50 



Annual Report of Mr. Charles V. Riley ; these two insects are the Ring-legged Pimpla, 

 which will be described in this article, and the Delicate Long-sting will follow. 



" The Eing-legged Pimpla is a black fly, varying considerably in size, the female 

 sometimes measuring but |, others fully ^ inch, exclusive of ovipositor, the male some- 

 Fig. 12. what smaller. The genus Pimpla was briefly characterized * 



in my last report, p. 43, where it was shown that this same 

 species attacks the Walnut Case-bearer (Acrobasis jitg- 

 landis, Le B. I annex a lateral outline of a female Pimpla, 

 Fig. 12). The male has a more slender abdomen, which 

 is unarmed. 



" Pimpla annulipes is black, the abdomen rough punc- 

 tured above, with the borders of the joints polished and 

 inclined to Ijrown. The tegulae are white, and the legs are 

 reddish, with the exception of the middle and hind tibiie 

 which are dusky, especially the liind pair, and have a broad 

 white annulus, sometimes indistinct on the middle pair, 

 the posterior tarsi are dusky, especially the tip, the palpi 

 are pale yellow. Cresson says it may be distinguished from 

 the other species of this genus, by the scutellum being black, the tegulse white, and the 

 anterior coxse yellowish red. 



" This fly eats its way through the chrysalis and cocoon of the Codling-moth, with- 

 out having previously made any cocoon of its own. It was quite abundant last summer, 

 as from one lot of one hundred and sixty-two Carpocapsas, I obtained twenty-one para- 

 sites, all of them females but one. It is a widely distributed and common species." 

 The second parasite may be called the 



Delicate Long-sting (^Macrocmtnis delicatus) Cress. 



" It has recently been described by Mr. E. T. Cresson (Trans. Am. Ent. Soc. iv., p. 

 178), and is a somewhat variable species, occurring throughout the eastern, middle, and 

 western States, and in Mexico. I subjoin a description drawn up from my bred-specimens, 



Male. Length 0-25 ; expanse 0-45, inch 

 slender, colour pale, polished, honey yellow ; 

 uniformly and sparsely pubescent ; tinged 

 with brown superiorly, the basal joint of the 

 abdomen and a medio-dorsal line on the other 

 joints being quite black. Head, with the 

 eyes (except at disc), and a spot between 

 ocelli, brown-black ; palpi long and almost 

 white ; antennae one fourth-longer than the 

 whole body, about 48 joints, exclusive of 

 bulbus, curled at tip, the ends of basal joints 

 and the whole of joint? dusky. Thorax, 

 with the sutures well defined, and two small 

 triangular black spots behind front tegulae, 

 the metathorax strongly trilobed ; legs very 

 long, pale honey yellow, with tips of tibiae 

 and tarsi faintly dusky ; wings yellowish, 

 hyaline and iridescent, with the veins luteous 

 and the stigma pale honey yellow. 



" Female, rather larger and with abdomen 

 somewhat paler, otherwise similarly marked. 

 Ovipositor yellow, ^ longer thau body, the 

 sheaths quite pilose, and inclining to fuscous, 

 described from two females and one male. 



" It is a graceful fly with very long an- 

 tennae and legs, and the female with a long 

 ovipositor, (Fig. 13) the hair lines at the side' of the figure show the natural size of the 



