Aceraius helferi Kuwert, 1891

Bezděk, Aleš, Boucher, Stéphane, Hájek, Jiří & Cas, Biology Centre, 2017, Catalogue of type specimens of beetles (Coleoptera) deposited in the National Museum, Prague, Czech Republic, Acta Entomologica Musei Nationalis Pragae 57 (1), pp. 279-293 : 285

Aceraius helferi Kuwert, 1891

Acerajus helferi Kuwert, 1891: 163 .

Two syntypes are deposited in NMPC (ex coll. Nickerl).

SYNTYPE (unsexed specimen): ‘Passal. / Tenasser. [hw, not Kuwert, white label, red margin] // Kuwert / typ 96 [hw Nickerl, yellow label] // A. Helferi / Kuw. Typ. [hw Nickerl] // Nickerl [p] // TYPUS [p, red label, black margin] // helferi Kuw. / syntype revised [hw] / S. Boucher det. [p] 13 [hw]’.

SYNTYPE (unsexed specimen): ‘ Sikkim / Helferi Kuw. / typ 94 [hw Nickerl] // Nickerl [p] // TYPUS [p, red label, black margin] // helferi Kuw. / syntype revised [hw] / S. Boucher det. [p] 13 [hw]’.

Current status. Valid species.

Remark. The localities of these syntypes do not agree completely with the original type locality, which is ‘Tenasserim, Philippinen?’. Later on, KUWERT (1898b) indicated only ‘Tenasserim’. Indeed, the species is distributed from Tenasserim up to Indochina, but not in the Philippines. Specimens in NMPC belong to the same species as the ones in Kuwert’s collection. All of them have the length as given in the original description, and certainly they come from the same series as the specimen with a handwritten label ‘Helfer’ in Kuwert’s collection (see also remark under A. ceylonicus for explanation of the mislabelling of the specimens).