Debilos okum Scherrer, 2012

Scherrer, Marcus V. & Aguiar, Alexandre P., 2012, 3469, Zootaxa 3469, pp. 1-76 : 30-32

Debilos okum Scherrer , sp. nov.

( Figs 47, 106, 147)

Description. Female. Fore wing 4.5 mm. Head: Antenna with 25 flagellomeres. Clypeus punctate, moderately convex, regularly curved, CWH 1.80; MWC 0.53, MLW 2.13, MWW 0.50; malar space moderately long, MSM 1.25; supra-antennal area with faint, median, longitudinal carina; minimum distance from eye margin to occipital carina laterally approximately same width of mandible base.

Mesosoma ( Fig. 106). Pronotum lateral portion next to collar inconspicuously strigate-rugose, next to mesopleuron inconspicuously corrugated, epomia faint; notaulus moderately impressed, faintly corrugated anteriorly, not reaching middle of mesoscutum; mesopleuron dorsal half medially inconspicuously strigulaterugulose, ventral half without distinct ridges or rugae, epicnemial carina restricted to ventral 0.8 of mesopleuron, posteriorly inconspicuously, sparsely corrugated ( Fig. 47); mesopleural groove faintly, sparsely corrugated; sternaulus anterior half faintly corrugated; postpectal carina medially distinctly bent; metapleuron, subapical fovea shallow, subcircular; pleural carina moderately stout, or inconspicuous; propodeum anterior area very long, PLL 1.18, anterior transverse carina distinct, complete, medially slightly pointed forwards, posterior area faintly strigate-rugose, with faint ridges medially distinctly arched backwards, spiracle distinctly elliptic, SWL 2.00, propodeal apophyses long, thorn-shaped, AHD 1.86. Legs: Hind t4 posterior lobe about 0.5 × as long as anterior lobe. Fore wing vein (Rs+M)b perfectly straight, limit with crossvein 1m-cu distinct, ramellus absent; vein Rs&1M posteriorly slightly curved; crossvein 1cu-a posteriorly slightly convex, arising distinctly apicad vein Rs&1M, by about 0.2–0.3 × 1cu-a length, angle with vein M+Cu about 90 degrees; vein 2Cua moderately shorter than crossvein 2cu-a, FWC 0.60; areolet small, APH 0.72; vein 2Ma distinctly shorter than 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 1.77.

Metasoma ( Fig. 106). T1 petiole basal half smooth towards base, apical half, postpetiole coriarious-punctulate, except pospetiole apical parts centrally smooth, sparsely punctulate, spiracle at about basal 0.7, inconspicuously prominent, T1LW 3.03, T1WW 3.00, T1GL 0.29; T2 moderately short, apically robust, T2T1L 0.74, thyridium distinctly longer than wide, T2LW 0.97, T2WW 2.16. Ovipositor approximately straight, OST 0.58, dorsal valve with nodus absent, notch absent; ventral valve tip with inconspicuous serrations restricted to very tip.

Color. Head black, mesosoma and legs orangish brown (159, 079, 047), metasoma mostly dark brown (73, 054, 042). Head: Scape, pedicel and flagellomeres 5–9 dorsally white; clypeus centrally lightest; mouth parts whitish (218, 216, 195), except mandible base mark and apex blackish. Mesosoma: Collar dorsally and propodeal apophyses white; propleuron darker than pronotum, except ventro-lateral corner lightest. Legs: Fore and mid coxae and trochanters, hind coxa apical margin, tibia basal 0.2, t2 entirely and t3 basal half white, except dorsal brown mark taking fore coxa basal 0.6 and mid coxa basal 0.8, fore trochanter dorsal portion faintly and mid trochanters dorsally almost entirely dark brown; hind coxa apically with distinct dark marks; hind trochanter apical margin dorsally whitish; hind trochantellus, femur, tibia and tarsus darkest; trochantellus ventrally and apical margin, and femora basal 0.1 lightest; fore and mid tibiae anteriorly and posteriorly, rather mid tibia basally, pale yellow (241, 224, 144) to whitish. Fore wing with two marked dark spots, on apical half of cell 3M and 1+2R1, and cell 1Cu apical parts, and respective surrounding areas. Metasoma: Basally blackish, changing to dark brownish (084, 053, 021) towards apex; T1 ventrally lightest; T1 apical 0.2 and T2 apical 0.3 with white stripe, T2 stripe central 0.6–0.7 anteriorly concave, concavity apex reaching about half stripe width; T3–5 apical margin lightest; T6 apical margin, T7 and T8 dorsally, and sternites medially white; ovipositor sheath dark brown, except basal 0.8 ventrally whitish; ovipositor light brown (187, 144, 084).

