Ceresium elongatum elongatum Matsushita, 1933

Fig. 10

Ceresium elongatum Matsushita, 1933: 301. TL: Japan (Okinawa); TD: EMHU

Distribution.

Palaearctic Region: China (Hong Kong, Taiwan); Japan (Ryukyus) (Yiu 2009; Lin and Yang 2019; Danilevsky 2020).

Macau records.

Great Taipa, 13 May 2019, under light in ablution block, R Perissinotto & L Clennell; Coloane Village, 19 May 2019, among flowers of Psychotria serpens, R Perissinotto & L Clennell (IZCAS); [Guia Hill] St. Lazarus’ Parish, 1 Jun 2020 22:36, Kit Chang (https://www.inaturalist.org/observations/48249964); ibidem 2 Jun 2020, Benny Kuok (https://www.inaturalist.org/observations/48308902); [Coloane] St. Francis Xavier’s Parish, 16 May 2020 21:25, Kit Chang (https://www.inaturalist.org/observations/46100618); ibidem 24 May 2020 23:14, Kit Chang (https://www.inaturalist.org/observations/47149856).

Remarks.

This species varies in the range of 10-14 mm in total length and 2-3 mm in maximum width. In Macau, adults appear to be active mainly during late spring, in May-June, and like those of the other species in this genus they are promptly attracted to artificial light during night-time, but are also occasionally seen during the day, hidden, and possibly feeding inside thick inflorescences. In Hong Kong, the larval stages of this species are known to develop within the wood of Citrus spp. and Morus alba (Yiu 2009).