100 NEW YORK STATE MUSEUM 



Other characters as in the group Ceratopogon. Type 

 species C. bipunctatus Linn. There are numerous Ameri- 

 can species belonging to this genus. 



Ceratopogon sp. 

 (PI.17, figs. 4 to 8) 



The larvae of this species were found under oak bark. They 

 are five or six mm. long, bristly, cylindrical, tapering slightly 

 from the thorax to the caudal end; color whitish. Head dark 

 brown, eye spots and mouth parts blackish; each of the thoracic 

 feet armed with a circlet of about eight simple, blackish claws 

 (fig.7), anal feet each with nine or ten bilobed blackish claws 

 (fig.8). The mandible is as shown in fig. 6. The chaetotaxy of 

 the head and body is shown in figs. 4 and 5. Each segment of 

 the abdomen has upon each side a long, honey yellow curved 

 bristle with slightly enlarged end, two slightly curved black, bar- 

 bellate bristles, two slightly curved long black setae, and upon the 

 dorsum a pair of honey yellow spear-shaped setae^ The thoracic 

 segments are similarly armed, except that the first has two slender 

 yellow setae instead of the spear-shaped pair. 



The pupa is 2.5 to 3 mm. in length, yellowish, head darker (fig. 

 9). The thorax with a triangular shield-like dorsum, with a pair 

 of yellow barbellate blunt filaments anteriorly, laterally and pos- 

 teriorly; and a short pair in front of the reddish imaginal eyes. 

 The respiratory trumpets (fig.90 f^re small, rather inconspicuous, 

 with the apical end enlarged. The mesothorax has two barbellate 

 filaments; the first four abdominal segments each with eight yel- 

 low, pointed, delicately barbellate filaments and two shorter blunt 

 ones. The remaining segments, which are concealed in the cast 

 larval skin, are unarmed; the apical end is provided with a pair 

 of slender, pointed lobes. 



Only one specimen of the imago was reared and is not suflS- 

 ciently well preserved to describe. For further descriptions of 

 larvae and pupae of members of this genus the reader is referred 

 to Mr W. H. Long's paper (1902). 



Subgenus Forcipomyia Megerle in litt 



Meigen Syst. Beschr. 1:59. 1818 



Labldomyia Stephens Call. Brit. Ins. 1829 



The manuscript name Forcipomyia bipunctata 



Linn, was given to the species now known as trichopterus 



Meig., by Megerle and later Stephens grouped the species b i - 



punctata, trichopterus, pictipennis Meig., 



