231 



Amongst the material In the collection here, there are a number 

 of males reared from pupaj found in the Illinois River at the same 

 time and place as those which prcxluced the females above described. 

 Though these specimens differ to a considerable extent from the 

 females, I consider them as undoubtedly belonging to the same species, 

 and describe the sex herewith. 



Male. — Shining reddish-brown. Head glossy reddish -brown; 

 antenucT, palpi, and proboscis brown ; antennal hairs yellowish. 

 Mesonotum glossy brown, sometimes yellowish just in front of the 

 scutellum; scutellum generally yellow, but at times as dark as 

 mesonotum ; pleurae slightly paler than the disc of mesonotum ; 

 postnotum concolorous with pleurae. Abdomen brown, shining. Legs 

 yellow ; apices of hind femora rather broadly browned, apices of 

 tibiae and of the first three tarsal joints slightly browned, last two 

 tarsal joints entirely brown. Wings clear, veins yellow. Halteres 

 yellow, the knob sometimes brownish at apex. 



Antennae thicker than in female, second joint much larger, the 

 basal half of the flagellum with the joints shorter and thicker than 

 in female, the surface hairs very long, length of antenna about equal 

 to that of head and thorax together; structure of head very similar 

 to that of female. Discal hairs on mesonotum short, but considerably 

 longer than in the female, scutellar hairs distinct, but short. 

 Hypopygium large, protrusion equal to the combined length of the 

 last three abdominal segments. Legs slender, rather distinctly haired, 

 especially on the dorsal surfaces of the hind tibiae and tarsi ; last tarsal 

 joint without ventral spines ; tarsal claws subequal, much smaller than 

 in the female, without distinguishable tooth. \"enation as in female. 



Length, 3-3.75 mm. 



Locality, same as for the type. A series of seventeen specimens. 



If taken in general collecting and at a different time and place 

 from the female one might be pardoned for describing the male as 

 a different species; but though the differences between the sexes are 

 very considerable I have found their parallel in Palpomyia, and 

 consider that they really belong together. 



The male of this species has much the same coloration as has the 

 female of caiidelli, but the male of caudelli will presumably be much 

 smaller than that above described and also darker in coloration. 



JOHANNSENlElvLA C.\UDEl.U Coquillctt 

 Ceratopogon caudelli Coquillett, Joiini. X. Y. Ent. Soc, A^ol. 13, 1906, p. 6.S. 



Female. — Black, highly glossy. Head black, antennae, face, palpi, 

 and proboscis black-brown. Legs yellow, with varying extent of 



