Galeopsomyia myrsineae 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 : 402-403

Galeopsomyia myrsineae Hansson sp.nov.

( Figs 18 , 524, 525 , 850 , 987 )

Diagnosis (female). Flagellum short, clava very distinct without distinct constrictions between clavomeres ( Fig. 850 ); genal carina absent; mesoscutellum ( Fig. 524 ) with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate; with a strong and complete median groove, submedian grooves distinct, slightly curved and diverging towards posterior part; dorsellum with median carina; propodeum ( Fig. 524 ) with an elongate cup in medio-anterior part that continues as a narrow carina backwards, with strong reticulation lateral to median carina, callus with seven setae; both sexes: fore coxa with a carina along anterior margin ( Fig. 18 ) and hind coxa with a carina along posterior margin; gaster ( Fig. 524 ) 2.1× as long as wide, medio-basal Gt 1 with a sharp edge shaped like an inverted U (as in Fig. 24 ), tergites with weak reticulation.

Female holotype: length of body 2.3mm (paratypes 1.7–2.8mm).

Scape yellowish-brown with apico-dorsal part brown, pedicel pale brown, flagellum dark brown. Head with frons, including scrobes, and vertex golden-green, clypeus dark brown. Thoracic dorsum metallic bluish-green, propodeum with medio-anterior half golden. Legs with fore and hind coxae metallic bluish-green, mid coxa black; trochanters yellowish-brown; femora with basal half dark brown and apical half yellowish-brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 brown. Petiole black. Gaster with Gt 1 metallic bluish-green, Gt 2-4 black with metallic blue tinges, Gt5-6 golden, Gt 7 black; gonoplac black.

Antenna with solid clava. Face below level of toruli with strong reticulation, clypeus smooth, frons rugose, antennal scrobes with weak reticulation; without 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, and with 16 scattered adnotaular setae. Mesoscutellum with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate; with a strong and complete median groove; submedian grooves distinct, slightly curved and diverging towards posterior part; with nine setae scattered over lateral parts. Dorsellum smooth and shiny, with median carina. Propodeum with a narrow strong median carina that expands anteriorly and posteriorly; with strong reticulation; callus with seven setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation; fore coxa with a carina along anterior margin and hind coxa with a carina along posterior margin. Fore wing with 5&7 setae on dorsal surface of submarginal vein; speculum open below (apical seta absent); costal setal row unbroken.

Petiole transverse. Gaster elongate; medio-basal Gt 1 with a sharp edge dorsally; tergites with weak reticulation, shiny.

Relative measurements: head length, dorsal view 25; head length, frontal view 39; POL 10.7; OOL 5.2; lateral ocellus diameter 4; head width 48; mouth width 20; malar space 14.5; eye length 21; scape length 21; scape width 4.5; pedicel+flagellum length 47; pedicel length 8; pedicel width, dorsal view 4; F1 length 8; F1 width 5; F2 length 7; F2 width 5; F3 length 7; F3 width 5.5; clava length 14.5; clava width 7; C3 length 4.5; spicule length 1; mesosoma length 71; mesosoma width 47; midlobe of mesoscutum length 30; mesoscutellum length 26; mesoscutellum width 23; median part of mesoscutellum width (measured medially) 9.5; median part of mesoscutellum, width in anterior part 8.5; median part of mesoscutellum, width in posterior part 12; lateral part of mesoscutellum, width (measured medially) 4.5; dorsellum length 4; propodeum length 11; costal cell length 41; costal cell width (measured at widest part) 3; marginal vein length 35; stigmal vein length 13; gaster length 105; gaster width 50; Gt 2 length (measured medially) 11; Gt 4 length (measured medially) 22; Gt 7 length (measured medially) 12; Gt 7 width (measured at base) 16; longest cercal seta length 12; shortest cercal seta length 6.

Male. Length of body of body 1.6–2.0mm.

Antenna ( Fig. 987 ) with scape widest in the middle; plaque dark brown, situated in apical half; dorso-basal whorls of long setae present on F1–F4 and C1, and a ventro-basal whorl on C1. Gaster elongate and narrowing off in posterior part of Gt

1

. Otherwise as in female.

Relative measurements: head length, dorsal view 19; head length, frontal view 31; head width 40; mouth width 15; malar space 12; eye length 17.5; scape length 15.5; scape width 5; plaque length 7; pedicel length 6.5; pedicel+flagellum length 77; F1 length 5.5; F1 width 4.5; F2 length 9.5; F2 width 4.5; F3 length 11.5; F3 width 4; F4 length 12; F4 width 4; clava length 31; clava width 3.5; mesosoma length 60; mesosoma width 37; gaster length 85; gaster width 25; longest subbasal seta on F1, length 32.

Hosts. Reared from seeds of Myrsine juergensenii and Myrsine sp. ( Myrsinaceae ). The latter (from Zurquí de Moravia) is probably M. coriacea and the seeds of this species harbor an undescribed, phytophagous species of Megastigmus ( Megastigmidae ) (P. Hanson, unpublished).

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Puntarenas, San Vito, Las Cruces, 8º47’N, 82º58’W, 1000-1300m, 7-19.ii.2007, C. Hansson ( MZLU) . Paratypes (28♀ 2♂, CNC, MZLU, MZUCR, NHMUK) : 1♀ COSTA RICA, Heredia, 6km ENE Vara Blanca , 10°11’N, 84°07’W, 2000m, iii.2002, INBio, OET, ALAS ; 1♀ from same locality as previous but collected iv.2002 ; 4♀ 1♂ COSTA RICA, Heredia, San Rafael de Vara Blanca , ii.2013, from Myrsine juergensenii fruit/seed ; 5♀ COSTA RICA, San José, Zurqui de Moravia , 1600m, x.2001, from Myrsine seeds, P. Hanson; following from same locality as previous but collected vi.1995 (2♀), xii.1995 (9♀ 1♂), i.1996 (4♀) ; 1♀ COSTA RICA, San José, San Gerardo de Dota , 9º34’N, 83º43’W, 18-20.ii.2010, J.S. Noyes ; 1♀ COSTA RICA, San José, 26km N San Isidro , 9º30’N, 83º43’W, 2100m, ii-v.1992, P. Hanson .

Etymology. Name referring to the host plant, Myrsine , from which this species was reared.

Figures

Figs 15–22. Galeopsomyia spp., ♀. 15–17. Head lateral view – (15) G. seminarum; (16) G. noyesi (arrow pointing at short genal carina); (17) G. graciliclava (arrow pointing at long genal carina). 18–19. Fore coxa lateral view – (18) G. myrsineae (arrow pointing at carina along anterior margin); (19) G. alas (arrow pointing at carina along posterior margin). 20–21. Hind coxa lateral view – (20) G. noyesi; (21) G. aliosa (arrow pointing at carina along posterior margin). 22. G. carinifer, dorsellum (arrow pointing at median carina).

Figs 524–527. Galeopsomyia myrsineae, holotype ♀ – (524) habitus dorsal view; (525) habitus lateral view. Galeopsomyia nana, holotype ♀ – (526) habitus dorsal view; (527) 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.

Figs 986–988. Head incl. antennae/body, lateral view, paratype ♂. (986) Galeopsomyia myrciae; (987) G. myrsineae; (988) G. nana.

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.