Page:New species and synonymy of American Cynipidæ.pdf/10

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302
Bulletin American Museum of Natural History
[Vol. XLII

name to a species based on material of his own collecting. We shall profit considerably from the work he did and regret it was so prematurely stopped by his death in 1907.

Andricus concolorans, new species
Plate XXII, Figures 12 and 13

Cynips cicatricula [gall] Bassett, 1881, Can. Ent., XIII, pp. 101, 113. Packard, 1881, U. S. Ent. Comm. Bull., VII, p. 57; 1890, 5th Report U. S. Ent. Comm., pp. 107, 109. Ashmead, 1887, Trans. Amer. Ent. Soc., XIV, p. 129.

Andricus cicatricula [gall] Bassett, 1890, Trans. Amer. Ent. Soc., XVII, p. 80. Dalla Torre, 1893, Cat. Hymen., II, p. 82. Mayr, 1902, Verh. Ges. Wien, LII, p. 289. Dalla Torre and Kieffer, 1902, Gen. Ins., Hymen., Cynip., p. 62; 1910, Das Tierreich, XXIV, p. 542. Viereck, 1916, Hymen. Conn., p. 413.

Callirhytis cicatricula [gall] Beutenmüller, 1904, Bull. Amer. Mus. Nat. Hist., XX, p. 25.

Andricus cicatriculus [gall] Thompson, 1915, Cat. Amer. Ins. Galls, pp. 12, 31, P1. IIT, fig. 171. FELT, 1918, Bull. N. Y. State Mus., CC, p. 79, Pl. I, fig. 1.

[Andricus cicatriculus (Bassett), male and female, belongs to Ceroptres Hartig, and is an inquiline in the gall of Cynips concolorans.]

Female.—Mostly reddish piceous, the wing-veins very light amber, and antennæ and legs mostly rich golden brown. Head: piceous, the vertex almost black, coriaceous to finely rugose, the cheeks and face with a sparse, white pubescence; antennæ 14-jointed, uniformly rich golden brown, the third joint not much longer than the fourth. Thorax: piceous to black; pronotum striate, mesonotum finely and regularly shagreened, not heavily pubescent; parapsidal grooves continuous, fairly deep, well separated at the scutellum, sharply curving apart at the pronotum; median groove extending about one-third the way to the pronotum; anterior parallel lines smooth, shining, extending half-way to the scutellum; mesopleuræ striate, with a large shining area; scutellum black, finely rugose, sparsely pubescent, with the fovese separated, not large, divergent, shining. Abdomen: reddish piceous, darker dorsally and posteriorly, second segment polished, extending almost to the tip of the abdomen; ovipositor sheaths extending above the tip of the dorsal line. Legs: golden brown, all the coxae and the hind femora and tibiae darker; claws simple. Wings: large; veins light amber; the cubitus very faint but extending well toward the basal vein; first abscissa of the radius angulate though not sharply so; the areolet moderately large; the radial area open. Length: 1.3–2.2 mm.

Male.—Similar to the female, but with the antennae 15-jointed, the third joint curved; abdomen dark, slender, elongate; areolet small; length, 1.2–2.0 mm.

Gall.—Figs. 12 and 13. “Polythalamous galls on the midvein of the leaves of Quercus alba, [Q. Prinus, Q. prinoides, Thompson Coll.] never more than one on a leaf, and situated sometimes at the base, but usually from one-fourth to one-half way from the base, rarely above the middle. They project one-third below and two-thirds above the surface of the leaf. On the under side of the leaf they are rounded and on the upper cone-shaped. The gall is solid and somewhat fibrous, and in its shorter diameter measures about one-half inch and in the longer from five to seven-eighths of an inch. The larval cells radiate in all directions from the center of the gall and are quite numerous. There is at or near the summit of the cone a small scar or indentation …” Bassett, 1881, p. 101.