1(58 THB CANADIAN ENTOMOLOGIST. 



NEW SPECIES OF ACORDULECERIN^ (HYMENOPTERA). 



BY ALEX. D. MACGILLIVRAY, ITHACA, N. Y. 



Acordulecera media, n. sp. — $ . Front impressed about the median 

 ocellus, producing a more or less distinct pentagonal area; antennal fovea 

 triangular and distinct ; head black, the antennae fuscous ; the clypeus, 

 the labrum, the mandibles, the thorax, except a spot on each lobe and the 

 apex of the scutellum, the legs, and the abdomen, luteous ; the wings 

 hyaline, the veins, the costa and the stigma luteous; the pronotum entirely 

 white or luteous. Length, 5 mm. 



Habitat. — Algonquin, 111. (Nason). 



Acordulecera miniuia, n. sp. — 9 . BVont with short, fine pubescence, 

 so that the head appears glossy black ; pubescence of the antennae black, 

 antennae black ; head black, with the labrum, the clypeus and the mandi- 

 bles white ; the thorax, except a spot on each lobe of the mesonotum and 

 the scutellum, the legs and the abdomen, luteous ; the antennae with the 

 third segment as long as the fourth and fifth together ; the front not 

 impressed above the median ocellus ; the antennal fovea wanting ; the 

 saw-guides exserted and broadly, roundly truncated at apex. Length, 

 4 mm. 



Habitat — Edge Hill, Pennsylvania (G. M. Green) ; Ithaca, N. Y. 



Acordulecera maxima, n. sp — $ . Front with a long pubescence, 

 which conceals the glossy black colour of the head, and gives it a hoary 

 appearance; antennae black, with white hairs; head black, with the labrum, 

 and mandibles white ; the prothorax luteous ; the mesonotum and 

 scutellum black ; the pleura and pectus piceous, and the legs and 

 abdomen luteous ; the third segment of the antennae about as long as the 

 fourth and fifth together ; the wings hyaline ; the front not impressed 

 about the median ocellus ; the antennal fovea wanting ; the saw-guides 

 retracted. Length, 5 mm. 



Habitat.— Ithaca, N. Y. 



Acordulecera maura. n. sp. — 9 • Body black, with the clypeus, the 

 labrum, the mandibles, the prothorax, the legs, the venter of the abdomen, 

 and the four basal tergal segments at middle and at sides, yellow or 

 luteous ; head hoary with pubescence ; the wings more or less infuscated ; 

 the saw-guides exserted, convex above and below, and broadly rounded 

 at apex. Length, 5 mm. 



Habitat. — North Mt., Penn.; Ames, Iowa (E. D. Ball) ; Ithaca, 

 N. Y. 



May, 1908 



