ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 



297 



Specimens (83 cf, 1109): From California (Alameda, Auburn, 

 Benicia, Berkeley, Brisbane, Carmel, Fairfax, Los Gatos, Mill Valley, 

 Moraga Valley, Mount Tamalpais, Mountain View, Muir Woods, 

 Napa Co., Oakland, Orange Co., Pacific Grove, Palo Alto, Petaluma, 

 Point Richmond, San Francisco, San Gabriel Mts. at 2,500 ft., San 

 Jose, Santa Barbara, Stanford University at Palo Alto, and Wildcat 

 Creek in Contra Costa Co.). 



The seasonal records of adults (both collecting and rearing) in- 

 dicate that the species is on the wing every month of the year, with 

 peaks of abundance in the spring and fall. 



Rearing records comprise 11 lots of specimens from Phryganidia 

 californica but none from other hosts. 



This species is restricted to western California, from Marin Co. 

 southwards. It is an important parasite of Phryganidia californica. 

 Adults can be collected throughout the year. 



Figures 131, 132. — Localities: 131 (left), Itoplectis behrensii; 132 (right), /. vesca. 



6. Itoplectis vesca, new species 



Figure 326,b 



Front wing 2.5 to 5.3 mm. long; front tarsal claws of female either 

 simple or with a very small median tooth; notaulus present but weak; 

 punctures of mesopleurum and mesoscutum slightly stronger than in 

 /. quadricingulata. Otherwise structurally similar to /. quadri- 

 cingulata. 



Black. Palpi of male white; maxillary palpus of female mostly 

 whitish; labial palpus of female brown; tegula and extreme hind 

 corner of pronotum white; all coxae entirely black; first trochanters 

 black or fuscous, that of front leg whitish in front; second trochanters 

 fuscous to fulvous; front femur and tibia pale stramineous, the femur 

 brown above and below and the tibia brown behind; front tarsus 



526527—60 20 



