Grotiusomyia hansoni Hansson 2023, sp. nov.
Creators: name: Hansson, Christer
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eulophidae
Grotiusomyia
Grotiusomyia hansoni

description: Grotiusomyia hansoni sp. nov.
Figs 8, 30, 58, 83, 100
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, 1.0× as long as width of mesoscutum, F4 1.1× as long as wide, apex of clava pointed (Figs 8, 58); frons between scrobes and eyes and vertex with strong reticulation (Figs 83, 100); occipital margin with a sharp carina throughout (Fig. 83); mesoscutum and mesoscutellum with same colour and reticulation (Fig. 30); mesoscutellum convex; dorsellum flat, smooth and shiny, posterior margin medially produced to a point; fore wing with 9–12 setae in apico-dorsal part of costal cell, completely hyaline (Fig. 8); fore and mid coxae dark brown to black (Fig. 8); gaster (Fig. 30) 2.1× as long as wide; Gt 1 0.4× 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 2.9× as wide as width of posterior part, posterior margin curved forwards with sharp edge.
Description (female holotype). Length 2.0 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, smooth and shiny, posterior margin medially produced to a point. Propodeal callus with ten setae. Fore wing with five setae on dorsal surface of submarginal vein; with 15 admarginal setae; costal cell with 30 setae on ventral surface, in 2–3 rows, apico-dorsal margin with 12 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 forwards.
Colour. Head metallic blue. Mandibles yellowish-brown. Antennae with scape yellowish-white, pedicel yellowish-brown, flagellum dark brown. Mesosoma golden-green. Legs with fore and mid coxae dark brown to black, hind coxa black with metallic tinges; trochanters, femora, tibiae and tarsi yellowish-brown. Fore wing hyaline with an infuscate spot just below stigmal vein. Gaster with Gt 1 metallic bluish-purple, Gt 2 metallic blue in anterior ½ black with metallic tinges in posterior ½, remaining tergites black with metallic tinges.
Relative measurements: head length, dorsal view 22.5; head length, frontal view 24; head width 47.5; POL 9.5; OOL 4.5; mouth width 15; malar space 6; eye length 25.5; lateral ocellus diameter 5; scape length 16.5; scape width 4; pedicel length 5.5; pedicel width. dorsal view 3.5; flagellum length 40; F1 length 8; F1 width 4; F2 length 6.5; F2 width 4; F3 length 7; F3 width 5; F4 length 6; F4 width 5.5; clava length 12; clava width 6; pronotum length 20; pronotum width 30; mesosoma length 71; mesosoma width 41; midlobe of mesoscutum length 22; mesoscutellum length 22; mesoscutellum width 22; propodeum length 15; hind tibia length 39; hind tibial spur1 length 9; hind tibial spur2 length 5; hind tarsus length 32; hind basitarsus length 8.5; fore wing length 110; fore wing width 53; costal cell length 30; costal cell width 3; marginal vein length 37; postmarginal vein length 18; stigmal vein length 12; Gt 1 length 25; Gt 6 length 14.5; Gt 6 width at base 23; Gt 6 width at apex 8; gaster length 67; gaster width 32.
Variation. Length 1.8–2.0 mm. Costal cell with 9–12 setae in apico-dorsal part. Propodeal callus with 9–10 setae.
Male. Unknown.
Distribution. Costa Rica.
Etymology. Named in honor of Paul E. Hanson, collector of the paratypes.
Material. Holotype female: COSTA RICA, Heredia, Santo Domingo, INBio Parque, 9º59′N, 84º06′W, 1100m, 9.ii.2018, J.S. Noyes (NHMUK). Paratypes 2♀ COSTA RICA, Cartago, 2km NE Cachí, 1200m, vii-ix.1996, P. Hanson (MZLU, MZUCR).
description: Published as part of Hansson, Christer, 2023, Review of Grotiusomyia Girault (Chalcidoidea: Eulophidae), an exclusively New World genus, including 17 new species, pp. 39-77 in Zootaxa 5278 (1) on pages 49-50, DOI: 10.11646/zootaxa.5278.1.2, http://zenodo.org/record/7894979