Urosigalphus ordoincompositus Arias-Penna, n. sp.

Urosigalphus ordoincompositus Arias-Penna, n. sp.

Figs. 17 A–F

Male.— Body length 2.2 mm.

Body color (Fig. 17 A): mainly black. Flagellomeres, scape and pedicel dark brown. Annellus, mandible light brown. Labrum yellow-brown. Mandibular teeth red-brown. Labial and maxillary palps yellow. Fore and mid legs light brown, but hind legs dark brown except trochanter, trochantellus and base of tibia light brown. Fore wing (Fig. 17 F): tegula black with central brown spot; stigma light brown. Membranes of both fore and hind wings light brown and brown microtrichiae. Body stout with long pubescence.

Head (Figs. 17 A–B). — Subquadrate. Antenna with 12 flagellomeres; first three flagellomeres longer than wide (0.12:0.05; 0.13:0.05; 0.11: 0.05 mm); last five, except the last one, longer than wide (0.09:0.05; 0.09:0.05; 0.09:0.05; 0.09:0.05; 0.09: 0.05 mm); apical flagellomere longer than penultimate segment (0.14: 0.08 mm); scape as long as first flagellomere (0.11: 0.12 mm), and wider than pedicel and first flagellomere (0.08:0.05: 0.05 mm); pedicel half as long as scape (0.06: 0.11 mm). Torulus (Fig. 17 B) located above midline of the eye. Frons with irregular sculpture and with some longitudinal and high carinae not reaching the dorsal part of median ocellus, the two outer carinae semi-arched, but do not reach the vertex. Lower face (Fig. 17 B) strongly convex with small and homogeneous punctures throughout, some carinae arising at half of low face and running across frons. Frontoclypeal suture rounded, strongly impressed, and with sculpture. Anterior tentorial pit embedded within a strong depression. Clypeus slightly flattened with scarce punctures, interspaces wide; apically, shiny and reflexed, without a defined edge, without carina. Labrum with scarce and homogeneous punctures. Mandible (Fig. 17 B) long, slender; basally with transverse strigae; mandible set with two long, slender teeth; superior teeth longer than inferior; teeth with sharp apex. Maxillary palps longer than labial. Scrobes shallow, wide, not surrounded by carina, with rough surface; scrobes not reaching the dorsal part of median ocellus. Ocelli oval; lateral ocelli distant from each other, separated by the width of lateral ocellus (0.06: 0.05 mm); inner side of lateral ocelli carinated. Stemmaticum mound-shaped, with a depression between median and lateral ocelli; stemmaticum not on same plane as vertex, highest point concave and with irregular punctures, rough interspaces. Eyes without preorbital carina (Fig. 17 B). Vertex without carina, with large, dense, irregular and wavy areolae, but near occiput with smooth area. Occiput slightly concave, smooth, shiny. Occipital carina present laterally, absent dorsally. Temple and gena with irregular, wavy areolae, but with smooth areas near eyes.

