514 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



at base, as is also the base of the tarsi, posterior femora Avith a 

 tooth beneath near apex; abdomen smooth, polished, green to 

 brilliant blue or purple in certain lights, ovipositor rather longer 

 than the abdomen. 



Bred from the nest of Ceratina dupla. 



Oligosthenus Foerster. 



°0. stigma Fabricius. 



Female: length 4.5 mm.; mostly black, only slightly shining 

 metallic, punctate and rugulose; mandibles, tibiae and tarsi more 

 or less yellowish; wings mostly hyaline, with a rounded cloud 

 near the stigmal vein and in addition a weaker cloud in the middle 

 of the wing, which latter is connected with the former by a weak 

 shadow-like infuscation; abdomen compressed from side to side, 

 ovipositor much longer than the abdomen, and yellowish. Male: 

 much like the female. 



Bred from the cosmopolitan rose gall-fly {Rhodites rosoe). 



Monodontomerus Westwood. 

 M. aereus Walker. 



Female: length 2.5-3.3 nini. ; dark green, often with more or 

 less coppery color ; tibiae reddish-brown, tarsi yellow ; the row 

 of pits at the margin of the scutellum complete, and as distinct 

 medially as laterally; ovipositor about two-thirds as long as the 

 abdomen; propodeum medially carinate, and basally on each side 

 of the carina a quadrangular depression; back of these usually 

 another smaller depression. Male: essentially as in the female. 



A parasite of the brown-tail moth, introduced into Massachu- 

 setts from Europe in 1906, and now widely distributed. Re- 

 covered at Putnam, 191*, and at Hartford and Suffield, 1915. 

 t 



Syntomaspis Foerster.* 



S. lazulella Ashmead. 



Female: length 2.6 mm.; mostly blue, with close punctures; 

 antennae black, face with slight metallic tingeings ; pleurae also 

 with slight metallic tingeings, collar and mesonotum transversely 

 scratched in addition to being punctate; anterior tibiae and all 

 tarsi, except apical joints, pale yellowish white, tibiae usually 

 with a blue st reak above, mid and posterior tibiae, except narrowly 



See Callimome for species sometimes referred to this genus. 



