Cissidium mahleri, 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 : 85-86

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.3795588
persistent identifier	https://treatment.plazi.org/id/FCBA1166-5BB1-496E-B971-2DAB12C75938
taxon LSID	lsid:zoobank.org:act:FCBA1166-5BB1-496E-B971-2DAB12C75938
treatment provided by	Valdenar
scientific name	Cissidium mahleri
status	sp. nov.

Treatment

Cissidium mahleri View in CoL sp. nov.

urn:lsid:zoobank.org:act:FCBA1166-5BB1-496E-B971-2DAB12C75938

Fig. 54 View Fig

Etymology

Named after the collector V. Mahler.

Material examined

Holotype

SRI LANKA • ♀; Pidurutalagala ; 2480 m a.s.l.; 18 Dec. 1979; V. Mahler leg.; MMUE.

Description

SIZE. Habitus ( Fig. 54A View Fig ), length 0.61 mm.

COLOUR. Yellow.

HEAD. With a shallow median fovea between the eyes, width across eyes 0.18 mm; antennomeres missing; mentum and prementum obscured.

PRONOTUM. Length 0.14 mm, width 0.25 mm, densely pubescent and foveolate; sides rounded continuing almost parallel-sided to slightly acute hind angles, bordered, the border not continued along the basal margin, medial emargination opposite scutellum sinuous ( Fig. 54B View Fig ).

ELYTRA. Length 0.42 mm, width 0.34 mm; densely pubescent and foveolate as pronotum.

MESOVENTRITE. Median process of mesoventral collar broad, widening posteriorly; mid-keel short, widenend and effaced anteriorly creating two semi-circular depressions, hind angles rounded not reaching mesocoxal anterior borders, raised slightly before joining keel; keel with ± eight setae from concave foveolae, tapering to bluntly pointed termination posteriad to the interruption point of the mesocoxal margins; mesoventral lateral margins serrate posteriorly; humeri sloping posteriorly, barely toothed ( Fig. 54C View Fig ).

METAVENTRITE. Length 0.15 mm, setose, disc simple, width across spines 0.09 mm.

WINGS. Macropterous.

GENITALIA. Female spermatheca slightly pear-shaped.

Remarks

One of the only two species of Cissidium from Sri Lanka in this group. Distinguished from C. pilosellum sp. nov. by the shorter and broader median extension of the mesoventral collar.