Grotiusomyia flavicoxa, Hansson, 2023

Hansson, Christer, 2023, Review of Grotiusomyia Girault (Chalcidoidea: Eulophidae), an exclusively New World genus, including 17 new species, Zootaxa 5278 (1), pp. 39-77 : 47

Grotiusomyia flavicoxa sp. nov.

Figs 113–115

Diagnosis. Mandibles yellowish-brown with a large tooth at apex and with a row of small teeth above large tooth (as in Fig. 111 ); flagellum dark brown, 1.2× as long as width of mesoscutum, F4 1.1× as long as wide, apex of clava pointed ( Figs 114, 115 ); frons between scrobes and eyes and vertex with strong reticulation ( Fig. 115 ); occipital margin with a sharp carina throughout ( Fig. 114 ); mesoscutum and mesoscutellum with same colour ( Fig. 113 ); mesoscutellum convex, meshes on median part smaller than on lateral parts ( Fig. 113 ); dorsellum flat, with very weak reticulation and shiny, posterior margin evenly curved; fore wing ( Fig. 113 ) with six setae in apico-dorsal part of costal cell, completely hyaline; fore and mid coxae yellowish-brown with base pale brown; gaster ( Fig. 113 ) 2.1× 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 2.1× as wide as width of posterior part, posterior margin curved backwards with sharp edge.

Description (female holotype). Length 1.7 mm. Frons between scrobes and eyes and vertex with strong reticulation, scrobes smooth, frons with ±evenly scattered setae between scrobes and eyes. Mandibles with a large tooth at apex and with a row of small teeth above large tooth. Occipital margin with a sharp carina throughout. Dorsellum flat, with very weak reticulation and shiny, posterior margin evenly curved. Propodeal callus with nine setae. Fore wing with five setae on dorsal surface of submarginal vein; with 12 admarginal setae; costal cell with 25 setae on ventral surface, in two rows, apico-dorsal margin with six setae; speculum small and closed below. Gaster elongate; Gt 1 smooth and shiny, remaining tergites with weak reticulation; Gt 1 with posterior margin straight, Gt 6 with posterior margin curved backwards.

Colour. Head golden-green. Mandibles yellowish-brown. Antennae with scape and pedicel yellowish-brown, flagellum pale brown. Mesosoma golden-green. Legs with fore and mid coxae yellowish-brown with base pale brown, hind coxa black with metallic tinges; trochanters, femora, tibiae and tarsi yellowish-brown. Fore wing hyaline. Gaster with Gt

1 metallic bluish-green, remaining tergites dark brown with metallic tinges.

Relative measurements: head length, dorsal view 18; head length, frontal view 28; head width 40; POL 7.5; OOL 4.5; mouth width 12; malar space 5; eye length 21; lateral ocellus diameter 4; scape length 14; scape width 3.5; pedicel length 6; pedicel width. dorsal view 3.5; flagellum length 38; F1 length 6; F1 width 4.5; F2 length 5.5; F2 width 4.5; F3 length 5.5; F3 width 5; F4 length 5.5; F4 width 5; clava length 10; clava width 5; pronotum length 12; pronotum width 26; mesosoma length 55; mesosoma width 32.5; midlobe of mesoscutum length 14; mesoscutellum length 17.5; mesoscutellum width 17.5; propodeum length 11; hind tibia length 32; hind tibial spur1 length 5; hind tibial spur2 length 3; hind tarsus length 23; hind basitarsus length 5; fore wing length 92; fore wing width 41; costal cell length 26; costal cell width 2; marginal vein length 27; postmarginal vein length 11.5; stigmal vein length 8.5; Gt 1 length 17; Gt 6 length 14; Gt 6 width at base 22; Gt 6 width at apex 10.5; gaster length 60; gaster width 28.5.

Male. Unknown.

Distribution. Costa Rica.

Etymology. From the Latin flavus = yellow and coxa, named after the yellowish-brown fore and mid coxae.

Remarks. The head has become detached from the body but is glued to same card.

Material. Holotype female: COSTA RICA, Guanacaste, Area de Conservacion Guanacaste, Sector Pailas, Pailas Dos PL12-5 , 10.7632°N 85.3338°W, 831m 16-23.iii.2017, D. Janzen, W. Hallwachs ( BIOUG57030 -E05) ( MZLU).

Figures

FIGURES 113–115. Grotiusomyia flavicoxa sp. nov., female holotype; 113 body, excl. head, in dorsal view; 114 vertex and antennae; 115 head and antennae in frontal view.

FIGURES 103–112. Grotiusomyia spp. nov., females; 103–110. Head in frontal view; 103 G. leucaena, paratype; 104 G. nicoyae, paratype; 105 G. noyesi, holotype; 106 G. phalaros, paratype; 107 G. pilosa, paratype; 108 G. reticulata, paratype; 109 G. rubii, holotype; 110 G. septentrionalis, paratype; 111–112. Mandibles; 111 G. phalaros, paratype; 112 G. lascrucensis, holotype.