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 crowsoni Johnson, 1982 Fig. 20 Material examined NEW ZEALAND • 1 ex. ; Northland , Waipoua forest station ; 120 m a.s.l. ; 10–11 Dec. 1983 ; Kauri forest litter ; P.M. Hammond leg.; BMNH • 1 ex. ; Auckland , Waitakere Range , Cascades Kauri Park ; 8 Jan. 1984 ; wet litter by stream ; P.M. Hammond leg.; BMNH • 1 ex. ; Waikato : Hakarimata ; ca 100– 300 m a.s.l. ; 20 Nov. 1983 ; native forest litter ; P.M. Hammond leg.; BMNH • 3 ex. ; Hapuakohe Range , Maungakawa ; 500 m a.s.l. ; 3 Jan. 1984 ; Nikau leaf bases on ground ; P.M. Hammond leg.; BMNH . Supplementary description The description below concentrates in particular on amplifying Johnson’s description with more details of the meso- and metaventral characters in order to conform with the present paper. SIZE . Habitus ( Fig. 20 A ), length 0.78 mm . COLOUR. Dusky yellow. HEAD . With a shallow linear depression and short medial longitudinal depression between the eyes, width across eyes 0.21 mm ; antennomeres III–XI length 0.39 mm , III–IX 0.23 mm , X–XI length 0.16 mm globular; mentum and prementum as Fig.4 A . PRONOTUM. Length 0.20mm , width 0.30 mm , widest along the posterior margin, pubescent, with a row of eight foveae along the base, the outer two on each side smaller than the inner four; lateral margins evenly rounded anteriorly and slightly concave posteriorly before the acute hind angles, bordered, the border continuing for a short distance along the posterior margin which has a sinuous emargination before the scutellum ( Fig. 20 B ). ELYTRA. Length 0.53 mm , width 0.43 mm , pubescent, foveolate. MESOVENTRITE. Medial extension of collar widening posteriorly; mid-keel short with concave sides, posterior corners with narrow carinae to mesocoxal anterior margins, raised sharply to keel base; keel with ± two setae, narrow, tapering to termination between the mesocoxae; mesoventral lateral margins serrate in posterior half; humeri strongly toothed ( Fig. 20 C ). METAVENTRITE. Length 0.19 mm , width across spines 0.14 mm ; posterior margins of mesocoxal cavities not serrate. WINGS . Micropterous. GENITALIA. Male aedeagus as Fig. 6 Fa–b. Female spermatheca globular. Remarks Described by Johnson on the basis of a single female from New Zealand , North Island, Northland , Parahaki, Whangerei, mixed leaf litter, 8. xi.1956 , leg. R.A. Crowson (NZAC). Distinguished from C. foveolatum Johnson, 1982 , the only other Cissidium reported from New Zealand , by the smaller foveae on the basal margin of the pronotum.