o • 



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No. 22.] HYMENOPTERA OF CONNECTICUT. II5 



P. sycophanta Walsh. Pristiphora tibialis Norton. Larva 

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



'P. banksi Marlatt. 

 'P. carolinensis Marlatt. 

 P. luteola (Norton). Nemahts hiteolus Norton. Farmington 

 (E. N.). 



°P, idiota Norton. Pristiphora identidem Norton. Larva 

 feeds on Vaccinium. 



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

 feeds on Spircua. 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. 16. 



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 tibiae 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 8-1 1 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 



