Grotiusomyia nicoyae, 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 : 52-53

Grotiusomyia nicoyae sp. nov.

Figs 12 , 34 , 61 , 87 , 104

Diagnosis. Mandibles yellowish-white, with a row of small teeth at apex (as in Fig. 112 ); flagellum pale brown, 0.7× as long as width of mesoscutum, F4 0.7× as long as wide, apex of clava pointed ( Figs 12 , 61 ); frons between scrobes and eyes and vertex with strong reticulation ( Figs 87 , 104 ); occipital margin with an edge behind ocellar triangle ( Fig. 87 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 34 ); mesoscutellum convex; dorsellum ±flat, smooth and shiny, posterior margin ±evenly rounded; fore wing with 2–4 setae in apico-dorsal part of costal cell, completely hyaline ( Fig. 12 ); fore coxa white, mid coxa yellowish-brown ( Fig. 12 ); gaster ( Fig. 34 ) 1.6× as long as wide; Gt 1 0.4× 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 1.8× 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 weakly concave medially, smooth and shiny, posterior margin ±evenly rounded with a few small dents medially. Propodeal callus with 14 setae. Fore wing with five setae on dorsal surface of submarginal vein; with 14 admarginal setae; costal cell with a row of 12 setae on ventral surface, apico-dorsal margin with two 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 black with metallic green tinges, scrobes black. Mandibles yellowish-white.Antennae pale brown. Mesosoma black with metallic tinges. Fore coxa white, mid coxa yellowish-brown, hind coxa black with metallic tinges; remaining parts of legs yellowish-white. Gt 1 black with metallic blue tinges, remaining tergites black with metallic tinges.

Relative measurements: head length, dorsal view 17; head length, frontal view 35; head width 46; POL 11.5; OOL 5; mouth width nm; malar space 7; eye length 22; lateral ocellus diameter 4; scape length 16; scape width 3.5; pedicel length 5.5; pedicel width. dorsal view 3.5; flagellum length 26; F1 length 4; F1 width 5; F2 length 3.5; F2 width 5; F3 length 3.5; F3 width 5; F4 length 3.5; F4 width 5; clava length 8; clava width 5; pronotum length 17; pronotum width 34; mesosoma length 61; mesosoma width 40; midlobe of mesoscutum length 23; mesoscutellum length 19.5; mesoscutellum width 21; propodeum length 12; hind tibia length 39; hind tibial spur1 length 5; hind tibial spur2 length 3; hind tarsus length 28; hind basitarsus length 7; fore wing length 100; fore wing width 44; costal cell length 32; costal cell width 3; marginal vein length 30; postmarginal vein length 15; stigmal vein length 10; Gt 1 length 22; Gt 6 length 9; Gt 6 width at base 20; Gt 6 width at apex 11; gaster length 62; gaster width 39.

Variation. Costal cell with 2–4 setae in apico-dorsal part. Propodeal callus with 10–14 setae.

Male. Unknown.

Distribution. Costa Rica.

Etymology. Referring to type locality. Karen Mogensen Private Reserve is situated on the Nicoya Peninsula.

Material. Holotype female: COSTA RICA, Puntarenas, Reserva Privada Karen Mogensen , 9º52′N, 85º03′W, 305m, 23-24.ii.2007, J.S. Noyes ( NHMUK).

Non-type material: 1♀ COSTA RICA, Guanacaste, Area de Conservacion Guanacaste , Sector Pailas, Pailas Dos PL12-3, 10.7631°N 85.3344°W, 820m 11-18.xii.2014, D. Janzen, W. Hallwachs ( BIOUG44129 -D07) ( MZLU). This specimen is barcoded, but because of bad fragmentation with parts missing it is not included as type material.

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 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.