Mesosoma (Figs. 17 A, C–D). — Protuberance of propleuron blunt. Pronotum (Fig. 17 C) without central, smooth area; anteriorly with large, irregular punctures; posteriorly with small, irregular punctures. Pronotal lobe sloped toward tegula; point of inflection carinated; rounded apex. Mesoscutum uneven, with small, homogeneous punctures, irregular surfaces conspicuous at median mesonotal lobe; lateral mesonotal lobes flat; anteriorly sloped, lateral edges with large, irregular punctures throughout; median mesonotal lobe convex, with two carinae: longitudinal median, antero transverse carina; continuous longitudinal median carina shorter than half of median mesonotal lobe; continuous antero transverse carina that runs from one end to the other; anteriorly both carinae intersected forming a highest point in the middle part; area of convergence of notauli with large, irregular areolae forming an inverted triangle. Notauli strongly impressed, with large, heterogeneous, deep punctures; notauli next to edge of transscutal articulation, with additional disordered row of punctures. Scutellum slightly convex, medially not on same plane as mesoscutum, with large, heterogeneous areolae; interspaces very narrow, smooth and shiny; posteriorly strongly sloped, but on same vertical plane as posterior scutellar depression; scutellar sulcus with four deep and uneven foveae; posterior scutellar depression with two square foveae that fill the whole smooth area. Middle part of metanotum, below posterior scutellar depression, with a strong projection conspicuous in lateral view. Propodeum antero-posteriorly short, symmetrical and crossed by MLC which is posteriorly projected (Fig. 17 C); ATC straight; AMA absent; posterior wall of propodeum flat with small and homogeneous areolae. Metapleuron with large, homogeneous areolae. Mesopleuron (Fig. 17 C) with epicnemial carina, without sternalus; mesopleuron convex; shiny central area with scarce, small, sparse punctures; below tegula, mesopleuron with large, irregular areolae; dorsally with sculpture of different sizes and shapes; ventrally a wide, deep dent with large, carinated, homogeneous areolae throughout; anteriorly with an elongate, narrow, flat area that bears small, dense punctures throughout the edge; posteriorly scrobiculate. Mesosternum (Fig. 17 D) flat, surface rough, with a central row of foveae of different sizes and surrounded by carinae; each lateral part delimited by two longitudinal, inclined carinae forming a rectangle; mesosternum near fore coxa with a high transverse lamella with two elevations, below each coxa; mesosternum near mid coxa with a semicircular, reflexed carina, with irregular sculpture.

Wings (Figs. 17 A, F). — Fore wing (Fig. 17 F): vein M+CU markedly curved (sinuate); vein 3RSb tubular, distant from stigma (0.32 mm); subbasal cell longer than basal (1.06: 0.78 mm); stigma short and relatively rounded. Fore wing: length 1.70 mm, width 0.72 mm; hind wing: length 1.25 mm, width 0.38 mm.

Metasoma (Figs. 17 A, E). — Carapace in lateral view teardrop-shaped (Fig. 17 A); anteriorly with strong substrigulae that cross more than half the length of the carapace; area between carinae lacunose. Apex of carapace with two tubercles and flat area above tubercles (Fig. 17 E), but dorsally with a short, sharp tip (Fig. 17 A). Tubercles black, subequal in length (0.1: 0.09 mm), apex pointed; tubercles separated by more than twice the width of the base of the tubercle (0.11: 0.04 mm). Apical part of carapace with irregular and small punctures. Carapace length 1.08 mm.

Female.— Body length 2.84 mm; apically carapace with conspicuous protuberances; notauli also with additional, but neater row of punctures; longitudinal carinae of lateral parts of mesosternum close to fore coxa higher than in male.

Biology.— Unknown.

Comments. Body length from 2.2 to 3.0 mm. Some specimens have incomplete row of areolae on the mesosternum. Notauli with additional neat row of punctures.

Material examined.— Holotype, male, Colombia: Chocó, PNN [Parque Nacional Natural] Utría, Centro de visitantes, 06º01´N 77º20´W, 2m, Malaise, 2–15.viii.2000, J. Pérez leg., M.818, IAvH-E 64519. Paratypes, Colombia, Amazonas: 1 female, PNN [Parque Nacional Natural] Amacayacu, Matamata, 3º41'S 70º15'W, 150m, Malaise, 11–17.xii. 20000, A. Parente leg., M.1118, IAvH-E 34302. Holotype and paratype are deposited in IAvH-E.

Other material, Magdalena: 1 male, PNN [Parque Nacional Natural] Tayrona, Cañaveral, 11º20'N 74º2'W, 30m, Red, 18–20.vii.2002, M. Sharkey, D. Arias & E. Torres leg., M.4171, IAvH-E 64518. Costa Rica, Punta Arenas: 1 male, Reserva Biológica Carara, Esta. [Estación] Queb. [Quebrada] Bonita, 50m, R. Guzmán, 01–29.vii.1992, INBIO CRI 000 904048

Etymology.— From ordo (Latin, noun, masculine) = a series, line, row and incompositus (Latin, adjective) = disorderly, irregular. The name refers to the different sizes of the foveae that form the central row in the mesosternum.