98 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



A NEW GENUS OF STREBLID^. 



BY CHARLES H. T. TOWNSEND. 



The following form is of exceptional interest as representing a 

 new genus of ancient affinities in the very interesting Pupiparous 

 family Streblidce, as coming from the little-known region of north- 

 western Peru, and as inhabiting a host hitherto known only from 

 the description and figures published in 1877 with record of occur- 

 rence at Tumbez, Peru, on the Gulf of Guayaquil, but rediscovered 

 by the writer at Piura. 



WNYTHESIOSTREBLA gen. 11OV. 



Approaches Trichobius in wing character and Megistopoda in hind legs. 

 Thorax conspicuously broader than long, gently widened posteriorly. Scu- 

 tellum short, subcrescentic, bulged posteriorly, gently concave on anterior 

 border. Abdomen narrowed, segments not distinct. Extra hind crossvein 

 between fifth and sixth vein opposite to end of first vein, only a little distad 

 of small crossvein, latter close to origin of third vein whose base is bent 

 abruptly costad from it, no emargination of distal wing-border; the wings 

 elongated, about two and one-half times as long as broad, fully developed 

 and functional, with the characteristic six longitudinal and three crossveins, 

 the first vein ending but slightly beyond middle of wing, thus contrasted 

 with both Strebla and Trichobius. Front legs very short, middle legs a little 

 longer, the femora, tibiae and tarsi in these about equal as to length in same 

 pair of legs; hind legs nearly three times as long as front ones, the hind meta- 

 tarsi much elongated, the hind coxae enlarged and elongated; last tarsal 

 joint of all feet moderately elongated and widened, the claws not toothed. 

 Eyes present. Antennae normal. Habitat on the very rare and little- 

 known bat, Amorphochilus schnablii Peters, ranging from Piura to Tumbez, 

 in the northern coast region of Peru. 



Type, Synthesiostrebla amorphochili n. sp. 



Synthesiostrebla amorphochili new species. 



Length of body, fully 1 mm.; hind legs, scant 1.5 mm; front legs, 0.4 mm.; 

 middle legs, 0.5 mm.; wings, 1.2. mm. One specimen, probably female, 

 from bat collected at Piura, Peru, February 1, 1911 (Townsend). 



Entire insect pale brownish-yellow, abdomen more deeply colored, claws 

 black. Front edge of mesoscutum with a pair of strong teeth on median line 

 directed anteriorly and fitting into corresponding grooves in back of head. 

 A pair of strong bristles, longer than any others on body, situated near hind 

 margin of mesoscutum on median line in front of scutellum. Body and legs 

 with many stiff short sharply-pointed bristles, a few also on costa. Wings 

 clear, veins yellowish. Shorter bristles over legs, wing costa, and on distal 

 borders of the leaf-like palpi. 



