Galeopsomyia nigricans Hansson, 2023

Hansson, Christer & Hanson, Paul E., 2023, HYMENOPTERA: CHALCIDOIDEA), 5 The genus Galeopsomyia Girault by Christer Hansson * & Paul E. Hanson **, Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) 3 (1), pp. 1-743 : 412-413

Galeopsomyia nigricans Hansson sp.nov.

( Figs 538, 539 , 856 )

Diagnosis (female). Antennal clava with distinct constriction between C1 and C2 ( Fig. 856 ); genal carina present; mesoscutellum ( Fig. 538 ) with weak reticulation on median part and shiny, lateral parts with strong reticulation, meshes elongate, submedian grooves distinct, straight and parallel; dorsellum hidden by overhanging posterior part of mesoscutellum in dorsal view, with median carina; propodeum ( Fig. 538 ) with strong irregular carinae mixed with strong reticulation, callus with two setae; petiole transverse with strong sculpture on dorsal part; gaster ( Fig. 538 ) 1.8× as long as wide, medio-basal Gt1 with short longitudinal carinae, tergites with strong reticulation, apex of gonoplac blunt ( Fig. 539 ); body black non-metallic ( Figs 538, 539 ).

Female holotype: length of body 1.8mm (paratype 2.0mm).

Scape yellowish-brown, pedicel pale brown, flagellum dark brown. Head, mesosoma and metasoma black. Legs with fore and hind coxae black, mid coxa dark brown; trochanters yellowish-brown; femora pale brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 pale brown.

Antenna with distinct constriction between C1 and C2. Face below level of toruli with weak reticulation, clypeus smooth, frons with strong reticulation, antennal scrobes with weaker reticulation; with genal carina. Vertex with strong reticulation; with a carina between posterior ocelli in posterior part.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe, midlobe with parts close to notauli rugose; midlobe without a median groove, with 16 scattered setae on rugose parts. Mesoscutellum with weak reticulation on median part and shiny, lateral parts with strong reticulation, meshes elongate; submedian grooves distinct, straight and parallel; with 12 setae scattered over lateral parts. Dorsellum with strong reticulation, hidden by overhanging posterior part of mesoscutellum in dorsal view, with median carina. Propodeum with a strong median carina, expanding both anteriorly and posteriorly; with strong irregular carinae and strong reticulation; callus with two setae. Coxae with strong reticulation, hind coxa especially so. Fore wing with 4&5 setae on dorsal surface of submarginal vein; speculum closed; costal setal row unbroken.

Petiole transverse with strong sculpture on dorsal part. Gaster ovate-elongate; medio-basal Gt 1 with short longitudinal carinae; tergites with strong reticulation.

Relative measurements: head length, dorsal view 23; head length, frontal view 39; POL 10; OOL 4.5; lateral ocellus diameter 4.5; head width 48; mouth width 13.5; malar space 13; eye length 23; scape length 17; scape width 4; pedicel+flagellum length 52; pedicel length 7; pedicel width, dorsal view 4; F1 length 7.5; F1 width 4; F2 length 8; F2 width 4; F3 length 7.5; F3 width 4; clava length 18.5; clava width 4.5; C3 length 7.5; spicule length 1.5; mesosoma length 60; mesosoma width 45; midlobe of mesoscutum length 21; mesoscutellum length 23.5; mesoscutellum width 21; median part of mesoscutellum width (measured medially) 6; median part of mesoscutellum, width in anterior part 6.5; median part of mesoscutellum, width in posterior part 6; lateral part of mesoscutellum, width (measured medially) 5; dorsellum length 3; propodeum length 11; costal cell length 31; costal cell width (measured at widest part) 2; marginal vein length 26; stigmal vein length 9; gaster length 70; gaster width 40; Gt 2 length (measured medially) 10; Gt 4 length (measured medially) 12; Gt 7 length (measured medially) 7; Gt

7

width (measured at base) 14; longest cercal seta length; shortest cercal seta length.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Limón, Parque Nacional Braulio Carrillo, Estación Quebrada Gonzalez , 10°09’N, 83°57’W, 450m, 15.ii.2003, J.S. Noyes ( NHMUK) . Paratype: 1♀ COSTA RICA, Heredia, 16km SSE La Virgen , 10°16’N, 84°06’W, 1050-1150m, 11-20.ii.2001, 11/TN/ALL, INBio, OET,ALAS intersect ( MZLU) .

Etymology. From the Latin nigricans = blackish, referring to colour of body.

Figures

Figs 536–539. Galeopsomyia nicoyae, holotype ♀ – (536) habitus dorsal view; (537) habitus lateral view. Galeopsomyia nigricans, holotype ♀ – (538) habitus dorsal view; (539) habitus lateral view.

Figs 856–863. Head incl. antennae, lateral view ♀ – (856) Galeopsomyia nigricans; (857) G. orillia; (858) G. palenta; (859) G. pagana; (860) G. pardis; (861) G. pava; (862) G. pensada; (863) G. preta.