Wallacellus piceus (Motschulsky)

Beaver, R. A., Sittichaya, W. & Liu, L-Y., 2014, A Synopsis of the Scolytine Ambrosia Beetles of Thailand (Coleoptera: Curculionidae: Scolytinae), Zootaxa 3875 (1), pp. 1-82 : 61

129. Wallacellus piceus (Motschulsky) *

Anodius piceus Motschulsky, 1863: 512 .

Wallacellus piceus (Motschulsky) : Hulcr & Cognato, 2010: 29.

Thai distribution: N: Chiang Mai, Phetchabun; S: Nakhon Sri Thammarat. New to Thailand.

New records: Chiang Mai, Doi Chiangdao NP, Pha Tang substation, 19° 24.978' N, 98° 54.886' E, 526 m, MT, 14–21.viii.2007 (S. Jugsu, A. Watwanich) (1); Doi Chiang Dao WS, Nature trail, 19° 24.278' N, 98° 55.311' E, 491 m, pan trap, 5–6.x.2007 (Songkran & Apichart) (1); Doi Chiang Dao, 13.vii.2002 (A. Cognato) (3); Nakhon Sri Thammarat, Namtok Yong NP, 8° 10.434' N, 99° 44.508' E, 80 m, MT,8–15.vii.,15–22.vii., 2–29.vii.2008 (Uprai, K.) (6); as previous except: pan trap, 11–12.vii., 27–28.vii.2008 (7); Phetchabun, Khao Kho NP, office, 16° 39.55' N, 101° 8.123' E, pan trap, 12.vii.2006 (S. Chatchumnan & S. Singtong) (1)

Other distribution: The species has a very wide distribution in the Oriental and Australasian regions, extending from India in the West to the Pacific islands in the East, and from Korea in the North to Australia in the South. It also occurs in the Afrotropical region and the Seychelles. (6)

Biology: Polyphagous ( Browne 1961a, Schedl 1963). The gallery system branches in three dimensions and may penetrate deeply into the wood. It has no brood chambers ( Browne 1961a). The species has some potential as a pest because of its deeply-penetrating galleries and very wide host range ( Browne 1961a, Schedl 1963).

Illustrations: P (Hulcr 2013, Hulcr & Cognato 2013, PaDIL 2014 as Euwallacea piceus ); D ( Maiti & Saha 2004 as E. piceus ).