Cissidium mindanao, 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 : 88-89

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.3795586
persistent identifier	https://treatment.plazi.org/id/05800208-5A5F-48D0-AC96-2616B8A34B4B
taxon LSID	lsid:zoobank.org:act:05800208-5A5F-48D0-AC96-2616B8A34B4B
treatment provided by	Valdenar
scientific name	Cissidium mindanao
status	sp. nov.

Treatment

Cissidium mindanao View in CoL sp. nov.

urn:lsid:zoobank.org:act:05800208-5A5F-48D0-AC96-2616B8A34B4B

Figs 6N View Fig , 56 View Fig

Etymology

Named after Mindanao, the second largest island in the Philippines where the specimen was collected. Noun in apposition.

Material examined

Holotype

PHILIPPINES • ♂; Mindanao, E slope of Mt McKinley , Davao Prov.; 3300 ft a.s.l.; 28 Aug. 1946; flight dusk; Werner leg.; FMNH.

Description

SIZE. Habitus ( Fig. 56A View Fig ), length 0.67 mm.

COLOUR. Dark brown, pubescence, legs and antennae dusky yellow. HEAD. Densely setose; antennomeres III–XI length 0.37 mm, III–IX length 0.20 mm, X–XI length 0.17 mm; width across eyes 0.22 mm; mentum parallel-sided, otherwise obscured.

PRONOTUM. Length 0.21 mm, width 0.30 mm, densely pubescent and foveolate, without foveae along basal margin; sides sharply angled, concave to rectangular hind angles slightly concave to obtuse front angles, bordered, the border continuing along the entire posterior margin including the sinuous emargination in front of the scutellum ( Fig. 56B View Fig ).

ELYTRA. Length 0.49 mm, width 0.40 mm, pubescent without distinct foveolae markedly contrasting with the pronotum.

MESOVENTRITE. Median process of mesoventral collar narrow, parallel-sided; mid-keel anterior angles joining collar, posterior angles not reaching mesocoxal anterior borders, raised medially at junction with keel; keel with ± eight setae, parallel-sided, with rounded termination at the interruption of the mesocoxal borders; mesoventral lateral margins angled below humeri, serrate posteriorly; humeri toothed ( Fig. 56C View Fig ).

METAVENTRITE. Length 0.18 mm, setose, disc simple, width across spines 0.11 mm.

WINGS. Macropterous.

GENITALIA. Male aedeagus ( Fig. 6N View Fig ). Female not known.

Remarks

One of the only two species of Cissidium in this group from the Philippines. Distinguished from C. werneri sp. nov. by the more densely foveolate pronotum.