Grotiusomyia nigricans
Creators: name: Hansson, Christer
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eulophidae
Grotiusomyia
Grotiusomyia nigricans

description: Grotiusomyia nigricans (Howard)
Figs 2, 19, 20, 47, 48, 77, 94
Miotropis nigricans Howard, 1894:95. Lectotype female in NHMUK, designated by Bouček (1977:13), examined.
Derostenus violaceus Howard, 1897:166–167. Holotype male in NHMUK, examined. Synonymized by Bouček (1977:13). Grotiusomyia nigricans (Howard), Girault (1918:126).
Diagnosis. Mandibles yellowish-brown with a row of small teeth at apex; flagellum pale brown, 0.6× as long as width of mesoscutum, F4 0.6× as long as wide, apex of clava blunt (Fig. 47); frons between scrobes and eyes and vertex with strong reticulation (Figs 77, 94); occipital margin with an edge behind ocellar triangle (Fig. 77); mesoscutum and mesoscutellum with same colour and reticulation (Fig. 19); mesoscutellum convex; dorsellum flat, smooth and shiny, posterior margin ±evenly rounded with several sharp dents; fore wing with 3–5 setae in apico-dorsal part of costal cell, completely hyaline (Fig. 2); fore and mid coxae black with metallic tinges (Fig. 2); gaster (Fig. 19) 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 0.2× as long as length of gaster with anterior part 2.7× as wide as width of posterior part, posterior margin straight with sharp edge.
Variation. Length 1.3–2.0 mm. Costal cell with 3–5 setae in apico-dorsal part. Propodeal callus with 10–13 setae. The specimens from Costa Rica have antennal flagellum darker (dark yellowish-brown to pale brown) than specimens from the West Indies (yellowish-brown).
Distribution. Bahamas (Bouček 1977), Costa Rica (new record), Cuba (Thompson 1955), Dominican Republic (De Santis 1989), Grenada (Howard 1897), Puerto Rico (Thompson 1955), St. Vincent & Grenadines (Howard 1894).
Hosts. Hedylepta indicata (Fabricius) (Pyralidae) and Urbanus proteus (L.) (Thompson, 1955).
Material. Type material: Lectotype ♀ of Miotropis nigricans (NHMUK), holotype ♁ of Derostenus violaceus (NHMUK). Non-type material (21♀ 5♁, in MZLU, MZUCR, NHMUK): BAHAMAS, San Andros, 15.ix.1975, ex leaf roller on soybean (1♀ 1♁). COSTA RICA: Heredia, Santo Domingo, INBio Parque, 9º59′N, 84º06′W, 1100m, 13.ii.2016 (1♀); Heredia, Estación Biológica La Selva, 50m, 10º26′N, 84º01′W, iv.1994 (1♀), 1♀ from same locality as previous but collected 30-31.iii.2003; Limón, Reserva Biológica Hitoy Cerere, 9º40′N, 83º02′W, 100m, 14-18.i.1991 (1♀); Limón, Parque Nacional Cahuita, 9º43′N, 82º49′W, 10m, 24.ii.2010 (8♀ 3♁). GRENADA: Lake Antoine Est., Windward side, [no date] (1♀); Mirabeau Est., Windward side, [no date] (1♀). St. VINCENT: St. David, Richmond Beach, 10.vii.1976 (1♀ 1♁); St. George, Belmont, 6.vii.1976 (2♀); Charlotte, Mesopotamia, 8.vii.1976 (1♀); St. Andrew, Kingstown, Botanical Garden, 1-3.x.1991 (1♀). TRINIDAD, St. Patrick, Coora, 14.viii.1976 (1♀).
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 42-43, DOI: 10.11646/zootaxa.5278.1.2, http://zenodo.org/record/7894979