Galeopsomyia myrciae 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 : 400-401

Galeopsomyia myrciae Hansson sp.nov.

( Figs 9 , 522, 523 , 844 , 986 )

Diagnosis (female). Antennal clava with a distinct constriction between C1 and C2 ( Fig. 844 ); genal carina present; mesoscutellum ( Fig. 522 ) with strong reticulation on median part and with a weak median groove, lateral parts with strong reticulation, meshes elongate, submedian grooves distinct, ±straight and parallel, subdivided by transverse carinae; dorsellum with median carina; propodeum ( Fig. 522 ) with strong reticulation, callus with six setae; petiole very short, just a narrow band; gaster ( Fig. 522 ) 2.7× as long as wide, medio-basal Gt1 with a blunt edge shaped like an inverted U (as in Fig. 24 ), tergites with strong reticulation.

Female holotype: length of body 2.6mm (paratypes 2.0– 2.9mm).

Scape yellowish-brown, pedicel and flagellum brown. Face below level of toruli golden-green, clypeus dark brown, frons metallic bluish-green, antennal scrobes black; vertex metallic bluish-green. Mesoscutum and mesoscutellum golden-green, propodeum golden-red. Legs with fore and hind coxae golden-green, mid coxa dark brown; trochanters yellowish-brown; fore and mid femora yellowish-brown, hind femur with basal half dark brown and apical half yellowish-brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 pale brown. Petiole black. Gaster with Gt1 golden-green, Gt2 metallic bluish-green, Gt3-6 golden-purple medially and metallic bluish-green laterally, Gt7 black with metallic tinges; gonoplac black.

Antenna with a distinct constriction between C1 and C2. Face below level of toruli with weak 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; with a carina between posterior ocelli.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe, midlobe rugose close to notauli; midlobe with a complete median groove, with 12 scattered adnotaular setae. Mesoscutellum with strong reticulation on median part and with a weak median groove, lateral parts with strong reticulation, meshes elongate; submedian grooves distinct, ±straight and parallel subdivided by transverse carinae; with 12 setae scattered over lateral parts. Dorsellum with strong reticulation, with median carina. Propodeum with strong reticulation; callus with six setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation. Fore wing with six 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 a blunt edge shaped like an inverted U; tergites with strong reticulation.

Relative measurements: head length, dorsal view 26.5; head length, frontal view 42; POL 10; OOL 6.5; lateral ocellus diameter 6; head width 58; mouth width 17.5; malar space 13.5; eye length 26; scape length 20; scape width 5; pedicel+flagellum length 60; pedicel length 7.5; pedicel width, dorsal view 4.5; F1 length 10; F1 width 5; F2 length 10; F2 width 5.5; F3 length 10; F3 width 5.5; clava length 22; clava width 6; C3 length 7; spicule length 2; mesosoma length 73; mesosoma width 52; midlobe of mesoscutum length 26; mesoscutellum length 30; mesoscutellum width 25; median part of mesoscutellum width (measured medially) 10; median part of mesoscutellum, width in anterior part11; median part of mesoscutellum, width in posterior part 10; lateral part of mesoscutellum, width (measured medially) 5.5; dorsellum length 5; propodeum length 11; costal cell length 38; costal cell width (measured at widest part) 2.5; marginal vein length 40; stigmal vein length 11.5; gaster length 115; gaster width 43; Gt 2 length (measured medially) 8.5; Gt 4 length (measured medially) 15; Gt 7 length (measured medially) 18; Gt 7 width (measured at base) 18; longest cercal seta length 19; shortest cercal seta length 7.

Male. Length of body 1.7–2.0mm.

Antenna ( Fig. 986 ) with scape widest just above the middle; plaque dark brown and situated in apical half, but distinctly behind apex; dorso-basal whorls of long setae present on F1–F4, with a ventro-basal whorl of long setae on C1. Gaster long ovate. Otherwise as in female.

Relative measurements: head length, dorsal view 24.5; head length, frontal view 39; head width 54; mouth width 20; malar space 15; eye length 25; scape length 20; scape width 7; plaque length 6; pedicel length 6; pedicel+flagellum length 92; F1 length 7; F1 width 6; F2 length 10.5; F2 width 6; F3 length 14; F3 width 5.5; F4 length 15; F4 width 4.5; clava length 36; clava width 4.5; mesosoma length 71; mesosoma width 48; gaster length 71; gaster width 34; longest subbasal seta on F1, length 47.

Hosts. Reared from leaf galls possibly induced by a Eurytomidae (though this requires confirmation) on Myrcia splendens ( Myrtaceae ). The gall is large (up to 2 cm in diameter) and spherical, sometimes transforming nearly the entire leaf into a gall; the interior consists numerous fibers in which are embedded several enclosed, whitish chambers, like seeds in a spongy matrix (P. Hanson, unpublished) ( Fig. 9 ).

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, San José, Salitral de Santa Ana , 27.ii.1991, from Myrcia spongy leaf gall, P. Hanson ( NHMUK) . Paratypes (2♀ 1♂, MZLU, NHMUK) : 1♀ 1♂ with same label data as holotype ; 1♀ COSTA RICA, San José, Jerico, Desamparados , 1650m, v.1992, from gall on Myrcia splendens ”.

Etymology. Named after the host plant of the gall from which this species was reared.

Figures

Fig. 9. Costa Rica, showing the collecting localities from which significant Malaise trap, yel- low pan trap and sweep-net samples have been collected and processed. These are: 1. Santa Rosa; 2. Cerro el Hacha; 3. Est. Maritza; 4. Est. Pitilla; 5. Est. Cacao; 6. Finca San Gabriel; 7. Barra Honda; 8. Palo Verde; 9. Monteverde; 10. Jabillos; 11. Aguas Zarcas; 12. Finca La Selva; 13. Rio Frio; 14. 16 km W Guapiles; 15. Volcán Poas; 16. Vara Blanca; 17. El Tunel (Zurqui); 18. Zurqui de Moravia; 19. San Antonio de Escazu; 20. Cerros de Escazú; 21. Carara; 22. La Cangreja; 23. Cerro de la Muerte; 24. Villa Mills; 25. 26 km N San Isidro; 26. Corcovado; 27. Puerto Jiménez; 28. La Palma; 29. Rincón de Osa; 30. Golfo Dulce; 31. 5 km W. Peñas Blancas; 32. San Vito, Las Cruces Botanic Garden; 33. Las Alturas; 34. Bribri; 35. Hitoy-Cerere; 36. Cahuita; 37. Tortuguero; 38. P.N. Arenal; 39. Est. Biol. San Ramón; 40. Mirador Quetzales; 41. P.N. Tapantí; 42. Est. Biol. Cuericí; 43. Est. Altamira; 44. Los Patos; 45. Est. Agujas. Modified from Gauld (2000) and Noyes (2010). For a description of these localities see Hansson (2002, 2004).

Figs 520–523. Galeopsomyia munda, holotype ♀ – (520) habitus dorsal view; (521) habitus lateral view. Galeopsomyia myrciae, holotype ♀ – (522) habitus dorsal view; (523) habitus lateral view.

Figs 841–849. Head incl. antennae, lateral view ♀ – (841) Galeopsomyia miria; (842) G. montanis; (843) G. moradis; (844) G. myrciae; (845) G. navia; (846) G. neotropicalis; (847) G. nicoyae; (848) G. nitida; (849) G. octava.

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.