Debilos pekujum Scherrer & Aguiar 2012, sp. nov.
Creators: name: Scherrer, Marcus V.
name: Aguiar, Alexandre P.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Debilos
Debilos pekujum

description: Debilos pekujum Scherrer, sp. nov.   
(Figs 81, 103, 149)  
 Description. Female. Fore wing 4.1 mm. Head (Fig. 81): Antenna with 25–26 flagellomeres. Clypeus smooth, sparsely punctate towards apex, moderately convex, regularly curved, CWH 1.79; MWC 0.71, MLW 1.80, MWW 0.40; malar space moderately long, MSM 1.00; supra-antennal area with very thin, inconspicuous, median, longitudinal line; minimum distance from eye margin to occipital carina laterally approximately same width of mandible base.   
 Mesosoma (Fig. 103). Pronotum lateral portion inconspicuously strigate to rugose, epomia faint; notaulus faintly impressed, uniformly sculptured with mesoscutum, not reaching middle of mesoscutum; mesopleuron dorsal half medially faintly strigulate-rugulose, ventral half without distinct ridges or rugae, epicnemial carina restricted to ventral 0.8 of mesopleuron, posteriorly inconspicuously, sparsely corrugated; mesopleural groove faintly, sparsely corrugated; sternaulus anterior 0.6 faintly corrugated; postpectal carina medially straight; metapleuron, subapical fovea shallow, subcircular; pleural carina stout; propodeum anterior area short, PLL 0.60, anterior transverse carina distinct, complete, medially distinctly arched forwards, posterior area strigulate-rugulose, with faint ridges medially moderately arched backwards, spiracle distinctly elliptic, SWL 2.00, propodeal apophyses long, thorn-shaped, AHD 2.69. Legs: Hind t4 posterior lobe about 0.44 × 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 0.1– 0.2 × 1cu-a length, angle with vein M+Cu about 90 degrees; vein 2Cua moderately shorter than crossvein 2cu-a, FWC 0.67; areolet small, APH 0.81; vein 2Ma distinctly longer than vein 2Mb; vein 2Mb tubular; crossvein 2m-cu with bulla short, about 0.2 × as long as vein length or shorter; vein 2Rsb slightly sinuous. Hind wing vein 2-1A long, reaching about 0.7 × the distance to wing margin, HWC 2.40.   
 Metasoma (Fig. 103). T1 petiole basal half smooth towards base, apical half, postpetiole imbricate, except pospetiole apical parts smooth, spiracle at about basal 0.7, inconspicuously prominent, T1LW 3.00, T1WW 2.36, T1GL 0.30; T2 moderately short, apically robust, T2T1L 0.71, thyridium subcircular, T2LW 0.88, T2WW 2.00. Ovipositor approximately straight, OST 0.49, dorsal valve with nodus absent, notch absent; ventral valve tip without distinct serrations.   
 Color. Head black, mesosoma and legs orangish brown (159, 079, 047), metasoma mostly dark brown (073, 054, 042). Head: Scape ventrally lightest; pedicel and flagellomeres 1, 4–9 dorsally white; clypeus and supraantennal longitudinal line dark brown (Fig. 81); mouth parts whitish (218, 216, 195), except mandible apex blackish. Mesosoma: Ventrally often darkest; propodeal apophyses white; propleuron darker than pronotum. Legs: Coxae apical margin, fore and mid trochanters, hind trochanter ventral longitudinal line and tibia basal 0.2 white, except fore and mid trochanters dorsally almost entirely brown; hind coxa apically with dark marks; hind trochanter apical margin dorsally whitish; trochantellus ventrally and femora basal 0.1 lightest; fore femur ventrally, fore and mid tibiae anteriorly and posteriorly, rather mid tibia dorsal elliptical mark at apex, and hind t2 and t3 pale yellow (241, 224, 144) to whitish; hind femur, tibia and tarsus darker. Fore wing with one faint, dark spot, on apical half of cell 3M and 1+2R1, and surrounding areas. Metasoma: T1 orangish brown; T1 apical 0.2 and T2 apical 0.3 with white stripe, T2 stripe central 0.6–0.7 anteriorly concave, concavity apex reaching almost T2 apical margin; T3–7 darkest towards base; T3–6 apical margin lightest; T7 apical margin and T8 dorsally, and sternites medially white; ovipositor sheath dorsally dark brown, ventrally whitish; ovipositor light brown (187, 144, 084).   
