Monochamus alternatus alternatus Hope, 1842

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

Monochamus alternatus alternatus Hope, 1842

Fig. 44

Monohammus alternatus Hope, 1842: 61. TL: China (Zhejiang); TD: OXUM

Monohammus tesserula White, 1858: 408. TL: China (Hong Kong): TD: NHMUK

Distribution.

Palaearctic Region: China (Anhui, Beijing, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hong Kong, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang); South Korea ( Yiu 2009; Lin and Yang 2019; Danilevsky 2020). Oriental Region: Laos; Vietnam ( Akbulut et al. 2017).

Macau records.

1♀, Coloane, 19 Apr 2001, CM Chan, Monochamus alternatus Hope ♀ (CIAM); 1♂, ibidem 25 Apr 2001, CM Chan, Monochamus alternatus Hope ♂ (CIAM); 1♂, ibidem 26 Apr 2001, CM Chan, Monochamus alternatus Hope ♂ (CIAM); Coloane Heights, A-Mà statue, 22 May 2020, R Perissinotto; ibidem 30 May 2020, dead under spot-light, R Perissinotto & L Clennell (IZCAS); St. Francis Xavier’s Parish [Coloane], 24 May 2020 22:52, Kit Chang (https://www.inaturalist.org/observations/47149824); ibidem 24 May 2020 9:13, Kisu Wong (https://www.inaturalist.org/observations/542858480).

Remarks.

In Macau, adults are active mainly at night and only in late spring; they range in total length 18-21 mm and 6-7.5 mm in maximum width. In Hong Kong, larvae reportedly bore into Pinus massoniana and carry the pine-wood nematode Bursaphelenchus xilophilus , which is a pest of pine plantations ( Yiu 2009). Other larval food plants include Abies firma , A. holophylla , Cedrus deodara , C. libani , Cryptomeria japonica , Juniperus sp., J. chinensis , Larix sp., Larix gmelinii , Malus asiatica , M. pumila , Morinda umbellata , Picea sp., P. excelsa , P. morinda , Pinus armandii , P. banksiana , P. densiflora , P. elliottii , P. khasya , P. koraiensis , P. luchuensis , P. massoniana , P. rigida , P. strobus , P. taeda , P. thunbergii , P. yunnanensis and Quercus sp. ( Lim et al. 2014; Lin and Yang 2019).

Figures

Figure 44. Monochamus alternatus alternatus Hope, 1842: dorsal (A) and lateral (B) views of specimens observed on the Coloane Heights on 22 May 2020 and on 24 May 2020, respectively (photographs: A LC B Kisu Wong).