Horismenus missouriensis (Ashmead)

Hansson, Christer, Kenyon, Sarah G. & Benrey, Betty, 2019, Species of Horismenus Walker (Hymenoptera: Eulophidae) associated with bruchid beetles (Coleoptera: Chrysomelidae: Bruchinae), including five new species, Zootaxa 4585 (1), pp. 168-188 : 186-187

Horismenus missouriensis (Ashmead)

Figs 48–51 , 60–63 .

Holcopelte missouriensis Ashmead, 1888:101 . Lectotype female in USNM, designated by Burks (1971), examined.

Holcopelte popenoei Ashmead, 1888:101 . Lectotype female in USNM, designated by Burks (1971), examined. Synonymized by Girault (1934).

Horismenus missouriensis (Ashmead) , Schmiedeknecht (1909).

Diagnosis. Antennal scrobes joining below frontal suture (as in Figs 56, 57 ); first gastral tergite with posterior 2/3 reticulate with isodiametric meshes and with punctures, or predominantly with punctures; female flagellomeres short and stout ( Figs 50 , 62 ), e.g. first flagellomere 1.7× as long as wide; male scape 2.8× as long as wide ( Fig. 51 ); forewing speculum open below; propodeum with median carina with sides parallel and with anterior part blunt ( Fig. 63 ); petiole with median carina; female gaster short and ovate, MM/LG = 1.1. Similar to bruchophagus but with head and mesosoma bright metallic and male scape less swollen and with basal ½ pale; and to productus but first gastral tergite partly or completely with punctures in posterior part.

Distribution. Argentina ( Hansson 2009), Belize ( Hansson 2009), Brazil ( De Santis 1980, Sari et al. 2002), Colombia ( Hansson 2009), Costa Rica ( Hansson 2009), Honduras ( Hansson 2009), Mexico ( Hansson & Aebi 2004), Peru ( Hansson 2009), Trinidad & Tobago ( Hansson 2009), U.S.A. ( Ashmead 1888) (from New York and southward (Burks 1971)).

Hosts. Acanthoscelides sp. on Phaseolus spp. ( Hansson & Aebi 2004), A. floridae Horn ( Peck 1963) , A. submuticus (Sharp) ( Peck 1963) , Amblycerus robiniae (Fabricius) ( Peck 1951) , Ctenocolum crotonae (Fåhraeus) ( Sari et al. 2002), Gibbobruchus sp. ( Burks 1971). All hosts are Chrysomelidae : Bruchinae ( Coleoptera ). New records: Acanthoscelides sp. on Mimosa pigra ; bruchid in Acacia farnesiana ; bruchid in Sesbania sp. ( Fabaceae ); Etiella zinchenella ( Lepidoptera : Pyralidae ) on pigeon pea ( Cajanus cajan , Fabaceae ); Leucaena leucocephala (Fabaceae) ; seeds of Symplocos limon (Symplocaceae) ; seed pods of Acacia and Prosopis (Fabaceae) . This species is a parasitoid on larvae of bruchids ( Coleoptera : Chrysomelidae : Bruchinae), other records need confirmation.

Material examined. Type material: Lectotype female of H. missouriensis labeled “ Missouri ”, “Type no. 41369 U.S. N.M.” (USNM); lectotype female of H. popenoei labeled “ Mar. 15 ”, “Riley Co Ks F. Marlatt”, “149”, “1274”, “Type no. 41370 U.S. N.M.” (USNM). Additional material: As accounted for in Hansson (2009).

Molecular data. Horismenus missouriensis equals “HM3” in Kenyon et al. (2015) and molecular data associated with “HM3” is accounted for in that paper.

Figures

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.

FIGURES 60–67. Horismenus spp. 60–63. H. missouriensis (Ashmead), female; 60, vertex; 61, head lateral; 62, antenna lateral; 63, propodeum dorsal. 64–67. H. stator sp. nov., female; 64, vertex; 65, head lateral; 66, antenna lateral; 67, propodeum dorsal.

FIGURES 56–59. Horismenus stator sp. nov.; 56, head frontal, female; 57, head frontal, male; 58, mesosoma dorsal, female; 59, gaster dorsal, female.