Heterarthrus fasciatus (Malaise, 1931)

Phyllotoma fasciata Malaise, 1931: 28-29. Holotype ♀, in NHRS (not examined). Type locality: Russia, Kamtchatka, Elisowo.

Heterarthrus fasciatus . Hara (2012): holotype of Phyllotoma fasciata examined, redescription, hosts, biology, first records from Japan.

Material examined.

Japan: Hokkaido: 1♀ (DEI-GISHym19669), Bibai, Koshunai, 43.29950N, 141.84940E, reared Populus suaveolens, 16.08.2010 (emergence date), leg. H. Hara (SDEI) .

Russia: Tuva Republic: 1♀ (DEI-GISHym83889), East Sayan Mountains, Black Irkut, river shingle and rocks, 1691m, 30.06.2012, leg. W.-H. Liebig (SDEI) .

Host plants and biology.

Published host plant records are Populus suaveolens Fisch. ex Poiteau & A. Vilm. (Hara 2012, Kirichenko et al. 2018) and P. nigra L. (Hara 2012). According to the images associated with the reared specimen from the Moscow Region (see below), Populus balsamifera L. is also a host. No males have yet been found. The cocoon remains within the leaf. Possibly multivoltine (Hara 2012).

Distribution.

The previously known distribution comprises Japan (Hokkaido: Hara 2012), Kamtchatka (Malaise 1931), and East Siberia (Buryat Republic: Sundukov 2017; Novosibirsk and Irkutsk Oblasts: Kirichenko et al. 2018). Heterarthrus fasciatus also occurs in European Russia, based on images by Andrej Ponomarev of a reared female. The specimen, misidentified as H. ochropoda, is illustrated on the website insecta .pro ( insecta .pro/), accessed on 27.03.2019: photos [adult] #68936-68938, [leaf-mines] #68930-68935. The photos are labelled [transliterated]: Moskovskaja obl., Orehovo-Zuevskij r-n, pos. Topolinyj, na topole, with date for one image of leaf-mine 04.07.2014.