Cissidium bifoveolatum, 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 : 27-29

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.3795516

persistent identifier

https://treatment.plazi.org/id/793E71EC-48C7-4E7E-A407-98F783A8835D

taxon LSID

lsid:zoobank.org:act:793E71EC-48C7-4E7E-A407-98F783A8835D

treatment provided by

Valdenar

scientific name

Cissidium bifoveolatum
status

sp. nov.

Cissidium bifoveolatum View in CoL sp. nov.

urn:lsid:zoobank.org:act:793E71EC-48C7-4E7E-A407-98F783A8835D

Figs 5A View Fig , 17 View Fig

Etymology

Johnson ms name, presumably after the two large foveae on the pronotum.

Material examined

Holotype

MADAGASCAR • ♂; East, Baie d’Antongil , Ambohitsitondroina ; 500 m a.s.l.; roots of Asplenium ; Dec. 1959; J. Vadon leg.; identified as Camptodium by CJ; MMUE.

Paratypes

MADAGASCAR • 8 ex.; same collection data as for holotype; MMUE, BMNH .

Description

SIZE. Habitus ( Fig. 17A View Fig ), length 0.69 mm.

COLOUR. Yellow brown appearing polished, head darker, pubescence, legs and antennae paler. HEAD. With a shallow depression interrupted medially behind the eyes, width across eyes 0.21 mm; antennomeres III–XI length 0.35 mm, III–IX length 0.21 mm, X–XI length 0.14 mm, mentum and submentum as Fig. 4A View Fig , but with faint circular depressions.

PRONOTUM. Length 0.20 mm, width 0.27 mm, pubescence sparse, with four foveae in the posterior third the two medial ones much larger than the two close to the corners; side margins rounded then sinuate to rectangular hind angles, narrowly bordered, the border extending for a short distance along the posterior margin which has a sinuous emargination before the scutellum ( Fig. 17B View Fig ).

ELYTRA. Length 0.45 mm, width 0.38 mm, pubescence mainly confined to lateral margins.

MESOVENTRITE. Medial extension of collar narrow, short; mid-keel posterior and anterior corners of approximately same width, the posterior margin reaching anterior margin of the mesocoxal cavities, sharply raised medially to keel; keel narrow, parallel-sided, bearing ¾ setae, terminating between the mesocoxae ( Fig. 5A View Fig ); mesoventral lateral margins loosely serrate in posterior half; humeri strongly toothed ( Fig. 17C View Fig ).

METAVENTRITE. Length 0.14 mm, width across spines 0.09 mm, glabrous, disc plain. Posterior margins of mesocoxal cavities serrate.

WINGS. Macropterous.

GENITALIA. Female spermatheca globular. Male aedeagus as Fig. 6L View Fig but tip blunter.

Remarks

One of the five species of Cissidium recorded from Madagascar in this group, only likely to be confused with C. banari , but distinguished by its smaller size and longer pronotal pubescence.

MMUE

United Kingdom, Manchester, The University, Manchester Museum

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

MMUE

Museum of Manchester University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Ptiliidae

SubFamily

Ptiliinae

Tribe

Discheramocephalini

Genus

Cissidium

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