Magdalis cerasi (Linnaeus, 1758)     Notable B
An 'English' species; widespread though very local throughout the south and the midlands, apparently absent from the west country and with only a single Welsh record (east Carmarthenshire). According to Fowler the species was 'not uncommon' in the London district. Typical habitat is wooded margins, wooded pasture and hedges where the species is polyphagous, developing on various species of Rosaceae; the larvae feed under the bark of branches and twigs of hawthorn, Apple, Pear, Blackthorn and Sorbus etc. Damage is moderate and the weevil has never been classed as a pest. In Britain also, or maybe predominately, on various oaks (Morris). Adults occur from early May to June or July. Included in our Watford list from several specimens sept from Betula growing in an area of mixed broadleaved trees in Whippendell Wood (09/05/09).

2.4-4.2mm (Morris,2002) but larger or smaller specimens occasionally occur. Entirely black, appears dull due to strong puncturation and microsculpture. Head dull; microsculpture strong and without puncturation (X20). Eyes convex, discontinuous with outline of head. Rostrum closely punctured, constricted behind antennal insertions in male, scrobes not visible from above. Antennae inserted in front of middle, scape stout and curved at apical thickening, funiculus 7 segmented with basal segment large, club long and pointed; longer than funiculus in male, shorter than funiculus in female. Pronotum transverse and convex, side margin smooth, constricted behind front angles and sinuate behind acute hind angles. Hind margin strongly bisinuate. Puncturation strong and close but not confluent, surface with a smooth longitudinal line towards front margin. Elytra parallel or nearly so, basal margin curved and raised, apical margins separately curved. Each with ten well impressed and punctured striae. Interstices wider than striae; flat and transversely rugose. Femora relatively long, each with a small ventral tooth although these may occasionally be missing (described by Fowler as 'more or less obsolete'). All tibiae with a strong inwardly curved tooth at apex, in our specimens these are testaceous. Claws proportionally very small, curved and with a tooth near middle.

Description from 2 Watford specimens at X20/40


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