Wow assingi gen. and spec. n., with description of a new tribe of Aleocharinae (Coleoptera, Staphylinidae) Author Jałoszyński, Paweł Museum of Natural History, University of Wrocław, Sienkiewicza 21, 50 - 335 Wrocław, Poland Author Maruyama, Munetoshi The Kyushu University Museum, Hakozaki 6 - 10 - 1, Higashi-ku, Fukuoka, 812 - 8581 Japan Author Klimaszewski, Jan 3407 Sparrowhawk Ave., Victoria, BC, Canada V 9 C 0 L 9 (emeritus scientist: Natural Resources Canada, Pacific Forestry Centre, 506 West Burnside Road, Victoria, BC, Canada V 8 Z) text Zootaxa 2023 2023-10-20 5357 4 573 586 http://dx.doi.org/10.11646/zootaxa.5357.4.5 journal article 274469 10.11646/zootaxa.5357.4.5 b71b135c-e7a8-4f91-add9-d9132736e878 1175-5326 10064893 122F5432-1468-4BE6-9566-73083903A050 Tribe Wowini Jałoszyński, Maruyama & Klimaszewski , trib. n. Type genus: Wow Jałoszyński, Maruyama & Klimaszewski , gen. n. (here designated). Diagnosis. The following unique combination of character states defines this tribe: maxillary palpus with pseudosegment ( Figs 7–8 ); labial palpus trimerous with palpomere 3 large, apically dilated ( Figs 10–11 ); ligula undivided, broadly subconical with broadly rounded apex, strongly sclerotized ( Figs 10–11 ); lateral lobes of labial apodeme (component “r” of premental sclerite in Weide et al. (2014)) short ( Figs 10–11 ); prelabium with two pairs of medial setae inserted on inversely drop-shaped median premental sclerotization ( Figs 10–11 ) (possible autapomorphy); prothoracic hypomeron fully exposed in posterior half in lateral view; mesocoxal rests not separated, with mesoventral and anterior metaventral intermesocoxal processes both short, subtriangular and pointed at apices ( Fig. 13 ); tarsal formula 4-4-4 ( Figs 14–15 ); median lobe of aedeagus ( Figs 19–20 ) lacking ‘athetine bridge’; paramere with velar sac completely connected (fused) with apical lobe of paramerite ( Fig. 23 ). Description. Body shape generalized (not limuloid or myrmecoid).Head with postoccipital collar (= ‘neck’) short and narrower than 1/3 of its width, postoccipital ‘suture’ and subocular ridge (= occipital ‘suture’) not discernible in ventral view. Maxillary palpus tetramerous and generalized, except for developed apical pseudosegment. Prementum with median elongate sclerotization bearing two pairs of medial setae. Labial palpus trimerous, with palpomere 3 dilated distally; ligula undivided, subconical with broadly rounded apex, strongly sclerotized. Prothoracic hypomera in posterior half fully exposed in lateral view. Mesocoxal rests adjacent at middle. Mesoventral and anterior metaventral intermesocoxal processes both short subtriangular, apically pointed. Exposed portion of mesoscutellar shield broadly subtriangular and setose. Abdominal paratergites bipartite. Tarsal formula 4-4-4. Median lobe of aedeagus lacking ‘athetine bridge’. Velar sac fused with apical lobe of paramerite. Remarks. The bizarre structure of the head and antennae in Wow assingi sp. n. ( Figs 2–4 ) is not included in the tribal diagnosis and description, as it can be an autapomorphy of this peculiar genus. A similar cephalic transformation is known in males and females of a single genus of Lomechusini Fleming , a tribe with all remaining (over 220) genera having unmodified heads. This interesting parallelism and extraordinary head structure are commented in the Discussion.