Cissidium bomjesus, 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 : 141-142

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.3795712
persistent identifier	https://treatment.plazi.org/id/82221C1C-A852-4E0B-99FF-B24A65B2040A
taxon LSID	lsid:zoobank.org:act:82221C1C-A852-4E0B-99FF-B24A65B2040A
treatment provided by	Valdenar
scientific name	Cissidium bomjesus
status	sp. nov.

Treatment

Cissidium bomjesus View in CoL sp. nov.

urn:lsid:zoobank.org:act:82221C1C-A852-4E0B-99FF-B24A65B2040A

Fig. 89 View Fig

Etymology

Named after the place of capture, noun in apposition.

Material examined

Holotype

BRAZIL • ♂; Bom Jesus ; 28°40′ E, 50°12′ S; 1200 m a.s.l.; Dec. 1962; F. Plaumann leg.; FMNH.

GoogleMaps

Description

SIZE. Habitus ( Fig. 89A View Fig ), length 0.68 mm.

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

HEAD. Linear depression behind the eyes with a row of foveolae, width across eyes 0.20 mm; antennomeres III–XI length 0.33 mm, III–IX length 0.24 mm, X–XI length 0.11 mm globular; mentum as Fig. 4D. View Fig

PRONOTUM. Length 0.21 mm, width 0.28 mm, without either foveae or foveolae; lateral margins ± sharply angled then concave to rectangular hind angles, bordered, the border not extending along the posterior margin which has an emargination opposite the scutellum ( Fig. 89B View Fig ).

ELYTRA. Length 0.44 mm, width 0.37 mm, pubescent, setae same length as those on pronotum.

MESOVENTRITE. Medial extension of collar broad; mid-keel widest anteriorly then tapering posteriorly before rising sharply to junction with keel, posterior corners reaching anterior margin of mesocoxal borders; keel without setae, almost parallel to a rounded tip at midpoint of the mesocoxae; mesoventral

lateral margins not serrate, almost rectangular before meeting mesocoxal borders; humeri bluntly toothed ( Fig. 89C View Fig ).

METAVENTRITE. Length 0.15 mm, width across spines 0.09 mm, with sparse pubescence medially, disc simple; posterior margins of mesocoxal cavities serrate.

WINGS. Macropterous.

GENITALIA. Male aedeagus as Fig. 6 View Fig Fa–b. Females not known.

Remarks

One of the five Brazilian species in this group. Only likely to be confused with C. reitteri ( Matthews, 1889) but distinguished by the less angulate pronotal sides and the narrower and longer mid-keel.