Integrative taxonomy and analysis of species richness patterns of nocturnal Darwin wasps of the genus Enicospilus Stephens (Hymenoptera, Ichneumonidae, Ophioninae) in Japan Author Shimizu, So Laboratory of Insect Biodiversity and Ecosystem Science, Graduate School of Agricultural Science, Kobe University, Rokkodaicho 1 - 1, Nada, Kobe, Hyogo 657 - 8501, Japan & DC and Overseas Challenge Program for Young Researchers, Japan Society for the Promotion of Science, Tokyo, Japan & Depertment of Life Sciences, the Natural History Museum, Cromwell Road, London SW 7 5 BD, UK https://orcid.org/0000-0002-5202-4552 parasitoidwasp.sou@gmail.com Author Broad, Gavin R. Depertment of Life Sciences, the Natural History Museum, Cromwell Road, London SW 7 5 BD, UK https://orcid.org/0000-0001-7223-5333 Author Maeto, Kaoru Laboratory of Insect Biodiversity and Ecosystem Science, Graduate School of Agricultural Science, Kobe University, Rokkodaicho 1 - 1, Nada, Kobe, Hyogo 657 - 8501, Japan text ZooKeys 2020 990 1 144 http://dx.doi.org/10.3897/zookeys.990.55542 journal article http://dx.doi.org/10.3897/zookeys.990.55542 1313-2970-990-1 7B73642C278D40F89091B26213C9A704 9F51F78CD53F5005A305DE65494002C4 Enicospilus multidens Chiu, 1954 stat. rev. Figure 29 Enicospilus multidens Chiu, 1954: 75; HT ♀ from Japan, TARI, examined; stat. rev. Specimens examined. Total of 30 specimens (14♀♀16♂♂): Japan (14♀♀16♂♂). Type series: HT ♀ of Enicospilus multidens Chiu, 1954, Minoh, Ōsaka , Kinki, JAPAN, 20.VII.1918, N. Tosawa leg. (TARI). Distribution. Eastern Palaearctic region ( Chiu 1954 ; present study); new to the Oriental region; this is a predominantly Eastern Palaearctic species. JAPAN: [ Hokkaido ]*; [ Tohoku ] Aomori*; [Hokuriku] Niigata*; [ Kanto-Koshin ] Gunma*, Nagano*, Yamanashi*, and Saitama*; [ Tokai ] Shizuoka* and Mie*; [Kinki] Ōsaka ( Chiu 1954 ; present study) and Hyogo *; [ Chugoku ] Tottori ( Chiu 1954 ), Shimane* and Hiroshima*; [Shikoku] Ehime* and Kochi *; [ Kyushu ] Kumamoto*; [ Ryukyus ] Kagoshima*. *New records. Bionomics. Unknown. Differential diagnosis. In some ichneumonid collections, this species has been confused with E. shikokuensis . However, E. multidens stat. rev. can be distinguished from E. shikokuensis by shallow concavity of proximal outer mandibular surface (Fig. 29B, D ) (proximal outer mandibular surface with very wide subtriangular concavity in E. shikokuensis , as in Fig. 44B, D ); separated proximal and distal sclerites (Fig. 29F ) (proximal and distal sclerites usually confluent, as in Figs 7B , 44F , or rarely separated, as in Fig. 7A , in E. shikokuensis ); stouter, shorter, and evenly narrowed mandible (Fig. 29B, D ) (mandible much longer, slender, proximally strongly narrowed, and apical 0.7 parallel-sided in E. shikokuensis , as in Fig. 44B, D ); narrower lower face (Fig. 29B ) (lower face wider in E. shikokuensis , as in Fig. 44B ), etc. This species is also similar to E. combustus , and Uchida (1955) synonymised E. multidens stat. rev. under E. combustus . However, they are morphologically easily distinguished by body colour pattern (i.e., body entirely testaceous in E. multidens stat. rev., as in Fig. 29A , but body with black marks in E. combustus , as in Fig. 13A ), and DNA barcodes also separate them. Hence, we revise the status of E. multidens stat. rev. as a valid species. Figure 29. Enicospilus multidens Chiu, 1954, stat. rev. ♂ from Japan A habitus B head, frontal view C head, dorsal view D head, lateral view E mesosoma, lateral view F central part of fore wing.