Census of the longhorn beetles (Coleoptera, Cerambycidae and Vesperidae) of the Macau SAR, China Author Lin, Mei-Ying Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 - 5 Beichen West Road, Chaoyang Dist., Beijing, 100101, China Author Perissinotto, Renzo Institute for Coastal & Marine Research (CMR), Nelson Mandela University, P. O. Box 77000, Gqeberha 6031, South Africa renzo.perissinotto@mandela.ac.za Author Clennell, Lynette Macau Anglican College, 109 - 117 Avenida Padre Tomas Pereira, Taipa, Macau SAR, China text ZooKeys 2021 2021-07-22 1049 79 161 http://dx.doi.org/10.3897/zookeys.1049.65558 journal article http://dx.doi.org/10.3897/zookeys.1049.65558 1313-2970-1049-79 5D5EC2F0E9854C6EB55B5AD879C78A16 2DD0CB1DF6045A1DA8B1DDF6163DC76F Eutaenia tanoni Breuning, 1962 Fig. 43 Eutaenia tanoni Breuning 1962a :18. TL: Laos; TD: BPBM Distribution. Palaearctic Region: China (Guangxi) ( Huang et al. 2002 ). Oriental Region: Laos ( Breuning 1962a ; Rondon and Breuning 1970 ). Macau records. Coloane, Cheoc Van, on coastal vegetation, 18 May 2019, R Perissinotto & L Clennell (IZCAS); ibidem 19 May 2020, R Perissinotto & L Clennell; ibidem 22 May 2020, R Perissinotto & L Clennell (MACT); Coloane, Aldeia Road, 16 May 2020 17:55, Annie Lao (https://www.inaturalist.org/observations/46079399). Remarks. Since this species was originally described on the basis of a single specimen, Rondon and Breuning (1970) suggested that it may have represented a natural hybrid between the more common and widely distributed Eutaenia trifasciella (White, 1850) and E. corbetti Gahan, 1893. It differs from the closely related E. trifasciella from Hong Kong mainly by having the apical four antennomeres with basal parts lightly testaceous rather than completely black and the black marking on pronotum extending to both anterior and posterior margins, instead of forming only a middle transverse black stripe. In Macau, adults are active only in late spring and range in total length 20.5-23 mm and 6-7 mm in maximum width. They are strictly diurnal and feed on the bark of coastal shrubs (RP & LC pers. obs.). Figure 43. Eutaenia tanoni Breuning 1962: dorsal ( A ) and lateral ( B ) views of specimens observed along the Coloane coast on 19 May 2020 (photographs: LC).