Debilos tasamunum 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 tasamunum

description: Debilos tasamunum Scherrer, sp. nov.   
(Figs 39, 113, 151)  
 Description. Female. Fore wing 6.32 mm. Head: Antenna with 25 flagellomeres. Clypeus smooth, sparsely punctate towards apex, moderately convex, regularly curved, CWH 1.92; MWC 0.63, MLW 1.93, MWW 0.47; malar space moderately long, MSM 1.13; 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. 113). Pronotum lateral portion inconspicuously strigate to rugose, epomia faint; notaulus moderately impressed, distinctly corrugated, 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, densely corrugated; mesopleural groove moderately corrugated; sternaulus anterior 0.3 faintly corrugated; postpectal carina medially straight; metapleuron, subapical fovea shallow, subcircular; pleural carina stout; propodeum anterior area very long, PLL 1.33, anterior transverse carina distinct, complete, slightly, uniformly curved, posterior area moderately strigate-rugose, with ridges medially slightly arched backwards, spiracle distinctly elliptic, SWL 1.80, propodeal apophyses long, thornshaped, AHD 2.50. Legs: Hind t4 posterior lobe about 0.56 × as long as anterior lobe. Wings (Fig. 39): 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 uniformly slightly convex, arising opposite vein Rs&1M, angle with vein M+Cu about 90 degrees; vein 2Cua moderately shorter than crossvein 2cu-a, FWC 0.53; areolet small, APH 0.83; 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 slightly sinuous. Hind wing vein 2-1A long, reaching about 0.7 × the distance to wing margin, HWC 1.59.   
 Metasoma (Fig. 113). T1 petiole basal half smooth towards base, apical half, postpetiole coriarious-punctulate, except pospetiole apical parts centrally smooth, sparsely punctulate, spiracle at about basal 0.6–0.7, inconspicuously prominent, T1LW 2.64, T1WW 3.00, T1GL 0.31; T2 moderately short, apically robust, T2T1L 0.73, thyridium distinctly longer than wide, T2LW 0.87, T2WW 2.11. Ovipositor approximately straight, OST 0.61, dorsal valve with nodus absent, notch absent; ventral valve tip with inconspicuous serrations restricted to very tip.   
 Color. Head black, mesosoma and legs deep brown (133, 096, 046), metasoma mostly dark brown (073, 054, 042) and dark yellowish (189, 164, 034). Head: Scape ventrally, pedicel dorsally and flagellomeres 5–9 mostly or entirely white; supra-clypeal area centrally and clypeus dark brown, clypeus apical parts often laterally lightest; mouth parts whitish (218, 216, 195), except mandible base margin and apex blackish. Mesosoma: Ventrally blackish; collar entirely and propodeal apophyses white; propleuron darker than pronotum, except ventro-lateral corner white; tegula and subalar ridge lightest; propodeum anterior portion centrally darkest. Legs: Fore and mid coxae and trochanters entirely, hind coxa apical 0.2–0.5 entirely and trochanter apical margin dorsally, hind tibia basal 0.2, t1 apical margin, t2 and t3 white, except mid coxa basal margin anteriorly and trochanter dorsally deep brown; trochantellus ventrally and apical parts dorsally, femora basal 0.1, fore and mid femur anteriorly and ventrally, fore and mid tibiae anteriorly and posteriorly, and mid trochanter dorsal subcircular spot lightest; hind trochanter and trochantellus distinctly dark brown. Fore wing with one distinct dark spot, on apical half of cell 3M and 1+2R1, and surrounding areas; basal dark spot often minute, indistinctly or almost so, around vein 1cu-a. Metasoma: T1 and T2 entirely, and T3 basal half dark brown, except T1 ventrally lightest, T1 apical 0.2 and T2 apical 0.3 with white stripe, T2 stripe anteriorly concave and interrupted at about central 0.3, this area and thyridium dark yellowish; T3 apical half, T4–8 basally brown, dark yellowish toward tergites apex; T6–8 apical margin dorsally and sternites medially white; ovipositor sheath dark brown, except basal 0.8 ventrally whitish; ovipositor light brown (187, 144, 084).   
 Male. Unknown.   
 Variability. Color: Metasoma sometimes with yellowish marks very faint; extension and brightness of lightest marks on legs variable; specimens from Cariacica with hind t3 central 0.3–0.4 brown, in others specimens this part is slightly brownish or t3 entirely white.   
 Comments. Included in the D. typurum species group (see item Species Delimitation). Among the species of this group, D. tasamunum can resemble both D. masipum and D. sanimum mostly because they have the metasoma posterior half dark yellowish. However, D. tasamunum can be separated from those species by having the flagellomere 1 without white mark (vs. dorsally white), mesoscutum medially without centro-posterior dark mark (vs. with centro-posterior square dark mark), epicnemial carina restricted to ventral 0.8 of mesopleuron (vs. 0.6 of mesopleuron in D. masipum, and 0.7 of mesopleuron in D. sanimum), and hind t1 apically, t2 and t3 white (vs. tarsus without white marks in D. sanimum, and hind t2 entirely and t3 basal half whitish in D. masipum).   
 Etymology. From the Carib word tásamúne, meaning “having a white neck,” in reference to the collar entirely white in this species.   
 Distribution. Brazil. Apparently associated to Atlantic rainforest, recorded from two localities of Espírito Santo: Estação Biológica Santa Lúcia, Santa Teresa (19°57’55”S 40°32’25”W), and Reserva Biológica Duas Bocas, Cariacica (20°16’21”S 40°28’40”W) (Fig. 151).   
 Material Examined. 6 ♀. Holotype ♀ from BRAZIL, Espírito Santo, Santa Teresa, Estação Biológica Santa Lúcia, 30.VII–04.VIII.2005, yellow pans, MTavares, CAzevedo et al. leg. (UFES). Left trochanter, trochantellus, femur, tibia and tarsus lacking, otherwise in good shape, mounted on triangle point. Paratypes: BRAZIL: 2 ♀ from, Espírito Santo, Santa Teresa, Estação Biológica Santa Lúcia, 30.VII–04.VIII.2005, MTavares, CAzevedo et al. leg. (UFES); 1 ♀, same data except Pitfall trap, 200...? [date missing] (UFES); 2 ♀ same data except Cariacica, Reserva Biológica Duas Bocas, Pau Amarelo, 23–25.X.2005, yellow pans, APAguiar et al. leg. (UFES).
description: Published as part of Scherrer, Marcus V. & Aguiar, Alexandre P., 2012, 3469, pp. 1-76 in Zootaxa 3469 on pages 43-44