Macroglenes longiclava, Mitroiu, 2016

Mitroiu, Mircea-Dan, 2016, Pireninae (Hymenoptera: Pteromalidae) of Papua New Guinea: key to genera and description of new taxa, Mémoires du Muséum national d'Histoire naturelle 209, pp. 307-320 : 314-315

Macroglenes longiclava n. sp.

Figures 5-6

TYPE MATERIAL — Female holotype, Papua New Guinea. PNG, Mount Wilhelm 1700m, 30- 31.10.2012, PNG MAL- MW 1700A-06/16-d06, P2173 / 8766 [on rectangular card] ( MNHN).

ETYMOLOGY — The name of the new species refers to the characteristic shape of the clava.

DIAGNOSIS — Female. Pedicel, coxae and hind tibiae mainly dark brown. The last two flagellomeres before clava large, with longitudinal sensilla, the rest anelliform; mesosoma moderately convex; ovipositor sheaths slightly less than half length of hind tibia; pecten about 2/3 length of hind tibia.

DESCRIPTION — FEMALE: Holotype (Figures 5-6). Body length. 1.3 mm. Color. Body mostly blackish brown, without metallic reflections. Eyes and ocelli whitish. Mandibles brown. Antenna with scape brown, getting darker apically on dorsal side; pedicel and flagellum blackish-brown. Legs mostly dark brown; extreme apices of tibiae and tarsi yellow- ish except brown last segment. Wings hyaline, tegulae and venation brown (Figures 5-6). Head in dorsal view deeply concave both anteriorly and posteriorly. Temples virtually absent. Clypeal margin rounded, clypeal area with several long setae. Eyes setose. Antenna with fl1-fl3 anelliform, without longitudinal sensilla and progressively increasing in diameter; fl4 and fl5 large, quadrate, with one row of longitudinal sensilla each (Figure 5). Relative measurements: head length: 23, width: 44, height: 45; POL: 9; OOL: 4.5; eye height: 28, length: 21; IOD: 24; malar space: 12; scape length: 23; pedicel length: 10, width: 5; pedicel plus flagellum: 50; fl1-fl3 combined length: 5; fl4 length: 7, width: 7; fl5 length: 6, width: 6; clava length: 20, width: 6. Mesosoma in lateral view arched dorsally (Figure 5). Mesoscutum and scutellum virtually smooth, with extremely fine alutaceous sculpture, visible only in very strong light. Notauli very deep. Dorsellum and median area of propodeum smooth. Fore wing with marginal fringe longer than stigmal vein; basal cell bare, basal vein with four setae; speculum narrowing towards stigmal vein and reaching the latter; two irregular rows of admarginal setae present below marginal vein on ventral side of the wing (Figures 5-6). Relative measurements: mesosomal length: 59, width: 41, height: 40; mesoscutum length: 25; scutellum length: 23, width: 20; dorsellum length: 6; propodeum length: 9; fore wing length: 135, width: 60; M: 37; S: 7; P: 6; hind tibia length: 43; pecten length: 30. Metasoma elongate, slightly longer than head plus mesosoma (Figure 5). Posterior margin of gt1 shallowly emarginate in the middle (Figure 6). Hypopygium reaching about 2/3 length of metasoma (Figure 5). Relative measurements: metasomal length: 86, width: 32; gt1 length: 25; ovipositor sheaths length: 20.

MALE: Unknown.

REMARK — Similar to M. sulawensis Mitroiu, 2011 ( Indonesia, Sulawesi), from which it differs mainly in having only two large flagellomeres before clava (three in M. sulawensis ), a more elongated and less clavate antenna, a denser fore wing pilosity, and a shorter pecten (about 2/3 length of hind tibia in M. longiclava versus about 4/5 length in M. sulawensis ). It is also similar to M. kuwatus Mitroiu, 2011 ( Indonesia, Mangole), from which it differs mainly in the more elongated body, the different colour of legs and the longer pecten (about 2/3 length of hind tibia in M. longiclava versus about half length in M. kuwatus ).