Grotiusomyia annesmithae sp. nov.

Figs 4, 23, 24, 51, 52, 74, 75, 79, 96

Diagnosis. Mandibles yellowish-white, with a row of small teeth at apex (as in Fig. 112); flagellum dark brown, 0.7× as long as width of mesoscutum, F4 0.7× as long as wide, apex of clava pointed (Figs 4, 51); frons between scrobes and eyes and vertex with strong reticulation (Figs 74, 96); occipital margin with an edge behind ocellar triangle (Fig. 79); mesoscutum and mesoscutellum with same colour and reticulation (Figs 23, 75); mesoscutellum convex; dorsellum flat, with weak reticulation, posterior margin evenly rounded; fore wing completely hyaline, with 4–6 setae in apico-dorsal part of costal cell (Fig. 4); fore and mid coxae dark brown with apex yellowish-brown (Fig. 4); gaster (Fig. 23) 1.8× as long as wide; Gt 1 0.3× as long as length of gaster, dorsal surface smooth, posterior margin straight; Gt 6 0.2× as long as length of gaster with anterior part 2.2× as wide as width of posterior part, posterior margin straight with edge ±blunt.

Description (female holotype). Length 1.9 mm. Frons between scrobes and eyes and vertex with strong reticulation, scrobes smooth. Mandibles with a row of small teeth at apex. Occipital margin with an edge behind ocellar triangle. Dorsellum flat, with weak reticulation, posterior margin ±evenly rounded. Propodeal callus with ten setae. Fore wing with six setae on dorsal surface of submarginal vein; with 12 admarginal setae; costal cell with 12 setae on ventral surface in a single row, apico-dorsal margin with four setae; speculum distinct and closed below. Gaster long ovate; Gt 1 smooth and shiny without sculpture, remaining tergites with weak reticulation; Gt 1 and Gt 6 with posterior margin straight.

Colour. Head metallic bluish-green, scrobes black. Mandibles yellowish-white.Antennae with scape yellowish-brown, pedicel pale brown, flagellum dark brown. Mesosoma black with metallic tinges. Legs with fore and mid coxae dark brown with apex yellowish-brown, hind coxa black with metallic tinges, trochanters, tibiae and tarsi pale yellowish-brown, fore and mid femora yellowish-brown, hind femur yellowish-brown in basal ½ and dark brown in apical ½. Gaster black with metallic tinges.

Relative measurements: head length, dorsal view 17.5; head length, frontal view 34; head width 44; POL 9.5; OOL 6; mouth width 14; malar space 9; eye length 21.5; lateral ocellus diameter 4; scape length 16; scape width 3.5; pedicel length 5.5; pedicel width. dorsal view 4; flagellum length 28; F1 length 4.5; F1 width 4.5; F2 length 4.5; F2 width 5; F3 length 4.5; F3 width 6; F4 length 4; F4 width 6; clava length 9.5; clava width 6; pronotum length 14; pronotum width 34; mesosoma length 60; mesosoma width 41; midlobe of mesoscutum length 23; mesoscutellum length 20; mesoscutellum width 20; propodeum length 10; hind tibia length 35; hind tibial spur1 length 6; hind tibial spur2 length 3; hind tarsus length 24; hind basitarsus length 7; fore wing length 104; fore wing width 47; costal cell length 32; costal cell width 3; marginal vein length 30; postmarginal vein length 12; stigmal vein length 9; Gt 1 length 21; Gt 6 length 12; Gt 6 width at base 27; Gt 6 width at apex 12.5; gaster length 73; gaster width 40.

Variation. Length of body 1.6–1.9 mm. Costal cell with 4–6 setae in apico-dorsal part. Propodeal callus with 10–16 setae.

Male. Length 1.3 mm. Fore and mid coxae dark brown, femora predominantly brown to dark brown. Otherwise as in female.

Relative measurements: head length, dorsal view 14; head width 35; eye length 16; scape length 12.5; scape width 3.5; flagellum length 21.5; F1 length 3.5; F1 width 3.5; F2 length 3.5; F2 width 3.5; F3 length 3.5; F3 width 4; F4 length 4; F4 width 4.5; clava length 7.5; clava width 4; Gt 1 length 17; gaster length 43; gaster width 29.

Distribution. Costa Rica.

Hosts. Reared as primary parasitoid from Herpetogramma salbialis (Hampson) and Ategumia lotanalisDHJ09 ( Lepidoptera: Crambidae), and from Calpodes ethlius (Stoll) ( Lepidoptera: Hesperiidae).

Etymology. Named in honor of Mrs. Anne Smith of Arlington, Virginia, an international lawyer in recognition of her professional base in theories and principles put forward by Hugo Grotius (1583-1645) who established modern international law, and in recognition of her years of vigorous defense of Área de Conservación Guanacaste as a new UNESCO World Heritage Site.

Material. Holotype female: COSTA RICA, Alajuela, San Cristobal, LN 318056_383200, 600-620m, 17.viii-17.ix.1996, F.A. Quesada (NHMUK). Paratypes (6♀ 2♁, MZLU, NHMUK): 2♀ COSTA RICA, Alajuela, ACG, Sector Rincón Rain Forest, Estación Llanura, 323744N 399223E, 135m, 27.v.2009, C. Umaña, ex Ategumia lotanalisDHJ09 on Miconia lacera (Melastomataceae) (09-SRNP-44363); 3♀ 2♁ COSTA RICA, Guanacaste, ACG, Sector Pitilla, Medrano, 332938N 385347E, 380m, 18.i.2010, D. Martinez, ex Herpetogramma salbialis on Baccharis trinervis (Asteraceae) (10-SRNP-70327); 1♀ COSTA RICA, Guanacaste,ACG, Sector Santa Rosa, Cafetal, 315575N 360101E, 280m, 15.viii.1992, R. Moraga, ex Calpodes ethlius on Marantha arundinacea (92-SRNP-4937).