Grotiusomyia flavimacula, 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 : 47-48

Grotiusomyia flavimacula sp. nov.

Figs 6 , 28 , 55 , 81 , 98

Diagnosis. Mandibles yellowish-brown with base brown, with a row of small teeth at apex (as in Fig. 112 ); flagellum dark brown, 1.1× as long as width of mesoscutum, F4 1.3× as long as wide, apex of clava pointed ( Figs 6 , 55 ); frons dark with two white spots lateral to toruli and close to eye margin ( Fig. 98 ); frons between scrobes and vertex with strong reticulation ( Figs 81 , 98 ); occipital margin with a sharp edge behind ocellar triangle ( Fig. 81 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 28 ); mesoscutellum convex; dorsellum ±flat, with weak reticulation, medio-posterior part protruding, with postero-lateral parts incised; fore wing with ten setae in apico-dorsal part of costal cell, completely hyaline, speculum small ( Fig. 6 ); fore and mid coxae yellowish-brown ( Fig. 6 ); gaster ( Fig. 28 ) 1.7× as long as wide; Gt 1 0.4× as long as length of gaster, dorsal surface smooth and shiny, posterior margin straight; Gt 6 0.1× as long as length of gaster with anterior part 1.6× as wide as width of posterior part, posterior margin straight with sharp edge.

Description (female holotype). Length 1.8 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 a sharp edge behind ocellar triangle. Dorsellum ±flat, with weak reticulation, medio-posterior part protruding, with postero-lateral parts incised. Propodeal callus with eight setae. Fore wing with five setae on dorsal surface of submarginal vein; with 18 admarginal setae; costal cell with 25 setae in two rows on ventral surface, apico-dorsal margin with ten setae; speculum small and closed below. Gaster ovate; Gt 1 smooth and shiny, remaining tergites with weak reticulation; Gt 1 and Gt 6 with posterior margin straight.

Colour. Head metallic bluish-green, scrobes black with metallic tinges, frons with two white spots lateral to toruli and close to eye margin. Mandibles yellowish-brown with base brown.Antennae with scape yellowish-brown, pedicel pale brown, flagellum dark brown. Mesosoma black with metallic green tinges; dorsellum metallic purple. Fore and mid leg yellowish-brown, hind leg yellowish-brown with coxa black with metallic tinges. Gaster with Gt 1 metallic bluish-green, remaining tergites dark brown to black with metallic tinges.

Relative measurements: head length, dorsal view 19; head length, frontal view 30; head width 44; POL 9; OOL 5.5; mouth width 10.5; malar space 7; eye length 21; lateral ocellus diameter 5; scape length 15; scape width 3.5; pedicel length 6; pedicel width. dorsal view 4; flagellum length 38; F1 length 7; F1 width 4; F2 length 5.5; F2 width 5; F3 length 6; F3 width 5; F4 length 6; F4 width 4.5; clava length 11; clava width 4.5; pronotum length 18; pronotum width 29; mesosoma length 65; mesosoma width 35; midlobe of mesoscutum length 18; mesoscutellum length 20; mesoscutellum width 19; propodeum length 14; hind tibia length 36; hind tibial spur1 length 9; hind tibial spur2 length nm; hind tarsus length 30; hind basitarsus length 9.5; fore wing length 105; fore wing width 50; costal cell length 30; costal cell width 3; marginal vein length 33; postmarginal vein length 15.5; stigmal vein length 11; Gt 1 length 23; Gt 6 length 5.5; Gt 6 width at base 21; Gt 6 width at apex 13; gaster length 60; gaster width 35.5.

Male. Unknown.

Distribution. Costa Rica.

Etymology. From the Latin flavus = yellow, and macula = spot, referring to yellowish spots on frons.

Material. Holotype female: COSTA RICA, Alajuela, Estación Biológica San Ramón , 10°13'N, 84°37'W, 900m, viii-ix.1997, P. Hanson ( NHMUK).

Figures

FIGURES 1–6. Grotiusomyia spp., body in lateral view, females; 1 G. flavicornis Girault, non-type specimen from USA, Iowa; 2 G. nigricans (Howard), non-type specimen from the West Indies; 3 G. albiclava sp. nov., paratype; 4 G. annesmithae sp. nov., holotype; 5 G. azofeifai sp. nov., paratype; 6 G. flavimacula sp. nov., holotype.

FIGURES 25–30. Grotiusomyia spp., body in dorsal view; 25–26. G. azofeifai sp. nov.; 25 female paratype; 26 male paratype; 27 G. flavicornis Girault, female non-type; 28 G. flavimacula sp. nov., female holotype; 29 G. guanacastensis sp. nov., female holotype; 30 G. hansoni sp. nov., female holotype.

FIGURES 51–57. Grotiusomyia spp. nov., head+antenna in lateral view; 51–52. G. annesmithae; 51 female holotype; 52 male paratype; 53–54. G. azofeifai; 53 female paratype; 54 male paratype; 55 G. flavimacula, female holotype; 56 G. guanacastensis, female holotype; 57 G. jimenezi, female holotype.

FIGURES 76–83. Grotiusomyia spp., vertex, females; 76 G. flavicornis Girault, non-type; 77 G. nigricans (Howard), non-type; 78 G. albiclava sp. nov., holotype; 79 G. annesmithae sp. nov., holotype; 80 G. azofeifai sp. nov., paratype; 81 G. flavimacula sp. nov., holotype; 82 G. guanacastensis sp. nov., holotype; 83 G. hansoni sp. nov., paratype.

FIGURES 92–102. Grotiusomyia spp., females; 92–93. Vertex; 92 G. rubii sp. nov., holotype; 93 G. septentrionalis sp. nov., holotype; 94–102. Head in frontal view; 94 G. nigricans (Howard), non-type specimen; 95 G. albiclava sp. nov., holotype; 96 G. annesmithae sp. nov., holotype; 97 G. azofeifai sp. nov., paratype; 98 G. flavimacula sp. nov., holotype; 99 G. guanacastensis sp. nov., paratype; 100 G. hansoni sp. nov., holotype; 101 G. lascrucensis sp. nov., holotype; 102 G. jimenezi sp. nov., holotype.

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.