Pogonocherus hispidulus (Piller & Mitterpacher, 1783)
POLYPHAGA Emery, 1886
CHRYSOMELOIDEA Latreille, 1802
LAMIINAE Latreille, 1825
POGONOCHERINI Mulsant, 1839
Pogonocherus Dejean, 1821
Locally common from lowlands to lower mountain altitudes and generally distributed throughout Europe from Portugal to Greece and Asia Minor in the south and north to the UK, Denmark and southern provinces of Sweden and Norway, it occurs on most of the Mediterranean islands, to the east it reaches the Urals and there are records from North Africa. In the UK it is generally common across southern and central England and Wales and rather less so further north to the Scottish Highlands and in Northern Ireland. The species is associated with a wide range of trees and shrubs in almost any situation; usually in broadleaf woodland and wooded parkland but also on heaths, wasteland and domestic gardens etc. Hosts include alder buckthorn (Frangula Mill.), alder (Alnus Mill.), birch (Betula L.), willows (Salix L.), hazel (Corylus L.), apple (Malus Mill.), Hornbeam (Carpinus L.), oak (Quercus L.), holly (Ilex L.), spindle (Euonymus L.), shadbush (Amelanchier Medik), Viburnum L., beech (Fagus L.), hawthorn (Crataegus Tourn.), Elder (Sambucus L.), walnut (Juglans L.), mistletoes (Viscum L.), and much less often and usually in Northern Europe on various conifers including larch (Larix Mill.) and pine (Pinus L.). Adults are present year-round; they are active from March until September and peak in abundance during May and June. Mating occurs in spring and early summer and females oviposit among bark on weakened or recently dead small branches or twigs, usually up to 2 cm in diameter. Larvae develop under bark producing long and often branched galleries in the xylem, they overwinter and complete their development through the following year and pupate in from July although exceptionally they may complete their development in a single summer. Adults are fully formed by late summer; most will remain in their pupal chambers to overwinter and emerge in the spring but many will emerge and become active in late summer or autumn, producing a peak during September or October. These late adults may overwinter under bark but they are sometimes recorded from litter beneath host trees and shrubs. Adults may be beaten or swept from foliage through the warmer months but early in the year, from January, they may be found at night on trunks and fence posts etc., sometimes in numbers.
6.0-7.5 mm. Very distinctive among our fauna and only likely to be confused with other members of the genus. Head, pronotum and apical half of elytra patterned with black, grey and brown pubescence, scutellum with a median strip of pale pubescence, elytra grey across the base then with a transverse white band across the basal half which may include indistinct patches of pale grey hairs, antennae and legs grey with patches or rings of paler pubescence. Head hypognathous, roughly punctured throughout, with long and narrow eyes that curve around the antennal tubercles, vertex and temples smoothly convex, frons and clypeus longitudinally impressed. Antennae dark with the base of segments 3-11 reddish and covered with pale pubescence. Pronotum transverse, widest across median lateral tubercles and narrowed to almost straight apical and basal margins, surface rather flattened across the base and apex and with a strong tubercle either side of the disc. Elytra tapering from widely-rounded shoulders to truncate apical margins, the outer angles sharply toothed and the inner angles with a smaller blunt tooth, surface raised across the base and with three or four tufts of dark pubescence behind the middle. Legs short and robust. Femora clavate and unarmed, tibiae gradually broadened from the base and weakly curved. Tarsi pseudotetramerous, second and third segments bilobed and fourth segment mostly hidden.