Galeopsomyia ambigua 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 : 225-226

Galeopsomyia ambigua Hansson sp.nov.

( Figs 268, 269 , 747 )

Diagnosis (female). Antennal clava with a weak constriction between C1 and C2 ( Fig. 747 ); mesoscutum ( Fig. 268 ) with strong reticulation, meshes elongate, and with a weak median groove in posterior one-third; mesoscutellum ( Fig. 268 ) with submedian grooves distinct, curved and diverging towards posterior part, with a ±complete median groove; dorsellum with median carina; propodeum ( Fig. 268 ) with strong irregular carinae medially, callus with four setae; petiole very short, just a narrow band; gaster ( Fig. 268 ) 2.6× as long as wide, medio-basal Gt 1 with short longitudinal carinae laterally, tergites with strong reticulation.

Female holotype: length of body 2.3mm.

Scape dark brown with base yellowish-brown, pedicel and flagellum dark brown. Face below level of toruli golden-green, clypeus dark brown, frons metallic bluish-green, antennal scrobes black; vertex black with metallic green tinges. Mesoscutum dark brown with metallic blue and green tinges, mesoscutellum and propodeum golden-green. Legs with fore and mid coxae dark brown, hind coxa dark brown with metallic tinges; trochanters dark brown; femora dark brown with apex yellowish-brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 pale brown. Petiole black. Gaster with Gt 1 golden-green, Gt 2-4 golden-purple, Gt 5-6 golden-green, Gt 7 dark brown with golden-green tinges; gonoplac black.

Antenna with a weak constriction between C1 and C2. Face below level of toruli with weak reticulation, clypeus smooth, frons rugose, antennal scrobes with weak reticulation; with a weak genal carina. Vertex with strong reticulation outside ocellar triangle, rugose inside ocellar triangle.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with a median groove in posterior one-third, with nine scattered adnotaular setae. Mesoscutellum with strong reticulation on median part and with a weak but ±complete median groove, lateral parts with strong reticulation, meshes elongate; submedian grooves distinct, curved and diverging towards posterior part; with four setae scattered over lateral parts. Dorsellum with weak reticulation, with median carina. Propodeum with a few strong irregular carinae on median part, laterally with strong reticulation; callus with four setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation. Fore wing with five setae on dorsal surface of submarginal vein; speculum closed; costal setal row unbroken.

Petiole very short, just a narrow band. Gaster elongate; medio-basal Gt 1 with short longitudinal carinae laterally; tergites with strong reticulation.

Relative measurements: head length, dorsal view 20; head length, frontal view 35; POL 10; OOL 6; lateral ocellus diameter 3.5; head width 43; mouth width 16; malar space 12; eye length 19; scape length 16.5; scape width 4.5; pedicel+flagellum length 53; pedicel length 7; pedicel width, dorsal view 3.5; F1 length 6.5; F1 width 4.5; F2 length 8; F2 width 4.5; F3 length 8; F3 width 4.5; clava length 19.5; clava width 5; C3 length 6.5; spicule length 1.5; mesosoma length 59; mesosoma width 42; midlobe of mesoscutum length 25; mesoscutellum length 22; mesoscutellum width 20; median part of mesoscutellum width (measured medially) 8.5; median part of mesoscutellum, width in anterior part 8.5; median part of mesoscutellum, width in posterior part 10.5; lateral part of mesoscutellum, width (measured medially) 4.5; dorsellum length 4; propodeum length 10; costal cell length 32; costal cell width (measured at widest part) 2.5; marginal vein length 32; stigmal vein length 10; gaster length 88; gaster width 34; Gt 2 length (measured medially) 12.5; Gt 4 length (measured medially) 12.5; Gt 7 length (measured medially) 15; Gt 7 width (measured at base) 12; longest cercal seta length 13; shortest cercal seta length 5.

Male. Unknown.

Hosts. Reared from a stem gall (stem swelling) induced by Procecidochares sp. ( Diptera : Tephritidae ) on Ageratina sp. ( Asteraceae ).

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, San José, San Gerardo de Dota, 9º34’N, 83º43’W, 6.viii.1995, A. Norrbom, ex Procecidochares on Ageratina (NHMUK) .

Figures

Figs 268–271. Galeopsomyia ambigua, holotype ♀ – (268) habitus dorsal view; (269) habitus lateral view. Galeopsomyia amphis, holotype ♀ – (270) habitus dorsal view; (271) habitus lateral view.

Figs 742–750. Head incl. antennae, lateral view ♀ – (742) Galeopsomyia alambra; (743) G. anysia; (744) G. arada; (745) G. artis; (746) G. aureoviridis; (747) G. ambigua; (748) G. avis; (749) G. bariolis; (750) G. beltanis.