Miscellaneous notes on the systematics of and synonymy in Entiminae (Coleoptera, Curculionidae) Author Yunakov, Nikolai 0000-0002-0824-7804 Institute of Biodiversity, NGO, 109 West Wyoming Ave., Melrose, MA 02176, USA Author Korotyaev, Boris 0000-0002-3492-2746 Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, 199034, St. Petersburg, Russia Author Alziar, Gabriel 2 сité Beauséjour, 12120 Cassagnes-Bégonhès, France text Contributions to Entomology 2024 2024-12-20 74 2 249 264 journal article 10.3897/contrib.entomol.74.e136994 33208AAA-4462-4248-AB0C-F6B1D46BB1DF Genus Sepiomus Aurivillius, 1891 , reestablished tribal placement Fig. 2 Sepiomus Aurivillius, 1891: 211 , type species by original designation Episomus parallelus Chevrolat, 1883 (classified as Cyphicerini ); Marshall 1944: 74 (classified as Leptopiinae); Alonso-Zarazaga and Lyal 1999: 187 (classified as Tropiphorini = Byrsopagini ). Material examined. Sepiomus frontalis Aurivillius, 1891 : CAMBODIA • 1 ♂ ; “ Kirirom / (Cambodge) ”; M. André leg.; GAC . Sepiomus parallelus Chevrolat, 1883 : CAMBODIA • 1 ♂ ; “ Kiri Rom / (Cambodge) ”; M. André leg.; GAC (Fig. 2 A ) • 1 ♀ ; “ Kirirom / ( Cambodge ) ”; M. André leg.; GAC . • 1 ♂ , 3 ♀ ; “ Indochine ”; GAC . Figure 2. Sepiomus parallelus , male: A. Body dorsal and lateral view; B. Head dorsal view; C. Head lateral view; D. Head ventral view; E. Aedeagus dorsal and lateral view; F. Sternite 8 and 9. Abbreviations: ml-app – apical preostial process of median lobe; Mst 8 – sternite 8; pr – prementum. Discussion. Sepiomus was established for three Indo-Chinese species: Episomus parallelus Chevrolat, 1883 from Cambodia and Vietnam , Sepiomus frontalis Aurivillius, 1891 and S. tuberculatus Aurivillius, 1891 from Cambodia . Later, Faust (1895 a ) described a Vietnamese species, S. aurivilliusi Faust, 1895 , and added to this genus another Vietnamese species Corigetus figulus Faust, 1893 ( Faust 1895 b ), characterized by thin antennal funicle and a widened base of the antennal scape in females. Subsequently, Heller (1925) described Sepiomus tuberculatus microscutellaris Heller, 1925 from North Sumatra, and Vayssière (1941) discovered S. casuarinae Vayssière, 1941 in Vietnam . Some Cyphicerini in South-East Asia exhibit specific modifications of the head capsule and body vestiture resembling those of Episomus Schoenherr, 1823 , such as the Formosan weevil Episomoides albinus (Matsumura, 1910) ( Kôno 1930 ) . Sepiomus was originally classified in Cyphicerini . Marshall 1944 while revising the genera of Cyphicerini proposed a new classification based on the chaetotaxy of prementum and mandibles. According to this classification, Cyphicerini genera have 3 - setose mandibles, thus genera Sepiomus and Cylindromus having 4 - setose mandibles were transferred to Leptopiinae. Alonso-Zarazaga and Lyal (1999) conventionally retained it in Tropiphorini . We transfer Sepiomus to Cyphicerini based on the deeply emarginate epistome (Fig. 2 B ), the prementum concealing the maxillae (Fig. 2 D , pr ), and male genitalia typical for this tribe: median lobe significantly shorter than apodemes and possessing apical preostial process (Fig. 2 E , ml-app ); endophallus very long, unfolded from median lobe, and bearing large fields of abundant, dense spiculae; sternite 8 consists of heavily sclerotized, broadly lanceolate hemisternites with long setae along the posterior margin (Fig. 2 F , Mst 8 ). Sepiomus may be placed in the subtribe Cyphicerina based on the presence of postocular lobes (Fig. 2 C ).