Cissidium latum Sawada, 2008

Darby, Michael, 2020, A revision of Cissidium Motschulsky (Coleoptera: Ptiliidae) with seventy seven new species, European Journal of Taxonomy 622, pp. 1-188 : 82-83

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.3795584
persistent identifier	https://treatment.plazi.org/id/039987A1-3843-FF9C-2B28-FC88FCBCFE20
treatment provided by	Valdenar
scientific name	Cissidium latum Sawada, 2008
status

Treatment

Cissidium latum Sawada, 2008 View in CoL

Fig. 52 View Fig

Material examined

Paratypes

JAPAN • 1 ♂; Okinawa, Ryukyu, Gaji rindo, NE of Mt Terukubi; 290 m a.s.l.; 21 Oct. 1987; Y. Nishikawa leg.; BMNH • 1 ♂; Hiji, Kunigami-son , Okinawa Pref.; 12 Apr. 1997; Y. Sawada leg.; YS .

Supplementary description

The following description amplifies the type description of Sawada (2008) to conform with the entries in the present paper.

SIZE. Habitus ( Fig. 52A View Fig ), length 0.76 mm.

COLOUR. Reddish brown to dark brown, antennae, legs and pubescence paler.

HEAD. With a transverse row of indistinctly formed foveolae between the eyes.

PRONOTUM. Length 0.21 mm, width 0.37 mm, densely pubescent and very shallowly foveolate throughout; side margins rounded to concave before rectangular hind angles, narrowly bordered, the border continuing along the entire posterior margin, which is without an emargination opposite the scutellum ( Fig. 52B View Fig ).

ELYTRA. Length 0.47 mm, width 0.42 mm, pubescent more widely distributed than pronotum.

MESOVENTRITE. Collar with 3 projecting setae along the posterior margin opposite the mid-keel, median extension widest anteriorly then slightly tapering posteriorly, with very short setae; mid-keel strongly sculpted and pubescent, widest medially; keel long, pointed, terminating past the mid-point of the mesocoxae; lateral margins very shallowly rounded, without serrations; humeri toothed ( Fig. 52C View Fig ).

METAVENTRITE. 0.15 mm long, reticulate towards lateral margins, sparsely pubescent, disc simple, distance between spines 0.10 mm; mesocoxal posterior borders serrate.

GENITALIA. Male aedeagus as Fig. 6 View Fig Fa–b but beak not so strongly bent.

Remarks

This is one of three species in this group from Japan and differs from them and from all other Japanese Cissidium in having wider and more rounded elytra.