Pyrrhalta viburni (Paykull, 1799)

Taxonomy: Polyphaga > Chrysomeloidea > Chrysomelidae > Pyrrhalta > Pyrrhalta viburni

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Pyrrhalta viburni

Description

Size: 4.5-6.5mm
Basic colour: Yellow-brown, sometimes elytra with a reddish-brown tinge.
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour, only slightly wider than the head (which distinguishes it from Galerucella spp.)
Leg colour: As basic colour

Palaearctic (ssp. annulicornis in Japan); introduced into Canada.

Biology

Status: Fairly common in England, sparse in Wales and Ireland, one old record from Scotland.
Habitat: Various
Host plant: Viburnum spp.
Overwintering: As eggs in cavities chewed into stems of host plants and covered by a hard, dried cap of mucus and faeces or regurgitated food.
Food: Adults and larvae both on stems and leaves.
Other notes: Predated by several species of pentatomid shieldbug; eggs predated by the ant Myrmica sabuleti and damaged by the mite Thyreophagus entomophagus. Adults eaten by coal tit and bullfinch. Eggs parasitised by severl hymenopteran species. Adults infected (fatally) by the fungus Beauveria bassiana.

Articles

Alexander, K.N.A. (2011). The distribution and status of Pyrrhalta viburni (Paykull) (Chrysomelidae) in Scotland. The Coleopterist 20(2): 96.

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