Trisetacus ehmanni Keifer, 1963

on Pinus

gall

the mites live in the sheaths at the base of the needles and also free on the needles. At higher densities this can result in chlorosis, twisting and shortening of the needles, and repeated attacks may lead to twisting of the branches.

hostplants

Pinaceae, monophagous

Pinus nigra, ponderosa, sylvestris.

notes

see the dscussion under T. pini.

references

Pye (2012a).

17/11/2014

mod 28.vii.2017