Grotiusomyia leucaena, 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

Grotiusomyia leucaena sp. nov.

Figs 11 , 33 , 60 , 86 , 103

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 1.4× as long as width of mesoscutum, F4 1.5× as long as wide, apex of clava pointed, F1–F4 dark brown, F5 white with base brown, F6 white ( Figs 11 , 60 ); frons and vertex with weak reticulation ( Figs 86 , 103 ); occipital margin with a sharp carina throughout ( Fig. 86 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 33 ); mesoscutellum convex; dorsellum flat, smooth and shiny, posterior margin evenly rounded with small dents; fore wing with 5–6 setae in apico-dorsal part of costal cell, completely hyaline ( Fig. 11 ; fore coxa white, mid coxa yellowish-brown with median part black ( Fig. 11 ); gaster ( Fig. 33 ) 1.9× as long as wide; Gt 1 0.4× as long as length of gaster, dorsal surface smooth, posterior margin curved slightly forwards; Gt 6 0.2× 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 1.9 mm. Frons and vertex with weak reticulation and shiny, scrobes smooth, frons with a few 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, smooth and shiny, posterior margin ±evenly rounded with small dents. Propodeal callus with ten setae. Fore wing with six setae on dorsal surface of submarginal vein; with 16 admarginal setae; costal cell with 25 setae on ventral surface, partly in two rows, apico-dorsal margin with six 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 bluish-green, scrobes black. Mandibles yellowish-brown.Antennae with scape yellowish-white, pedicel pale brown, F1–F4 dark brown, F5 white with base brown, F6 white. Mesosoma golden-green. Legs with fore coxa white, mid coxa yellowish-brown with median part black, hind coxa black with metallic tinges; trochanters yellowish-white; femora, tibiae and tarsi yellowish-brown. Gaster with Gt 1 metallic bluish-green, remaining tergites black with metallic tinges.

Relative measurements: head length, dorsal view 21; head length, frontal view 34; head width 46; POL 9; OOL 5.5; mouth width 14; malar space 5; eye length 26; lateral ocellus diameter 4; scape length 18; scape width 4.5; pedicel length 5.5; pedicel width. dorsal view 4; flagellum length 53; F1 length 9; F1 width 4; F2 length 8.5; F2 width 4.5; F3 length 10; F3 width 5.5; F4 length 9; F4 width 6; clava length 12; clava width 6; pronotum length 19; pronotum width 29; mesosoma length 62; mesosoma width 37; midlobe of mesoscutum length 22; mesoscutellum length 21; mesoscutellum width 19; propodeum length 14.5; hind tibia length 43; hind tibial spur1 length 8; hind tibial spur2 length 4; hind tarsus length 33; hind basitarsus length 8; fore wing length 110; fore wing width 45; costal cell length 32; costal cell width 3; marginal vein length 35; postmarginal vein length 15; stigmal vein length 12; Gt 1 length 22; Gt 6 length 10; Gt 6 width at base 21; Gt 6 width at apex 11; gaster length 62; gaster width 33.

Variation. Length 1.6–1.9 mm. Costal cell with 5–6 setae in apico-dorsal part. Propodeal callus with 8–10 setae.

Male. Unknown.

Distribution. Costa Rica.

Etymology. From the Greek leukos = white, referring to the predominantly white antennal clava.

Material. Holotype female: COSTA RICA, Puntarenas, Reserva Privada Karen Mogensen , 9º52′N, 85º03′W, 305m, 23-24.ii.2007, J.S. Noyes ( NHMUK) . Paratypes (3♀, MZLU, NHMUK) : 2♀ from same locality as holotype but collected 14-15.ii.2005 ; 1♀ COSTA RICA, Puntarenas, Peninsula Osa, Puerto Jimenez , 8º32′N, 83º19′W, 10m, viii.1991, P. Hanson .

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.