ICHNEUMOXID^. 



I9t) 



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

 devours the eggs of Periplaneta Americana. 



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

 necting-liuk between the minute Ichneumons and the Evanioo." 

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

 tion of the abdomen) lives in Cuba. 



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

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

 frequent the nests 

 of Crabronidce, 

 ovipositing in the 

 larvae. 



Pelecinus is a fa- 

 miliar insect, the im- 

 mensely elongated, 

 linear abdomen of 

 the female easily Fig. 125. 



distinguishing it. The male is extremelj' rare ; its abdomen 

 is short and clavate. It strikingly resembles Trypoxyloiu 

 though the abdomen is considerably larger. Pelecinus polv- 

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

 throughout this country. 



The genuine Ichneumonidce have long, straight, multiarticu- 

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

 wings is united with the median 

 cell lying next to it, while tho 

 second is very small or Avholly 

 wanting. There are two recurrent 

 veins. Mr. Cresson has described 

 /^ the genus Eiplwsoma (Fig. 12G), 



Fig. 126. 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- 

 latum Cresson, a Cuban species, is, according to Poej", "para- 

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



In Ophion the antennae are as long as the bod}-, the abdo- 

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

 0. macrurxtm Linn. (Fig. 127) attacks the American Silk- 

 worm, Telea Polyphemus. Anomalon is a larger insect and 

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



