Urosigalphus tredecimantennae Arias-Penna

Carolina, Diana & B, James, 2012, A taxonomic revision of the Colombian species of Urosigalphus Ashmead (Hymenoptera: Braconidae), Zootaxa 3411, pp. 1-54 : 46-48

Urosigalphus tredecimantennae Arias-Penna , n. sp.

Figs. 21 A–G

Male.— Body length 3.9 mm.

Body color ( Fig. 21 A): mainly black. Flagellomeres dark brown. Scape dark brown, but apically with slender light brown stripe. Pedicel apically light brown, but basally dark brown. Annellus, labrum and mandible light brown. Clypeus basally black, but apically dark brown. Mandibular teeth red-brown. Labial and maxillary palps yellow-brown. All the legs yellow-brown except hind tibia and hind tarsus dark brown. Fore wing ( Fig. 21 G): tegula black with a central, elongate, dark brown spot; stigma dark brown. Membranes of both fore and hind wings light brown, microtrichiae of both wings brown. Carapace middle part red-brown.

Head ( Figs. 21 A, E). — Subquadrate. Antenna with 13 flagellomeres ( Fig. 21 E); first three flagellomeres longer than wide (0.20:0.06; 0.28:0.06; 0.27: 0.06 mm) as well as the last five except the last one (0.15:0.05; 0.17:0.05; 0.17:0.05; 0.18:0.05; 0.20: 0.05 mm); apical flagellomere as long as penultimate segment (0.17: 0.17 mm); scape smaller than first flagellomere (0.18: 0.20 mm), and wider than pedicel and first flagellomere (0.10:0.08: 0.06 mm); pedicel more than half as long as scape (0.10: 0.18 mm). Torulus located above midline of the eye. Frons very short with a long, wide, deep, smooth depression, below medium ocellus; depression crossed by a longitudinal median groove with elevated lateral parts, groove ventrally narrower than dorsally, middle part with tilted carinae, laterally with small punctures. Scrobes very deep, smooth, wide, not surrounded by carinae; scrobes reach the vertex. Lower face flat or nearly so, with small, sparse punctures although these are larger laterally; near clypeus with depressions and folds. Fronto-clypeal suture strongly impressed, rounded, with sculpture. Anterior tentorial pit embedded within a strong depression. Clypeus flat, rounded, with small punctates concentrated laterally; apical part reflexed, narrow, smooth, shiny, with a defined edge; basally with a discontinuous, strong transverse carina. Labrum with sparse, small punctures; interspaces wavy, shiny. Mandible long and slender, medially with transverse strigae; mandible set with two teeth, inferior teeth slightly smaller than superior; teeth short, stout, with blunt apex. Maxillary palps longer than labial palps. Ocelli oval, distant from each other, separated by more than the width of lateral ocellus (0.010:0.008); lateral ocelli not on same plane as stemmaticum: lower than stemmaticum; ocelli surrounded by a strong, high edge, which is absent near scrobes. Stemmaticum with dense, small punctures, not on same plane as vertex: higher than vertex, elevated into projection, highest point with shallow depression. Eyes without preorbital carina ( Fig. 21 B) Vertex with faintly sketched longitudinal median carina, with small punctures of different sizes; interspaces wide, but near occiput smooth and shiny. Occiput slightly concave, smooth and shiny. Occipital carina ( Fig. 21 B) complete. Temple and gena with small punctures.

