349 



II. Bezzia JOHNSONI Coquillett 



Ceratopogon johnsoni Coquillett, Proc. U. S. Nat. Mus., Vol. 23, 1901, p. 600. 

 Bezzia johnsoni (Coquillett) Malloch, Jour. N. Y. Ent. Soc, Vol. 22, 1914, p. 282. 



Orijjinally described from New Jersey. Male imdescribed. Has 

 not been taken in Illinois. 



12. Bezzia dentata Malloch 



Bessia dentata Malloch, Jour. N. Y. Ent. Soc, Vol. 22, 1914, p. 284. 



This species is very close to the description of johnsoni, but the 

 characters given in the key should serve to separate the two. Coquil- 

 lett states in his description of johnsoni that one claw on each tarsus 

 has a median tooth, whereas in dentata both claws have this tooth. The 

 male has both tarsal claws simple. 



Originally described from Monticello, 111., by the writer. Dates of 

 occurrence, June 21-28. A male was obtained on the bank of Salt 

 Fork at Urbana, 111., July 4, 1914, by the writer. 



13. Bezzia setipES Coquillett 



Ceratopogon setipes Coquillett, Jour. N. Y. Ent. Soc, Vol. 13, 1905, p. 59. 

 Bezzia setipes (Coquillett) Malloch, Jour. N. Y. Ent. Soc. Vol. 22, 1914, p. 282. 



Originally described from Brownsville, Texas. Male undescribed. 

 Has not been taken in Illinois. 



14. Bezzia aebidorsata, n. sp. 



Female. — Black, slightly shining. Antenme brown, the bases of 

 the short flagellar joints yellow. Mesonotum deep black, the disc with 

 conspicuous white pruinescence which is so distributed that the disc 

 has on the anterior half a black divided median vitta, laterally on the 

 posterior half a large V-shaped mark of same color with its narrow 

 extremity on posterior margin, and a curved black spot covering the 

 anterior dorso-lateral depressions ; pleurae and scutellum slightly shin- 

 ing, with slight pruinescence. Dorsal surface of abdomen covered 

 with a dense whitish pile which is so short as to appear like pruines- 

 cence, and so dense that the abdomen appears whitish or yellowish ex- 

 cept on apical segment ; venter fuscous. Legs glossy black, fore fem- 

 ora with an obscure yellow band at apices, fore tibiae with a similar 

 band near bases and another near apices ; tarsi pale yellow, the apices 

 of the joints narrowly blackened. Wings clear. Halteres whitish. 



Eyes separated by about one sixth the width of head ; antenna equal 

 in length to head and thorax together. Mesonotum with the discal 

 hairs short and setulose. Abdomen narrow, slightly widest before 

 middle. Legs strong ; fore femora with 4-5 ventral spines ; hind femora 



