^d 



1^- n 57 



629. 

 OCYPTERA BRASSICARIA. 



Order Diptera. Fam. Muscidae. 



Type of the Genus, Musca brassicaria Fab. 

 OcYPTERA Lat., Fab., Meig., Desv., Macq., Curt. — Musca Fab. 



Antennce inserted under an angle towards the top of the face, 

 long and drooping, 6-jointed, basal joint somewhat pear-shaped, 

 2nd twice as long, pear-shaped, curved at the base, truncated 

 at the apex, with spiny bristles on the sides, 3rd very long and 

 large, compressed, subelliptic, a little narrowed at the base, 

 4th a small quadrate joint, inserted towards the base on the 

 back of the 3rd, 5th somewhat obovate, 6th along robust seta, 

 slightly pubescent, slender at the apex (3). 

 Labrum short and lanceolate {\ b). 

 Tongue shorter and slenderer (c). 



Palpi remote from the labrum, forming a minute ovate hairy 

 lobe terminated by a long bristle (/with the Palpus detached 

 and greatly magnified). 



Lip very long, exserted horizontally, subcylindric and horny, 

 bilobed at the apex {g). 

 Head subglobose or rhomboidal ; face concave, the cly pens projecting and 

 bristly (2) .• eyes vertical, ovate and remote in both sexes : ocelli 

 3 in triangle on a tubercle at the base of the crown (2 ''^ front view 

 of face). Thorax oblong: scutel semiorbicular. Abdomen long, 

 cylindric, nearly linear, bristly, thick and rounded at the apex. 

 Wings divaricating , rather short and broad ; 3rd longitudinal ner- 

 vure rounded at the extremity and not reaching the apex of the wing, 

 4th and 5th united by oblique waved nervures towards the posterior 

 margin: squamulae large, orbicular and concealing the halteres. 

 Legs long and rather stout : thighs clothed with long bristles inside : 

 tibiae spiny, especially the 4 hinder : tarsi long and 5-jointed, basal 

 joint very long and ciliated with rather long bristles inside at the base, 

 2nd joint oblong, the remainder shorter subturbinate : claws and 

 pul villi sometimes elongated (8, afore leg). 



Brassicaria Fab. — Curt. Guide, Gen. 1271. 1. 



Black, head silvery- white, with a broad black stripe down the 

 crown : thorax bright hoar}'- grey, with 2 black bands down the 

 back, and 2 abbreviated lines between them : abdomen deep 

 orange, the hairs black as well as a subtrigonate patch at the 

 base, a dot at the extremity of the 2nd joint, the foUovidng 

 segments glossy black, with a pearly reflection at the base : 

 wings pale fuscous, costa deep ochreous, especially towards the 

 base ; scales dead- white. 



, In the Cabinets of Mr. Dale and the Author. 



