Cissidium semicalvum, Darby, 2020

Darby, Michael, 2020, A revision of Cissidium Motschulsky (Coleoptera: Ptiliidae) with seventy seven new species, European Journal of Taxonomy 622, pp. 1-188 : 18-19

Cissidium semicalvum sp. nov.

urn:lsid:zoobank.org:act:9769DC7C-6A25-4324-933E-6C310F16C20C

Fig. 12

Etymology

Johnson ms name, after the Latin adjective ‘ calvus ’, meaning ‘bald’.

Material examined

Holotype

MADAGASCAR • ♀; Montagne d’Ambre , Diego Suarez, Mont du Petit Lac forest; 1100–1800 m a.s.l.; 21 May 1969; H. Franz leg.; MM holotype; MMUE.

Description

SIZE. Habitus ( Fig. 12A ), length 0.80 mm.

COLOUR. Yellow brown, shining, head darker, pubescence, legs and antennae dusky yellow.

HEAD. Glabrous; width across eyes 0.23 mm; mentum obscured; antennomeres III–XI, length 0.41 mm, III–IX length 0.24 mm, X–XI length 0.17 mm.

PRONOTUM. 0.23 mm long, 0.31 mm wide, glabrous, with two large basal foveae slightly elongate in part, two additional smaller foveae at hind angles; lateral margins sharply angled then almost parallel to rectangular hind angles, anterior angles obtuse, bordered, the border running for a short distance along the posterior margin, posterior margin strongly sinuate with an emargination before the scutellum ( Fig. 12B ).

ELYTRA. Length 0.51 mm, width 0.45 mm, glabrous.

MESOVENTRITE. Medial extension of collar very short; mid-keel short, front angles effaced, hind angles wide, carinate continuing to outer edge of mesocoxae; keel with ± six setae, short, tapering to rounded termination at interruption of mesocoxal borders; mesoventral lateral margins evenly rounded, serrate in posterior half; humeri toothed ( Fig 12C ).

METAVENTRITE. Glabrous, length 0.17 mm, disc simple, width across spines 0.13 mm; posterior margin of mesocoxae serrate.

WINGS. Macropterous

GENITALIA. Female spermatheca globular. Males not known.

Figures

Fig. 12. Cissidium semicalvum sp. nov. A. Habitus. B. Pronotum, × 520. C. Mesoventrite showing median process of collar, mid-keel and keel, × 700.