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 dewhurst sp. nov. urn:lsid:zoobank.org:act: A543DF10-FBBF-4AAE-878A-C53CAEA25316 Fig. 48 Etymology Named after the place of capture, noun in apposition. Material examined Holotype MALAYSIA • ♂ ; Sabah , Kinabatangan district , SE end of Dewhurst Bay ; 2 Jun.1950 ; air sweep in primary forest ; R.F. Inger and D.D.Davis leg.; FM( HD ) #50.33; FMNH . Specimen found damaged, part of the remaining antenna was lost in the SEM. Description SIZE. Habitus ( Fig. 48A ), length 0.71 mm . COLOUR. Dark brown, pubescence, antennae and legs paler. HEAD. Frons obscured; eyes very prominent, width across 0.23 mm ; antennomeres III–XI length 0.34 mm , III–IX length 0.18 mm , X–XI length 0.16 mm ; mentum obscured. PRONOTUM. Length 0.21 mm , width 0.30 mm , pubescent, setae confined mainly to lateral margins, with a pair of linear foveae at base; lateral margins rounded, slightly angled, hind angles rectangular, widely bordered, border extending narrowly onto the posterior margin which has a sinuous emargination in in front of the scutellum ( Fig. 48B ). ELYTRA. Length 0.43 mm , width 0.42 mm , pubescent, setae same length as pronotum, without foveolae. MESOVENTRITE. Medial extension of collar broad; mid-keel lateral margins almost parallel, posterior corners not joining mesocoxal borders, barely raised at junction with keel; keel foveolate throughout (perhaps indicating presence of setae which have been abraded) tapering to blunt termination between the mesocoxae; mesoventral lateral margins shallowly serrate in posterior third; humeri toothed ( Fig. 48C ). METAVENTRITE. Sparsely pubescent, with shallow medial depression, posterior margins of mesocoxal cavities not serrate. WINGS. Macropterous. GENITALIA. Male aedeagus as Fig. 6L . Female not known. Remarks The only species of Cissidium to have been described from Sabah .