Trirachys sartus (Solsky, 1871)
[= Pachydissus sartus (Solsky, 1871)]
[= Aeolesthes (Aeolesthes) sarta (Solsky, 1871)]

Trirachys sartus
[Photo © Maxim E. Smirnov]

This spectacular longhorn beetle is one of the most important insect pests of trees in Central Asia. It can frequently be found in avenues or parks in highly urbanised areas. Adults usually leave their pupation cells in April or the beginning of May and are crepuscular and nocturnal. During the daytime, they hide under the bark, in larval galleries, and in other refuges. They leave the hideout at dusk, males appearing first, and move about until morning on the surface of the particular tree on which they developed. T. sartus does not fly much and maturation feeding has not been observed.

Body length:20 - 52 mm
Life cycle:2 and more years
Adults in:May - July
Host plant:polyphagous in deciduous trees (Acer, Betula, Elaeagnus, Fraxinus, Gleditsia, Juglans, Malus, Morus, Platanus, Populus, Prunus, Pyrus, Quercus, Robinia, Salix, Ulmus)
Distribution:Afghanistan, India (Western Himalayas), Iran, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, Uzbekistan

The depicted male beetle (38 mm) was collected in Tashkent city (Uzbekistan) on July 20, 1998.

SubfamiliaCerambycinae Latreille, 1802
TribusCerambycini Latreille, 1804
GenusTrirachys Hope, 1841
SpeciesTrirachys sartus (Solsky, 1871)