Galeopsomyia philodendrae 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 : 442-444

Galeopsomyia philodendrae Hansson sp.nov.

( Figs 5 , 582, 583 , 919 , 1095)

Diagnosis (female). Antennal flagellum short and clavate (Fig. 1095); genal carina present; mesoscutellum ( Fig. 582 ) completely flat, in same plane as dorsellum and propodeum, with very weak reticulation on median part, lateral parts with slightly stronger reticulation, meshes elongate, submedian grooves distinct, straight and diverging towards posterior part; dorsellum with weak median carina; propodeum ( Fig. 582 ) with strong reticulation, callus with 3–4 setae; gaster ( Fig. 582 ) dorsally flattened, medio-basal Gt1 with a blunt edge shaped like an inverted U (as in Fig. 24 ), tergites with engraved and strong reticulation.

Female holotype: length of body 2.3mm (paratypes 1.8–2.6mm).

Scape yellowish-brown with apico-dorsal part pale brown, pedicel brown, flagellum dark brown. Head with frons and vertex golden-green, clypeus dark brown. Thoracic dorsum golden-green. Legs with coxae golden-green; 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 infuscate. Petiole black. Gaster with Gt1 metallic bluish-green in anterior two-thirds and metallic purple in posterior one-third, remaining tergites metallic purple; gonoplac black.

Antenna with constriction between C1 and C2. Frons with strong reticulation, antennal scrobes with weak reticulation and clypeus smooth; with genal carina. Vertex with strong reticulation outside ocellar triangle, with wrinkled sculpture inside ocellar triangle. Occipital margin with an edge behind ocellar triangle.

Mesoscutum slightly flattened, with strong reticulation, meshes isodiametric on sidelobes, slightly elongate on midlobe; midlobe with a complete median groove, with eight scattered adnotaular setae. Mesoscutellum flat, with very weak reticulation on median part, lateral parts with slightly stronger reticulation, meshes elongate; submedian grooves distinct, straight and diverging towards posterior part; with six setae scattered over lateral parts. Dorsellum flat and in same plane as mesoscutellum, with weak sculpture, median carina weak. Propodeum with a strong median carina that expands both anteriorly and posteriorly; with strong reticulation; callus with 3–4 setae. Fore and mid coxae with weak reticulation, hind coxa with strong reticulation. Fore wing with four setae on dorsal surface of submarginal vein; speculum closed; costal setal row broken.

Petiole very short, just a narrow band. Gaster elongate; medio-basal Gt 1 with a blunt edge shaped like an inverted U; tergites with engraved and strong reticulation.

Relative measurements: head length, dorsal view 23; head length, frontal view 36; POL 9.5; OOL 5; lateral ocellus diameter 5.5; head width 50; mouth width 15.5; malar space 12; eye length 22.5; scape length 16; scape width 4.7; pedicel+flagellum length 45; pedicel length 7; pedicel width, dorsal view 4; F1 length 6.5; F1 width 6; F2 length 7; F2 width 6; F3 length 7.5; F3 width 6; clava length 15.5; clava width 7; C3 length 5; spicule length 1; mesosoma length 65; mesosoma width 45; midlobe of mesoscutum length 24; mesoscutellum length 21.5; mesoscutellum width 23; median part of mesoscutellum width (measured medially) 10.5; median part of mesoscutellum, width in anterior part 9; median part of mesoscutellum, width in posterior part 12; lateral part of mesoscutellum, width (measured medially) 5; dorsellum length 3; propodeum length 11; costal cell length 37; costal cell width (measured at widest part) 2; marginal vein length 27; stigmal vein length 10; gaster length 103; gaster width 44.5; Gt 2 length (measured medially) 9; Gt 4 length (measured medially) 17; Gt 7 length (measured medially) 14.5; Gt 7 width (measured at base) 13.5; longest cercal seta length 13; shortest cercal seta length 5.

Male. Unknown.

Hosts. Reared from leaf galls induced by Monitoriella elongata Hedqvist ( Hymenoptera : Braconidae ) on Philodendron radiatum ( Araceae ). ( Fig. 5 ). Evidence from gall dissections suggests that the larva of G. philodendrae feeds on the braconid gall-inducer, as opposed to one of the other hymenopterans ( Eurytomidae Pirenidae , Pteromalidae ) present in these galls ( Infante et al. 1995).

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Limón, 4km NE Bataam , x-xi.1999, P. Hanson ( NHMUK) . Paratypes (15♀, CNC, MZLU, MZUCR, NHMUK) : 11♀ COSTA RICA, Heredia, OTS La Selva, iii-iv.2002, from leaf gall Philodendron radiatum, P. Hanson ; following from same locality and host as previous but collected 5.iii.1994 (1♀), i.1998 (1♀, this also with information on gallmaker, Monitoriella sp. ) ; 1♀ COSTA RICA, Limón, 13km W, 3km N Guápiles, 9.xii.1990, from Philodendron radiatum leaf gall, Paul Hanson ; 1♀ from same locality as previous but collected 20.xi.1991 .

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

Figures

Figs. 1–7. A selection of galls from which Galeopsomyia specimens have been reared – (1) Cecropia obtusifolia (Urticaceae) leaf gall, host of G. cecropiae, (2) Coccoloba uvifera (Polygonaceae) leaf gall, host of G. coccolobae, (3) Philodendron radiatum (Araceae) leaf gall, host of G. philodendrae, (4) Inga vera (Fabaceae), fuzzy spherical gall, host of G. ingae, (5) Inga vera (Fabaceae), capsule-shaped gall, host of G. ingae, (6) Piper sinugaudens (Piperaceae), stem gall, host of G. piperae, (7) Myrcia splendens (Myrtaceae) leaf gall, host of G. myrciae. Fig. 6 photo P. Hanson, remaining photos K. Nishida.

Figs 580–583. Galeopsomyia perla, holotype ♀ – (580) habitus dorsal view; (581) habitus lateral view. Galeopsomyia philodendrae, holotype ♀ – (582) habitus dorsal view; (583) habitus lateral view.

Figs 915–923. Mesoscutellum dorsal view, holotype ♀ – (915) Galeopsomyia nebulosa; (916) G. chrysops; (917) G. daleskeyae; (918) G. ajax; (919) G. philodendrae; (920) G. maculifer; (921) G. aramis; (922) G. hiata; (923) G. palotis.

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.