Grotiusomyia lascrucensis, 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 : 51

Grotiusomyia lascrucensis sp. nov.

Figs 10 , 32 , 59 , 85 , 101 , 112

Diagnosis. Mandibles white with a row of small teeth at apex ( Fig. 112 ); flagellum dark brown, 0.8× as long as width of mesoscutum, F4 0.7× as long as wide, apex of clava pointed ( Figs 10 , 59 ); frons between scrobes and eyes and vertex with strong reticulation ( Figs 85 , 112 ); occipital margin with a sharp edge behind ocellar triangle ( Fig. 85 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 32 ); mesoscutellum convex; dorsellum flat, smooth and shiny, posterior margin evenly rounded with a few small dents; fore wing with seven setae in apico-dorsal part of costal cell, completely hyaline ( Fig. 10 ); fore and mid coxae yellowish-white ( Fig. 10 ); gaster ( Fig. 32 ) 1.8× as long as wide; Gt 1 0.3× as long as length of gaster, dorsal surface smooth, posterior margin curved slightly forwards; Gt 6 0.1× as long as length of gaster with anterior part 1.9× as wide as width of posterior part, posterior margin straight with sharp edge.

Description (female holotype). Length 2.0 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 only. Dorsellum flat, smooth and shiny, posterior margin evenly rounded with a few small dents. Propodeal callus with eleven setae. Fore wing with seven setae on dorsal surface of submarginal vein; with 18 admarginal setae; costal cell with a row of 12 setae on ventral surface, apico-dorsal margin with seven setae; speculum distinct and closed below. Gaster long ovate; Gt 1 smooth and shiny without sculpture, remaining tergites with weak reticulation; Gt 1 with posterior margin curved slightly forwards, Gt 6 with posterior margin straight.

Colour. Head metallic green to greenish-blue. Mandibles white. Antennae with scape pale yellowish-brown, pedicel yellowish-brown, flagellum dark brown. Mesosoma black with metallic tinges. Fore and mid leg yellowish-white, hind leg with coxa black with metallic tinges, trochanter, tibia and tarsus yellowish-white, femur yellowish-brown. Gaster black with metallic purple tinges.

Relative measurements: head length, dorsal view 20; head length, frontal view 37; head width 45; POL 10.5; OOL 5; mouth width 18; malar space 8; eye length 24; lateral ocellus diameter 4.5; scape length 16; scape width 4; pedicel length 5; pedicel width. dorsal view 4; flagellum length 32; F1 length 5; F1 width 5; F2 length 5.5; F2 width 5.5; F3 length 5; F3 width 6.5; F4 length 4.5; F4 width 6.5; clava length 11.5; clava width 6.5; pronotum length 16; pronotum width 33; mesosoma length 64; mesosoma width 41; midlobe of mesoscutum length 25; mesoscutellum length 20; mesoscutellum width 19; propodeum length 11; hind tibia length 41; hind tibial spur1 length 5; hind tibial spur2 length 2.5; hind tarsus length 31; hind basitarsus length 9; fore wing length 115; fore wing width 51; costal cell length 35; costal cell width 3; marginal vein length 34; postmarginal vein length 15; stigmal vein length 10; Gt 1 length 21; Gt 6 length 10; Gt 6 width at base 26; Gt 6 width at apex 14; gaster length 74; gaster width 41.

Male. Unknown.

Distribution. Costa Rica.

Etymology. Name referring to the type locality.

Material. Holotype female: COSTA RICA, Puntarenas, San Vito, Las Cruces, Wilson Botanico , 8º47′N, 82º58′W, 1000–1300m, 19–29.ii.2008, C. Hansson ( MZLU).

Figures

FIGURES 7–12. Grotiusomyia spp. nov., body in lateral view, females; 7 G. guanacastensis, holotype; 8 G. hansoni, holotype; 9 G. jimenezi, holotype; 10 G. lascrucensis, holotype; 11 G. leucaena, holotype; 12 G. nicoyae, holotype.

FIGURES 31–36. Grotiusomyia spp. nov., body in dorsal view; 31 G. jimenezi, female holotype; 32 G. lascrucensis, female holotype; 33 G. leucaena, female paratype; 34 G. nicoyae, female holotype; 35–36. G. noyesi; 35 female holotype; 36 male paratype.

FIGURES 58–64. Grotiusomyia spp. nov., head+antenna in lateral view; 58 G. hansoni, female holotype; 59 G. lascrucensis, female holotype; 60 G. leucaena, female holotype; 61 G. nicoyae, female holotype; 62 G. reticulata, female paratype; 63–64. G. noyesi; 63 female paratype; 64 male paratype.

FIGURES 84–91. Grotiusomyia spp. nov., vertex, females; 84 G. jimenezi, holotype; 85 G. lascrucensis, holotype; 86 G. leucaena, paratype; 87 G. nicoyae, holotype; 88 G. noyesi, holotype; 89 G. phalaros, holotype; 90 G. pilosa, holotype; 91 G. reticulata, holotype.

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.