Debilos curtuvenatum Scherrer, 2012

Scherrer, Marcus V. & Aguiar, Alexandre P., 2012, 3469, Zootaxa 3469, pp. 1-76 : 15-16

Debilos curtuvenatum Scherrer , sp. nov.

( Figs 29, 114, 124, 135)

Description. Female. Fore wing 4.1 mm. Head: Antenna with 24–26 flagellomeres. Clypeus very sparsely punctate, markedly convex, most prominent ventrally, CWH 1.76; MWC 0.65, MLW 1.64, MWW 0.36; malar space long, MSM 1.36; supra-antennal area with faint, median, longitudinal carina; minimum distance from eye margin to occipital carina laterally distinctly longer than mandible base.

Mesosoma ( Fig. 114). Pronotum lateral portion next to collar sub-laterally inconspicuously strigate-rugose, next to mesopleuron inconspicuously corrugated, epomia indistinct; notaulus moderately impressed, uniformly sculptured with mesoscutum, reaching about middle of mesoscutum; mesopleuron without distinct ridges or rugae, epicnemial carina restricted to ventral 0.5 of mesopleuron, posteriorly inconspicuously, sparsely corrugated; mesopleural groove faintly, sparsely corrugated; sternaulus anterior half faintly corrugated; postpectal carina medially straight to slightly arched posteriorly; metapleuron, subapical fovea shallow, subcircular; pleural carina moderately stout, or inconspicuous; propodeum anterior area moderately long, PLL 0.93, anterior transverse carina distinct, complete, medially distinctly arched forwards, posterior area without distinct ridges or rugae, uniformly colliculate with anterior area, spiracle subrounded, SWL 1.14, propodeal apophyses of regular height, thornshaped, AHD 2.70. Legs: Hind t4 posterior lobe about 0.2 × 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 0.4 × 1cu-a length, angle with vein M+Cu distinctly obtuse; vein 2Cua moderately shorter than crossvein 2cu-a, FWC 0.67; areolet moderately large, APH 1.08; vein 2Ma approximately as long as vein 2Mb; vein 2Mb absent; crossvein 2m-cu with bulla short, about 0.2 × as long as vein length or shorter; vein 2Rsb slightly sinuous, almost straight. Hind wing vein 2-1A very short, nearly absent, reaching about 0.2 × the distance to wing margin ( Fig. 29), HWC 1.45.

Metasoma ( Fig. 114). T1 finely coriarious, spiracle at about basal 0.7, prominent, T1LW 2.72, T1WW 2.78, T1GL 0.30; T2 moderately short, apically robust, T2T1L 0.72, thyridium subcircular, T2LW 0.93, T2WW 1.94. Ovipositor approximately straight, OST 0.51, dorsal valve with nodus absent, notch absent; ventral valve tip without distinct serrations.

Color. Head black, mesosoma and legs orangish brown (125, 092, 057), metasoma mostly dark brown (073, 054, 042) and dark yellowish (189, 164, 034). Head: Scape and pedicel yellowish brown (158, 136, 049); flagellomeres 5–10 mostly or entirely white; mouth parts whitish, except mandible base margin and apex blackish. Mesosoma: Ventrally blackish; collar entirely and propodeal apophyses white; propleuron darker than pronotum, except ventro-lateral corner lightest; mesoscutum lobes centrally slightly and propodeum anterior portion darkest. Legs: Fore and mid coxae and trochanters, hind coxa apical margin white, except mark taking mid coxa basal 0.2 anteriorly and mid trochanter dorsally brown; trochantellus ventrally and apical parts dorsally, femora basal 0.1, fore and mid femur ventrally, fore and mid tibiae anteriorly and posteriorly, hind tibia basal 0.2 and ventrally, hind t1 apical half lightest. Fore wing with two distinct dark spots, on apical half of cell 3M and 1+2R1, and cell 1Cu apical parts, and respective surrounding areas. Metasoma: T1 and T2 entirely, and T3 basal half dark brown, except T1 ventrally lightest, T1 apical 0.2 and T2 apical 0.2 with white stripe, T2 stripe central 0.6–0.7 anteriorly concave and medially with yellow tint, and thyridium dark yellowish; T3 apical half, T4–8 basally brown, dark yellowish toward tergites apex; T6 apical margin, T7 and T8 dorsally, and sternites medially white; ovipositor sheath dark brown, except basal 0.7–0.8 ventrally whitish; ovipositor light brown (187, 144, 084).

