The parasitoid wasp family Ichneumonidae is arguably one of the groups for which current knowledge lags most strongly behind their enormous diversity. In a five-day meeting in Basel (Switzerland) in June 2019, 22 researchers from 14 countries met to discuss the most important issues in ichneumonid research, including increasing the speed of species discovery, resolving higher-level relationships, and studying the radiation of these parasitoids onto various host groups through time. All agreed that it is time to advertise ichneumonid research more broadly in the scientific community and thereby attract young talents to this group for which specialists are sorely lacking. In order to popularize the group, we here suggest a new name for the family, “Darwin wasps”, to reflect the pivotal role they played in convincing Charles Darwin that not all of creation could have been created by a benevolent god. We hope that the name catches on, and that Darwin wasps start buzzing more loudly across all disciplines of biology.

A total of 10 species of Enicospilus (Hymenoptera, Ichneumonidae, Ophioninae) have previously been reported from Nepal. Six new species are described here (E. alleni Shimizu sp. nov., E. kakanicus Shimizu sp. nov., E. nepalensis Shimizu sp. nov., E. nikami Shimizu sp. nov., E. phulchokiensis Shimizu sp. nov., and E. tangi Shimizu sp. nov.), and 10 are newly recorded (E. ashbyi Ashmead, 1904, E. bifasciatus (Uchida, 1928), E. capensis (Thunberg, 1824), E. flavocephalus (Kirby, 1900), E. formosensis (Uchida, 1928), E. grammospilus (Enderlein, 1921), E. pudibundae (Uchida, 1928), E. purifenestratus (Enderlein, 1921), E. yonezawanus (Uchida, 1928), and E. zebrus Gauld & Mitchell, 1981) from Nepal. A preliminary identification key to the Nepalese species of Enicospilus is provided. The elevational pattern of Nepalese Enicospilus is briefly discussed. Enicospilus purifenestratus is also recorded for the first time from Brunei.

Abstract A new species of the genus Enicospilus Stephens, 1835, E. kikuchii sp. nov., which belongs to the ichneumonid subfamily Ophioninae, is described based on two specimens that were collected in Saitama Prefecture of Honshû and Kagoshima Prefecture of Kyûshû in Japan. Enicospilus kikuchii sp. nov. belongs to the E. antefurcalis species-group. A key to species of the group and additional couplets for the key to Indo-Papuan Enicospilus species are provided.

A new species of Darwin wasp of the genus Dicamptus Szépligeti (Hymenoptera: Ichneumonidae: Ophioninae), D. curvus Pham, Matsumoto & Shimizu sp. nov., is described on the basis of type specimen from Lai Chau Province, northwest Vietnam. The new species probably belongs to the giganteus species group and is easily distinguishable from the other species of the group by the smaller indices of fore wing AI and CI as well as the form of sclerites. Two species, D. cantoni Gauld & Mitchell and D. reticulatus (Cameron), are recorded for the first time from Vietnam; and additional distribution records for D. nigropictus (Matsumura) in Vietnam are provided. Through the present study, a total of four Dicamptus species have been recognized in Vietnam and illustrated.