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 pinense sp. nov. urn:lsid:zoobank.org:act: 7AAC3F0E-C71E-4988-8916-B9C5A59C0B36 Fig. 39 Etymology Johnson ms name, after the place of collection. Material examined Holotype NEW CALEDONIA • ♀ ; Pic du Pin ; H. Franz leg.; MMUE . Description SIZE. Habitus ( Fig. 39A ), length 0.73 mm . COLOUR. Dark red brown, antennae, legs and pubescence dusky yellow. HEAD. With a very shallow linear depression between the eyes, width across eyes 0.23 mm ; antennomeres III–XI length 0.45 mm , III–IX length 0.26 mm , X–XI length 0.19 mm ; mentum tapering towards base but not as pronounced as Fig. 4F. PRONOTUM. Fig. 39B , length 0.21 mm , width 0.31 mm , sparsely pubescent, six foveae across base the central four equally spaced, larger than the outside pair; lateral margins rounded anteriorly almost parallel-sided in basal half, hind angles slightly acute, bordered, the border not continued along the hind margin; median emargination opposite scutellum present only as a slight insinuation. ELYTRA. Length 0.48 mm , width 0.42 mm sparsely pubescent and shallowly foveolate contrasting with the pronotum. MESOVENTRITE. Collar with a long tapering median extension; mid-keel parallel-sided the front angles rounded before reaching the collar creating two converging depressions, hind angles with short carinae not reaching the mesocoxal anterior borders, strongly raised before keel to form a blunt projection; keel with ± three setae, broad, flat, tapering to a rounded termination between the mesocoxae; mesoventral lateral margins serrate in posterior half; humeri sloping posteriorly, barely toothed ( Fig. 39C ). Fig. 39. Cissidium pinense sp. nov. A . Habitus. B . Pronotum, × 445. C . Mesoventrite showing median process of collar, mid-keel and keel, × 600. METAVENTRITE. Sparsely pubescent, disc simple, length 0.15 mm width between spines 0.14 mm , spines narrow, sharply pointed; margins of mesocoxal cavities not serrate. WINGS. Apterous. GENITALIA. Female spermatheca globular. Males not known. Remarks See remarks for C. amieuense sp. nov. On mesoventral characters, this species is only likely to be confused with C. houailou sp. nov. , but the keel differs in being wider and more tapering.