Heterarthrus fasciatus (Malaise, 1931)

Liston, Andrew, Mutanen, Marko & Viitasaari, Matti, 2019, On the taxonomy of Heterarthrus (Hymenoptera, Tenthredinidae), with a review of the West Palaearctic species, Journal of Hymenoptera Research 72, pp. 83-126 : 93

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.