Neocoenorrhinus pauxillus (Germar, 1824)

apple leaf cutter

Neocoenorrhinus pauxillus on Malus domestica

Malus domestica, Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel: oviposition scar in the leaf base

Neocoenorrhinus pauxillus on Malus domestica

withered fallen leaves

Neocoenorrhinus pauxillus on Malus domestica

mines

Neocoenorrhinus pauxillus on Malus domestica

occupied mines, lighted from behind

Neocoenorrhinus pauxillus on Malus domestica

the larvae complete their development in the complete withered leaf

Neocoenorrhinus pauxillus: larva in the mine

larva: the fresh frass is in thread segments!

mine

The egg is deposited in the base of the midrib. After oviposition the female severes the petiole, causing the petiole to break. The leaf start to wilt and falls, but still remains green for a considerable time. The larva tunnels in the midrib, and makes from there broad, full deep blotches in the lamina. Frass dispersed in the mine. Often several larvae in a leaf. Pupation in the ground. Blommers & Vaal (2002a) and Gønget (2003a) describe the biology in more detail.

host plants

Rosaceae, oligophagous

Amelanchier lamarckii; Cotoneaster integerrimus, tomentosus; Crataegus laevigata, monogyna; Cydonia oblonga; Malus domestica; Prunus armeniaca, domestica; Pyrus communis.

phenology

Larvae in the first half of June (Dieckmann, 1974a).

BENELUX

BE observed (Curuculionidae.be, 2010).

NE observed (Fauna Europaea, 2007; Heijerman, 1993a).

LUX not observed (Fauna Europaea, 2007).

distribution within Europe

Almost entire Europe; not in Ireland (Fauna Europaea, 2007).

synonyms

Neocoenorrhinidius, Coenorhinus, Caenorhinus, Merhynchites, Rhynchites pauxillus.

notes

Sometimes an orchard pest, especially on apple (Gønget, 2003a).

references

Behne (981a), Blommers & Vaal (2002a), Dieckmann (1974a), Gønget (2003a), Heijerman (1993a), Hering (1957a), Rheinheimer & Hassler (2010a), Robbins (1991a), Scherf (1964a), Vorst (2010a).

mod 2.iv.2019