Irenangelus is closely related to the more widespread genus Ceropales, with both forming a monophyletic subfamily, Ceropalinae, within the Pompilidae.[3] This subfamily is considered the most basal lineage of the Pompilidae. However, this classification is debated due to the kleptoparasitic life history of ceropalines. Current research suggests that Ceropalinae and other pompilids evolved from a common ectoparasitoid ancestor.[3]
Biology
In the Philippines, species of Irenangelus are known to be kleptoparasites of Auplopus nyemitawa and Tachypompilus analis. Additionally, I. eberhardi is a kleptoparasite of Auplopus semialatus. The kleptoparasitic behavior of I. lukosanus has been observed as it pursues its host pompilid, Platydialepis ryoheii, while the latter transports its prey, Heteropoda forcipata, to its nest. The kleptoparasitic wasp pounces on the spider and extends its gaster, attempting to insert the tip into a slit of the prey's book lung.[3]
↑ V.S.L. Pate (1946). "The Generic Names of the Spider Wasps (Psammocharidae olim Pompilidae) and Their Type Species (Hymenoptera: Aculeata)". Transactions of the American Entomological Society. 72 (3): 65–137. JSTOR25077544.
1 2 Kimsey, Lynne S.; Wasbauer, Marius S. (2004). "Revision of new world species of the cleptoparasitic pompilid genus Irenangelus Schulz (Hymenoptera: Pompilidae)". Journal of the Kansas Entomological Society. 77 (4): 650–668. doi:10.2317/e-1.1. S2CID85582755.
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