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Callosobruchus chinensis

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Callosobruchus
  • Callosobruchus chinensis
Common name
Adzuki Beanseed Beetle

Description

Size: 2.2-3mm
Basic colour: Brownish to blackish
Pattern colour: Pale bands and patches of pubescence
Number of spots: Variable
Pronotoum: As basic colour/pattern
Leg colour: Orange, hind legs partly darkened

Major pest of stored legumes. Originally Asian, now cosmopolitan.

Biology

Status: Occasional and scattered records related to imported/stored pulses plus a few 'wild' records on umbellifers.
Habitat: Usually storage facilities, possibly outdoors nearby or on umbellifers
Host plant: Pulses/legumes
Overwintering: In storage facilities; unable to breed in the wild in Britain.
Food: Stored pulses/beans.

Distribution (may take a minute to appear)

Distribution Map

Bruchus rufipes

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Bruchus
  • Bruchus rufipes

Description

Size: 1.8-3.1mm
Basic colour: Blackish or brownish
Pattern colour: Pale patches of pubescence
Number of spots: Variable number/shape of patches.
Pronotoum: As basic colour/pattern
Leg colour: Front and middle pair orange, hind pair dark

Western Palaearctic.

Biology

Status: Widespread in the southern half of England; scattered in Wales.
Habitat: Various; natural and modified.
Host plant: Various Fabaceae
Overwintering: Unknown although there are occasional records of adults in winter.
Food: Larvae on host seeds; adults probably pollen-feeders.

Distribution (may take a minute to appear)

Distribution Map

Calomicrus circumfusus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Calomicrus
  • Calomicrus circumfusus

Description

Size: 3-4.5mm
Basic colour: Elytra yellow with black border.
Pattern colour: None
Number of spots: None
Pronotoum: Yellow with black band at the rear
Leg colour: Black

Biology

Status: Scattered and uncommon in southern England and Wales. Scarce (Notable A)
Habitat: Various
Host plant: Various Fabaceae, especially gorse Ulex europaeus and dwarf gorse U. minor.
Overwintering: Probably as larvae, pupating in April.
Food: Adults on foliage, larvae probably at roots.
Other notes: Unknown tachinid larva is an internal parasite.

Distribution (may take a minute to appear)

Distribution Map

Callosobruchus maculatus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Callosobruchus
  • Callosobruchus maculatus
Common name
Cowpea Seed Beetle

Description

Size: 2.7-3.8mm
Basic colour: Brownish to blackish
Pattern colour: Pale patches and bands of pubescence
Number of spots: Variable.
Pronotoum: As basic colour/pattern
Leg colour: Orange

Major storage pest of legumes, especially chick peas (Cicer arietinum). Orginated from Africa, now throughout the tropics, subtropics and parts of Europe.

Biology

Status: occasional scattered records since 1925 with imported/stored pulses.
Habitat: Storage facilities
Host plant: Stored legumes/pulses
Overwintering: In storage facilities
Food: Stored legumes/pulses

Distribution (may take a minute to appear)

Distribution Map

Bruchus pisorum

Size
3.4-4.5mm
Basic colour
Blackish or brownish
Pattern colour
White T-shaped pubescent patch and a pair of black spots on the pygidium. Other pale pubescent patches dorsally.
Leg colour
As basic colour
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