Species of Horismenus Walker (Hymenoptera: Eulophidae) associated with bruchid beetles (Coleoptera: Chrysomelidae: Bruchinae), including five new species Hansson, Christer Kenyon, Sarah G. Benrey, Betty Zootaxa 2019 2019-04-11 4585 1 168 188 Hansson Hansson & Kenyon & Benrey 2019 [151,534,151,178] Insecta Eulophidae Horismenus GBIF Animalia Hymenoptera 17 185 Arthropoda species gabrielae sp. nov.   Figs 72–77   Diagnosis. Antennal scrobes join below frontal suture; female flagellomeres short and stout ( Fig. 76), 1 stflagellomere as long as wide, 2–3 transverse; male scape dark and 2.4× as long as wide ( Fig. 77); scutellum flattened and smooth and shiny ( Fig. 75); propodeum with median carina with sides straight and diverging towards posterior part, and with anterior part blunt ( Fig. 75); first gastral tergite with posterior ¼ with engraved reticulation ( Fig. 74). In the key in Hansson (2009),  H. gabrielaeruns either to  H. dryas(couplet F38) from which it differs in having much longer female gaster and shorter petiole (male is unknown in  H. dryas), or to  H. carolinensis(couplet F57) from which it differs in having a much longer gaster in female (male is unknown in  H. carolinensis) and with sides of median carina on propodeum straight and diverging towards posterior part (  H. carolinensiswith sides of carina rounded and converging in posterior part).   Description. FEMALE. Length 2.0– 2.3 mm. Scape yellowish-brown; pedicel and flagellum dark brown with metallic tinges. Frons golden. Vertex golden-green. Mesoscutum black with golden tinges, scutellum black, propodeum black with golden-green tinges. Coxae black with metallic bluish-green tinges; femora dark brown, tibiae and tarsi yellowish-white, 4 thtarsomere dark brown. Wings hyaline. Petiole metallic dark purple. Gaster with reticulate parts metallic dark purple, smooth and shiny parts black with golden-green tinges. Antenna as in Fig. 76. Frons with interscrobal and clypeal area smooth, part just above frontal suture with raised and weak reticulation, remaining parts with raised and strong reticulation; frontal suture V-shaped and complete; antennal scrobes join below frontal suture. Vertex with engraved and strong reticulation; with a median groove in posterior part, groove continues down on occiput. Occipital margin rounded. Mesoscutum with engraved reticulation; notauli as narrow and distinct grooves throughout. Scutellum flattened, smooth and shiny with very weak traces of reticulation in some places. Dorsellum smooth, with a row of pits along anterior margin. Coxae smooth with very weak engraved reticulation. Propodeum smooth and shiny, submedian grooves reticulate, anterolateral foveae reticulate but indistinctly delimited; propodeal callus with 3 setae. Forewing speculum closed below; with 17 admarginal setae. Gaster with first tergite smooth and shiny in anterior ¾, posterior ⅓ with engraved reticulation.  Ratios. DE/DO 5.1; WH/DE 2.0; HE/MS/WM 1.8/1.0/1.4; POL/OOL/POO 4.0/1.4/1.0; WH/WT 1.1; LW/ LM/HW 1.7/1.0/1.0; PM/ST 0.8; LC/WC 2.7; WG/WC 0.5; LS/LT 0.12; LP/WP 0.4; MM/LG 0.6–0.7. MALE. Length 1.4–1.7 mm. Frons metallic bluish-purple. Vertex metallic blue. Colour otherwise as in female. Antenna as in Fig. 77; scape dark brown, inflated and 2.4× as long as wide. Head and mesosoma as in female.  Ratios. HE/MS/WM 2.1/1.0/1.4; LP/WP 1.0; MM/LG 1.6.   Distribution. Mexico.   Hosts. Reared from an unidentified species of Bruchinae ( Coleoptera: Chrysomelidae) on  Leucaenasp. ( Fabaceae).   Type material.   Holotypefemale labelled “ MEXICO: Chetumal, Quintana Roo,  December 2017, G. Pérez- Lachaud”, “ Bruchidae, in seeds of  Leucaenatree”, in NHM.   Paratypes. 4♀and 4♂with same label data as holotype, mounted on cards ( ECO-CH-AR, MZLU, NHM).   Etymology. Named after Gabriela Pérez-Lachaud, the collector of the typematerial. 2235579661 2017-12 NHM Mexico Lachaud Chetumal 17 185 1 Quintana Roo holotype 2235579667 ECO-CH-AR, MZLU, NHM Mexico 17 185 8 4 4 Quintana Roo paratype