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 orami sp. nov. urn:lsid:zoobank.org:act: FB3A63B0-4A4B-4AE9-B1FF-613DAB219E74 Fig. 99 Etymology I have pleasure in naming this species after my colleague Dr David Oram. Material examined Holotype BRAZIL • ♀ ; Tainhas , R[io] G[rande] do Sul; Apr. 1959 ; F. Plaumann leg.; FMNH . Paratypes BRAZIL • 5 ♀♀ ; same collection data as for holotype; one mounted verso; MMUE , BMNH . Description SIZE. Habitus ( Fig. 99A ), length 0.92 mm . COLOUR. Dark yellow brown, shining, antennae, legs and pubescence yellow. HEAD. Linear depression behind the eyes with a small median interruption, width across eyes 0.24 mm ; antennomeres III–XI length 0.44 mm , III–IX length 0.21 mm , X–XI length 0.23 mm ; mentum as Fig. 4B. PRONOTUM. Length 0.24 mm , width 0.35 mm , sparsely pubescent, shallowly foveolate at base, without foveae; sides sharply angled, concave to acute hind angles, straight to rounded front angles, strongly bordered the border not continuing along the posterior margin, emargination opposite scutellum with sinuous angles ( Fig. 99B ). ELYTRA. Length 0.59 mm , width 0.45 mm , pubescence a little denser than pronotum. MESOVENTRITE. Collar with a short broad median extension; mid-keel short, widest anteriorly, the angles joining with the collar to form two irregular depressions, the hind angles not reaching the mesocoxal anterior borders, raised medially with a strongly sculpted extension bearing ± eight setae; keel narrow, parallel-sided with rounded termination between the mesocoxae; mesoventral lateral margins with rounded convex extrusion at the posterior angle, without serrations; humeri sharply toothed ( Fig. 99C ). Fig. 99. Cissidium orami sp. nov. A . Habitus. B . Pronotum, × 550. C . Mesoventrite showing median process of collar, mid-keel and keel, × 660. METAVENTRITE. Length 0.17 mm , disc simple, width between spines 0.11 mm ; margins of mesocoxal borders serrate. WINGS. Macropterous. GENITALIA. Female spermatheca globular slightly distorted. Remarks One of the five Brazilian species in this group. Distinguished by the bulbous angle of the mesoventral lateral margins.