/D' /I 33 



473. 

 DROSOPHILA CAMERARIA. 



Order Diptera. Fam. Muscidee. 



Type of the Genus, Musca cellaris Linn. 

 Drosophila Fall., Meig., Curt. — Mosillus Lat., Sam. — Musca Linn. 

 Antenna attached to small scapes, inserted in two cavities near 

 the centre of the face, nutant, plumose and 4-jointed, basal 

 joint somewhat cup-shaped, bristly, 2nd large subovate and pu- 

 bescent, 3rd small oblong, inserted on the upper side of the 

 2nd towards the base, 4th a stoutish seta with two rows of long, 

 and one of short bristles (3). 



Tropin received into a cavity at the bottom of the face. 

 Labium short, hollow subelongate-trigonate (1 b). 

 Maxilla: short and slender (e). Palpi as long as the lip, robust, 

 clavate pubescent and bristly (/). Lip short and stout, termi- 

 nated by 2 somewhat fleshy and pilose lobes (\ g and 2 * </). 

 Head hemispherical ; face keeled down the middle at the lower part, and 

 whiskered on each side : eyes large ovate : ocelli 3 on the crown of 

 the head {2 and 2*). Thorax globose : scutellum trigoiiate-ovate 

 with a bristle on each side and 2 at the apex. Abdomen sho7't de- 

 pressed 6-jointed and ovate, pointed at the apex in the females. Wings 

 incumbent, long and ample, iridescent, with a very short marginal 

 cell, and 4 longitudinal nervures, the 2nd and Srd united towards the 

 base, and the 3rd and 4th towards the margin. Legs nearly of 

 equal length and size, clothed rvith short hairs. Tibiae, intermediate 

 with 2 or 3 short bristles at the apex, the posterior a little curved. 

 Tarsi as long as the tibia, 5 -jointed and serrated with short bristles 

 beneath, especially the basal joint, which is the longest, 4th and 5th 

 small. Claws small also. 



Cameraria Hal. MSS.—Curt. Guide, Gen. 1334. 2''. 



Ochreous and pubescent, with a few long black bristles, 2nd 

 joint of antennee fuscous, seta black, head and thorax dark ochre, 

 with a fuscous stripe doA\Ti the back, terminating in a s\mt at 

 the scuteUum, and an obscure ferruginous stripe on each side : 

 abdomen brown, the segments edged with ochre, broadest on 

 * the sides, with an obscure pale line down the back : wings 

 stained pale fuscous, the ner\aires piceous : tips of tarsi fuscous. 

 In the Cabinets of Mr. Haliday and the Author. 



As the type of Latreille's genus Mosillus seems to be differ- 

 ent to our group, I have retained Fallen's name. 



For several of my species I am indebted to Mr. Haliday 

 and Mr. Walker, who have detected 10 unrecorded as natives 

 since the Guide was published; those taken at Clifden, near 

 Belfast, are from the former gentleman, as well as the obser- 

 vations on some of them, and those from Southgate are from 

 Mr. Walker. 



1=*. D. nigrita Hal. The size of D. cellaris, shining oclireous 

 fuscous ; liead, thorax and scutellum piceous; eyes 

 castaneous : segments of abdomen with the margins 



