Lasalleistichus albiclava, 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 : 626-628

publication ID	https://doi.org/ 10.1080/00222933.2020.1715500
publication LSID	lsid:zoobank.org:pub:82E08F36-E2C4-42FF-AD12-11B49C272AC6
DOI	https://doi.org/10.5281/zenodo.4328741
persistent identifier	https://treatment.plazi.org/id/601C2776-0DE6-46CA-8153-03B6EE92C5B9
taxon LSID	lsid:zoobank.org:act:601C2776-0DE6-46CA-8153-03B6EE92C5B9
treatment provided by	Carolina
scientific name	Lasalleistichus albiclava
status	sp. nov.

Treatment

Lasalleistichus albiclava , sp. n.

( Figures 1 View Figure 1 (a,c – e), 2(a,d), 3(c))

Diagnosis. Mesoscutum ±flat with engraved and weak reticulation ( Figure 1 View Figure 1 (e)); fore and mid coxae completely white ( Figure 1 View Figure 1 (a)); propodeum with weak reticulation ( Figure 1 View Figure 1 (e)); petiole 1.3× as long as wide with two anterolateral spines, one on each side ( Figure 1 View Figure 1 (e)); gaster completely dark ( Figure 1 View Figure 1 (a,e)).

Description. Female holotype. Length 1.8 mm. Head. See description for genus. Mesosoma. Mesoscutum ±flat with engraved weak reticulation; midlobe with a complete median groove. Mesoscutellum smooth between submedian grooves, lateral to grooves with very weak reticulation, partly smooth. Axillae smooth and shiny. Propodeum with weak reticulation throughout; callus with two setae. Fore wing with three setae on the dorsal surface of submarginal vein. Metasoma. Petiole anterolaterally with 1 + 1 spines. Gaster ovate; Gt 2 – 4 smooth and shiny, Gt 1 with anterior ⅓ and Gt 5 – 7 completely with very fine and weak reticulation.

Ratios. Head: w/l (dorsal view) 1.95; w/l (frontal view) 1.30; POL/OOL 1.88; posterior ocellus w/POL 2.27; head w/mss w 1.26; mouth w/MS 1.78; MS/HE 0.46; scape l/HE 0.87; distance toruli to anterior ocellus/toruli to mouth margin 1.0; flg+ped l/mss w 1.61; scape l/ w 4.25; F1 l/ w 3.0; F2 l/ w 1.75; F3 l/ w 1.50; clava l/ w 3.22; ped l/F1 l 0.71; F1 l/F2 l 1.71; F1 l/F3 l 2.0; F1 l/ clava l 0.83; F2 l/clava l 0.48; F3 l/clava l 0.41; F1 w/ped w 1.25; antennal spicule l/C3 l 0.27. Mesosoma: l/ w 1.61; midlobe msc l/sct l 1.31; dorsellum l/ppd l 0.47; sct l/ w 0.85; distance between smg anteriorly/posteriorly 0.55; part between smg w/part lateral of smg w (both measured medially) 2.71; part between smg l/w (width measured medially) 1.53; CC l/ w 19.2; CC l/MV l 0.77; MV l/SV l 5.0. Metasoma: petiole l/ w 1.33; gaster l/ w 1.82; gaster l/mss l 1.24; Gt 7 l/ w 0.40; longest cercal seta l/next longest cercal seta l 2.40.

Colour. Head reddish-brown to yellowish-brown, with vertex darker than frons ( Figure 1 View Figure 1 (c,e)). 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 1 View Figure 1 (c)). Pronotum yellowish-brown; mesoscutum reddish-brown with weak metallic tinges; axillae yellowish-brown; mesoscutellum with the part between submedian lines dark reddish-brown and parts lateral to submedian lines dark brown; setae on pronotum, mesoscutum and mesoscutellum black ( Figure 1 View Figure 1 (e)). Dorsellum and propodeum reddish-brown. Pleura reddish-brown with a weak metallic tinge ( Figure 1 View Figure 1 (a)). Tegulae dark brown; wing venation yellowish-white; fore wing hyaline with median part distinctly infuscate ( Figure 1 View Figure 1 (a)); hind wing completely hyaline. Legs ( Figure 1 View Figure 1 (a)) with fore and hind coxae white, mid coxa dark brown; trochanters on fore and mid legs dark brown, white on hind leg; femora dark brown; fore tibia yellowishbrown, mid and hind tibiae dark brown; tarsi yellowish-brown. Petiole reddish-brown ( Figure1 View Figure 1 (e)). Gaster dark brown ( Figure 1 View Figure 1 (e)).

Variation. Length 1.5 – 2.1 mm. Thoracic dorsum, including propodeum and petiole, darker in some specimens, and sometimes also more metallic with a weak bluish tinge. Hind coxa sometimes with entire posterior surface dark brown. Reticulation on mesoscutum is stronger but still engraved in some specimens. Several specimens have four setae on the submarginal vein.

Male. Length 1.4 – 1.6 mm. Antenna with F1 – F4 with subbasal whorls of setae, setae reaching beyond the apex of the corresponding flagellomere ( Figure 3 View Figure 3 (c)). Scape with ventral plaque situated apically ( Figure 3 View Figure 3 (c)). Otherwise, similar to female.

