Lasalleistichus fuscicoxa, Hansson, 2020

Hansson, Christer, 2020, Lasalleistichus a new genus of Tetrastichinae (Hymenoptera: Eulophidae) from the Neotropical regionı including four new species, Journal of Natural History 54 (9), pp. 621-633 : 630-631

Lasalleistichus fuscicoxa , sp. n.

( Figure 2 (b,e))

Diagnosis. Similar to L. albiclava but with fore coxa completely dark brown ( Figure 2 (b)) and midlobe of mesoscutum more convex ( Figure 2 (e)).

Description. Female holotype. Length 1.7 mm. Head. See description for genus. Mesosoma. Mesoscutum convex, sidelobes with very weak reticulation, midlobe with engraved and strong reticulation; midlobe with a median groove in posterior 4/5. Mesoscutellum and axillae smooth and shiny, without reticulation. Propodeum with weak reticulation throughout; callus with three setae. Fore wing with four setae on the dorsal surface of submarginal vein. Metasoma. Petiole without lateral spines, dorsal surface with strong longitudinal carinae. Gaster ovate-elongate; tergites smooth and shiny.

Ratios. Head: w/l (dorsal view) 2.11; w/l (frontal view) 1.29; POL/OOL 1.67; posterior ocellus w/POL 2.27; head w/mss w 1.25; mouth w/MS not measurable; MS/HE 0.40; scape l/HE 0.80; distance toruli to anterior ocellus/toruli to mouth margin 1.07; flg+ped l/mss w 1.63; scape l/ w 4.57; F1 l/ w 3.25; F2 l/ w 1.88; F3 l/ w 1.63; clava l/ w 3.10; ped l/F1 l 0.77; F1 l/F2 l 1.73; F1 l/F3 l 2.0; F1 l/clava l 0.84; F2 l/clava l 0.48; F3 l/clava l 0.42; F1 w/ped w 1.33; antennal spicule l/C3 l 0.25. Mesosoma: l/ w 1.56; midlobe msc l/sct l 1.27; dorsellum l/ppd l 0.50; sct l/ w 0.88; distance between smg anteriorly/posteriorly 0.59; part between smg w/part lateral of smg w (both measured medially) 3.80; part between smg l/w (width measured medially) 1.57; CC l/ w 19.2; CC l/MV l 0.78; MV l/SV l 4.92. Metasoma: petiole l/ w 1.0; gaster l/ w 1.72; gaster l/mss l 1.10; Gt 7 l/ w 0.53; longest cercal seta l/next longest cercal seta l 2.0.

Colour. Head yellowish-brown, with vertex slightly darker than frons ( Figure 2 (b)). Antennal scape yellowish-white with dorsal edge yellowish-brown, pedicel and F1 – F3 dark brown, clava with C1 brown with apical part white, C2 – C3 white ( Figure 2 (b)). Pronotum yellowish-brown ( Figure 2 (e)); mesoscutum dark brown with metallic blue tinges; axillae dark yellowish-brown; mesoscutellum very dark brown, almost black; setae on pronotum, mesoscutum and mesoscutellum black. Dorsellum dark brown. Propodeum very dark brown, almost black. Pleura dark reddish-brown ( Figure 2 (b)). Tegulae dark brown; wing venation yellowish-white; fore wing hyaline with median part distinctly infuscate ( Figure 2 (b,e)); hind wing completely hyaline. Legs ( Figure 2 (b)) with fore and mid coxae dark brown, hind coxa white with postero-apical one-half dark brown; trochanters, femora and tibiae dark brown; tarsi yellowish-brown. Petiole dark yellowishbrown ( Figure 2 (e)). Gaster dark brown ( Figure 2 (e)).

Material examined. HOLOTYPE ♀ ‘ COSTA RICA: Limón, P.N. Cahuita , 2 m, 9°43 ʹ N 82°49 ʹ W, 27.ii.2008, J.S. Noyes, BMNH(Ent) 2010 – 21 ’ in NHM.

Distribution. Costa Rica.

Etymology. From the Latin fuscus = dark, and coxa = hip, referring to dark brown fore coxae.

Figures

Figure 2. (a) Lasalleistichus albiclava, ♂ paratype habitus lateral. (b) L. fuscicoxa, ♀ holotype habitus lateral. (c) L. longicaulis, ♀ holotype habitus lateral. (d) L. albiclava, ♂ paratype habitus dorsal. (e) L. fuscicoxa, ♀ holotype habitus dorsal. Scale 1 mm.