Monochamus (Monochamus) guttulatus Gressitt, 1951
[= Monohammus guttatus Blessig, 1873]

Subfamilia: LAMIINAE  /  Tribus: MONOCHAMINI
Monochamus guttulatus
[Photo © Kirill V. Makarov, click on the picture for 4K resolution]

Monochamus guttulatus, a North-East Asian species occuring in Russian Far East, North China and Korean peninsula, has been described from Ussuri region as Monohammus guttatus by Constantin Blessig in 1873 [▽]. The currently valid name Monochamus guttulatus (nomen novum) was firstly used in the monograph devoted to Chinese Cerambycids by Judson Linsley Gressit in 1951 [★].

M. guttulatus, inhabiting North-East Asian deciduous forest zone, is ecologically associated with many species of deciduous trees (e.g. Quercus, Acer, Prunus, Carpinus, Corylus, Ulmus, Salix, Alnus). Young adults feed on the bark of shoots of living deciduous trees (maturation feed). The beetles then mate, after which the females lay eggs in cavities (2-3 mm) made transversely on the bark surface of dying or dead trunks of the host trees. One egg is laid per cavity. Larvae hatch from the eggs after two-three weeks. Young larvae feed in/under bark, make longitudinal galleries filled compactly with fibrous frass. Before the second hibernation, late instar larvae bore into wood and plug the entry hole with coarse fibrous frass. They create then a longitudinal gallery in the sapwood finished by pupal cell where they pupate. A 1-2 mm layer of wood remains between the bark and pupal cell. Life cycle 2 years. Adults, active from June to August, can be found on the host trees [✧].

Body length:9 - 15 mm
Life cycle:2 years
Adults in:June - August
Host plant:polyphagous in decidous trees (Quercus, Acer, Prunus, Carpinus, Corylus, Ulmus, Salix, Alnus, etc.)
Distribution:Russian Far East, North China, Korean peninsula

The depicted male beetle (11 mm) was collected in forest at Kedrovaya (р. Кедровая) river (N43°05′57″ E131°33′10″; Kedrovaya Pad/Кедро́вая Падь Nature Reserve, 11 km SSE of Barabash, Khasansky district, South of Primorsky krai, Far Eastern Federal District, Russia) on July 29 - August 1, 2013.

Collected by I.Gomyranov and T.Galinskaya

Blessig C.:
Zur Kenntniss der Käferfauna Süd-Ost-Sibiriens insbesondere des Amur-Landes. Longicornia.
Horae Societatis Entomologicae Rossicae, St. Petersbourg 9 (3) [1872]: 193-260, 1873. [download pdf icon]

Gressitt J.L.:
Longicorn beetles of China.
Longicornia, Paris 2: 1-667, 1951.

Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 3 - Laminae Part I.
Amerind Publishing, New Delhi: 300pp [pages 155-161], 1990. [download pdf icon]

SubfamiliaLamiinae Latreille, 1825
TribusMonochamini Gistel, 1848
GenusMonochamus Dejean, 1821
SubgenusMonochamus Dejean, 1821
SpeciesMonochamus (Monochamus) guttulatus Gressitt, 1951