Poecilopompilus costatus oenochrous (Schultz)

Kurczewski, Frank E., West, Rick C. & Waichert, Cecilia, 2024, New host records for Nearctic and Neotropical spider wasps (Hymenoptera: Pompilidae), Insecta Mundi 2024 (34), pp. 1-32 : 19

Poecilopompilus costatus oenochrous (Schultz)

ARGENTINA: Buenos Aires Province, Magdalena; 4 December 2022, 3:06 PM; M. Arregui. Host: Araneus lathyrinus (Holmberg) ( Araneidae ), adult or subadult female. The wasp stood on a leaf above ground level grasping the immobilized orb-weaver by the base of its left foreleg with her mandibles, retaining it in a perpendicular position ( Fig. 14 ; Arregui 2023).

This is the first host record for Poecilopompilus costatus oenochrous , Araneus lathyrinus , which is the typical host spider family for most species in this genus ( Kurczewski et al. 2020, 2022b).

ARGENTINA: Santa Fe Province, Nueve de Julio County; 3 March 2023, 1703 PM; I. M. Churruarin. Host: Ocrepeira venustula (Keyserling) ( Araneidae ), adult female. The wasp, clinging upside down to an upright narrow stem, held the orb-weaver cephalothorax upward, grasping the base of its left foreleg with her mandibles ( Churruarin 2023).

Ocrepeira venustula (Keyserling) ( Araneidae ) is a new host genus and species for Poecilopompilus costatus oenochrous . This is the second host record for P. costatus oenochrous .

Figures

Figures 13–18. Pompilid species with host spiders. 13) Episyron quinquenotatus quinquenotatus (Say) with Araneus gemmoides Chamberlin and Ivie, female. © Linda Mikolayenko. 14) Poecilopompilus costatus oenochrous (Schultz) with Araneus lathyrinus (Holmberg) (Araneidae), adult or subadult female. © Martin Arregui. 15) Tachypompilus vulpes (Dalla Torre) with Polybetes?pythagoricus (Holmberg) (Sparassidae), adult or subadult female. © Paulo Aranã. 16) Anoplius (Notiochares) triquetrus (Fox) with Pavocosa sp. (Lycosidae), adult or subadult male. © Alexandre Ferreira Righi. 17) Xerochares expulsus (Schulz) with Curicaberis minax (O. Pickard-Cambridge) (Sparassidae), penultimate male.© Georgia Born-Schmidt and M. Schmidt.18) Arachnospila titicacaensis (Strand) with Hogna?rufimanoides (Strand) (Lycosidae), adult or subadult female. © Francesco Romano and Nirvana Angela Marting Vidaurre.