Eutaenia tanoni Breuning, 1962

Lin, Mei-Ying, Perissinotto, Renzo & Clennell, Lynette, 2021, Census of the longhorn beetles (Coleoptera, Cerambycidae and Vesperidae) of the Macau SAR, China, ZooKeys 1049, pp. 79-161 : 79

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.).

Figures

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).