Galeopsomyia osaensis Hansson, 2023

Hansson, Christer & Hanson, Paul E., 2023, EULOPHIDAE OF COSTA RICA (HYMENOPTERA: CHALCIDOIDEA), 5: The genus Galeopsomyia Girault, Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) 3 (1), pp. 1-743 : 427-429

Galeopsomyia osaensis Hansson sp.nov.

( Figs 24 , 36 , 560, 561 , 851 )

Diagnosis (female). Antenna with solid clava ( Fig. 851 ); genal carina present; mesoscutellum ( Fig. 560 ) with strong reticulation on median part but shiny, with a median groove in anterior three-quarters, lateral parts with strong reticulation, meshes elongate, submedian grooves distinct, straight and diverging towards posterior part; dorsellum with median carina; propodeum ( Fig. 560 ) with strong reticulation, callus with three setae; gaster ( Fig. 560 ) 1.8× as long as wide, medio-basal Gt1 with a sharp edge shaped like an inverted U ( Fig. 24 ), tergites with strong reticulation.

Female holotype: length of body 1.4mm (paratypes 1.4–1.8mm).

Scape yellowish-brown, pedicel pale brown, flagellum dark brown. Head with frons and vertex metallic bluish-green, antennal scrobes black, clypeus dark brown. Thoracic dorsum metallic bluish-green. Legs with fore and mid coxae dark brown, hind coxa metallic bluish-green; trochanters yellowish-brown; femora dark brown with apex yellowish-brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 brown. Petiole black. Gaster with Gt1 metallic bluish-green in anterior half, posterior half and remaining tergites golden-purple; gonoplac black.

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

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with a median groove in posterior two-thirds, with ten scattered adnotaular setae. Mesoscutellum with strong reticulation on median part but shiny, with a median groove in anterior three-quarters, lateral parts with strong reticulation, meshes elongate; submedian grooves distinct, straight and diverging towards posterior part; with six setae scattered over lateral parts. Dorsellum with weak sculpture and shiny, with median carina. Propodeum with a strong median carina that expands posteriorly and anteriorly; with strong reticulation; callus with three setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation. Fore wing with 3&4 setae on dorsal surface of submarginal vein; speculum closed; costal setal row broken.

Petiole very short, just a narrow band. Gaster ovate-elongate; medio-basal Gt1 with a sharp edge shaped like an inverted U; tergites with strong reticulation.

Relative measurements: head length, dorsal view 20; head length, frontal view 30; POL 8.2; OOL 4.7; lateral ocellus diameter 4; head width 41; mouth width 13; malar space 9.5; eye length 18; scape length 13; scape width 3.5; pedicel+flagellum length 36; pedicel length 5.5; pedicel width, dorsal view 3.5; F1 length 5.5; F1 width 4; F2 length 4.5; F2 width 4; F3 length 5; F3 width 4; clava length 13.5; clava width 5; C3 length 5; spicule length 1.5; mesosoma length 48; mesosoma width 35; midlobe of mesoscutum length 20; mesoscutellum length 18.5; mesoscutellum width 18.5; median part of mesoscutellum width (measured medially) 8; median part of mesoscutellum, width in anterior part 7; median part of mesoscutellum, width in posterior part 9; lateral part of mesoscutellum, width (measured medially) 4; dorsellum length 2.5; propodeum length 8; costal cell length 26; costal cell width (measured at widest part) 2; marginal vein length 21; stigmal vein length 9; gaster length 58; gaster width 33; Gt2 length (measured medially) 8; Gt4 length (measured medially) 10; Gt7 length (measured medially) 6; Gt7 width (measured at base) 11; longest cercal seta length nm; shortest cercal seta length nm.

Male. Unknown.

Hosts. Reared from leaf galls induced by an unidentified triozid ( Hemiptera : Triozidae ) on Pseudolmedia spurea ( Moraceae ). It is possible that the Galeopsomyia specimens were inquilines (J.A. Azofeifa, personal communication).

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Puntarenas, Golfito , Estación Agujas, LS 276750_ 526550, 300m. 9.ix.2001, J. Azofeifa ( NHMUK) . Paratypes (44♀, CNC, MZLU, MZUCR, NHMUK): 7♀ with same label data as holotype ; 37♀ COSTA RICA, Puntarenas, Golfito, Estación Agujas, LS 276750_ 526550, 300m, 20.vi.2001, from leaf galls on Pseudolmedia spurea, J. Azofeifa .

Etymology. Named after collecting area, Osa Peninsula where Estación Agujas is located.

Figures

Figs 23–28. Galeopsomyia spp., ♀, first gastral tergite (Gt1) dorsal view – (23) G. epidius; (24) G. osaensis; (25) G. fausta; (26) G. blakeae; (27) G. illydris; (28) G.devania.

Figs 35–43. Galeopsomyia spp., ♀. 35–36. Base of fore wing with ventral setal row in costal cell – (35) G. illydris, row unbroken; (36) G. osaensis, row broken. 37–38. Antenna lateral view – (37) G. noyesi, solid antennal clava; (38) G. illydris, with distinct constriction between C1 and C2. 39–40. Apex of gaster lateral view – (39) G. illydris; (40) G. flora. 41–43. First gastral tergite (Gt1) dorsal view – (41) G. saga, arrow pointing at medio-basal carina; (42) G. pagana, arrow pointing at medio-basal sharp edge; (43) G. druparum, arrows pointing at ovate flat areas.

Figs 560–563. Galeopsomyia osaensis, holotype ♀ – (560) habitus dorsal view; (561) habitus lateral view. Galeopsomyia osmia, holotype ♀ – (562) habitus dorsal view; (563) habitus lateral view.

Figs 850–855. Head incl. antennae, lateral view ♀ – (850) Galeopsomyia myrsineae; (851) G. osaensis; (852) G. nishidai; (853) G. noblitis; (854) G. opala; (855) G. opima.