Species of Horismenus Walker (Hymenoptera: Eulophidae) associated with bruchid beetles (Coleoptera: Chrysomelidae: Bruchinae), including five new species Author Hansson, Christer Author Kenyon, Sarah G. Author Benrey, Betty text Zootaxa 2019 2019-04-11 4585 1 168 188 journal article 27346 10.11646/zootaxa.4585.1.10 a1790fd9-6a10-41fa-968e-dd7a111b2e7a 1175-5326 2636143 934CA17E-9BEF-4353-9F6B-EDCF87DFA9EE Horismenus multistriatus sp. nov. Figs 22–24 , 30–33 , 36, 39, 42 . Diagnosis . Antennal scrobes join below frontal suture ( Fig. 30 ); female flagellomeres long and slender ( Fig. 24 ), e.g. 1 st flagellomere 3.3× as long as wide; forewing speculum open below; scutellum convex ( Fig. 32 ); propodeum with anterolateral foveae predominantly smooth ( Fig. 39 ); female gaster with first tergite with elongate punctures ( Fig. 42 ), reaching over posterior ¾ of tergite. Similar to H. butcheri but differs in having anterolateral foveae on propodeum predominantly smooth ( Fig. 39 ), and first gastral tergite with elongate punctures in posterior ¾ ( Fig. 42 ). FIGURES 30–33. Horismenus multistriatus sp. nov. , female; 30, head frontal; 31, vertex; 32, mesosoma, dorsal; 33, gaster dorsal. Description . FEMALE. Length 2.0– 2.5 mm . Scape yellowish-brown with apical ⅓ dark brown with metallic tinges; pedicel and flagellum golden-green. Frons golden-green. Vertex golden-green. Mesosoma golden-green, propodeum with smooth parts golden-green, reticulate parts metallic dark purple. Coxae golden-green; femora and tibiae yellowish-white, tarsi yellowish-white with 4 th segment yellowish-brown. Wings hyaline. Petiole metallic dark purple. Gaster with first tergite golden-green in anterior ¼, metallic dark purple in posterior ¾; remaining tergites metallic dark purple. FIGURES 34–42. Horismenus spp. 34–36. 1 st funicular segment, female; 34, H. butcheri Hansson & Aebi ; 35, H. dennoi sp. nov. ; 36, H. multistriatus sp. nov ; 37–39. Left anterolateral fovea of propodeum, female; 37, H. butcheri ; 38, H. dennoi ; 39, H. multistriatus . 40–42. Posterior part of 1 st gastral tergite, female; 40, H. butcheri ; 41, H. dennoi ; 42, H. multistriatus . Antenna as in Fig. 24 . 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, incomplete not reaching eyes; 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. FIGURES 43–47. Horismenus butcheri Hansson & Aebi ; 43, body lateral, female; 44, mesosoma dorsal, female; 45, mesosoma dorsal, male; 46, antenna lateral, female; 47, antenna lateral, male. Mesoscutum with raised and strong reticulation; notauli as narrow and distinct grooves medially. Scutellum with engraved and strong reticulation. Dorsellum smooth, anterolaterally with two large foveae. Coxae very weakly reticulate and shiny. Propodeum, including anterolateral foveae smooth and shiny, posterolateral parts and submedian grooves reticulate; propodeal callus with two setae. Forewing speculum open below; with 17–18 admarginal setae. Gaster with first tergite smooth and shiny in anterior ⅓, posterior ¾ with elongate punctures. Ratios . DE/DO 4.7; WH/DE 2.0; HE/MS/WM 3.3/1.0/2.2; POL/OOL/POO 4.8/1.7/1.0; WH/WT 1.1; LW/ LM/HW 1.7/1.1/1.0; PM/ST 1.1; LC/WC 3.6; WG/WC 1.2; LS/LT 0.17; LP/WP 1.6; MM/LG 1.0. MALE. Unknown. Distribution . Mexico . Hosts . Acanthoscelides sp. ( Coleoptera : Chrysomelidae : Bruchinae) on Phaseolus coccineus (Fabaceae) . Type material . Holotype female labelled “ MEXICO , Morelos , Tepoztlan , 99°07'08.5''W , 18°59'54.6''N , 1915 m , 6.i.2008 , S. Kenyon ”, “From Acanthoscelides sp. on Phaseolus coccineus ”, in MZLU . Paratypes . 2♀ mounted on cards (in MZLU ). MEXICO . Morelos : from same locality and same host as holotype but collected 25.1.2008 ( 1♀ ); Tepoztlan , 99°07'08.1''W 18°59'50.7''N , 1908 m , 6.i.2008 , S. Kenyon , from Acanthoscelides sp. on Phaseolus coccineus ( 1♀ ) . FIGURES 48–55. Horismenus spp. 48–51. H. missouriensis (Ashmead) ; 48, body lateral, female; 49, mesosoma dorsal, female; 50, antenna lateral, female; 51, antenna lateral, male. 52–55. H. stator sp. nov. ; 52, body lateral, female; 53, mesosoma dorsal, female; 54, antenna lateral, female; 55, antenna lateral, male. Etymology . From the Latin multus = much, and stria = furrow, referring to the elongate punctures on 1 st gastral tergite in female. Molecular data . Horismenus multistriatus equals “HB1” in Kenyon et al. (2015) and molecular data associated with “HB1” is accounted for in that paper.