Diacamma rugosum rugosum Sm. var. ovalis Karawajew, 1935a: 62, w (unavailable name; first available use of name: Chapman & Capco 1951: 56). Current status: Diacamma rugosum ovale (s/f Ponerinae). Type locality(-ies): “Ba-Me-Thuot, 700 m, Prov. Danlac, Şdannam, an der Grenze von Cambodge, K. Davydov, Nr. 5920, 1 w”. Original Karawajew labels: 1 w, “Ba Me Thuot / Annam. 30.VI. / 30 K. Davydov ”, “5720. Coll. Karavaievi ”, “ Diacamma / rugosum var. / ovalis Karav. / typus”, “ Holotypus / Diacamma rugosum / v. ovalis Karaw. ”, “Dlussky / restaur.”, “not a type! / 1994 / W. L. Brown ”. Material: HOLOTYPE, w (CASENT0916813) (Box 2). Notes. In the early 1990s, we sent a sample of Diacamma type material to Prof. W. L. Brown (USA) for study, but he was unable to complete a revision of the genus before his death. However, there is an additional Brown label on the pin with this subspecies “not a type! / 1994 / W. L. Brown”. Moreover, the number of the holotype specimen in the original description is 5920, but 5720 in the collection. The situation may be similar to that involving D. rugosum gibbosum (above).

Published as part of Radchenko, Alexander G., Fisher, Brian L., Esteves, Flavia A., Martynova, Ekateryna V., Bazhenova, Tatyana N. & Lasarenko, Svetlana N., 2023, Ant type specimens (Hymenoptera, Formicidae) in the collection of Volodymyr Opanasovych Karawajew. Communication 1. Dorylinae, Poneromorpha and Pseudomyrmecinae, pp. 1-32 in Zootaxa 5244 (1) on page 16, DOI: 10.11646/zootaxa.5244.1.1, http://zenodo.org/record/7645729