330 NEW YORK STATE MUSEUM 



associated with C. lazarensis, C. cinereoborealis, 

 Eucorethra under woodi, and Corethra lint- 

 n er i . 



Description. Antennae thickly clothed with brownish gray 

 plumes, that of the male annulate and of the female unicolorous. 

 Basal segment globular, light brown, sparsely clothed with scat- 

 tering white scales. Eyes deeply emarginate. Occiput 'sparsely 

 and the thorax thickly clothed with golden yellow scales, except 



that the latter has a very nar- 

 row, median, dark line and a 

 semicircular, lateral one on the 

 posterior third. Abdomen dark 

 brown, almost black, with 

 broad, basal white bands, 



Fig. 74 Labial plate of C. abserratus slightly pr'olonged laterally. 



Ventral surface uniformly suffused with whitish or creamy 

 white scales. Coxae, base, apexes and inner face of femora, 

 and to a less extent the posterior side of tibiae, creamy 

 yellow; other portions of legs brown, with a sparse clothing of 

 whitish scales. Claws unidentate. Wings, with almost fuscous 

 veins well clothed with dark scales. Petiole of first submarginal 

 cell about one third the length of cell ; that of the second submar- 

 ginal cell about equal, breadth of latter cell one third its length ; 

 posterior cross vein more than its own length from mid cross vein. 

 Length of body about 5 mm ; wing spread, 10 mm. 



Described from a single bred, bisexual individual, the right side 

 being male with the cephalic appendages largely female, while 

 those of the posterior extremity are largely male. The male 

 antenna is normally plumose, while that of the female has elongate 

 segments sparsely clothed with long hairs. The male palp is well 

 developed and tipped with a conspicuous mass of plumes as in 

 normal specimens. The female palp appears to be normal for the 

 other sex, is four segmented, basal one nearly globular, the distal 

 three subequal, the third somewhat capitate at its apex and the 

 fourth strongly constricted near its middle. Proboscis well 



