378 INSECTA, 
Oras, Fall.—Scaropnaca, Teruritis, Dicrya, Fab.— 
Tepuritis, Lat., 
Where the abdomen is not terminated in the females by an always 
external prolongation, in the form of a tail or stilet, serving as an 
ovipositor*. 
The body of several species is somewhat more elongated than in 
the following subgenus, and these Diptera, in this respect, are inter- 
mediate between the latter and the preceding ones. 
The palette of the attennz is sometimes long and linear as in the 
O. paludum, Fall.; and sometimes short and wide, as in the O. vs- 
brans—Musca vibrans, Lin.—De Geer, Insect., VI, 1, 19, 20, the 
body of which is black, and the head red, with a white streak on the 
inner margin of each eye; a black spot may be observed at the ex- 
tremity of the wings, and the first exterior nervure of their base 
becomes thcikened where it unites with the edge, presenting the ap- 
pearance of a black stigma. 
To this subgenus M. Fallen refers the Musca cerasi, L., or the one 
whose larva feeds more particularly on the red and white-heart 
cherry ; when about to become a pupa, it leaves the fruit and enters 
the ground where its metamorphosis is completed. The perfect In- 
sect is very black and glossy, with four transverse blackish bands on 
the wings, united by pairs in opposite directions. 
Teranoprs, Meiq., 
Where the abdomen of the females terminates by an always pro- 
jecting, tubular oviduct, resembling a tail; the head seen from above 
appears to be almost triangular, and as long as it is widef. 
Tuepuritis, Lat., Faub., Fall Tryrrera, Meig.—Dacus, Fab., 
Where the abdomen is similarly terminated; but the head, seen 
from above, is rather transversal than longitudinal, and rounded. 
The species in which the palette is more elongated, form the genus 
Dacus of Fabricius. Of this number is the one that usually attacks 
the Olive, which he however places among his Oscini. It is reddish, 
with the top of the thorax, some streaks on the back and scutellum 
excepted, blackish; the sides of the superior part of the abdomen are 
also spotted with blackish. The scutellum is salient. Coquebert has 
figured it in his Illust. Icon. des Insect. XXIV, 16. 
T. cardut; Musca cardut, L.; Reaum., Insect. III, xiv, 12— 
14. Black; head and legs fulvous-brown; a zigzag brown line 
on the wings. The female perforates the stem of the Carduus 
hemorrhoidalis, in order to deposit her eggs there, and a gall- 
like excrescence soon forms, which serves for food and shelter to 
the larve. 
The inhabitants of the Isle of France can scarcely obtain per- 
* According to Meigen the hypostoma is arched or rather carinated in the middle, 
whilst it is plane in Trypeta. But this carina, although smaller, appears to me ta 
exist in several species of the last genus. 
+ See Meigen. 
t Idem. A subgenus approximating to those of the Dolichocera in the pyramidal 
form of the head, and to the Tephrites in their other characters, particularly in the 
abdomen, which is terminated in a truncated tube. 
