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Chrysolina varians

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Chrysolina
  • Chrysolina varians

Description

Size: 4.5-6.0mm
Basic colour: Metallic blue, purple, green, brassy, bronze or almost black.
Pattern colour: None
Number of spots: None
Other colour forms: Common
Pronotoum: As basic colour
Leg colour: As basic colour

Biology

Status: Widespread but patchy
Habitat: Various
Host plant: St. John's-worts (Hypericum)
Overwintering: Adults hibernate in moss.
Food: Leaves of host plants.
Other notes: Elytra with dense, random punctures.

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Distribution Map

Prasocuris phellandrii

Size
5-6mm
Basic colour
Metallic green, blue or brassy, with yellow or reddish stripes.
Pattern colour
Pronotum with yellow or reddish margins; elytra also with yellow or reddish margins plus a longitudinal band of the same colour along interstices 3 & 4.
Leg colour
Black and yellow or reddish

Prasocuris phellandrii

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Prasocuris
  • Prasocuris phellandrii

Description

Size: 5-6mm
Basic colour: Metallic green, blue or brassy, with yellow or reddish stripes.
Pattern colour: Pronotum with yellow or reddish margins; elytra also with yellow or reddish margins plus a longitudinal band of the same colour along interstices 3 & 4.
Number of spots: None
Other colour forms: Sometimes
Pronotoum: See 'pattern colour' above.
Leg colour: Black and yellow or reddish

Biology

Status: Widely distributed.
Habitat: Various wet habitats
Host plant: Various but primarily Marsh-marigold (Caltha palustris)
Overwintering: Adults overwinter from mid September to March.
Food: Leaves of host plants.

Distribution (may take a minute to appear)

Distribution Map

Prasocuris junci

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Prasocuris
  • Prasocuris junci
Common name
Brooklime Leaf Beetle

Description

Size: 4-5mm
Basic colour: Dark metallic blue (rarely green)
Pattern colour: None
Number of spots: None
Other colour forms: Rare
Pronotoum: As basic colour
Leg colour: As basic colour

Biology

Status: Widespread and locally common.
Habitat: Various
Host plant: Various, but the main hosts are Brooklime (Veronica beccabunga) and Water-speedwells
Overwintering: Adults overwinter though location unknown.
Food: Leaves of host plants.
Other notes: Elytral striae finely punctured.

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Distribution Map

Hydrothassa marginella

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Hydrothassa
  • Hydrothassa marginella

Description

Size: 3.4-4.5mm
Basic colour: Dark metallic blue and orange-yellow
Pattern colour: Pronotum with yellowish lateral margins.
Number of spots: None
Pronotoum: See 'pattern colour' above.
Leg colour: Dark metallic blue
Confusion species: Hydrothassa glabra
, Confusion species: Hydrothassa hannoveriana

Biology

Status: Common and widespread.
Habitat: Various
Host plant: Various, especially buttercups
Overwintering: Adults overwinter from September to mid April.
Food: Leaves and flowers of host plants (larvae on the undersides of leaves)
Other notes: Similar to H. glabra and H. hannoveriana. Separated from H. glabra by the orange-yellow lateral margins to the pronotum (not present in H. glabra). Separated from H. hannoveriana by the lack of a median elytral stripe (usually present in H. hannoveriana); in specimens of H. hannoveriana where this is absent, the aedeagus may need to be examined in - in H. hannoveriana, the tip has a slight angle near the tip (lateral view), in H. marginella, the tip is more-or-less straight or slightly curved (no angle).

Distribution (may take a minute to appear)

Distribution Map

Hydrothassa hannoveriana

Size
3.5-5.0mm
Basic colour
Dark metallic blue and orange-yellow or reddish
Pattern colour
Dark metallic blue; pronotum with orange-yellow side margins, elytra with yellowish or reddish median longitudinal stripe and yellowish side margin. These elytral marks may fuse, especially at the rear in females; the median stripe may be broken/absent.
Leg colour
Dark metallic blue

Hydrothassa hannoveriana

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Hydrothassa
  • Hydrothassa hannoveriana

Description

Size: 3.5-5.0mm
Basic colour: Dark metallic blue and orange-yellow or reddish
Pattern colour: Dark metallic blue; pronotum with orange-yellow side margins, elytra with yellowish or reddish median longitudinal stripe and yellowish side margin. These elytral marks may fuse, especially at the rear in females; the median stripe may be broken/absent.
Number of spots: None
Other colour forms: None
Pronotoum: See 'pattern colour' above.
Leg colour: Dark metallic blue
Confusion species: Hydrothassa glabra
, Confusion species: Hydrothassa marginella

Biology

Status: Rare (RDB3) and very scattered; may be under-recorded.
Habitat: tarns, marshes, peat bogs (sometimes forests).
Host plant: Usually on Marsh-marigold (Caltha palustris)
Overwintering: Unknown
Food: Leaves and flowers of host plants (larvae on the undersides of leaves)
Other notes: Similar to H. glabra and H. marginella. Separated from H. glabra by the orange-yellow lateral margins to the pronotum (not present in H. glabra). Separated from H. marginella by the median elytral stripe (not present in H. marginella); in specimens where this is absent, the aedeagus may need to be examined in - in H. hannoveriana, the tip has a slight angle near the tip (lateral view), in H. marginella, the tip is more-or-less straight or slightly curved (no angle).

Distribution (may take a minute to appear)

Distribution Map

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