Galeopsomyia melasoma 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 : 381-382

Galeopsomyia melasoma Hansson sp.nov.

( Figs 494, 495 , 834 )

Diagnosis (female). Antenna yellowish-brown with a solid clava ( Fig. 834 ); genal carina present; mesoscutellum ( Fig. 494 ) with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate, submedian grooves ±straight and parallel, indistinct in anterior one-third; propodeum ( Fig. 494 ) with strong reticulation, callus with six setae; gaster ( Fig. 494 ) 1.9× as long as wide, tergites with strong reticulation; body black non-metallic ( Figs 494, 495 ). Female holotype: length of body 1.7mm (paratype 1.9mm).

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

Antenna with solid clava. Face below level of toruli with weak reticulation, clypeus smooth, frons with strong reticulation, antennal scrobes with weak reticulation; with genal carina. Vertex with strong reticulation outside ocellar triangle, with transverse carinae inside ocellar triangle.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe without median groove, with nine scattered adnotaular setae. Mesoscutellum with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate; submedian grooves ±straight and parallel, indistinct in anterior one-third; with 11 setae scattered over lateral parts. Dorsellum with weak sculpture, with median carina. Propodeum with a strong median carina; with strong reticulation; callus with six setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation. Fore wing with four setae on dorsal surface of submarginal vein; speculum closed; costal setal row unbroken.

Petiole transverse with strong sculpture on dorsal part. Gaster ovate; tergites with strong reticulation.

Relative measurements: head length, dorsal view 20; head length, frontal view 34.5; POL 9.5; OOL 6; lateral ocellus diameter 3.5; head width 44; mouth width nm; malar space 13.5; eye length 17; scape length 16; scape width 3.5; pedicel+flagellum length 36; pedicel length 5.5; pedicel width, dorsal view 3.5; F1 length 4.5; F1 width 3.5; F2 length 6; F2 width 4; F3 length 5.5; F3 width 4; clava length 13.5; clava width 5; C3 length 5; spicule length 1; mesosoma length 52; mesosoma width 39; midlobe of mesoscutum length 15; mesoscutellum length 20; mesoscutellum width 21; median part of mesoscutellum width (measured medially) 8; median part of mesoscutellum, width in anterior part 7.5; median part of mesoscutellum, width in posterior part 7.5; lateral part of mesoscutellum, width (measured medially) 5.5; dorsellum length 2.5; propodeum length 7.5; costal cell length 29; costal cell width (measured at widest part) 2.5; marginal vein length 25; stigmal vein length 9; gaster length 59; gaster width 31; Gt2 length (measured medially) 8; Gt4 length (measured medially) 6; Gt7 length (measured medially) 6.5; Gt7 width (measured at base) 10; longest cercal seta length 11; shortest cercal seta length 5.

Male. Unknown.

Hosts. Reared from a blister-like leaf gall induced by an unidentified Cecidomyiidae on Roupala sp. ( Proteaceae ).

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Alajuela, Reserva Forestal Grecia , 1500m, 18.iii.1992, from Roupala leaf gall, P. Hanson ( NHMUK) . Paratype: 1♀ with same label data as holotype ( MZLU) .

Etymology. From the Greek melas = black, and soma = body, referring to colour of body.

Figures

Figs 492–495. Galeopsomyia medrosa, holotype ♀ – (492) habitus dorsal view; (493) habitus lateral view. Galeopsomyia melasoma, holotype ♀ – (494) habitus dorsal view; (495) habitus lateral view.

Figs 834–840. Head incl. antennae, lateral view ♀ – (834) Galeopsomyia melasoma; (835) G. mora; (836) G. nana; (837) G. marbis; (838) G. methea; (839) G. milagra; (840) G. miliaris.