276 The Ohio Journal of Science [Vol. XVIII, No. 7, 



1. A. rufiventris Ashmead. 



Bull. U. S. Mus., V. 45, p. 100, (9 ). 1893. 



Female: Head and thorax black, minutely punctate; abdomen 

 rufous; antennee and legs honey yellow. Antennas short, subclavate. 

 Propodeum coarsely rugose. Length, 2 mm. 



Jacksonville, Florida. Collected. 



2. A. affinis Ashmead. 



Bull. U. S. Mus., V. 45, p. 102, (9 ). 1893. 



Female: Black, face from frons ferruginous; antennee brown; legs 

 except posterior tibia; which are fuscous, honey yellow. Head and 

 thorax minutely punctate, propodeum rugulose. Length, 2.2 mm. 



Canada. Collected. 



3. A. dikraneuri n. sp. Plate I, Fig. 3. 



Black; clypeus ferruginous, mandibles yellow, maxillary palpi 

 long, white, extending beyond the base of the head with four segments 

 visible. Legs fuscous to brown; fore legs may be testaceous, if so 

 coxae are fuscous. Antennae brown entirely. Ocelli in triangle, the 

 anterior located medianly on the vertex and farther from the lateral 

 ones than they are from the hind margin of the head, these nearer to 

 the eyes than to each other. Eyes oval, without hairs. Antennae fili- 

 form, two same length and width as one in male, both wider than 

 three; one somewhat longer than two in female; four-nine equal in 

 length three times longer than wide, ten distinctly longer than nine, 

 tapering at tip. Vertex and mesonotum minutely reticulately sculp- 

 tured. Parapsidal furrows distinct, converging and extending half way 

 the length of the mesonotum in male, shorter and not extending to 

 middle in female. Scutellum finely reticulately sculptured, metathorax 

 smooth and shining, propodeum reticulately rugose without median 

 smooth area. Radius slightly curved and part beyond usual point of 

 angelation obliterated. Abdomen compressed laterally. Head and 

 thorax pubescent, abdomen with numerous hairs on ventral half of 

 side and posteriorly. Length, 1.5 mm. 



Columbus, Ohio. Bred from Dikraneura fieheri, adults. 

 Described from one male and three females. Type deposited in 

 Entomological Museum, Ohio State University. Paratypes in 

 writer's collection. 



4. A. microleucus Perkins. 



Rep. Exp. Sta. Hawaii, Ent. v. 2, Bull. 4, p. 55, (9 ), 1907. 



Male: Black; clypeus and mandibles white, two basal antennal 

 joints dark brown, all coxae and trochanters pale yellowish white or 

 white, front legs testaceous; middle legs darker, and hind legs black. 

 Head and thorax minutely sculptured, propodeum reticulately rugose, 

 small smoother area on posterior face. Antennae filiform. Length, 2 mm. 



Nogales, Arizona. Bred from Erythroneura sp. 