Ratios. Head: w/l (dorsal view) 1.90; w/l (frontal view) 0.67; head w/mss w 0.63; mouth w/ MS 1.65; MS/HE 0.49; scape l/HE 0.94; flg+ped l/mss w 1.88; scape l/ w 3.30; scape l/plaque l 2.20; F1 l/ w 2.50; F2 l/ w 3.0; F3 l/ w 2.83; F4 l/ w 2.67; clava l/ w 4.86; ped l/F1 l 1.07; F1 l/F2 l 0.83; F1 l/F3 l 0.88; F1 l/F4 l 0.94; F1 l/clava l 0.44; F2 l/clava l 0.53; F3 l/clava l 0.50; F4 l/ clava l 0.47; longest subbasal setae on F1 l/F1 l 1.73. Mesosoma: l/ w 1.56. Metasoma: petiole l/ w 1.25; gaster l/ w 1.64; gaster l/mss l 0.92.

Colour. Similar to female but with entire antennal flagellum dark ( Figure 3 View Figure 3 (c)), thoracic dorsum excluding axillae black with metallic greenish tinges, axillae reddish-brown ( Figure 2 View Figure 2 (d)), posterior surface of hind coxa dark brown. Plaque on scape with same pale colour as scape ( Figure 3 View Figure 3 (c)), i.e. not dark as in most other tetrastichine genera.

Material examined. HOLOTYPE ♀ ‘ COSTA RICA: Heredia, E.B. La Selva , 75 m, 10°26 ʹ N 84°01 ʹ W, 22 – 24.ii.2012, J.S. Noyes, BMNH (Ent) 2012 – 91 ’ in NHM.

84f# 3♂ PARATYPES (deposited in MZLU, MZUCR, NHM). 53♀ 2♂ from same locality as holotype but collected 22.i-2.ii.1991 (1♀), ii.1994 (1♀), iv.1994 (2♀), ii.1996 (1♀), 1.iii.1996 (1♀), 15.iii.1996 (1♀), iii.1996 (1♀), 30 – 31.ii.2002 (2♀), 27 – 28.ii.2003 (9♀), 23 – 24.ii.2005 (4♀ 1♂), 23.ii.2006 (1♀), 28 – 29.ii.2008 (5♀), 24 – 25.ii.2011 (6♀), 22 – 24.ii.2012 (4♀), 25. ii.2016 (2f# 1♂), 22.ii.2018 (12♀); 1♀ ‘ COSTA RICA: Heredia, 11 km SE La Virgen, 450 – 550 m, 20.iii.2003, 05/M/18/038, INBio, OET, ALAS ’; 1♀ from same locality as previous but collected 23.ii-20.iv.2003; 2♀ ‘ COSTA RICA: Alajuela, San Carlos, Sendero Pilón , 600 m, 4.viii-5.ix.2000, G. Carballo, MT, LN 457900/269100, #58461 ’; 1♀ from same locality as previous but collected 6 – 14.xi.2000; 1♀ ‘ COSTA RICA: Alajuela, San Carlos, R.F. Arenal , Stor la Península , 600 m, 17.vi.2000, G. Carballo, YPT, LN 271500/453800, #56556 ’; 2♀ ‘ COSTA RICA: Limón, Pococí, Colorado, Sct Cerro Cocorí , 30 km N Cariari, 100 m, 10.i-11.ii.1995, E. Rojas, MT, LN 567500/286000, #4507 ’; 1♀ ‘ COSTA RICA: Limón, Valle La Estrella , 100 m, 8. iv-15.v.1994, G. Carballo, MT, LN 184600/643300 #3142 ’; 1♀ from same locality as previous but collected 8.viii-14.ix.1994; 1f# ‘ COSTA RICA: Limón, Hitoy-Cerere , BR HQ, 14 – 18.i. 1991, 100 m, J.S. Noyes ’; 2♀ ‘ COSTA RICA: Limón, 4 km NE Bataam, x-xi.1999, P. Hanson ’; 4♀ ‘ COSTA RICA: Puntarenas, P.N. Corcovado , Los Patos , 08°33 ʹ N 83°30 ʹ W, 200 m, ii.2000, MT&YPT, J.S. Noyes & J.A. Azofeifa ’; following from same locality as previous but collected 1 – 9.iii.2000 (1♂), 21.ii.2002 (1♀); 9♀ ‘ COSTA RICA: Puntarenas, Golfito, P.N. Corcovado , Est. Los Patos , Send. a Sirena , 100 m, 10.xi-26.xii.2000, J. Azofeifa, LS 514200/276500, #61192 ’; 1♀ ‘ COSTA RICA: Puntarenas, P.N. Corcovado , 600 m S. de Cerro Rincón , 745 m, 23.iv-24. vi.2002, J. Azofeifa, LS 275300/521350, #70844 ’; 1♀ ‘ COSTA RICA: Puntarenas, R.F. Golfo Dulce , Estac. Agujas , Send. Trocha , 300 m, 18.viii-18.ix.2001, J. Azofeifa, MT, LS 276750/ 526550, #64515 ’; 1♀ ‘ COSTA RICA: Puntarenas, Los Charcos de Osa , 08°40 ʹ N 83°30 ʹ W, 50 m, 15 – 16.ii.2010, J.S. Noyes ’; 1♀ ‘ COSTA RICA: San José, Zurqui de Moravia , 1600 m, x-xi.1991, P. Hanson, MT, LN 225700/534800, #3085 ’.

Distribution. Costa Rica.

Etymology. From the Latin albus = white, and clava = club, referring to the predominantly white antennal clava. Females of all species of Lasalleistichus have a white antennal clava, so this character is not unique for this species.