[= Xylosteus caucasicola kadleci Miroshnikov, 2000]
Subfamilia: LEPTURINAE / Tribus: XYLOSTEINI
[Photo © Lech Kruszelnicki]
Xylosteus kadleci, a rare endemic species to North Turkey discovered by Stanislav Kadlec in Abant Gölü environs (Bolu Province, Turkey) in 1993, has been described by Alexandr Ivanovich Miroshnikov in 2000 [✧].
The beetle in the pictures were collected in type locality where it develops in firs (Abies). Dead stumps of smaller diameter is the preferred larval substrate. The species is nocturnal. An interesting experiment was performed by our colleague Ladislav Karaus. In Bolu (NE Turkey) he captured a female of this species and placed it into a wire cage. The cage was placed on top of a fir tree stump and covered by fresh fir branch. During the following night he inspected the trap several times and captured about 20 males that had been attracted to it. In our opinion this experiment implies that a female-released long range sexual pheromone is involved in this species' reproduction strategy. In general we believe that Lepturinae ovipositing and developing in rotten wood use long range sexual pheromones for the larval substrate is physiologically inactive and difficult to detect. On the other hand xylophagous longhorn beetles developing in recently dead wood can rely on volatile chemicals still emitted by the recently dead trees and consequently no long range sexual attractant is necessary as the beetles meet on the larval substrate.
Body length: 12 - 16 mm Life cycle: 2 - 3 years Adults in: April - June Host plant: polyphagous in coniferous and deciduous trees Distribution: an endemic species to North Turkey
Depicted beetles were collected in Abant Gölü environs (Bolu Province, Turkey).
[✧]
Miroshnikov A.I.:
New longicorn beetles of the tribe Xylosteini from Asia (Coleoptera, Cerambycidae)
Entomologica Kubanica, Krasnodar 1: 37-54, 2000. [download]
[Photo © Michal Hoskovec, Fuji Superia 400 35 mm film scan]
| Subfamilia | Lepturinae Latreille, 1802 |
| Tribus | Xylosteini Reitter, 1913 |
| Genus | Xylosteus Frivaldsky, 1838 |
| Species | Xylosteus kadleci Miroshnikov, 2000 |