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 itoi Sawada, 2008 Fig. 51 Material examined Paratypes JAPAN • 17 ex. ; Shikoku, Ashizuri, Cape Kohchi Pref.; 1–3 May 1997 ; T. Ito leg.; YS , BMNH . Supplementary description The following description amplifies the type description of Sawada (2008) to conform with the entries in the present paper. SIZE. Habitus ( Fig. 51A ), length 0.66 mm . COLOUR. Dark brown, antennae, legs and pubescence paler. HEAD. With a row of indistinctly formed foveolae between the eyes; width across eyes 0.20 mm ; antennomeres III–XI, length 0.27 mm , terminal antennomeres globular. PRONOTUM. Length 0.21 mm , width 0.29 mm , densely foveolate and pubescent throughout; side margins rounded to slightly concave before acute hind angles, border shallowly crenulate, not continued along the hind margin which has a shallow sinuous emargination in front of the scutellum ( Fig. 51B ). Fig. 51. Cissidium itoi Sawada, 2008 . A . Habitus. B . Pronotum, × 375. C . Mesoventrite showing median process of collar, mid keel, keel and lateral margin, × 590. ELYTRA. Length 0.41 mm , width 0.32 mm , pubescent but without foveolae. MESOVENTRITE. Median extension of collar short; mid-keel and keel united without extensions to the anterior mesocoxal borders, strongly setose and sculpted, terminating in a rounded point between the mesocoxae; humeri shallowly toothed; mesoventral lateral borders smoothly rounded without serrations ( Fig. 51C ). METAVENTRITE. Sparsely pubescent, length 0.11 mm , width across spines 0.10 mm , disc foveolate medially; mesocoxal posterior borders without serrations GENITALIA. Male aedeagus pointed, not beak-shaped in profile; female spermatheca elongate as Fig. 6D . Remarks This is one of three species in this group from Japan and differs from C. latum Sawada, 2008 in being narrower and from C. nomurai Sawada, 2008 in the form of the female spermatheca.