No. 22,'] HYMENOPTERA OF CONNECTICUT. ^^S % 



P. sycopharita Walsh. Pristiphora tibialis Norton. Larva 

 feeds on willow, birch, and Vaccinium. Connecticut (E. N.). 

 °P. banksi Marlatt. 

 °P. carolinensis Marlatt. 



P. luteola (Norton). Nematus luteolus Norton. Farmington 

 (E. N.). 



°P. idiota Norton. Pristiphora identidem Norton. Larva 

 feeds on Vaccinium. 



P. bivittata (Norton). Nematus bivittatus Norton. Larva 

 feeds on Spircea. Connecticut (E. N.). 

 °P. dyari Marlatt. 



Lygasonematus Konow. 



L. erichsoni Hartig. Nematus erichsoni Hartig. Nematus 

 notabilis Cresson. Larch Sawfly. Howard, Insect Book, PI. 

 xii, Fig. 1 6. 



Head and thorax finely punctate, entire body shiny ; ridges of 

 ocellar basin and frontal crest rounded and distinct; median fo- 

 vea long, shallow, deepest at apex; antennal segments three and 

 four subequal; saw-guides broad, rounded, truncate at tip; 

 body black, with tip of clypeus, basal two-thirds of tibiae, apices 

 of trochanters, and angles of pronotum, whitish; femora, tips 

 of anterior tibise and their tarsi, and four basal segments of 

 abdomen, orange rufous; male with procidentia strongly 

 keeled, somewhat constricted basally, short, not projecting 

 beyond the seventh dorsal segment, and the hypopygium 

 slightly emarginate at apex. Length 8-11 mm. Larva feeds 

 on European and American larch (Larix). 



New Canaan, North Canaan, Union, and Woodstock, 191 5. 



Pachynematus Konow. 



Key to Species. 



1. Males 15 



Females 2 



2. Saw-guides large, projecting free for at least one-half of 



their length 3 



Saw-guides normal, projecting but slightly, at least never for 

 one-half of their length 4 



3. Body black or dark brown; ocellar basin with distinct but 



not strongly elevated walls; frontal crest not strongly 



