Thylacogaster garcinivora, sp. n.

(Figs. 14, 28, 38)

Diagnosis. Thylacogaster garcinivora is superficially similar to other species in the genus. The male genitalia are similar to those of T. rhodomenia and T. monospora with an elongate-rectangular tegumen, socii in the form of an expanded patch of fine setae from a membranous region subdorsally on the tegumen, simple valvae with a conspicuous distal spine, and a mesally expanded phallus. Thylacogaster rhodomenia has a rounded-triangular, densely bristled fold of the valva near mid-costa and a blunt spine along the venter of the valva ca. 0.6 the distance from the base to the apex that are absent in T. garcinivora; and T. monospora has a dorsally-projecting spine subapically from the costa of the valva that is absent in T. garcinivora .

Description. Male. Head: Vertex and frons dark brown mixed with dark gray; labial palpus upcurved, mostly grayish white with white ventral scales, length ca. 1.3 times horizontal diameter of compound eye. Thorax: Notum dark grayish brown; venter mostly pale beige; tegula long, scales grayish brown with yellow tips; hindtibia with conspicuous, expanded patch of grayish white secondary scales. Forewing length 7.0– 7.8 mm (mean = 7.5; n = 5); costal fold absent; forewing oblong-subovate, costa gently curved throughout; apex broadly rounded, confluent with costal 0.5 of termen, basal 0.5 of termen convexly rounded, forming a distinct notch near mid-termen at junction of rounded halves; ground color dark gray brown, with many scales tipped with yellow, especially in tornal region; three faint, slender, oblique, iridescent leaden gray lines from costa toward termen, each bordered by one or two rows of yellow-orange scales; speculum mostly yellow orange with a single black spot; fringe bronze brown, somewhat iridescent in costal 0.5. Hindwing uniform brown; fringe much lighter. Abdomen: Genitalia (Fig. 28) with tegumen broadly rectangular; socius represented by moderately dense patch of hairs subdorsally from tegumen; valva large, oblong, costa and venter slightly undulate, falcate distally with a conspicuous stout spine at apex; cucullus occupying distal 0.3 of valva, with long setae directed inward toward tegumen; phallus long, ca. 0.5 length of valva, bulbous in middle, slender, strongly curved in distal 0.6, broader, less curved in basal 0.2; cornuti not apparent in vesica.

Female. Head and thorax: Essentially as described for male; forewing length 7.0–8.0 mm (mean = 7.5; n = 10), frenulum usually with three bristles, rarely with two or four. Abdomen: Genitalia (Fig. 38) with ovipositor somewhat telescopic; papillae anales slender; apophyses slender, slightly dilated at anterior tips, posteriores ca. 1.2 as long as anteriores; ostium bursae within simple, shallow cup; lamella postvaginalis faintly punctate with a small group of short bristles on each posterolateral corner distad of ostium bursae; colliculum absent; ductus bursae very narrow, ductus seminalis originating approximately mid-length of ductus bursae; corpus bursae round, faintly and evenly dimpled; two horn-shaped signa, each from a rounded basal plate.

Holotype (3): Kenya, Eastern Province, Kirimiri Forest, 1710 m, 0°25.62’S, 37°32.83’E, 21 Jan 2003, A&M Coll. #2378, r.f. Garcinia volkensii [ Clusiaceae].

Paratypes (123, 32Ƥ). Same data as holotype (113, 23Ƥ). Same data as holotype, except 8 Nov 2001 (13, 9Ƥ), A&M Coll. #1513; GS USNM 124,478 (Ƥ), 124,477 (3), 124,412 (3), 124,413 (Ƥ), 126, 286 (3), 126,287 (Ƥ).

Etymology. The specific epithet refers to the genus of the new species’ host plant – Garcinia .