Petiolachertus castor, Hansson, 2024

Hansson, Christer, 2024, Two new genera of Eulophinae (Hymenoptera: Eulophidae), including four new species parasitoids on Gracillariidae (Lepidoptera) leaf miners in Costa Rica, Zootaxa 5447 (4), pp. 562-572 : 563-565

Petiolachertus castor sp. nov.

Figs 1–4 , 14–15 , 26

Diagnosis. Mesoscutellum with strong large-meshed reticulation throughout ( Fig. 2 ). Petiole with a pair of long and strong setae on lateral part of anterior one-third (holotype with seta on left side broken off, Fig. 3 ).

Description (female holotype). Length 1.9 mm. Mesoscutellum with strong reticulation throughout, with large meshes. Propodeum predominantly smooth and shiny, parts just lateral to median carina and posterior part with irregular sculpture; propodeal callus with seven setae. Fore wing with 6&7 setae on dorsal surface of submarginal vein. Petiole with very weak reticulation on dorsal surface; with a pair of long and strong setae on lateral part of anterior one-third,

Colour. Body black, Gt 3-7 dark brown. Antenna with scape and pedicel yellowish-brown, flagellum dark brown. Legs with fore and mid coxae dark brown, hind coxa black; trochanters yellowish-white to white; fore femur dark brown with apex pale brown, mid femur pale brown with base and apex yellowish-brown, hind femur black with basal one-third yellowish-brown; fore and mid tibiae yellowish-brown, hind tibia dark brown with base yellowish-brown; tarsi yellowish-brown. Wings hyaline with part below stigmal vein infuscate.

Relative measurements: head length, dorsal view 21; head length, frontal view 29; head width 40; POL 7; OOL 4; mouth width 10.5; malar space 7.5; eye length 21; lateral ocellus diameter 4; scape length 15; scape width 3.5; pedicel length 6; pedicel width, dorsal view 3.5; flagellum length 40; F1 length 6.5; F1 width 4; F2 length 6.5; F2 width 4.5; F3 length 6.5; F3 width 5; F4 length 5.5; F4 width 5; clava length 11.5; clava width 5.5; pronotum length 20; pronotum width 25; mesosoma length 63; mesosoma width 36; midlobe of mesoscutum length 14; midlobe of mesoscutum width along posterior margin 9.5; sidelobes of mesoscutum width along posterior margin 13.5; mesoscutellum length 20; mesoscutellum width 18; propodeum length 17; hind tibia length 35; hind tibial spur1 length 9; hind tibial spur2 length 5.5; hind tarsus length 30; hind basitarsus length 9; fore wing length 110; fore wing width 45; costal cell length 34; costal cell width 3; marginal vein length 35; postmarginal vein length 14; stigmal vein length 12; petiole length 18; petiole width 5; gaster length 61; gaster width 33.5.

Variation in female paratypes. Length 1.4–2.0 mm. Number of setae on dorsal surface of submarginal vein 5–7. Colour and structure as in holotype.

Male. Length 1.2–2.1 mm.Antenna with F1–F2 yellowish-brown, gaster entirely dark brown in some specimens, fore and mid coxae pale brown to dark brown, otherwise very similar to female.

Relative measurements: head length, dorsal view 16; head width 35; eye length 17; scape length 13; scape width 3; flagellum length 39; F1 length 6; F1 width 3; F2 length 5.5; F2 width 3.5; F3 length 5.5; F3 width 4; F4 length 5.5; F4 width 4; clava length 10; clava width 4; petiole length 18; petiole width 5; gaster length 41; gaster width 30.

Hosts. Reared from unidentified Lepidoptera leaf miners on unidentified Araceae and Lauraceae .

Distribution. Costa Rica.