 Male. Unknown.   
 Variability. Color: Flagellomere 1 sometimes only centrally white; thorax sometimes present a light orange, ferruginous or fulvous color; mesosoma color orangish brown (188, 093, 032) to brownish; T1 basal 0.6–0.8 sometimes changing to dark brown towards base; extension and brightness of lightest marks on legs and metasoma variable.   
 Comments. Included in the D. typurum species group (see item Species Delimitation). Both D. pekujum and D. okarum have the coxae brown, which can make them similar at first view. However, D. pekujum can be correctly identified by having the flagellomere 1 white, mesoscutum without centro-posterior dark mark, postpectal carina medially straight and fore wing with one apical dark spot, whereas D. okarum has the flagellomere 1 without white mark, mesoscutum medially with centro-posterior square dark mark, postpectal carina medially distinctly bent, and fore wing with both basal and apical dark spots. On the other hand, if the coloration of the coxae is ignored, D. pekujum can resemble D. typurum because of their generally similar color pattern, but D. pekujum can still be isolated by having the clypeus dark brown (vs. black), T1 dorsally orangish brown, lighter than T2 (vs. dorsally dark brown, as darker as T2), T1 spiracle inconspicuously prominent (vs. not prominent), and T2 with thyridium subcircular (vs. distinctly longer than wide).   
 Etymology. A combination of the Carib words pe, meaning “thigh,” and kuju, meaning “brown color,” in reference to the anterior and mid coxae mostly brownish in this species.   
 Distribution. Brazil. Recorded from two localities of Pará: Floresta Nacional de Caxiuanã, Melgaço (02°04’54”S 51°51’05”W), and Mocambo, Belém (around 01°26’60”S 48°28’60”W); and Amazonas: Reserva Florestal Adolpho Ducke, Manaus (02°57’21”S 59°55’20”W) (Fig. 149).   
 Material Examined. 11 ♀. Holotype ♀ from BRAZIL, Pará, Melgaço, Floresta Nacional de Caxiuanã, Trilha Igarapé Ararua, 15–18.XI.2003, yellow pans, APAguiar & JDias, P05025 (UFES). In good shape, mounted on triangle point. Paratypes: FRENCH GUYANA: 1 ♀ from 33.5 km S Cayenne, 8km NW Hwy N2 on Hwy D5, 30 m, 29.V–9.VI.1997, flight interception trap, JAshe & RBrooks leg (CNCI). BRAZIL: 1 ♀, same data except Amazonas, Manaus, Reserva Florestal Adolpho Ducke, 1–3.X.2005, yellow pans, Pt. 3, APAguiar et al. leg, Debilos sp. ACBRamos det. 2008 (UFES); 1 ♀ from Pará, Pirelli, Marituba, 23.XII.1968, TPimentel, Debilos sp. MCGonçalves det. 2004 (MPEG); 1 ♀, same data except Belém, Mocambo, Malaise trap, 28.XI.1977 (MPEG); 2 ♀, same data except Melgaço, Floresta Nacional de Caixuanã, Trilha Igarapé Ararua, 18–21.IX.2003, APAguiar & JDias (UFES); 1 ♀, same data except Estação Científica Ferreira Pena, 13–16.IX.2003 (UFES); 1 ♀, same data except 13–19.IX.2003, P05008 (UFES); 2 ♀, same data except 19–22.IX.2003 (UFES).
description: Published as part of Scherrer, Marcus V. & Aguiar, Alexandre P., 2012, 3469, pp. 1-76 in Zootaxa 3469 on pages 35-37