Taxonomy

Ambrosiophilus Hulcr and Cognato, 2009: 21.

Diagnosis

1.95−4.5 mm long, stout to elongate (2.27−2.92 times as long as wide) with elytral apex rounded and entire. Ambrosiophilus can be recognized by the pronotum anterior margin typically without a carina or serrationspronotal disc punctateelytral declivity rounded and steep; antennal club types 3 and 4; scutellum flat, flush with elytramycangial tufts absent; and procoxae contiguous. Ambrosiophilus most closely resembles Ambrosiodmus and is distinguished by the pronotal disc and lateral areas punctate, never asperate, and lateral profiles of pronotal and elytral discs flat.

May be confused with

Ambrosiodmus

Distribution

Found in temperate and tropical Asia; two species are established in the United States (Gomez et al. 2018).

Gallery system

similar to Ambrosiodmus

Remarks

The species are believed to use the same basidiomycete white-rot fungus as Ambrosiodmus (Kasson et al. 2016, Li et al. 2017). Some species are mycocleptic (Hulcr and Cognato 2010b). The female starts its gallery close to galleries of other ambrosia beetles. The fungus established by the ‘host’ species grows in the galleries of Ambrosiophilus which consequently has no need to transport its own ambrosia fungus, and lacks mycangia (Hulcr and Cognato 2010b, Kasson et al. 2016).