Rhopaloscelis unifasciatus Blessig, 1873

Subfamilia: LAMIINAE  /  Tribus: DESMIPHORINI
Rhaphuma diminuta diminuta
[Photo © Kirill V. Makarov, click on the picture for 4K resolution]

Rhopaloscelis unifasciatus, an East-Palaearctic species occuring in Russia, China, Mongolia, Japan, Kazakhstan and Korea, was described by Constantin Blessig from Russian far East in 1873 [❖]. R. unifasciatus is a broadly polyphagous beetle, whose larvae develop in the twigs/shoots of various deciduous trees and shrubs, but prefers Salix, Morus, Acer, Aralia and Ulmus. The larvae feed subcortically creating longitudinal, often densely arranged galleries filled with frass. The life cycle two years. Adults, active from May to July, conduct their maturation feeding on the young and thin twigs or branches of host trees/shrubs [✧].

Body length:6 - 9 mm
Life cycle:2 years
Adults in:May - July
Host plant:polyphagous in deciduous trees and shrubs
Distribution:Russia (Siberia, Far East), China, Mongolia, Japan, Kazakhstan, Korea

The depicted beetles were collected: ♂ (7.8 mm) in abandoned settlement Zastava Dokuchayeva (Застава Докучаева) environs (N44°30′34″ E146°09′29″; ca 45 m a.s.l., Kunashir/Кунаши́р island, Kuril Islands, Yuzhno-Kurilsky district, Sakhalin region, Russia) on August 3, 2013; ♀ (8.0 mm) at Listvennichnaya (Лиственничная) river above mouth of Kamenystyi (Каменистый) creek (N43°34′37″ E131°20′51″; ca 480 m a.s.l, Borisovskoye Plateau, South of Primorsky krai, Far Eastern Federal District, Russia) on May 29, 2019.

Collected by Kirill V. Makarov and Artem Zaitsev

Blessig C.:
Zur Kenntniss der Käferfauna Süd-Ost-Sibiriens insbesondere des Amur-Landes. Longicornia.
Horae Societatis Entomologicae Rossicae, St. Petersbourg 9 (3) [1872]: 193-260, 1873. [download pdf icon]

Karpiński L., Szczepański W.T., Plewa R., Walczak M., Hilszczański J., Kruszelnicki L., Łoś K., Jaworski T., Bidas M., Tarwacki G.:
New data on the distribution, biology and ecology of the longhorn beetles from the area of South and East Kazakhstan (Coleoptera, Cerambycidae)
ZooKeys 805: 59–126 (2018) [download pdf icon]

SubfamiliaLamiinae Latreille, 1825
TribusDesmiphorini Thomson, 1860
GenusRhopaloscelis Blessig, 1873
SpeciesRhopaloscelis unifasciatus Blessig, 1873