Papuaglenes, 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 : 315-316

Genus PAPUAGLENES n. gen.

Figures 7-10

Type species. Papuaglenes villemantae n. sp.

ETYMOLOGY — The generic name is derived from Papua, with reference to Papua New Guinea and the Greek word glene, meaning eye, which is also part of Macroglenes , one of the most common genera of Pireninae . The name is of masculine gender.

DIAGNOSIS — Female. Body black, mostly without metallic reflections (Figures 7-10). Clypeal margin shallowly emarginated (Figure 9). Pronotal collar with sharp transverse carina (Figure 7). Gastral petiole longer than broad, mostly smooth (Figures 7, 10).

DESCRIPTION — FEMALE: Body black, mostly without metallic reflections. Head and mesosoma mostly with superficial sculpture, mainly bare except several long setae; metasoma mainly smooth (Figures 7-10). Head in frontal view triangular due to long and strongly converging genae and very short in dorsal view (Figure 9). Ocellar triangle slightly raised (Figure 9). Clypeal margin broadly emarginate in the middle (Figure 9). Left mandible with four teeth. Eyes bare, oval, posterior margin very shallowly emarginate (Figure 7). Toruli with lower margins below lower eye margins, head surface slightly raised between them. Scrobes shallow (Figure 9). Malar sulcus distinct. Gena laminate at mouth corner. Temple short round. Vertex abrupt behind posterior ocelli, although not carinate. Antenna with two anelliform flagellomeres

followed by three large ones bearing longitudinal sensillae. Clava 3-segmented, symmetric, rather strongly narrowing

towards apex (Figure 9). Mesosoma mostly flattened dorsally (Figure 7). Pronotum short, abrupt, collar margined anteriorly by sharp transverse carina preceding a row of long setae (Figures 7-8). Notauli deep and complete (Figure 8). Scutellum with frenal line barely impressed and sinuate in the middle, frenal area smoother than rest of scutellum; axillulae large (Figure 10). Dorsellum slightly inclined, shiny, longer than frenal area in the middle and about half as long as propodeum, its hind margin not extending above the base of the latter (Figure 10). Propodeum (Figure 10) long, in the same plan as dorsellum, mostly shiny; median carina complete but shallow anteriorly; adpetiolar strip separated from propodeal median area by transverse carina; spiracles round, near posterior margin of metanotum; spiracular sulcus long and deep, reaching posterior margin of propodeum, where it forms a deep oval fovea between adpetiolar strip and thin supracoxal flange. Prepectus very large, triangular and uniformly sculptured. Mesopleura long, fore and mid coxae wide apart (Figure 7); mesepisternum and lower mesepimeron uniformly sculptured; upper mesepimeron smooth. Metapleura narrow, with parallel margins. Hind coxa long and bare except a single seta distally (Figure 10). Tarsi with five segments. Fore wing hyaline, extensively bare in the proximal third; venation not unusually thick, M long, S and P very short, with S almost perpendicular on M; parastigma narrowing towards M and leaving a small hyaline area between its distal end and proximal end of M (Figures 7-8). Metasoma petiolate, laterally compressed, more strongly so in anterior part (Figures 7-8). Petiole longer than broad, conical in anterior half and with parallel sides in posterior half, smooth except a lateral longitudinal carina on each side, and without any setae (Figure 10). Gt1-gt3 the largest (Figures 7-8).

MALE: Unknown.

REMARK — Papuaglenes presents a unique combination of characters among the subfamily Pireninae (see diagnosis), to which it clearly belongs due to the following characters: body black, almost smooth (Figures 7-10); toruli in lower part of the face (Figure 9); reduced number of large flagellomeres (Figure 9); complete notauli (Figure 8); long marginal and short stigmal and postmarginal veins (Figures 7-8).

Papuaglenes belongs to the group of pirenine genera with long marginal vein and very short stigmal and postmarginal veins. From all these genera it differs as follows: from Keesia Mitroiu mostly in the carinate pronotum, setose wings, shorter dorsellum, differently shaped propodeum, and long petiole; from Macroglenes Westwood mostly in the shallowly emarginate clypeal margin, carinate pronotum, moderately long dorsellum, differently shaped propodeum, and long petiole; from Petipirene Bouček mostly in the shallowly emarginate clypeal margin, carinate pronotum, smoother and longer petiole, and differently shaped flagellum, mesosoma and gastral tergites; from Velepirene Bouček mostly in the smoother body surface, shallowly emarginate clypeal margin, carinate pronotum, differently shaped dorsellum, and long petiole; from Watshamia Bouček mostly in the smoother and darker body surface, shallowly emarginate clypeal margin, carinate pronotum, longer dorsellum, thin parastigma, and long petiole.

The two important characters that both Papuaglenes and Petipirene share, the elongated petiole and the abrupt vertex, may indicate that the two genera are sister groups. Papuaglenes seems also close to Keesia , both sharing a shallowly and broadly emarginated clypeal margin and a larger than usual dorsellum (although considerably smaller and not exceeding anterior part of propodeum in the former genus).