|Phyllobius oblongus (Linnaeus,1758)|
|Our only member of the subgenus Nemoicus Dillwyn, this was formerly regarded as
a distinct genus eg by Joy but not by Fowler who included it with Phyllobius. Widely distributed and generally
common throught England and Wales and extending to west Perth in Scotland
(Morris). There is a single (older) record from further
north (Moray) on the NBN map (May, 2009). Fowler quotes the species as local from Scotland; Solway, Moray and probably
other districts. Joy states simple 'common' without regional qualification. Typical habitat is woodland, copses, wooded
parkland and hedgerows where the species is polyphagous on a range of trees including Crataegus (Hawthorn),
Malus (Apple etc), Salix (Willows) and Ulmus (Elm); Fowler quotes 'elms and apples' while joy states
that it was a pest of fruit trees. Despite the rported abundance of this weevil we have recorded it only once locally
(up to May 2009) when a female was beaten from Fagus (Beech) in Whippendel wood during May 2006, all the more
remarkable considering the amount of sampling we undertake. Adults occur during spring and early summer.
3.7-5.9mm (Morris) (Joy gives 4.5-5mm). An atypical Phyllobius; lacking metallic scales, somberly coloured and rather parallel sided it is unlikely to be recognised as such by the beginner, but distinctive enough to be identified from our photograph. Entire upper surface with some sparse semi-erect pale pubescence, that on the elytra longer. Head densely and strongly punctuerd but for a median area from the base to the top surface of the rostrum which is flat and shiny. Eyes strongly convex. Temples long and broadened to base which is the same width as the anterior edge of the pronotum. Rostrum quadrate or slightly transverse, scrobes straight; approaching front margin of eyes but generally obscured by pubescence. Antennae long and slender; scape a little longer than width of head across eyes, curved and only weakly broadened towards apex, segments 2 and 3 as long as 4-7 combined, 9-11 form a weak and pointed club. Pronotum narrow compared with elytra, strongly ( a liile more so than head) and densely punctured, discreetly so on disc becoming confluent towards sides. Sides curved, broadest at or a little behind middle, without borders. Elytra much broader at shoulders than pronotum, sides gently sinuate and broadest behind middle. Striae strongly punctured to apex, interstices flat and shiny, each with a row of very fine punctures. Legs pubescent, all femora toothed below. Front tibia in male with a strong hook inside at apex, this is much less developed in the female, Claws fused at base.
Typical colour is light brown elytra and appendages with head, pronotum and underside black, sometimes the elytral lateral margins are black (Fowler). Morris states the colour to be very variable.
Description from 1 Watford specimen at X20