Charidotis nucleata Boheman, 1855

Sekerka, Lukáš, 2016, Taxonomic and nomenclatural changes in Cassidinae (Coleoptera: Chrysomelidae), Acta Entomologica Musei Nationalis Pragae 56 (1), pp. 275-344 : 292

publication ID	https://doi.org/ 10.5281/zenodo.5305725
publication LSID	lsid:zoobank.org:pub:E24F1028-C6AC-4323-9ED5-C9B7FF3434ACD
DOI	https://doi.org/10.5281/zenodo.6449983
persistent identifier	https://treatment.plazi.org/id/677FCF20-FFCB-FFE0-FE6E-FF3AFF09FC18
treatment provided by	Marcus
scientific name	Charidotis nucleata Boheman, 1855
status

Treatment

Charidotis nucleata Boheman, 1855 View in CoL

Charidotis nucleata Boheman, 1855: 18 View in CoL (original description).

Charidotis orbifera Boheman, 1855: 14 View in CoL (original description), syn. nov.

Type localities. Charidotis nucleata : ‘Brasilia’; C. orbifera : ‘Brasilia ad flumen Amazonis’.

Type material examined. Charidotis nucleata : SYNTYPE: 1 spec., pinned, ‘ Para [w, hw, s] || Bhn. [w, p, s] || Type. [w, p, s] || NHRS-JLKB | 000021815 [w, p, cb]’ ( NHRS). 1 spec., pinned, ‘ Para [w, hw, s] || Baly Coll. | 1905—54. [w, p, cb] || Charidotis | orbifera | Boh | Amazons [w, hw by Baly, cb] || Type Boh | Col Jekel [hw by Baly on underside of the preceding label]’ ( BMNH).

Charidotis orbifera : HOLOTYPE: pinned, ‘Amazo | na [w, hw, s] || Jekel [w, hw, s] || Type. [w, p, s] || NHRS-JLKB | 000021818 [w, p, cb]’ ( NHRS).

Remarks. BOHEMAN (1855) described C. nucleata and C. orbifera in the same publication and separated them based on colouration and size. Both taxa have a black ring on elytra, becoming brownish or reddish towards their centre. Boheman described the colouration of C. orbifera as being darker, almost black, only with a ferruginous tip of scutellum, while in C. nucleata it has a distinct brownish-red inner ring. I have studied and compared types of both taxa and could not find reasonable characters to separate the two taxa besides colouration. The shape of clypeus, ratio of antennomeres and punctation of elytra are identical and I hereby synonymize the two taxa. As both were described in the same publication I followed the Principle of the first reviser ( ICZN 1999: Article 24.2) and chose C. nucleata as the valid name for this species as it appears to be always correctly applied and historic material identified in museums agrees with the type.

Distribution. Brazil: Pará ( SPAETH 1936, BOROWIEC 2002) and Rio de Janeiro ( FLINTE et al. 2009).