665. 

 STOMOXYS SIBERITA. 



Order Dipteia. Fam. Stomoxidae. 



Type of the Genus, Conops calcitrans Linn. 



Stomoxys Geo/., Fab., Meig., Macq., Curt. — Musca DeG. — Conops 

 Linn. — Siphona Meig. — Hsematobia Macq. 



Antennce inserted at the edge of the forehead, drooping and 

 reaching nearly to the margin of the clypeus, small, 5-jointed, 

 2 basal joints bristly above, 1st somewhat obconic, 2nd smaller 

 and cup- shaped, 3rd large compressed, elUptical, pubescent, the 

 apex rounded, 4th a small obovate joint, inserted on the back of 

 the 3rd near the base, 5th a short stout seta, pubescent above 

 with a single series of long hairs (3). 



Trophi exserted horizontally considerably beyond the head (2, g). 

 Labrum long slender and acute {lb). 

 Tongue as long and very fine (c). 



Mandibles and Maxill(e wanting. Palpi rather short, slightly 

 clavate and pilose (/). 



Lip longer than the labrum, geniculated near the base, horny, 

 attenuated, curved, with a small club at the apex bilobed and 

 pilose {g). 

 Head short, transverse, somewhat trigonate ; face suborbicular (2 *) .- 

 eyes long vertical and slightly reniform, remote in both sexes, most 

 so in the females : ocelli 3 in triangle. Thorax oblong : scutel tri- 

 angular or semiovate. Abdomen short, depressed, with 4 large seg- 

 ments, Wings divaricating, with the mediastinal cell contracted 

 towards the apex, but open (9) .- halteres capitate, concealed under 

 large squamulae. Legs long and spiny : tibise not longer than the 

 thighs, with strong spines at the apex : tarsi rather longer, 5-jointed, 

 basal joint long, Ath the shortest : claws slender, curved acute ; pul- 

 viUi bilobed. 



SiBERiTA Fab. — Curt. Guide, Gen. 12(>6. 1. 



Cinereous, bristles black ; head satiny-white with an ochreous 

 stripe down the crown, and a line of bristles on each side, as 

 well as round the margin of the mouth ; antennae orange ; eyes 

 castaneous : thorax with 2 grey stripes at the base ; and a 

 broken one on each side, apex of scutel obscure ochreous : ab- 

 domen ochreous, with a broad black stripe down the back, with 

 ochreous reflections, dilated toward the extremity of the 3rd 

 segment, the 4th entirely black, and the 2nd with a black spot 

 on each side : wings iridescent, slightly ochreous at the base, 

 nervures brown : legs ferruginous, tarsi and proboscis black, 

 base of the latter ochreous. In the female the abdomen is cine- 

 reous with paler reflections. 



In the Author's and other Cabinets. 



