biostudies-literatureUnknown1193Nguyen LTPNew data are presented for the potter wasp genus <i>Orancistrocerus</i> van der Vecht (Eumeninae, Odynerini) occurring in Vietnam. Two species are described as new to science: <i>Orancistrocerusthanhnhat</i><b>sp. nov.</b> and <i>O.thanghen</i><b>sp. nov.</b><i>Orancistrocerusaterrimuserythropus</i> van der Vecht is synonymized with <i>Orancistrocerusaterrimusaterrimus</i> (de Saussure); the male genitalia of this species are described for the first time. An updated key is presented to all species of the genus.ZooKeys95-110https://www.ebi.ac.uk/biostudies/studies/S-EPMC10924168biostudies-literatureThe solitary wasp genus <i>Orancistrocerus</i> from Vietnam, with descriptions of two new species (Hymenoptera, Vespidae, Eumeninae).PMC10924168Nguyen LTPNguyen ADDang HTfalseThe solitary wasp genus <i>Orancistrocerus</i> from Vietnam, with descriptions of two new species (Hymenoptera, Vespidae, Eumeninae).New data are presented for the potter wasp genus <i>Orancistrocerus</i> van der Vecht (Eumeninae, Odynerini) occurring in Vietnam. Two species are described as new to science: <i>Orancistrocerusthanhnhat</i><b>sp. nov.</b> and <i>O.thanghen</i><b>sp. nov.</b><i>Orancistrocerusaterrimuserythropus</i> van der Vecht is synonymized with <i>Orancistrocerusaterrimusaterrimus</i> (de Saussure); the male genitalia of this species are described for the first time. An updated key is presented to all species of the genus.2024-01-01T00:00:00Z20242025-04-04T21:31:20.117Z2025-04-04T21:31:20.117ZS-EPMC109241683846375710.3897/zookeys.1193.116087