Male. Unknown.

Variability. Supra-antennal area sometimes with almost indistinct longitudinal line. Specimen form Panama with epomia more marked, postpectal carina medially markedly arched and general color lightest. Color: flagellomere 4 apical parts sometimes white; mesosoma color orangish brown (188, 093, 032) to brownish; extension and brightness of lightest marks on legs and metasoma variable.

Comments. Included in the D. typurum species group (see item Species Delimitation). This species is quite similar to D. owinum mostly because of their similar color pattern coxae and hind tarsus, but both these species differ from all other species of D. typurum group by having the combination of flagellomere 1 without dorsal white mark, mesoscutum medially without centro-posterior square dark mark, propodeum anterior area moderately to very long, PLL>0.8, hind coxa mostly with the same color than metapleuron, even if with apical dark marks, and metasoma posterior half dark brownish, except with marks. On its turn, D. okum can be differentiated from D. owinum by having the epicnemial carina restricted to ventral 0.8 of mesopleuron (vs. 0.6), propodeum anterior area very long, PLL 1.18 (vs. moderately long, PLL 0.87), fore wing with two distinct dark spots (vs. with one faint, apical dark spot), hind coxa with apical dark marks (vs. without apical dark marks), and thyridium distinctly longer than wide (vs. subcircular).

Etymology. From the Carib word oku, meaning “two,” in reference to the fore wing with two dark spots in this species.

Distribution. Recorded to northern South America, at Venezuela, from the localities of Aragua: Parque Nacional Henri Pittier (10°24’06”N 67°35’06”W) and Rancho Grande (10°04’14”N 67°32’50”W); and Guyana, from Region 8: Iwokrama Forest Reserve (04°40’19”N 58°41’04”W). Also founded at Central America, at Panama, around Colón (around 09°16’N 80°02’W) ( Fig. 147).

Material Examined. 9 ♀. Holotype ♀ from VENEZUELA, Aragua, Rancho Grande , 1140m, 25–

28.II.1995, flight interception trap, #011, RWBrooks ( CNCI). In good shape, mounted on triangle point. Paratypes: PANAMA : 1 ♀ form Colón, 14 km N Jet Estobol Rd. and Piña Rd. on Piña Rd. , 2–13.VI.1996, ~ 20 m, JAshe & RBrooks leg ( CNCI) . VENEZUELA: 3 ♀ from Aragua, Rancho Grande, 1140m, 25–28.II.1995, flight interception trap, #011, RWBrooks ( CNCI) ; 1 ♀, same data except 1–6.III.1995 ( CNCI) ; 1 ♀, same data except Aragua, P.N.H. Pittier, Rancho Grande, 1100m, 9.IV.1994, V94-s.s, LMasner ( CNCI) ; 1 ♀, same data except yellow pans, 10–14.IV.1994, V94 ( CNCI) . GUYANA: 1 ♀ from Region 8, Iwokrama Forest Res., 04°40’19”N 58°41’04”W, flight interception trap, V-VI.2001, 100– 200m, RBrooks & ZFalin ( CNCI) .