Decevania Huben, 2003

Kawada, Ricardo & Azevedo, Celso O., 2007, Taxonomic revision of the Neotropical ensign wasp genus Decevania (Hymenoptera: Evaniidae), Zootaxa 1496, pp. 1-30 : 4-5

Decevania Huben, 2003

Decevania: Deans & Huben, 2003: 859 –862, 867–870, 873; Deans, 2005: 1, 24–25, 121–122, 160; Deans, Gillespie & Yoder, 2006: 8 –9.

Type species. Hyptia striatigena Kieffer, 1910 by original designation.

MALE. Redescription: Head, mesosoma and metasoma black; antenna and leg dark castaneous; palpi light castaneous; wings hyaline and ocelli translucent.

Head: Punctate. Mandible with two apical teeth. Eye small, nearly circular, HE 0.88–1.75 x WE. Malar space strigate. Face above of clypeus with developed protuberance. Gena bulging in frontal view, wide in lateral view, WG 0.75–2.67 x WTO, genal carina complete. Lateral of vertex angularly convex in frontal view.

Ocellus large, DAO 0.50–1.67 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 evenly wide; pubescence subappressed, without some setae outstanding; scape short, scape LS 0.50–1.00 x HE; flagellomere I long, LF 0.80–2.17 x LP.

Mesosoma: Thorax impunctate dorsally, strongly raised. Pronotum wide in lateral view, LPR 0.25–0.75 x WTO, with conspicuous fovea in anterior corner. Mosonotum aligned. Mesoscutum wide, anterior depression with short scrobiculate, lateral carina complete; notaulus sulcate, arched. Lateral scutellar region umbilicated; posterior region of scutellum gibbous in profile; median region of scutellar groove with large fovea. Metanotum inconspicuous medially. Propodeum deeply areolate; median region of dorsal propodeum polished; posterior region flat in profile; small ridge posterolaterad of insertion of petiole large. Mesepimeron strongly scrobiculate. Mesepisternum wide; anterior region wholly areolate; posterior margin irregularly areolate; upper region irregularly areolate; lower region foveolate, 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 long, with blunt apex. Wing LFW 2.36–3.73 x LM. Basal cell setose. Stigmal vein wide, WST 0.11–0.26 x LST, apex of posterior margin convex. 1R1 vein slender distally. Stigmal + 1R1 long. Stigmal + 1R1 LST 5.00–13.33 x WTO. Set of M+CU, 1CUa, 1CUb and 2CU veins sinuous.

Metasoma: Petiole long, strigate dorsally, LPE 0.83–1.15 x LST.

Distribution. Mexico, Guatemala, Panama, Costa Rica, Colombia, Venezuela, Ecuador, Peru, and Bolivia.

Comments. Decevania resembles Hyptia Illiger, 1807 by having one closed cell in the forewing usually with M+CU, 1cua, 1cub and 2CU veins ( Fig. 4 ). Decevania has stigmal vein wider, 1R1 vein shorter (Fig. 101) and integument body less sculptured than Hyptia . The genus is the only member of the family with eight flagellomeres ( Fig. 3 ) and hind tarsomeres 1–3 (at least) projected apically into long spines (see Deans & Huben, 2003 – Fig. 1 ).

Decevania species are sexually dimorphic. The head in females is very sculptured, eyes flattened and relatively reduced with respect to head height (Figs. 61 and 89); antenna enlarged progressively from fourth flagellomere (Figs. 67 and 96); antennal pubescence considerably reduced in flagellomeres IV–XI (micropubescence area) and posterior region of metasoma expanded dorso-ventrally with ovipositor protracted (see Deans & Huben, 2003 – Fig. 1 ).

Males generally have larger bulging eyes (Figs. 7 and 16); antennal segments all the same diameter (Figs. 9 and 19); antennal pubescence regularly distributed with some higher setae evenly distributed and posterior region of metasoma constricted dorsoventrally with genitalia protracted.

The material examined consists mostly of males, but D. parva and D. unidentata sp. nov. are known only from females.

Decevania ranges from Mexico to Bolivia, but its distribution in South America mostly follows the Andes mountain range ( Fig. 105).

Figures

FIGURE 1 – 6: measurements and indices, D. unidentata sp. nov. 1. head in frontal view, DAO (diameter of anterior ocellus), HE (height of eye in frontal view), WTO (distance between torulus in frontal view); 2. head in lateral view, WE (width of eye in laterofrontal view), WG (width of gena, meansure of less distance, in lateral view); 3. LF (length of flagellomere I), LP (length of pedicel), LS (length of scape); 4. right forewing, LFW (length of forewing); 5. stigmal and 1 R 1 vein, LST (length of stigmal vein + 1 R 1 vein), WST (width of stigmal vein); 6. head, mesosoma and petiole in lateral view, LM (length of mesosoma in profile), LPE (length of petiole) LPR (length of pronotum, measure of distance between anterior and posterior edge, in profile). Illustration only for comparison, not same scale as habitus.