Material. Holotype female: COSTA RICA, Puntarenas, San Vito, Las Cruces , 8º47’N, 82º58’W, 1000–1300m, 7–19.ii.2007, C. Hansson ( MZLU). Paratypes (32♀ 33♂, MZLU, MZUCR, NHMUK): 3♀ 3♂ with same data as holotype ; 1♀ from same locality as holotype but collected 19–29.ii.2008 ; 5♀ COSTA RICA, Puntarenas, Reserva Privada Karen Mogensen , 9º52′N, 85º03′W, 305m, 11–21.ii.2005, C. Hansson ; following from same locality as previous but collected 15.ii.2005 (2♀), 23–24.ii.2007 (4♀ 2♂), 11–12.ii.2018 (1♂) ; 1♀ COSTA RICA, Puntarenas, Golfito, Estación Agujas , LS 526550_276750, 250– 350m, 3–14.vii.1999, malaise trap, J. Azofeifa ; 1♀ COSTA RICA, Puntarenas, Estación Biológica San Miguel, 9º34’N, 85º08’W, 0–50m, 2.xii.1998, ex Lepidoptera leaf miner on Lauraceae, L.M. La Pierre ; 1♀ COSTA RICA, Alajuela, San Carlos, Reserva Forestal Arenal , Sendero Pilón , LN 269100_457900, 600m, 26.x–22.xi.1999, malaise trap, G. Carballo ; 1♀ 4♂ COSTA RICA, Cartago, Humo, El Copal , 9°47’N, 83°45’W, 1050–1250m, 29.ii–6.iii.2008, C. Hansson ; 1♀ COSTA RICA, Guanacaste, Parque Nacional Bosque Diriá , 14–15.ii.2011, J.S. Noyes ; 2♂ COSTA RICA, Guanacaste, Estación Pitilla, ACG, LN532600_380600, 22.i–4.ii.2001, R. Thomas, C. Moraga ; 1♀ 5♂ COSTA RICA, Heredia, Estación Biológica La Selva , 10º26’N, 84º01’W, 75m, 22.i–2.ii.1991, J.S. Noyes ; following from same locality as previous but collected 14.ix.1995 (1♀), x.1995 (1♀), i.1996 (1♀), 24–25.ii.2011 (1♂) ; 1♀ COSTA RICA: Heredia, La Virgen, 450–550m, 29.xi.2002, ex Lepidoptera leafminer on Araceae, K.Nishida ; 1♂ COSTA RICA, Heredia, Reserva Privada Selva Verde , 10°27’N, 84°04’W, 75m, 13.iii.2005, C. Hansson ; 2♀ 2♂ COSTA RICA: Heredia, Braulio Carrillo National Park , 25.iii.1990, J.S. Noyes ; 2♀ 3♂ COSTA RICA, Limón, 0.5km E Braulio Carrillo National Park, San José-Limón road, 400m, 9.ii.1991, J.S. Noyes ; 1♂ COSTA RICA, Limón, Parque Nacional Braulio Carrillo, Estación Quebrada Gonzalez , 10°09’N, 83°57’W, 450m, 25.ii.2005, J.S. Noyes ; 1♀ 1♂ COSTA RICA, Limón, Reserva Biológica Hitoy-Cerere , 9°40’N, 83°02’W, 100m, 14–18.i.1991, J.S. Noyes ; following from same locality as previous but collected 24–25.ii.2004 (1♂), 20–21.ii.2006 (♂), 24–26.ii.2008 (2♀ 3♂), 22–23.ii.2010 (1♂) ; 1♂ COSTA RICA, Limón, Puerto Viejo, Hotel Punta Cocles , 27.ii.1991, J.S. Noyes.

Figures

FIGURES 1–7. Petiolachertus spp. nov., females; 1–4. P.castor; 1holotype,habitus in lateral view; 2paratype, head+mesosoma in dorsal view; 3 paratype, metasoma in dorsal view; 4 holotype, head in frontal view; 5–7. P. pollux; 5 holotype, habitus in lateral view; 6 paratype, habitus in dorsal view; 7 paratype, head in frontal view.

FIGURES 14–20. Petiolachertus & Macroplectron spp. nov., head and antennae in lateral view; 14–15. P. castor; 14 female holotype; 15 male paratype; 16–17. P. pollux; 16 female paratype; 17 male paratype; 18–19. M. nishidai; 18 female holotype; 19 male paratype; 20 M. safron, female holotype.

FIGURES 21–26. Petiolachertus & Macroplectron spp. nov.; 21–23. Head in frontal view; 21 M. nishidai, female paratype; 22 M. nishidai, male paratype; 23 M. safron, female holotype; 24–26. Vertex; 24 M. nishidai, female holotype; 25 M. safron, female holotype; 26 P. castor, female holotype.