Sybrinus albosignatus, an endemic species to the Arabian Peninsula, has been described from Aden environs (Yemen) by Stephan Breuning in 1950 [✩]. Larval development in Calotropis procera (Apocynaceae) [❖][✳], adults are nocturnal and can be attracted by light.

Body length:	5.5 - 8 mm
Life cycle:	1 year [?]
Adults in:	March - November (depends on region)
Host plant:	Calotropis procera (Apocynaceae)
Distribution:	an endemic species to the Arabian Peninsula (Saudi Arabia, Yemen)

The depicted mounted female was reared from larva found in Calotropis procera 5 km SE Hinayah village (Fayfa/جِبَالُ environs, Fayfa governorate, Jazan province, Saudi Arabia) on March 28, 2025.

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[✩]
Breuning S.:
Nouvelles formes de Lamiaires, (deuxième partie).
Bulletin du Musée Royal d'Histoire Naturelle de Belgique 24 (47): 1-47, 1948. [download ]

[❖]
Holzschuh C. and Téocchi P.:
Cerambycidae (Coleoptera) of Saudi Arabia: Part I, Lamiinae.
Fauna of Saudi Arabia 12 [1991]: 295-311, 1992. [download ]

[✳]
Rapuzzi P. and al Dhafer H.:
The Cerambycidae fauna of Saudi Arabia (Coleoptera).
Revue suisse de Zoologie 131 (1): 177-217, 2024. [download ]

Hájek J. and Kabátek P.:
Synonymical notes on the genus Sybrinus from Socotra Island (Coleoptera: Cerambycidae: Lamiinae).
Acta Entomologica Musei Nationalis Pragae 52 (supplementum 2): 365-372, 2012. [download ]