Ambrosiophilus nodulosus ( Eggers, 1941 ), 2017

Smith, Sarah M., Beaver, Roger A. & Cognato, Anthony I., 2017, The Ambrosia Beetle Ambrosiophilus peregrinus Smith and Cognato, Introduced to the USA, is Ambrosiophilus nodulosus (Eggers), New Combination (Coleoptera: Curculionidae: Scolytinae), The Coleopterists Bulletin 71 (3), pp. 552-553 : 552-553

Ambrosiophilus nodulosus ( Eggers, 1941) , new combination

Xyleborus nodulosus Eggers 1941: 233 .

Xyleborus pernodulus Schedl 1957: 85 . Unnecessary replacement name. Synonymy:

Browne 1961: 50.

Ambrosiodmus nodulosus (Eggers) : Wood and Bright 1992: 677.

Ambrosiophilus peregrinus Smith and Cognato 2015: 216 . New synonymy.

New Records. CHINA: Chongqing: Nan Shan, 20.viii.2015, Wang, J-G., Lv-Jia , Tian-Shang ( RAB, 4); Mt. Simian , 5.vi.2016, Tian-Shang, Lv-Jia ( RAB, 2); Pengshui, 11.viii.2016, Tian-Shang ( RAB, 2); Youyang, 14.v.2016, Tian-Shang ( RAB, 1) . Sichuan: Mt. Emei , 19.viii.2016, Tian-Shang ( RAB, 1) .

Remarks. The holotype of X. nodulosus (in ZFMK) and paratypes of A. peregrinus (in MSUC) were compared to each other and found to be identical. Xyleborus nodulosus is transferred to Ambrosiophilus Hulcr and Cognato because it exhibits the diagnostic characters of the genus: anterior margin of pronotum rounded; pronotal disc lacking asperities; lateral profile of pronotal disc flat; and elytral declivity steeply rounded. Smith and Cognato (2015) confirmed the placement of this species (as A. peregrinus ) in Ambrosiophilus with DNA sequence data for two genes, mitochondrial COI and ribosomal 28S.

In addition to the USA, A. nodulosus occurs in China (Chongquing, Fujian [type locality], Sichuan) and Indonesia (Kalimantan) ( Browne 1980).It was reported from imported timber in Japan, but no further records from Japan have been reported ( Ohno 1990). Little is known about the species in its native range.However, it was recorded from three genera of Dipterocarpaceae , Octomeles Miq. (Tetramelaceae) , and Pometia J.R. Forst. & G. Forst. (Sapindaceae) ( Browne 1980; Ohno 1990) and is presumably polyphagous.

This note underscores the importance of taxonomic research of large-scale regional faunas and its financial support. Creating comprehensive identification keys are not possible without funding for consolidating dispersed type material, production of images, and taxonomic expertise. We hope that our forthcoming key will aid the identification of future exotic introductions from Southeast Asia.