Animal Kingdom v.4

Page 143

260 INSECTA. is triangular, Or is very long and narrow, and almost lanceolate, as in RAPHIUM, Meig.(l) In the following, or PonPHYROPs, Meig.(2) d "th a hairy seta; the first joint t · ngular an Wl I . securiform or ria ' t 1s . In is very short or indistinct. MEDETERUS, Fisc. Meig. . · le w1. th the fi rs t J. o int distinct and e1lo ngated. This seta 1s stmp ' tl e palette, is nearly ova • The last joint of the antennre, or 1 Bydrophortts-with those spe· M Macquart has formed a genus- . 1 Those in which the • · altogether termma • cies in which the seta lS e the genus Medeterus.(3). insertion is dorsal alone compos re is almost globular. The h. d · "nt of the antenn There, the t tr JOl • 1 we have the genus CHRYSO· seta is always h a.i ry. If it bed t ermmtha ' that of PstLoPus; and fi na ll y, . b . ted a little un ernea ' . h Tus; if lt e mser h base DIAPHORUS, whtc genus, . 1 down or near t e ' . h if it artse ower . nearl • entirely occupied by t e eyes, by the almost sphencal head, 1 dyto the family of the Platypezina 1 ears to us to ea d in the rna es, app . 11" d some other characters rawn of Meigen. The wmgs, oce I, fian those we have described. We ts of the head, con rm from the par . to similar details here( 4). cannot, however, enter m . f which Macquart has very The Platypezina of M. Meigen, rom d to which we unite that of Properly removed the genus OyrMtoma, anPHALt(5) consist of Diptera • f '} of the EGAOE t • Scenopina and his a~I y . tennre and wings to the Doh· 1 in their proboscis, an d 1 t very ana ogous . d the head hemispherical an amos chopi; but the body lS depresse ' 1 t . the males. The palpi are entirely occupied by the eyes, at eas m (1) Idem. ~~~ . (3) Idem. Lonclwptera arranged by lul. .e 'tg en With ( 4) Meig., and Ma.cquart. The genusd fi them , See the tribe of the Mt~~· the preceding genera, is greatly remove rom . • .:J~~ • • f CIPBAX.OPIIDII· Ctu.c(;S~J.) We form them m• to a sma U t r1' be under the denommation o DIPTERA. 261 turned up or withdrawn, cylindrical or clavate, and resembles those of the Notocanthi. The legs are short and spineless, and the pos­terior tarsi frequently broad and flattened. These Diptera are very small. M. Macquart has furnished us with various interesting observations on the habits of several species. Some have a seta on the last joint of the antennre. Those, in which that seta is terminal, whose eyes are contiguous in the males, and the three first joints of whose posterior tarsi, or the first at least, are wide and flattened, form the subgenera CALLOMYIA, Meig. Where the first joint alone of the posterior tarsi is dilated, but is as long as all the others taken together. PLATYPEzA, Meig. Where the four first joints of the posterior tarsi are dilated. Those, in which the seta is inserted on the back of that joint, near its junction with the preceding one, whose tarsi are not dilated, and whose eyes are separated in both sexes, compose the genus PxPuNouLus, Lat.-Oephalopa, Fallen. Where the head is almost globular. The others have no seta on the last joint of the antennz. It is narrower and longer than in the preceding Insects. SoENOPINus, Lat. Meig.-Musca, Lin. To which belongs the following species. 8. feneatralia; Musca feneatralia, L.; Schell., Dipt. XIII, 1, the female; 2, the male. Head and thorax obscure bronze; ab­domen black, t('ansversely striate, streaked with white in the male; legs fulvous; tarsi obscure. Very common on the glass in windows(!). (1) For all these subgenera, see the authors already quoted.