Truncaudum agnatum (Eggers)

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 : 60-61

127. Truncaudum agnatum (Eggers)

Xyleborus agnatus Eggers, 1923: 197 .

Truncaudum agnatum (Eggers) : Hulcr & Cognato, 2010: 25.

Thai distribution: (unspecified southern province) ( Sittichaya et al. 2012); S: Nakhon Sri Thammarat.

New records: Nakhon Sri Thammarat, Khao Luang NP, headquarters, 08° 22' 21.6'' N, 99° 44' 14.7'' E, 196 m, EtOH trap, 12.ii., 1.iv.2010 (W. Sittichaya) (2); Namtok Yong NP, 8° 10.434' N, 99° 44.508' E, 80 m, pan trap, 26–27.vii., 27–28.vii., 30–31.vii., 6–7.ix.2008 (U-prai, K.) (9) .

Other distribution: From West Malaysia and Sumatera through Indonesia and the Philippines to New Guinea, Australia, Solomon Is. and Micronesia. Frequently intercepted in Japan in timber imported from the region. The species of Truncaudum Hulcr & Cognato have a distribution which is centred in New Guinea and neighbouring islands ( Hulcr & Cognato 2010a), and T.agnatum has probably spread westwards across Wallace’s line. (3)

Biology: Polyphagous ( Browne 1961 a, Ohno 1990). The species is not size-selective, and will attack newly sawn timber as well as logs. The gallery system has a few branches, usually in the transverse plane, and at least one brood chamber in the longitudinal plane ( Browne 1961a).

Illustrations: P (Hulcr 2013); D ( Nunberg 1978 as Xyleborus agnatus ).