Inostemma belonocnemae (Ashmead)

The following description of I. belonocnemae (Ashm.) is as slightly revised version from an OCR program. The species was originally described in Metaclisis. The figures were drawn from a type specimen, loaned by the NMHM courtesy Dr. David Smith and Terry Nuhn.

Metaclisis belonocnemae (Ashm.)

Can. Ent. XIX, p. 125, female. Cresson, Syn. Hym., p. 248

Female. length, 1.5 mm. Black, opaque, closely, finely punctate. Legs and antennae, except the club, pale brownish yellow; club brown-black.

Antennae: 10 jointed, the scape thick, clavate; pedicel longer and thicker than the first funicular joint; first and second funicular joints cylindric, equal or nearly so, the first very slightly the longer; third and fourth very minute, transverse; club 4-jointed, the joints, except the last, transverse, the last conical, longer than the preceding.

Thorax: Parapsidal furrows distinct. Scutellum convex with a carina around the posterior margin. Tegulae dark brown. Wings hyaline, the submarginal vein yellowish.

Abdomen: oval,. as long as the thorax, smooth, shining, except the first segment, which is a little ronghened from some striae.

Habitat—Jacksonville, Fla.

Type in coll. Ashmead.

This species was reared by myself from a Cynipid gall Belonocnema treatae Mayr and it is undoubtedly parasitic on a Cecidomyiid inhabiting the gall.

Reference:

Ashmead, W.H. 1893. Monograph of the North American Proctotrypidae. U.S. Natl. Mus. Bull. 45: 252.






Allotropa americana was described by W.H.Ashmead (see ref. Below) as having 9 - segmented antennae in both sexes. During the summer of 2000, I was able to examine types of this and Metaclisis belonocnemaeAshm., AKA Inostemma belonocnemae (Ashm.) and it appeared to me that they were conspecific. There are actually ten antennomeres in the female of Allotropa americana, but the fourth is tiny. Still, it is visible with a dissecting microscope. The club segments are asymmetrical, extruded on one side of the apex.


Allotropa Foerser

Hym.. Stud., II, p.106 (1856). (Type .A. mecrida Walk.)

Head transverse; ocelli 3, the lateral rather close to the margin of the eye. Antennae inserted just above the clypeus, 9 - jointed in both sexes, the flagellar joints in male dentate, verticillate; scape stout, fusiform, pedicel small, globose, in female clavate, ending in a 4- jointed club. Maxillary palpi 2- jointed; labial palpi 1- jointed.

Thorax ovoid ', the mesonotum with 2 faint furrows; scutellum. short, semicircular; metathorax short, the posterior angles subacute. Front wings pubescent, the submarginal vein short, ending in a knob.

Abdomen long - ovate, convex. narrower than the thorax, the first segment short, broad, the second large, the following very short. Legs moderate, the fernora clavate, tibiae and tarsi slender. This genus is distinguished at once from all the other genera in having 9- jointed antennae in both sexes.

Allotropa americana Ashm.

(PI. XI, Fig. 2, 9.)

Can. Ent.,XIX, p. 125; Cress. Syn. Hym., p. 248. 9.

Length, female, 1.4mm . Black, closely minutely punctulate; head transverse, opaque, the lateral ocelli twice their width from the margin of the eye; mandibles rufous; autennae 9- jointed, ending in a 4jointed club, the joints serrate toward one side; scape rufous; pedicel and flagellum dark brown; first and second funiclar joint about equal, the third triangular or subtriangnIar. Thorax mcroscopically punctate, but shining in the middle, the mesonotum, with two distinct furrows; scutellum finely punctulate, opaque, with an elevated margin behind. Tegulae black.

Wings hyaline, the submarginal vein knobbed. Legs reddish - yellow, the coxae dusky.

Abdomen oblong - oval, shining, the petiole and second segment at the base striated along the sides, minutely punctulate, above smooth and shining, the following segments subopaque, very finely punctulate.

Habitat. - Jacksonville, Fla.

Type in coll. Ashmead.