Oodera fidelis sp. n. Figs 2d, 5d, 8d, 11d, 14d

Diagnosis .

BOTH SEXES (N = 3). Small-sized (6.48-6.80 mm). Head and mesosoma dark green to blue. Fore wing partly infumate. Body robust to slender (mesonotum 1.29-1.47 × as long as wide). Head round (1.33-1.41 × as high as long). Eyes large (0.61-0.67 × as high as head) (Fig. 8d). Corona medium to thick (4.00-6.00 × as long as wide), structure continuous (Fig. 4d). Pronotum pentagonal with posterior part hardly narrowing towards mesoscutum, with broadest part before midlength (Fig. 11d). Mesoscutellum slender (0.75-0.87 × as long as wide), anterior margin convex (part anterior to imaginary transverse line connecting posterior margins of axillae more than 1/3 of mesoscutellum length; 0.37-0.39), mesoscutellum completely lineate, with median lines converging (Fig. 14d). Propodeum large (0.19-0.20 × as long as mesoscutum) (Fig. 14d). Profemur elongated (2.23-2.51 × as long as wide). Marginal vein long (1.11-1.19 × as long as postmarginal vein).

FEMALE. Metasoma medium (0.45-0.46 × as long as body). Ovipositor short (0.13-0.13 × as long as metasoma) (Fig. 2d).

Description.

BOTH SEXES. Colour (Figs 2d, 5d, 8d, 11d, 14d). Scape yellow, darkening apically, rest of antenna dark brown. Procoxa and profemur dark green, all other parts of legs dark yellow, except for brown meso- and metafemur. Metasoma brown.

Head (Figs 5d, 8d). Face completely reticulate. Head 1.39-1.45 × as wide as long. Head width 3.18-3.66 × eye distance. Malar space 0.33-0.37 × head height. Corona 0.57-0.76 × as long as eye height. POL 0.6-1.00 × OOL. Scape 2.18-2.86 × as long as pedicel. Clava 0.14-0.18 × as long as funicle. Flagellum 1.29-1.50 × as long as head width.

Mesosoma (Figs 11d, 14d). Pronotum 0.83-1.10 × as long as wide. Pronotum 0.44-0.64 × as long as mesonotum. Mesonotum 1.44-1.47 × as long as mesoscutum. Mesoscutum 0.89-1.02 × as long as wide. Mesoscutellum 0.44-0.47 × as long as mesoscutum. Profemur 1.27-1.43 × as long as protibia.

Wings (Fig. 2d). Fore wing 2.80-2.97 × as long as wide. Costal cell 0.35-0.40 × as long as fore wing. Marginal vein 0.20-0.21 × as long as fore wing. Marginal vein 2.95-3.64 × as long as stigmal vein. Postmarginal vein 2.11-3.27 × as long as stigmal vein.

Material examined.

ASIA. Vietnam: female holotype, Ha Tinh Huong son, 900 m, 18°22'N / 105°13'E, leg. L. Herman, MT, 05.05.1998 (CNC) (OFi01); two male paratypes, Ha Tinh Huong son, 900 m, 18°22'N / 105°13'E, leg. L. Herman, MT, 18.- 28.5.1998 (CNC) (OFi02), (ZFMK) (OFi03) .

Biology.

Unknown.

Distribution.

Vietnam.

Etymology.

Named after the latin adjective Oodera fidelis, meaning faithful, because of the distinct blueish colour of head and mesosoma and blue being the symbolic colour of trust.