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

Trirachys sartus
[Photo © David Navrátil, click on the picture for 4K resolution]

Pachydissus sartus, a widely distributed Central Asian species, has been described from Samarkand (Uzbekistan) as Pachydissus sartus by Simon Martynovitsch Solsky in 1871 [✩]. This spectacular longhorn beetle is one of the most important insect pests of broadleaf 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.

In the detailed revision of the closely related Austrasian Austrasian genera Trirachys Hope, 1843, Aeolesthes Gahan, 1890 and Pseudaeolesthes Plavilstshikov, 1931, published by Francesco Vitali et al. in 2017 [❖], was the species included in the genus Trirachys Hope, 1841.

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, China, Iran, India, Kazakhstan, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, Uzbekistan

The depicted beetles were collected in Yangiqoʻrgʻon (Янгикурган/Yangikurgan) environs (Yangiqoʻrgʻon district, Namangan region, Uzbekistan) on May 12, 1994.

Collected by our friend Jiří Kadlec

Solsky S.M.:
Prémices d'une faune entomologique de la vallée de Zaravschan, dans l'Asie Centrale.
Horae Societatis Entomologicae Rossicae 8: 132-165, 1871. [download pdf icon]

Khan S.A., Bhatia S., Tripathi N.:
Entomological Investigation on Aeolesthes sarta (Solsky), a Major Pest on Walnut trees (Juglans regia L.) in Kashmir Valley.
Journal of Academia and Industrial Research 2 (6): 325-330, 2013. [download pdf icon]

Hayat U.:
City longhorn beetle (Aeolesthes sarta): A review of the species, its distribution, ecology, damage, prevention and control.
Journal of Forest Science 68 (6): 199-212, 2022. [download pdf icon]

Vitali F., Gouverneur X., Chemin G.:
Revision of the tribe Cerambycini: redefinition of the genera Trirachys Hope, 1843, Aeolesthes Gahan, 1890 and Pseudaeolesthes Plavilstshikov, 1931 (Coleoptera, Cerambycidae).
Les Cahiers Magellanes 26: 40-65, 2017. [download pdf icon]

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