Debilos gnampthum Scherrer, 2012

Scherrer, Marcus V. & Aguiar, Alexandre P., 2012, 3469, Zootaxa 3469, pp. 1-76 : 21-22

Debilos gnampthum Scherrer , sp. nov.

( Figs 77, 90, 97, 133)

Description. Female. Fore wing 6.56 mm. Head ( Fig. 77): Antenna with 27–28 flagellomeres. Clypeus smooth, sparsely punctate towards apex, moderately convex, regularly curved, CWH 1.52; MWC 0.61, MLW 1.79, MWW 0.42; malar space moderately long, MSM 0.84; supra-antennal area with almost indistinct, median, longitudinal carina; minimum distance from eye margin to occipital carina laterally approximately same width of mandible base.

Mesosoma ( Fig. 97). Pronotum lateral portion inconspicuously strigate to rugose, epomia faint; notaulus faintly impressed, finely corrugated, reaching about middle of mesoscutum; mesopleuron dorsal half medially faintly strigulate-rugulose, ventral half without distinct ridges or rugae, epicnemial carina restricted to ventral 0.6 of mesopleuron, posteriorly inconspicuously, sparsely corrugated; mesopleural groove markedly, sparsely corrugated; sternaulus entirely moderately corrugated; postpectal carina medially distinctly bent; metapleuron, subapical fovea shallow, subcircular; pleural carina stout; propodeum anterior area short, PLL 0.76, anterior transverse carina distinct, complete, medially distinctly arched forwards, posterior area rugulose, with ridges not forming distinct pattern, spiracle distinctly elliptic, SWL 2.20, propodeal apophyses long, thorn-shaped, AHD 2.53. Legs: Hind t4 posterior lobe about 0.4 × as long as anterior lobe. Fore wing vein (Rs+M)b perfectly straight, limit with crossvein 1m-cu distinct, ramellus absent; vein Rs&1M uniformly slightly curved; crossvein 1cu-a posteriorly slightly convex, arising distinctly apicad vein Rs&1M, by about 0.2 × 1cu-a length, angle with vein M+Cu about 90 degrees; vein 2Cua moderately shorter than crossvein 2cu-a, FWC 0.63; areolet small, APH 0.63; vein 2Ma approximately as long as vein 2Mb; vein 2Mb tubular; crossvein 2m-cu with bulla short, about 0.2 × as long as vein length or shorter; vein 2Rsb sinuous. Hind wing vein 2-1A long, reaching about 0.8 × the distance to wing margin, HWC 1.53.

Metasoma ( Fig. 97). T1 petiole basal half smooth towards base, apical half, postpetiole coriarious-punctulate, except pospetiole apical parts centrally smooth, sparsely punctulate, spiracle at about basal 0.6, prominent, T1LW 3.20, T1WW 2.31, T1GL 0.30; T2 moderately short, apically robust, T2T1L 0.75, thyridium subcircular, T2LW 1.01, T2WW 2.05. Ovipositor slightly but uniformly downcurved, OST 0.59, dorsal valve with nodus absent, notch absent; ventral valve tip without distinct serrations.

Color. Head black, mesosoma, legs and metasoma black. Head: Scape apex ventrally lightest; pedicel dorsal mark and flagellomeres 1, 5–9 dorsally white ( Fig. 90); mouth parts whitish (218, 216, 195), except mandible base and apex blackish. Mesosoma: Propodeal apophyses white. Legs: Fore and mid coxae apical half, hind coxa apical margin, fore and mid trochanters, fore trochantellus ventrally, hind trochanter basal margin and hind t1 apical half, t2–3 entirely white, except fore and mid trochanters dorsally mostly blackish; femora basal 0.1 slightly lightest; femora antero-ventral longitudinal line, fore and mid tibiae anteriorly and posteriorly, mid t2, hind trochanter apical margin dorsally, hind tibia basal 0.2 and hind t4 pale yellow (241, 224, 144) to whitish. Wings: Hyaline. Metasoma: T1–5 apical margin distinctly lightest; T6–8 apical margin dorsally white; sternites medially white; ovipositor sheath dark brown (092, 054, 024), except basal 0.75 ventrally whitish; ovipositor brown (159, 113, 062).

Male. Unknown.

Variability. Paratype with propodeal apophyses longer than Holotype, somewhat curved backward. Color: Leg marks pale yellow (241, 224, 144).

Comments. Included in the D. orthum species group (see item Species Delimitation), formed by D. gnampthum and D. orthum . However, D. gnampthum is easily isolated from D. orthum by having the pedicel with a dorsal white mark and flagellomere 1 dorsally white (vs. pedicel and flagellomere 1 entirely black), entirely propodeum anterior area short, PLL 0.76 (vs. moderately long, PLL 1.03), anterior transverse carina medially distinctly arched forwards (vs. slightly, uniformly curved), and fore wing vein 2Ma approximately as long as vein 2Mb (vs. distinctly shorter to longer than vein 2Mb).

Etymology. From the Greek word gnampton, meaning “bent, curved,” in reference to the anterior transverse carina of propodeum medially distinctly arched forwards in this species.

Distribution. Recorded from Brazil, at the locality of Paragominas, Pará (around 02°58’0”S 47°28’60”W); and French Guyana, on Patawa (04°33.562’N 52°12.425’W) ( Fig. 133).

Material Examined. 2 ♀. Holotype ♀ from FRENCH GUYANA, Patawa , Kaw , Mts, 04°33.562’N 52°12.425’W, VII.2007, Malaise, JCerda leg. ( CNCI). In good shape, mounted on triangle point . Paratype: BRAZIL: 1 ♀ from Pará , Paragominas, Faz. Cachoeira do Rio Vermelho, 18–21.I.1991, Malaise trap, JDias, Debilos sp. MCGonçalvez det. 2004 ( MPEG) .