196 SEVENTEENTH Report STATE ENTOMOLOGIST OF MINNESOTA—1918 
SCELIONIDAE 
As in the preceding family, but labial palp has two or more joints. Antennae 
with twelve, eleven or seven joints. Abdomen generally carinated. 
Parasitic on locusts, tree crickets 
and various bugs and caterpillars. 
( ( Specimens have been bred from 
the corn worm, from the eggs of 
the tussock moth and eggs of Dip- 
tera. 
Scelio luggeri (Riley) Ashm. 
occurs 1n Minnesota, parasitic on 
the eggs of Caloptenus. The genus 
Telenomus also occurs in the state 
and doubtless many forms not evi- 
denced in our collection. 
Fig. 80. Telenomus sp. 
CERAPHRONIDAE 
Trochanters with two joints, or stigma very short and broad; antennae inserted 
below middle of face; abdomen with sides rounded. 
A Hessian fly parasite, Ceraphron des- 
tructor, occurs in this family; also a 
parasite on the cherry aphis. Lygocerus 
niger How. is parasitic on grain plant 
lice; Eumegaspilus erythrothorax Ashm. 
is found in nests of Lasius. Measpilus 
striatipes Ashm. has been bred from a 
2 CERAPHRON—somne 
Pegomyia puparium in our Insectary. Fig. 81. Ceraphron humatatus— 
; U. S. Nat. Mus. Bull. 45. 
DIAPRITIDAE 
Wings present, sometimes absent; front wings never with a more or less dis- 
tinct stigma; hind wings with no basal cell; labial palpi with two joints; antennae 12- 
13- or 14-jointed, inserted on the middle of the face, usually on a frontal prominence ; 
trochanters 2-jointed, or stigma very short and broad. 
Bred from syrphus flies, wheat stem maggot, cabbage maggot 
and other Diptera. 
Entomacis ambigua Brues, is found in nests of Stemamma ful- 
vumpiceum. Loxotropa pegomyae Brues has been bred from the cab- 
bage maggot in Minnesota. Galesus sp. taken by H. L. V. at Itasca 
Park Sept. 1. Diapria (Tropidopria) conica F. is a parasite of Eris- 
talis tenax. For an account of the biology of this species see G. E. 
Sanders Can. Ent. 43 (48-50) 1911. 
