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 subangulatum sp. nov. urn:lsid:zoobank.org:act: ED371CB6-DA3D-4967-B89B-96B19C80A15E Fig. 105 Etymology Johnson ms name. Material examined Holotype PANAMA • ♀ ; W of Finca Palo Santo , nr Nueva California , Chirique Prov. ; 9 Mar. 1959 ; Berlese floor litter in damp ravine ; 4900 ft a.s.l. ; H.S. Dybas leg.; FMNH . Description SIZE. Habitus ( Fig. 105A ), length 0.64 mm . COLOUR. Dark brown, pubescence, legs and antennae brown. HEAD. With a shallow foveolate linear depression behind the eyes, width across eyes 0.17 mm ; mentum as Fig. 4A ; antennomeres III–XI, length 0.29 mm , III–IX length 0.13 mm , X–XI length 0.16 mm . [one antenna missing]. PRONOTUM. 0.17 mm long, 0.25 mm wide, pubescent without either foveolae or foveae; lateral margins sharply angled, strongly rounded to anterior angles, concave to acute posterior angles, strongly bordered, the border not continuing along the posterior margin, posterior medial emargination opposite the scutellum clearly marked ( Fig. 105B ). ELYTRA. 0.41 mm long, 0.34 mm wide, pubescent as pronotum. MESOVENTRITE. Medial extension of collar onto the mid-keel tapering then parallel-sided terminating in a fringe of setae which fan out across the mid-keel; mid-keel with concave sides, the anterior margin slightly wider than the posterior, hind angles rounded stopping well short of the mesocoxal anterior borders and marked by some shallow radiating depressions in the mesoventrite; keel, long, narrow, parallel-sided and with ± fourteen setae terminating close to base of mesocoxae; mesoventral lateral margins sinuous then effaced before joining mesocoxae, without serrations; humeri toothed ( Fig. 105C ). Fig. 105. Cissidium subangulatum sp. nov. A . Habitus. B . Pronotum, × 585. C . Mesoventrite showing median process of collar, mid-keel and keel, × 1380. METAVENTRITE. Sparsely pubescent, length 0.13 mm , disc simple, width across spines 0.12 mm ; posterior margin of mesocoxae not serrate. WINGS. Macropterous. GENITALIA. Female spermatheca globular. Males not known. Remarks The only species of Cissidium from Panama in this category.