Acalolepta (Dihammus) longicornis keyensis Breuning,1965

Vitali, Francesco, 2024, Taxonomic notes about some Indo-Australian Lamiini (Coleoptera Cerambycidae), Faunitaxys 12 (43), pp. 1-11 : 4

Acalolepta (Dihammus) longicornis keyensis Breuning,1965

( Fig.6)

Examined material

- Acalolepta australis keyensis “ PARATYPE ”, 1 ♂, Key Insel, in RBINS ;

- 1 ♂, 1 ♀, Indonesia, Moluccas, Kei , IV-2005, ex coll. R. Dolhem, in CFV ;

- 1 ♀, ditto, V-2009, ex coll. A. Azarov, in CFV ; 3♂♂, Kei Besar, III-2019, A. Hayan leg., in CFV .

Remarks. – Breuning (1965) described this subspecies based on a single male preserved in the Museum für Naturkunde, Berlin. Consequently, despite the label, the “ paratype ” preserved in the RBINS is not a type, as Cools (1993) claimed.

Vitali (2018) recognized this taxon, which was originally described as a subspecies of A. australis (Boisduval, 1835) , as a subspecies of A. longicornis (Thomson 1857) . The opportunity to collect additional material has allowed expanding the knowledge of this subspecies by the description of the female, the size variability of the male and, for the first time, a photograph of this species.

Description. – Male. Body size: 36-43 mm (holotype 30 mm); antennae up three times as long as body.

Female. Body size: 35 -40 mm. Similar to the male, it differs in typical sexual characters: antennae up twice as long as body, apex of antennomere VI barely reaching the elytral apex, last antennomere a bit longer than the penultimate, elytra parallel-sided and forelegs not developed in length.

This subspecies differs from the nominotypical A. longicornis in the grey or yellowish (ochreous in longicornis ), fine and nearly uniform elytral pubescence, which does not form detectable bands. It looks the natural link to the following subspecies.