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

description: Grotiusomyia guanacastensis sp. nov.
Figs 7, 29, 56, 82, 99
Diagnosis. Mandibles dark brown with apex yellowish-brown, with a row of small teeth at apex (as in Fig. 112); flagellum dark brown, 0.7× as long as width of mesoscutum, F4 0.6× as long as wide, apex of clava pointed (Figs 7, 56); frons between scrobes and eyes and vertex with strong reticulation (Figs 82, 99); occipital margin with an edge behind ocellar triangle (Fig. 82); mesoscutum and mesoscutellum with same colour and reticulation (Fig. 29); mesoscutellum convex; dorsellum ±flat, smooth and shiny, posterior margin ±evenly rounded; fore wing with 4–5 setae in apico-dorsal part of costal cell, completely hyaline (Fig. 7); coxae black with metallic tinges (Fig. 7); gaster (Fig. 29) 1.8× as long as wide; Gt 1 0.3× as long as length of gaster, dorsal surface smooth, posterior margin sinuate; Gt 6 0.1× as long as length of gaster with anterior part 1.7× as wide as width of posterior part, posterior margin straight with sharp edge.
Description (female holotype). Length 2.1 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 an edge behind ocellar triangle. Dorsellum ±flat, smooth and shiny, posterior margin ±evenly rounded. Propodeal callus with 18 setae. Fore wing with seven setae on dorsal surface of submarginal vein; with 16 admarginal setae; costal cell with 18 setae on ventral surface in a single row, apico-dorsal margin with five 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 sinuate, Gt 6 with posterior margin straight.
Colour. Head black with metallic tinges. Mandibles dark brown with apex yellowish-brown. Antennae with scape yellowish-brown, pedicel and flagellum dark brown. Mesosoma black with metallic tinges. Legs with coxae black with metallic tinges, trochanters and femora dark brown, tibiae and tarsi yellowish-brown. Gaster black with metallic tinges.
Relative measurements: head length, dorsal view 20; head length, frontal view 35; head width 47; POL 11.5; OOL 4.5; mouth width 13; malar space 10; eye length 23; lateral ocellus diameter 4; scape length 17; scape width 4; pedicel length 5.5; pedicel width. dorsal view 3.5; flagellum length 31; F1 length 4.5; F1 width 4; F2 length 4; F2 width 5; F3 length 4; F3 width 6; F4 length 4; F4 width 6.5; clava length 10; clava width 6; pronotum length 18; pronotum width 38; mesosoma length 66; mesosoma width 45; midlobe of mesoscutum length 23; mesoscutellum length 20; mesoscutellum width 22; propodeum length 10; hind tibia length 41; hind tibial spur1 length 5; hind tibial spur2 length 3; hind tarsus length 26; hind basitarsus length 8.5; fore wing length 106; fore wing width 48; costal cell length 36; costal cell width 3.5; marginal vein length 29; postmarginal vein length 14; stigmal vein length 11.5; Gt 1 length 22; Gt 6 length 9; Gt 6 width at base 26; Gt 6 width at apex 15; gaster length 80; gaster width 44.
Variation. Length of body 1.6–2.1 mm. Costal cell with 4–5 setae in apico-dorsal part. Propodeal callus with 10–18 setae.
Male. Unknown.
Distribution. Costa Rica.
Etymology. Named for type area, the province Guanacaste.
Material. Holotype female: COSTA RICA, Guanacaste, Parque Nacional Santa Rosa, 300m, SE-6-C, 7- 28.xii.1985, D.H. Janzen & I.D. Gauld (NHMUK). Paratypes (3♀, MZLU; NHMUK): 1♀ from same locality as holotype but collected 8.ii-2.iii.1986; barcoded specimens: 1♀ COSTA RICA, Guanacaste, Area de Conservacion Guanacaste, Sector Pailas, Pailas Dos PL12-5, 10.7632°N 85.3338°W, 831m 16-23.iii.2017, D. Janzen, W. Hallwachs (BIOUG57030 -G11); 1♀ from same locality as previous but collected 23.ii-2.ii.2017 (BIOUG60816 -C11).
Non-type material: 1♀ COSTA RICA, Guanacaste, Area de Conservacion Guanacaste; Sector Pailas, Pailas Dos PL12-3, 10.7631°N 85.3344°W, 820m, 23-30.iv.2015, D. Janzen W. Hallwachs, (strongly fragmented specimen) (BIOUG 44761 -D10) (MZLU). This specimen is barcoded, but because of bad fragmentation with parts missing it is not included as type material.
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 48-49, DOI: 10.11646/zootaxa.5278.1.2, http://zenodo.org/record/7894979