Male. Fig. 124. Antenna with 25 flagellomeres. General morphology and color similar to female, except for slightly smaller body size (fore wing about 3.68–4.96 mm); generally more pilose; color generally lighter and brighter than females, somewhat yellowish brown; flagellum without white band; mesoscutum and propodeum anterior area distinct darkest; propodeal apophyses absent, only vestigial and uniformly colored with propodeum; fore wing without dark spots; hind coxa uniformly darker than metapleuron; tarsus sometimes entirely, or t2 ant t3 whitish; fourth tarsomeres not bilobed; T1 more slender; T2 without white stripe; T3 apical half pale yellow; T4–8 entirely brownish, without yellow or white marks.

Variability. Color: Mesoscutum median lobe sometimes entirely darkish; females from Domingos Martins and Santa Maria de Jetibá with mesoscutum entirely orangish brown, except by median lobe darkish; propodeum anterior area sometimes entirely orangish brown; mid coxa basal brown mark sometimes restricted to coxa basal 0.1; T1 sometimes entirely lightest than T2; extension and brightness of lightest marks on legs variable; hind t2–4 basal and apical margin sometimes lightest.

Comments. Included in the D. trochanteratum species group (see item Species Delimitation). From all the seven species of the complex, D. curtuvenatum is the only one with the mesosoma orangish brown (vs. yellowish in D. xanthochrosatum , or black in the other ones), the metasoma mostly dark brown, with T3 apical half and T4–8 yellowish (vs. entirely yellowish in D. xanthochrosatum , or also mostly black or dark brown, with T3–8 without any yellowish areas as in D. melachrosatum and the other species, respectively), and the hind wing vein 2-1A very short, reaching about 0.2 × the distance to wing margin (vs. absent in D. xanthochrosatum , or moderately short to long, reaching at least 0.5 × the distance to wing margin).

Males of D. curtuvenatum can be easily separated from males of D. trochanteratum and D. petiolatum by having the mesosoma mostly brown (vs. black), collar entirely white (vs. dorsally white), and hind wing vein 2-1A very short, nearly absent (vs. moderately long).

Etymology. A combination of the Latin words curtus, meaning “short,” and vena, meaning “vein,” in reference to the hind wing vein 2-1A very short, reaching about 0.2 × the distance to wing margin in this species.

Distribution. Brazil. Apparently associated to Atlantic rainforest, recorded from several localities at Bahia close to its middle coast, such as Buerarema, Firmino Alves, Iguaí, Itacaré and Uruçuca (around 14°30’S 39°30’W); various localities from the highlands of central and southern Espírito Santo: São Francisco do Batatal, Alfredo Chaves (20°21’40.4”S 40°41’52.2”W), Reserva Biológica Duas Bocas, Cariacica (20°16’21”S 40°28’40”W), Mata Pico do Eldorado, Domingos Martins (20°22’17”S 40°39’29”W), Parque Estadual do Caparaó, Ibitirama (20°29’S 41°43’W), Fazenda Clarindo Kruger, Santa Maria de Jetibá (20°04’27.9”S 40°44’51.3”W), Estação Biológica Santa Lúcia, Santa Teresa (19°57’55”S 40°32’25”W), and Alto Misterioso, São Roque do Canaã (19°48’0.3”S 40°46’29.8”W); and found moderately far from the coast, at Minas Gerais, on the locality of Parque Estadual do Rio Doce (19°32’22.57”S 42°32’44.61”W) ( Fig. 135).

