146. Xyleborus bidentatus (Motschulsky)

Phloeotrogus bidentatus Motschulsky, 1863: 514 .

Xyleborus bidentatus (Motschulsky): Eichhoff, 1878b: 505.

Xyleborus subcostatus Eichhoff, 1869: 281 . Synonymy: Hulcr & Cognato, 2013: 150.

Thai distribution: (unspecified province) (Eichhoff 1869 as Xyleborus subcostatus); S: Ranong (Murphy & Meepol 1990 as Progenius bidentatus). No more recent records from Thailand.

Other distribution: From India through Southeast Asia and Indonesia to New Guinea and the Pacific islands. Intercepted in Japan in timber imported from the region. Also recorded from EastAfrica and Madagascar. (4)

Biology: Murphy and Meepol (1990) suggest an association with mangroves in southern Thailand, as do Maiti and Saha (2004) in the Sundarbans and Andaman Islands, but overall the species is polyphagous (Schedl 1963). Beeson (1930 as Xyleborus riehli Eichhoff) describes the gallery system. Numbers caught in light traps in Ranong are related to rainfall by Murphy and Meepol (1990).

Illustrations: P (Hulcr 2013); D (Maiti & Saha 2004).