Decevania nuda Kawada

Kawada, Ricardo & Azevedo, Celso O., 2007, Taxonomic revision of the Neotropical ensign wasp genus Decevania (Hymenoptera: Evaniidae), Zootaxa 1496, pp. 1-30 : 21-22

Decevania nuda Kawada sp. nov.

(Figs. 46–52)

MALE. Description: Head, antenna, mandible, palpi, mesosoma, metasoma, leg and wing veins dark castaneous; wings hyaline and ocelli translucent.

Head: Inconspicuously punctate (Fig. 46). Mandible with two apical teeth. Eye large, nearly circular, HE 1.55 x WE (Fig. 47). Malar space strigulate (Fig. 46). Face above of clypeus with developed protuberance (Fig. 47). Gena flat in frontal view, wide in lateral view, WG 1.33 x WTO, genal carina complete (Fig. 47). Lateral of vertex angularly convex in frontal view (Fig. 46). Ocellus large, DAO 1.00 x WTO; ocellar triangle not raised in frontal view (Fig. 46). Anterior ocellus not aligned in dorsal view of head. Clypeus pinched (Fig. 47). Occipital area narrow (Fig. 47). Subocullar groove with inconspicuous carina (Fig. 46). Toruli polished around them (Fig. 47). Antenna inserted at above level of midline of eye (Fig. 46). Antennal segments evenly wide; pubescence subappressed, with some setae outstanding; scape short, scape LS 0.59 x HE; flagellomere I long, LF 1.40 x LP (Fig. 52).

Mesosoma: Thorax impunctate dorsally, slightly raised (Fig. 50). Pronotum narrow in lateral view, LPR 0.33 x WTO, with conspicuous fovea in anterior corner. Mosonotum not aligned (Fig. 50). Mesoscutum narrow, anterior depression with short scrobiculate, lateral carina incomplete anteriorly; notaulus with elongated punctures, straight (Fig. 48). Lateral scutellar region umbilicated; posterior region of scutellum convex in profile (Fig. 50). Median region of scutellar groove with small fovea. Metanotum conspicuous medially. Propodeum deeply areolate; median region of dorsal propodeum polished; posterior region flat in profile; small ridge posterolaterad of insertion of petiole large (Fig. 50). Mesepimeron strongly scrobiculate. Mesepisternum wide; anterior region partially areolate; posterior margin evenly areolate; upper region evenly areolate; lower region foveolate and punctate, lower region with few foveae, anterior area of lower region with fovea irregularly sparse; central region concave (Fig. 51). Metapleuron areolate-umbilicate; metepimeron bulging. Distal region of metafemur not dilated. Tarsal claw with two teeth. Basitarsal projection of hind leg long, with blunt apex. Wing LFW 3.15 x LM. Basal cell setose. Stigmal vein wide, WST 0.26 x LST, apex of posterior margin convex (Fig. 49). 1R1 vein absent. Stigmal + 1R1 long (Fig. 49). Stigmal + 1R1 LST 7.67 x WTO. Set of M+CU, 1CUa, 1CUb and 2CU veins sinuous.

Metasoma: Petiole long, polished dorsally, LPE 0.87 x LST.

FEMALE – Description: Color black; dark castaneous; light castaneous; hyaline and translucent.

Head: Inconspicuously punctate. Mandible with two apical teeth. Eye small, nearly circular, HE 1.56 x WE. Malar space strigulate. Face above of clypeus with developed protuberance. Gena flat in frontal view, wide in lateral view, WG 1.25 x WTO, genal carina complete. Ocellus small, DAO 0.75 x WTO; ocellar triangle not raised in frontal view; anterior ocellus aligned in dorsal view of head. Clypeus pinched. Occipital area wide. Subocullar groove with conspicuous carina. Toruli polished around them. Antenna inserted at above level of midline of eye. Antennal segments widened progressively; pubescence subappressed, with some setae outstanding; scape short, scape LS 0.93 x HE; flagellomere I short, LF 0.80 x LP.

Mesosoma: Thorax impunctate dorsally, not raised. Pronotum narrow in lateral view, LPR 0.25 x WTO, with conspicuous fovea in anterior corner. Mosonotum not aligned. Mesoscutum wide, anterior depression with short scrobiculate, lateral carina complete; notaulus with elongated punctures, straight. Lateral scutellar region umbilicated; posterior region of scutellum convex in profile; median region of scutellar groove with small fovea. Metanotum conspicuous medially. Propodeum deeply areolate; median region of dorsal propodeum polished; posterior region flat in profile; small ridge posterolaterad of insertion of petiole small.

Mesepimeron strongly scrobiculate. Mesepisternum wide; anterior region partially areolate; posterior margin evenly areolate; upper region evenly areolate; lower region foveolate and punctate, lower region with few foveae, anterior area of lower region with fovea irregularly sparse; central region concave. Metapleuron areolate-umbilicate; metepimeron bulging. Distal region of metafemur not dilated. Tarsal claw with two teeth. Basitarsal projection of hind leg short, with sharp apex. Wing LFW 3.03 x LM. Basal cell setose. Stigmal vein wide, WST 0.20 x LST, apex of posterior margin convex. 1R1 vein absent. Stigmal + 1R1 long. Stigmal + 1R1 LST 5.00 x WTO. Set of M+CU, 1CUa, 1CUb and 2CU veins very sinuous.

Metasoma: Petiole long, polished dorsally, LPE 0.85 x LST.

Material examined. HOLOTYPE. Male. ECUADOR, Napo: Sierra Azul, 2300 m, 0,67ºS 77,92ºW, 21– 22.iv.1996, PT, P. J. Hibbs col. ( CNCI). ALLOTYPE. Female. ECUADOR, Napo: Sierra Azul, 2300 m, 0,67ºS 77,92ºW, 21–22.iv.1996, PT, P. J. Hibbs col ( CNCI). PARATYPE. COLOMBIA, 1 male and 1 female, Antioquia: 1800 m 7º5’N 76º30’W, 18–22.iv.1973, J. Helava col.; 1 female, Choco: 2050 m, 5°55’N 76°10’W, 13.xi.1972, J. Helava col ( CNCI); 1 female, Hulia: PNN Cueva de Los Guácharos Alto el Mirador, 1980 m, 1º38’N 76º6’W, 06–21.iv.2002, Malaise, J. Fonseca col. M. 3127, IAvH 65791 ( IAVH). ECUADOR, Napo: Sierra Azul, 0,67ºS 77,92ºW, 1 male 2300 m, 12–13.ii.1996, PT; Hacienda Aragon, 2250 m, 8 male and 7 females, 13–19.ii.1996, hand collecting; 2300 m, 2 male, 17.ii–08.iii.1996, Malaise; 4 male and 9 females, 21–22.iv.1996, PT; 15 male and 9 females, 20–21.iv.1996, PT ( CNCI).

Comments. D. nuda sp. nov. differs from the others species by having genal carina complete; lateral of face strigulate and protuberance developed; flagellomere I long; notaulus with elongate punctures; stigmal vein wide, convex in ventral edge and 1R1 vein absent.

Variation. Male from Colombia has the strigulation on face more conspicuous, extending untill torulus. Females with protuberance of face more conspicuous.

Distribution. Colombia and Ecuador.

Etymology. The name refers to the absent 1R1 vein.