Mesosoma ( Figs. 21 A–D). — Projection of propleuron blunt. Pronotum ( Fig. 21 C) anteriorly with a narrow area of small punctures throughout the edge, but remainder smooth, shiny; curvature of pronotum with large punctures; dorsally with deep punctures of different sizes; posteriorly scrobiculate. Pronotal lobe ( Fig. 21 C) sloped toward tegula; point of inflection carinated; apex truncate. Mesoscutum ( Fig. 21 B) uneven; lateral mesonotal lobes with very small and sparse punctures, anteriorly sloped, but posteriorly convex; edge of lateral mesonotal lobes strong with foveae of subequal sizes throughout; median mesonotal lobe ( Fig. 21 B) higher than lateral lobes, with wavy surface and depressions of different sizes; median mesonotal lobe with two antero-transverse and wavy carinae that run from one end to the other: one at the top continuous and the other discontinuous located at the second posterior third of median mesonotal lobe; both carinae with highest point in middle part; posteriorly median mesonotal lobe delimited by a wide, shiny area, small punctures below this area; area of convergence of notauli with at least five large, deep foveae without a defined shape. Notauli strongly impressed with large, elongate foveae throughout; notauli near edge of transscutal articulation; without additional row of foveae. Scutellum convex medially higher than mesoscutum ( Fig. 21 C), with large areolae of different sizes; and with a central carina; posteriorly sloped, but on same vertical plane as posterior scutellar depression; scutellar sulcus with four deep, uneven foveae; posterior scutellar depression with two elongate, large foveae that fill the whole smooth area. Middle part of metanotum, below posterior scutellar depression, with a strong projection conspicuous in lateral view ( Fig. 21 C). Propodeum antero-posteriorly short, symmetrical; crossed by high MLC; ATC high, strong, with an invagination behind which later rises, but does not reach the same length as MLC; AMA absent; posterior wall of propodeum flat, with areolae of different sizes. Metapleuron ( Fig. 21 C) with large, irregular areolae. Mesopleuron ( Fig. 21 C) with epicnemial carina, without sternaulus; mesopleuron convex with smooth, shiny central area; dorsally, below the tegula, with a deep transverse groove with areolae of different sizes; ventrally delimited by the lateral carina from mesosternum thus the edge bears large, deep punctures; anteriorly with elongate, narrow, flat area that bears small, dense punctures throughout the edge; posteriorly scrobiculate. Mesosternum ( Fig. 21 D) flat, with small and sparse punctures and with a complete central row of foveae surrounded by carinae, each lateral parts delimited by two carinae with inclined edges; mesosternum near fore coxa with a high transverse lamella on same plane throughout; mesosternum near mid coxa with a semicircular area surrounded by carina.

Wings ( Figs. 21 A, G). — Fore wing ( Fig. 21 G): vein M+CU markedly curved (sinuate); vein 3RSb tubular, distant from stigma (0.48 mm); subbasal cell longer than basal (1.25: 1.15 mm); stigma short, rounded. Fore wing: length 2.85 mm, width 0.98 mm; hind wing: length 2.15 mm, width 0.60 mm.

Metasoma ( Figs. 21 A, F). — Carapace in lateral view elongate, fusiform ( Fig. 21 F); anteriorly with strong substrigulae that cross more than half the length of the carapace; area between the carinae lacunose. Apex of carapace with two short tubercles of equal size; in lateral view, region above tubercles convex with small, smooth, shiny area; tubercles triangular, apex blunt, separated by more than half the width of the base of the tubercle (0.06: 0.08 mm). Carapace length 1.85 mm.

Female.— Unknown.

Biology.— Unknown.

Material examined.— Holotype, male, Colombia: Amazonas PNN [Parque Nacional Natural] Amacayacu, Matamata, 3º41´S 70º15¨W, 150m, Malaise, 11–13.xi.2000, A. Parente leg., M.1124, IAvH-E 34310. Deposited in IAvH-E.

Etymology.— From tredecim (Latin, number) = thirteen and antenna (Latin, noun, feminine) = a sail-yard. The name refers to the 13 flagellomeres of antennae (without scape and pedicel).

Figures

FIGURE 21. Urosigalphus tredecimantennae n. sp. (A) habitus; (B) pronotum, mesoscutum, dorsal view; (C) mesosoma, lateral view; (D) mesosternum; (E) antennae; (F) carapace, lateral view and (G) fore wing.