ICHNEUMONIDiE . 



195 



is widely distributed, cand in Cuba, according to Cresson, it 

 devours the eggs of Periplaneta Americana. 



The genus Aulacodes of Cresson, "forms a very close con- 

 necting-link between the minute Ichneumons and the Evaniae." 

 A. nigriventris Cresson (Fig. 124, a; b, metathorax ; c, inser- 

 tion of the abdomen) lives in Cuba. 



Foenus is quite a different genus, as the abdomen is very long 

 and slender. Foenus jaculator Linn, is known in Europe to 

 frequent the nests 

 of Crahronidm, 

 ovipositing in the 

 larvae. 



Pelednus is a fa- 

 miliar insect, the im- 

 mensely elongated, 

 linear abdomen of 

 the female easily Fig. 125. 



distinguishing it. The male is extremely rare ; its abdomen 

 is short and clavate. It strikingly resembles Trj^poxylon, 

 though the abdomen is considerably larger. Pelednus poly- 

 cerator Drury (Fig. 125, S and ?) is widely distributed 

 throughout this country. 



The genuine Ichneumonidce have long, straight, multiarticu- 

 late antennae. The first subcostal (cubital) cell of the fore- 

 wings is united with the median 

 cell lying next to it, while the 

 second is very small or wholly 

 wanting. There are two recurrent 

 veins. Mr. Cresson has described 

 the genus Eiplwsoma (Fig. 12G), 

 Fig. 12G. which he states may be known by 



the long, slender, compressed abdomen, and the long posterior 

 legs, with their femora toothed beneath the tips. E. annu- 

 latiim Cresson, a Cuban species, is, according to Poey, "para- 

 sitic upon a larva of Pyralis." (Cresson.) 



In Ophion the antennae are as long as the body, the abdo- 

 men is compressed, and the species are honey-yellow in color. 

 0. macrurum Linn. (Fig. 127J attacks the American Silk- 

 worm, Telea Polyphemus. Anomalon is a larger insect and 

 usually black. A. vesparum is, in Europe, parasitic on Vespa. 



