Cissidium waginicum, 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 : 181-183

publication ID	https://doi.org/ 10.5852/ejt.2020.622
publication LSID	lsid:zoobank.org:pub:9CD3B2CD-F072-4994-8CA9-24145D343401
DOI	https://doi.org/10.5281/zenodo.3795720
persistent identifier	https://treatment.plazi.org/id/6DA410C3-BFCB-4D21-99B4-3CDC3D8B255E
taxon LSID	lsid:zoobank.org:act:6DA410C3-BFCB-4D21-99B4-3CDC3D8B255E
treatment provided by	Valdenar
scientific name	Cissidium waginicum
status	sp. nov.

Treatment

Cissidium waginicum View in CoL sp. nov.

urn:lsid:zoobank.org:act:6DA410C3-BFCB-4D21-99B4-3CDC3D8B255E

Fig. 114 View Fig

Etymology

Johnson ms name, after Wagina Island, where the specimen was collected.

Material examined

Holotype

SOLOMON ISLANDS • ♀; Choiseul, Wagina Is.; 25 May 1966; no. 23078; P. Greenslade leg.; BMNH.

Description

SIZE. Habitus ( Fig. 114A View Fig ), length 0.71 mm.

COLOUR. Yellow brown, pubescence antennae and legs dusky yellow.

HEAD. Width across eyes 0.22 mm; antennomeres III–XI length 0.38 mm, III–IX length 0.21 mm, X–XI length 0.17 mm.

PRONOTUM. 0.18 mm long, 0.31 mm wide; sparsely covered with large, shallow and irregular foveolae, base with a series of four foveae on each side, the two series separated by a distinct space opposite scutellum; lateral margins sharply angled, thence narrowed in a weakly concave line to somewhat effaced but obtusely angled front angles visible in dorsal view, rearwards concave to slightly acute hind angles; sides conspicuously bordered, the border continued along the entire length of the posterior margin, median emargination opposite the scutellum sinuous, barely visible ( Fig. 114B View Fig ).

ELYTRA. 0.60 mm long, 0.41 mm wide, basal third sparsely covered with rather large foveolae.

MESOVENTRITE. Median process of collar short, pointed; mid-keel wide, sides concave, anterior margin slightly wider than posterior which has well marked flat carinae joining the mesocoxal anterior margins, raised medially to a point before the keel; keel parallel-sided with rounded termination just past the interruption point of the mesocoxal borders; mesoventral lateral margins serrate; humeri toothed ( Fig. 114C View Fig ).

METAVENTRITE. Length 0.14 mm, disc simple, distance across spines 0.11 mm; posterior borders of mesocoxae serrate.

WINGS. Female apterous. Male unknown.

Remarks

Most likely to be confused with C. kolobangaricum sp. nov. in this group from the Solomon Islands, but distinguished by the wider mid-keel, and narrower pronotal base.