greenviridis .Antenna. Hind fem. Teg. Teg. <H. fern. Body0 6.5-8. 9.5-10.5 6- Q 4-5.5 15-16

-8 14 8--I9 0--8 23--:27(7--8 usually)

Body H. fem. Total.( --3 .5--15

+2 15’ 5-:6.5

This species is plentiful in south-western New England in the latter halfof the season, making its appearancelate in July and continuing until late inautumn. The earliest date on which Ihave captured it is _Aug. 4, at whichtime adults and young of both sexeswere numerous. It is found in oldpastures and mowing lands but prefersthose of a damp and heavy characterwhere the herbage is green throughoutthe season,-- this is perhaps the rea-

son of its more generally prevalentgreen coloration. In such situations ihave found it numerous in individualswherever taken. It is well protectedby its coloration and is a decidedlysluggish insect, rarely using its wings,even when fully developed, in escapingits pursuers. It is found throughoutConn., in R. I., and in central andsouthwestern Mass. It is said byScudder (Distrib. Insects N. H.) tohave been taken in southern N. H., butthis seems doubtful unless it possiblyoccurs there in the Conuecticut Valley.I have taken it at Palmer, Mass.;Wickford, R. I. and in Conn. at

Thompson, Montville, New Haven,Canaan, So. Kent, Stamford, andGreenwich, between the dates of Aug.4 and 3 Judging from collectionssent me by Prof. Fernald it is commonat Amherst, Mass.

NOTES ON THE TYPES OF PA.PI.RIUS T.EXE_/VSIS PACK. ANDDESCRIPTION OF A NEW SMN’THURUS.

BY JUSTUS WATSON FOLSOM CAMBRIDG] MASS.

Upon examining Packard’s types of P.texensis at the Museum of comparativezo/51ogy, the tube containing them wasfound to hold, not only fourteen specimensof a Papirius but also ten examples of aSmynthurus, and the original descriptionof P. texensis evidently combines the char-acters of both these species, which certainlydo resemble each other superficially. Itbeing necessary to separate the species in

question, I have retained the original namefor the Papirius, to which is applicable alarge part of the original description, quot-ing this part below with a few supplement-

a’y notes, and have characterized the otherspecies as S. backardit:, again quoting wherepossible. The type specimens, consideringthey are nearly twenty-five years old, arewell preserved, even in color.Papirius texensis Pack. Pale luteous

marbled with brown and black, head paler;a few short bristles above the mouth andon posterior dorsum; long stout hairs onvertex, anterior dorsum and sides of dentes.Eyes black. Antennae shorter than body,pale reddish brown, growing darker towardsthe end; segments nearly as x: 5: 5.5: 2;basal segment twice as long as broad, naked

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