Debilos crusilix Scherrer, 2012

Scherrer, Marcus V. & Aguiar, Alexandre P., 2012, 3469, Zootaxa 3469, pp. 1-76 : 13-14

Debilos crusilix Scherrer , sp. nov.

( Figs 82, 100, 130)

Description. Female. Fore wing 5.25 mm. Head ( Fig. 82): Antenna with 22 flagellomeres. Clypeus smooth, sparsely punctate towards apex, slightly convex, regularly curved, CWH 1.60; MWC 0.72, MLW 1.50, MWW 0.33; malar space long, MSM 1.56; 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. 100). Pronotum lateral portion next to collar inconspicuously strigate-rugose, next to mesopleuron inconspicuously corrugated, epomia inconspicuous; notaulus moderately impressed, inconspicuously, minutely corrugated, especially anteriorly, not reaching middle of mesoscutum; mesopleuron almost entirely faintly substrigate-rugose, epicnemial carina restricted to ventral 0.8 of mesopleuron, posteriorly inconspicuously, sparsely corrugated; mesopleural groove markedly, sparsely corrugated; sternaulus anterior half faintly corrugated; postpectal carina medially distinctly bent; metapleuron, subapical fovea shallow, subcircular; pleural carina stout; propodeum anterior area short, PLL 0.71, anterior transverse carina distinct, complete, medially distinctly arched forwards, posterior area rugulose, with ridges not forming distinct pattern, spiracle distinctly elliptic, SWL 2.00, propodeal apophyses long, thorn-shaped, AHD 2.79. Legs: Hind t4 posterior lobe about 0.33 × 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 opposite or slightly apicad vein Rs&1M, angle with vein M+Cu distinctly obtuse; vein 2Cua about same size of crossvein 2cu-a, FWC 1.00; areolet small, APH 0.92; vein 2Ma approximately as long as vein 2Mb; vein 2Mb spectral; crossvein 2m-cu with bulla moderately long, about 0.3 × as long as vein length; vein 2Rsb slightly sinuous, almost straight. Hind wing vein 2- 1A long, reaching about 0.8 × the distance to wing margin, HWC 1.53.

Metasoma ( Fig. 100). T1 smooth, polished, spiracle at about basal 0.7, inconspicuously prominent, T1LW 2.58, T1WW 2.92, T1GL 0.29; T2 moderately short, apically robust, T2T1L 0.63, thyridium subcircular, T2LW 0.81, T2WW 1.83. Ovipositor approximately straight, OST 0.57, dorsal valve with nodus faint, notch present; ventral valve tip with inconspicuous, widely spaced serrations, most distinctly developed at the very tip.

Color. Head black, mesosoma dark orangish brown (153, 098, 063), metasoma and legs mostly dark brown (066, 051, 055). Head: Scape, pedicel, flagellomeres 5–9 entirely white; flagellomere 1 dorsal portion with central faint whitish mark; mouth parts whitish (218, 216, 195), except mandible 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, and hind tibia basal 0.2 white, except dorsal brownish mark taking fore coxa basal margin and mid coxa basal 0.8, fore trochanter dorsal portion faintly and mid trochanter dorsally almost entirely dark brown; hind coxa dark brown, except dorsal longitudinal mark orangish brown and apical margin white; hind trochanter apical margin dorsally whitish; trochantellus ventrally whitish mark and femora basal 0.1 lightest; fore femur ventrally, fore and mid tibiae anteriorly and posteriorly pale yellow (241, 224, 144) to whitish. Fore wing with two large, marked dark spots, taking cell 3M apical half up to cell 3R1 basal portion, and cell 1Cu apical and cell R apico-posterior parts, and respective surrounding areas. Metasoma: Basally blackish, changing to dark brownish (086, 050, 031) 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 T2 apical margin; thyridium yellowish; T3 and 4 apical margin lightest; T5 apical margin, T6 mostly, and T7 and T8 entirely dorsally, and sternites medially white; ovipositor sheath dark brown, except basal 0.75 ventrally whitish; ovipositor light brown (187, 144, 084).

Male. Unknown.

Variability. Specimen from Ecuador with epomia more marked and mid coxa entirely white, lacking the basal dark brown mark. Color: Extension and brightness of lightest marks on legs variable.

Comments. Included in the D. prionilix species group (see item Species Delimitation), formed by D. crusilix and D. prionilix . These species have very similar general body structure, but D. crusilix can be separated from D. prionilix by having the flagellomere 1 dorsally centrally whitish (vs. without white mark), supra-clypeal area and clypeus entirely black (vs. dark brown, except clypeus central spot lightest), mid coxa white, with dorsal brownish mark taking coxa basal 0.8 (vs. entirely white), and hind leg, except white marks, blackish (vs. brown).

Etymology. From the Latin word crus, meaning “leg,” in reference to the hind legs mostly dark-colored in this species.

Distribution. Venezuela, found at the localities of Parque Nacional Henri Pittier (10°24’06”N 67°35’06”W) and Rancho Grande (10°04’14”N 67°32’50”W), Aragua; as well Ecuador, recorded from the locality of Muyuna, Napo (about 0°58’S 77°49’W) ( Fig. 130).

Material Examined. 3 ♀. Holotype ♀ from VENEZUELA, Aragua, Rancho Grande, 1140m, 25– 28.II.1995, flight interception trap, #011, RWBrooks leg. ( CNCI) . Left flagellum glued to triangle point, otherwise in good shape, mounted on triangle point. Paratypes: VENEZUELA: 1 ♀ from Aragua, P.N.H. Pittier Rancho Grande, env. 1100m, 9.IV.1994, V94-s.s, LMasner ( CNCI) . ECUADOR: 1 ♀ from Napo, Muyuna, 500 m, 5 Km W of Tena , 15.VI.1981, MCooper, Debilos sp. BFSantos det. 2009 ( BMNH) .