Rhynchites caeruleus (DeGeer, 1775)

apple twig cutter

on woody Rosaceae

parasite

The female deposits eech egg in a wound that she has bitten in the tip of a young shoot; next, the shoot is cut off a few cm below the egg. The larva develops in the pith of the fallen shoot. Once full grown it leaves and pupates in the soil.

host plants

Rosaceae, oligophagous

Crataegus; Cydonia; Malus; Mespilus; Prunus; Pyrus; Rosal Sorbus.

phenology

Univoltine; hibernation as imago.

distribution within Europe

(PESI, 2019).

synonyms

Rhynchites coeruleus; Teretriorhynchites caeruleus.

references

Dieckmann (1974a), Legalov (2009a), Rheinheimer & Hassler (2010a), Roskam (2009a).

mod 3.iv.2019