Discomorpha (Discomorpha) bohemanii ( Guérin-Méneville, 1855 ) Sekerka, 2016

Sekerka, Lukáš, 2016, Taxonomic and nomenclatural changes in Cassidinae (Coleoptera: Chrysomelidae), Acta Entomologica Musei Nationalis Pragae 56 (1), pp. 275-344 : 337

Discomorpha (Discomorpha) bohemanii ( Guérin-Méneville, 1855) comb. nov.

Dolichotoma Bohemanii Guérin-Méneville, 1855: 602 (original description).

Oxynodera heikertingeri Spaeth, 1920: 144 (original description), syn. nov.

Type localities. Dolichotoma bohemanii : Ecuador, Napo Province, Quijos Canton [quoted according to the label data]; Oxynodera heikertingeri : ‘ Ecuador: Macas’.

Type material examined. Dolichotoma bohemanii : SYNTYPE: ♂, pinned: ‘Type [w, p, s, c, rf] || Discomorpha | Bohemanii | Guer. Oscula | (type) Quixos [w, hw by Guérin, s]’ ( BMNH).

Oxynodera heikertingeri : HOLOTYPE: ♂, pinned, ‘ Macas | O. Ecuat. [g, hw, cb] || Reineck d. [w, hw, cb] || heikertingeri [hw] | m. Typ. unic. ♂ [hw] | Spaeth det. [w, p, cb] || TYPUS [r, p, cb] || M/CR MUS | SPAETH COLL. [w, p, cb] || Manchester Museum | SYNTYPE [b, p, cb]’ ( MMUE).

Remarks. Dolichotoma bohemanii remained an enigmatic taxon to subsequent workers of Cassidinae since its description. I have found a single specimen in the BMNH which possesses the original label handwritten by Guérin and in my opinion it is part of the type series. GUÉRIN- MÉNEVILLE (1855) did not state how many specimens he had at his disposal nor mentioned type locality. There is ‘Quixos’ written on the label what refers to the river Quijos and surrounding canton of the same name, in the Province of Napo in Ecuador. Gaetano Osculati travelled through the canton from June to November 1847 and visited numerous places from small settlements to principal villages (e.g. Baeza and Cosanga) ( OSCULATI 1854) but it is not possible to determine where exactly he collected the specimen. I specify the type locality as Quijos Canton according to the label data.

The syntype has simply marginate elytra and thus belong to Discomorpha Chevrolat, 1836 not to Cyclosoma , which has doubly marginate elytra. Discomorpha bohemanii is characterized by uniformly black dorsum with dark metallic blue lustre, stout body and nearly semicircular pronotum. These characters are identical to Oxynodera heikertingeri described from Macas and thus I synonymize it with D. bohemanii .

GEMMINGER & HAROLD (1876) listed Ega (= Tefé in Amazonas, Brazil) as distribution of D. bohemanii and the information was repeated. However, it is most likely result of an error because D. bohemanii is restricted to eastern slopes of the Andes in Ecuador.

Distribution. Ecuador: Morona-Santiago ( SPAETH 1920) and Napo ( BOROWIEC 1998a).