Eumecocera impustulata, a species of North Asian deciduous and mixed forests known from Russia, North-East China, Japan, and Korea,
has been described from "Siberia Orientalis" as Saperda impustulata by Victor Ivanovitsch Motschulsky in 1860 [▽][✮].
E. impustulata larvae develop in weakened living twigs and branches of many deciduous trees species.
Larvae feed subcortically, creating longitudinal galleries filled with fine frass. In thin-barked twigs, galleries are deeply impressed in the sapwood,
but not in thick-barked branches. Last instar larvae enter the sapwood and there in its upper layer create a short gallery finished by pupal cell with frass-filled entrance hole.
Life cycle 2 years. Adults, active in June and July (Russia), can be found on the leaves and shoots of the host trees [❖].
| Body length: | 9 - 14 mm |
| Life cycle: | 2 years |
| Adults in: | June - July |
| Host plant: | broadly polyphagous in deciduous trees (Prunus maackii, Salix, Quercus, Sorbus, Tilia,
Acer tegmentosum, Prunus armeniaca, Juglans mandshurica, Corylus, Carpinus, Alnus japonica, Syringa vulgaris etc.) |
| Distribution: | Russia (Siberia, Far East), North-East China, Japan and Korea |
Depicted male beetle was collected in Tachingousa bay (Просёлочная) environs (Japan Sea coast, Lazovsky district, Primorsky Krai, Far Eastern Federal district, Russia) on July 2-5, 2010.
Collected by Maxim E. Smirnov
[▽]
Motschulsky V.I.:
Coléoptères rapportés de la Sibérie orientale et notamment des pays situées sur les bords du fleuve Amour par M.M. Schrenk, Maak, Ditmar, Voznessenski etc. déterminés et décrits par V. de Motschulsky.
In: Dr. Leopold von Schrenk's, «Reisen und Forschungen im Amur-Lande», Saint-Petersbourg 2 (2) (Coleopteren): 77-257, 1860.
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[✮]
Lazarev M.A.:
Таксоны жуков-усачей (Coleoptera, Cerambycidae) видовой группы, описанные В.И. Мочульским, и их типы.
[ Species group taxa of Longhorned beetles (Coleoptera, Cerambycidae) described by V.I. Motschulsky and their types. ]
Humanity space International Almanac 8 (1): 6-70, 2019.
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[❖]
Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 3 - Laminae Part III.
Oxonian Press, New Delhi: 395pp [pages 138-144], 1991.
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