Crioceris asparagi

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Crioceris
  • Crioceris asparagi
Common name
Asparagus Beetle

Description

Size: 5.0-6.5mm
Basic colour: Blue-black, reddish and yellow
Pattern colour: Elytra yellow with a dark blue central band and three transverse stripes.
Number of spots: None, though the elytral banding effectively leaves three yellow spots per elytron.
Pronotoum: Reddish, often with a dark spot.
Leg colour: Dark blue-black; tibiae usually reddish at base.

Biology

Status: Widespread and locally common, especially in the south-east.
Habitat: Anywhere with wild or (more usually) cultivated asparagus
Host plant: Asparagus officinalis
Overwintering: 2nd generation adults hibernate in old asparagus stems, or under dead leaves or bark.
Food: Adults and larvae feed on leaves and stems of asparagus.
Other notes: Considered a pest of garden and commercial asparagus. The continental C. duodecimpunctata has been found in Britain but is not established; it is orange-yellow with 6 black spots on each elytron.

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Distribution Map

Aphthona nonstriata

Size
2.6-2.8mm
Basic colour
Bright metallic blue, sometimes dark green or dark brassy/bronze, rarely almost black.
Pattern colour
None
Leg colour
Mostly as basic colour, hing femora red-brown to dark brown, sometimes darker apically.

Aphthona nonstriata

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Aphthona
  • Aphthona nonstriata

Description

Size: 2.6-2.8mm
Basic colour: Bright metallic blue, sometimes dark green or dark brassy/bronze, rarely almost black.
Pattern colour: None
Number of spots: None
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: Mostly as basic colour, hing femora red-brown to dark brown, sometimes darker apically.

Biology

Status: Common and widespread.
Habitat: Various near water
Host plant: Yellow iris (Iris pseudacorus)
Overwintering: Adults hibernate in tussocks and moss.
Food: Adults eat long narrow strips from iris leaves, larvae are iris leaf miners.
Other notes: The largest British Aphthona. Underside dark brown. Antennae dark brown except for segments 2-3 (sometimes 1-4) which are yellowish. Frontal ridge of the head (running vertically between the antennal bases) wide and flat.

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Clytra quadripunctata

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Clytra
  • Clytra quadripunctata

Description

Size: 7.4-9.5mm
Basic colour: Black and yellowish-red
Pattern colour: 2 black spots on each yellowish-red elytron; the rear spot larger and may appear to be formed of two fused spots.
Number of spots: 2 on each elytron
Other colour forms: Rare
Pronotoum: Black
Leg colour: Black
Confusion species: Clytra laeviuscula

Biology

Status: May have declined, but no current designation as Rare or Scarce.
Habitat: Associated with various ant species; in woodlands, hedges, sometimes on commons.
Host plant: Various trees and shrubs, cock's-foot and bracken.
Overwintering: Adults collected April to December. Larvae pupate attached to plant debris in ant nests.
Food: Adults feed on new shoots and leaves of trees and shrubs; larvae feed on plant debris within ant nests.
Other notes: Pronotum, body and legs all black. Head black with red spots behind the eyes. A minor colour variant has more a yellowish background colour to the elytra. Separated from C. laeviuscula (considered extinct in Britain) by having pronotal side margins flattened/broad and clearly punctured (not smooth and narrow as in C. laeviuscula).

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Lilioceris lilii

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Lilioceris
  • Lilioceris lilii
Common name
Lily Beetle

Description

Size: 6-8mm
Basic colour: Head legs and body black, pronotum and elytra red.
Pattern colour: None
Number of spots: None
Pronotoum: Red
Leg colour: Black

First recorded in Britain in 1839, expanded its range especially since the 1980s. Widely regarded as a garden pest. See the Lily Beetle Survey here.

Biology

Status: Widespread south and east, spreading west and north.
Habitat: Gardens and plant nurseries.
Host plant: Various Liliaceae, especially Lilium and Fritillaria.
Overwintering: As adults in sheltered places e.g. soil, not necessarily near food plants.
Food: Liliaceae leaves; once leaves are consumed, late-instar larvae may consume remaining buds, flowers and seed capsules.
Other notes: Eggs 1mm long and orange-red. Larvae orange with black heads, though usually covered with their own slimy black excrement; 8-10mm long when fully grown. Pupation occurs in the soil.

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