438 



Tachinidae. 



Male. Frons above aboiit double as broad as the eye, rather 

 protruding; cheeks somewhat broad, and jowls half as broad as the 

 eye is high. Orbits dark grey, cheeks somewhat reddish, with a whitish 

 or dirty white pruinosity; jowls likewise reddish, grey pruinose; 



frontal stripe somewhat broad, velvet reddish 

 or brownish red. No orbitals. Frontal bristles 

 descending to insertion of arista; outside to 

 the frontals a row of more or less bristly 

 hairs. Vibrissæ ascending to middle or a little 

 higher, short and fme. Orbits besides the 

 bristles with some fine hairs; jowls with only 

 few black hairs. Occipiit grey, with whitish 

 hairs, Antennæ black; third joint a little 

 broad; arista about as long as third joint, 

 thickened to end and short-pointed, second 

 joint a little longer than third or of same 

 length; third joint a little fiatten ed. Palpi pale 

 yellow, a little darkened at tip. Thorax black, 

 greyish pruinose, with four black stripes, the median abbreviated 

 just behind the suture, the lateral somewhat indistinct; humeral 

 cailus as a rule more or less red; scutellum black. Thorax with short, 

 black hairs; three postsutural dorsocentrals, or a small second present 



Fig. 91. G. angustata, ^ , 

 antenna. 



Fig. 92. Wing of G. angustata. 



and then four. Scutellum with three marginal bristles on each side, 

 the apical somewhat small, crossing. Abdomen black, shining and 

 polished, second and third segment with a bluish grey band on front 

 half, more or less interrupted in the middle so that a black middle 

 stripe may appear; abdomen has short, black hairs and a pair of 

 marginal bristles on third and a row on fourtli segment. Genitalia 

 often reddish ; upper forceps forming a thin straight style in its apical 

 part; arms of lower forceps broader, more lamelliform, as long as 

 upper forceps. Legs black, tibiæ may be a little obscurely brownish; 