Material Examined. 59 ♀, 4 ♂♂. Holotype ♀ from BRAZIL, Espírito Santo, Cariacica, Reserva Biológica Duas Bocas, Pau Amarelo , 23–25.X.2005, yellow pans, APAguiar et al. leg. ( UFES) . In good shape, mounted on triangle point. Paratypes: BRAZIL: 1 ♀ from Bahia, Itacaré, Fazenda Muchirão , 14°20’48”S 39°18’38”W, 17.VIII.2002 ; 1 ♀, same data except 12.XII.2003 ( CEPLAC) ; 1 ♀, same data except Uruçuca , 14°35’12”S 39°17’29”W, 24.XI.2002 ( CEPLAC) ; 1 ♀, same data except Uruçuca, Fazenda Bom Jardim , 14°34’94”S 39°17’85”W, 23.XI.2003 ( CEPLAC) ; 1 ♀, same data except Iguaí, Fazenda Futurosa , 14°41’38”S 40°03’15”W, 29.XI.2002 ( CEPLAC) ; 1 ♂, same data except 14.VI.2003 ( CEPLAC) ; 1 ♀, same data except 29.XI.2003 ( CEPLAC) ; 1 ♀, same data except 12.XII.2003 ( CEPLAC) ; 1 ♀, same data except Fazenda Guarani , 14°34’30”S 39°19’62”W, 12.XII.2002 ( CEPLAC) ; 4 ♀, 2 ♂♂, same data except Buerarema, Fazenda Sempre Viva , 14°56’S 39°18’W, 26.VIII.2002, Malaise trap, JCardoso & JMaia leg. ( CEPLAC) ; 1 ♀, 1 ♂, same data except 28.XI.2002 ( CEPLAC) ; 1 ♀, same data except Firmino Alves , Fazenda Santo Antônio, 14°59’51”S 39°55’55”W, 09.IV.2003 ( CEPLAC) ; 1 ♀ from Minas Gerais, Parque Estadual do Rio Doce, Lagoa do Gambá 3, Mata Secundária Baixa , 15–22.XI.2001, Malaise , JCRFontanelle leg ( UFES) ; 1 ♀, from Espírito Santo, São Roque do Canaã, Alto Misterioso , 19°48’0.3”S 40°46’29.8”W, 02–11.XI.2007, CWaichert et al. leg ( UFES) ; 1 ♀, same data except Santa Teresa, Estação Biológica Santa Lúcia, 08–13.V.2006 ( UFES) ; 3 ♀, same data except Santa Maria de Jetibá, Fazenda Clarindo Kruger , 20°04’27.9”S 40°44’51.3”W, 29.XI–06.XII.2002, MTavares, CAzevedo et al. leg. ( UFES) ; 1 ♀, same data except Cariacica, Reserva Biológica Duas Bocas , sede, 20°16’21”S 40°28’40”W, 30.IV– 01.V.2005, APAguiar et al. leg. ( UFES) ; 1 ♀, same data except Pau Amarelo , Malaise trap, 20–28.X.2005 ( UFES) ; 6 ♀, same data except yellow pans, 22–24.X.2005 ( UFES) ; 7 ♀, same data except 23–25.X.2005 ( UFES) ; 3 ♀, same data except 24–26.X.2005 ( UFES) ; 7 ♀, same data except 25–27.X.2005 ( UFES) ; 1 ♀, same data except 26–28.X.2005 ( UFES) ; 2 ♀, same data except 27–29.X.2005 ( UFES) ; 1 ♀, same data except Malaise trap, 20–28.X.2005 ( UFES) ; 2 ♀, same data except 26.X–05.XI.2005 ( UFES) ; 1 ♀, same data except 28.X– 05.XI.2005 ( UFES) ; 2 ♀, same data except Domingos Martins, Mata Pico do Eldorado , 20°22’17”S 40°39’29”W, 26.XI–03.XII.2004, MTavares et al. leg. ( UFES) ; 1 ♀, same data except 03–10.XII.2004 ( UFES) ; 1 ♀, same data except Ibitirama, Parque Estadual do Caparaó, 20°29’S 41°43’W, Posto Santa Marta , 10–14.III.2006, RKawada leg. ( UFES) ; 1 ♀, same data except Alfredo Chaves, Picadão , mata, 20°27’53”S 40°42’35”W, 714 m, 8– 15.X.2007, COAzevedo et al. leg ( UFES) ; 1 ♀, same data except São Francisco do Batatal, Fazenda 3 Palmeiras , 20°21’40.4”S 40°41’52.2”W, yellow pans, 6–7.IX.2008 ( UFES) .