No. 22.] HYMENOPTERA OF CONNECTICUT. 281 



that it occurs throughout the state. It has been taken in May, 

 July, August, and September. 



°P. albotarsatus Provancher. 



Average length 9 mm. ; similar to geminatus, except as fol- 

 lows : tarsal joints of a whitish hue (whence the name) ; exserted 

 portion of ovipositor not quite as long as the second tarsal joint 

 of the hind legs ; antennas stramineous. 



Opheltes Holmgren. 



The only species of this genus occurring in Connecticut is the 

 following : 



O. glaucopterus (Linnseus). Howard, Insect Book, PI. x, 

 Fig. 27. 



Length 18-20 mm. ; head blackish above, with the remainder 

 thereof, including the antennae, brownish stramineous ; thorax 

 black, except the tegulse, which are stramineous, and the scutel, 

 which is brownish stramineous ; wings yellowish, the hind pair 

 broadly margined with a faint fuscous cloud ; legs brownish, 

 except the coxas, which are mostly blackish ; abdomen reddish, 

 barring the blackish apical third ; ovipositor scarcely as long as 

 the second joint of the hind tarsi ; in some specimens more than 

 the scutel is brownish or brownish stramineous. 



Erigcrgus (Foerster) Brischke. 

 Anomalon Authors, not Panzer. 

 Key to Species. ' 



1. Length less than 25 mm. (see also description at end of this 



genus) 2 



Length 25 mm. ; colored like lateralis or very nearly so ; pro- 

 podeum with a deep, median, longitadinal channel relictus 



2. Length less than 20.5 mm 3 



Length 20.5 mm. (female); reddish, with clear wings; anten- 

 nae piceous, basal joints yellow, fourth and fifth joints 

 blackish; head yellow, eyes reddish; summit and back of 

 head black, a yellow orbital dot on each side of the 

 ocelli; inner edge of mandibles piceous; front and base of 

 mesothorax, apex of propodeum, sternum, apical half of 

 first abdominal segment and second dorsal abdominal 

 segment, black; sheaths of ovipositor yellow,clavate; fore 

 legs, basal half of hind tibiae, and tarsi yellow; hind coxae 



