A revision of Cissidium Motschulsky (Coleoptera: Ptiliidae) with seventy seven new species Author Darby, Michael text European Journal of Taxonomy 2020 2020-04-02 622 1 188 journal article 22458 10.5852/ejt.2020.622 9cb3ea96-0ee4-40b4-8006-19b5fed80b46 3777282 9CD3B2CD-F072-4994-8CA9-24145D343401 Cissidium shibatai Sawada, 2008 Fig. 103 Material examined Paratypes JAPAN • 4 ♀♀ ; Ryukyus , Mt. Omotodake , Ishigaki Is. Okinawa Pref. ; 11 Apr. 1986 ; S. Nomura leg.; YS , BMNH • 1 ex. ; same locality as for preceding; 8 May 1998 ; Y.Sawada leg.; YS, BMNH • 1 ♀ ; same locality as for preceding; 2 Aug. 1999 , Y. Nishikawa leg.; YS • 1 ♀ ; Kanpire , Iriomote Is. , Okinawa Pref. ; 14 Apr. 1986 ; S.Nomura leg.; YS • 3 ♀♀ ; Toyokawa Iriomote Is. , Okinawa Pref. ; 16 May 1994 ; T. Hanatani leg.; YS , BMNH . Supplementary description The following description amplifies the type description of Sawada (2008) in order to conform with the entries in the present paper. SIZE. Habitus ( Fig. 103A ), length 0.75 mm . COLOUR. Reddish brown, antennae, legs and pubescence dusky yellow. HEAD. With a deep transverse depression behind the eyes. Distance across the eyes 0.23 mm ; antennomeres III–XI 0.33 mm long, III–IX 0.19 mm long, X–XI 0.14 mm long; mentum obscured. PRONOTUM. Length 0.22 mm , width 0.35 mm , sparsely pubescent, foveolate and with two distinct longitudinal foveae extending from basal margin at corners of the angulate emargination opposite the scutellum; side margins strongly angulate, almost straight to obtuse hind angles, bordered, the border continuing along the posterior margin ( Fig. 103B ). ELYTRA. Length 0.52 mm , width 0.46 mm , pubescence denser than on the pronotum. MESOVENTRITE. Median process of collar broad, short; mid-keel almost parallel sided slightly wider posteriorly, hind angles with carinae reaching to mesocoxal anterior borders, setose before junction with keel; keel narrow, parallel-sided becoming slightly wider posteriorly between the mesocoxae with ± three setae; mesoventral lateral borders serrate in posterior half; humeri strongly toothed ( Fig. 103C ). METAVENTRITE. Sparsely pubescent, length 0.16 mm , disc simple, distance across spines 0.12 mm ; mesocoxal posterior borders serrate. GENITALIA. Male aedeagus, as Fig. 6 Ia–b but beak bent to a right angle. Female spermatheca U-shaped as Fig. 6E . Remarks This is the only Japanese species in this group apart from C. nishikawai . It may be distinguished from that species by the much narrower pronotal base.