Taxonomic history

Xyleborus cristatus Hagedorn, 1908: 377.

Xyleborus fabricii Schedl, 1964c: 217. Unnecessary replacement name.

Anisandrus cristatus (Hagedorn): Smith et al. 2020b: 88.

Synonyms

Xyleborus cristatus Hagedorn, 1908: 377.

Xyleborus fabricii Schedl, 1964c: 217. Unnecessary replacement name.

Diagnosis

3.35–3.7 mm long (mean = 3.55 mm; n = 5); 2.2–2.47 times as long as wide. This species can be distinguished by the mesonotal mycangial tuft the length of the scutellum; elytral disc with or without a weak transverse saddle-like depression; posterolateral margin costate to interstriae 5; declivity appearing bisulcate, moderately impressed from striae 1−2, interstriae 3 moderately inflated, tuberculate from base to apical quarter then becoming flattened and unarmed to apex; and large sized sharp incurved spine on interstriae 2 at base of declivity on interstriae 2.

This species strongly resembles Anisandrus apicalis and A. n. sp. 8 and is most easily distinguished by the larger size, more strongly impressed declivital sulci than A. apicalis and larger spines on interstriae 3 that are sharply pointed and backwardly hooked and subequal in size to the spine at the summit of interstriae 2.

May be confused with

Anisandrus apicalis, A. congruens, A. geminatus, A. niger, and A. sinivali

Distribution

Bhutan, China (Yunnan), India (Meghalaya, ‘Naga Hills’, Sikkim, West Bengal), Laos, Myanmar, Nepal, Thailand, Vietnam

Host plants

recorded from Alnus (Betulaceae), Quercus (Fagaceae), Symplocos (Symplocaceae) (Beeson 1930)

DNA data

Sequences available for COI and CAD.

COI: MN619841

CAD: MN620134