Longitarsus reichei

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus reichei

Description

Size: 1.5-2mm
Basic colour: Yellowish, orange or orange-brown
Pattern colour: None, head dark reddish or pitchy yellow.
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour, hind femora darkened.
Confusion species: Longitarsus pratensis

Western Palaearctic, including Turkey, Armenia, Iran, Ukraine and Russia.

Biology

Status: Widely scattered, mainly England and Wales.
Habitat: Various
Host plant: Plantains (Plantago spp.), occasionally (and probably accidentally) on other plants.
Overwintering: As adults
Food: Adults on leaves, larvae at roots.
Other notes: Adults parasitised by larvae of a braconid wasp, probably Perilitus sp. Elytra more elongate than in L. pratensis, which has the head dark brown to blackish, sometimes pitchy.

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Longitarsus succineus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus succineus
Common name
Chrysanthemum Flea Beetle

Description

Size: 1.5-2.4mm
Basic colour: Pale dusky yellow
Pattern colour: None (head usually rusty-red)
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour, hind femora darkened (brownish)
Confusion species: Longitarsus aeruginosus
, Confusion species: Longitarsus pellucidus

Palaearctic, including the Middle East and North Africa; introduced into North America.

Biology

Status: Widespread and common (mainly coastal in Ireland)
Habitat: Various
Host plant: Various Asteraceae, sometimes on other plants.
Overwintering: As larvae and possibly eggs.
Food: Adults on leaves; larvae in soil at the roots of common ragwort, Senecio jacobaea
Other notes: Generally paler than the rare L. aeruginosus. Elytral punctures less distinct than those of L. pellucidus. Adults parasitised by larvae of a braconid wasp, probably Perilitus sp.

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Longitarsus rutilus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus rutilus

Description

Size: 2.5-3mm
Basic colour: Dusky yellow to reddish
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour, hind femora usually slightly darkened (reddish-yellow to brownish). Compare with the similar L. agilis.
Confusion species: Longitarsus agilis

Western Palaearctic including North Africa and Yemen.

Biology

Status: Scarce (Notable A) in southern England.
RDB Category: Vulnerable (RDB2)
Habitat: Usully near stream & pond margins, marshes and in woodland clearings; sometimes clay pits and chalky slopes.
Host plant: Figworts, Scrophularia spp.
Overwintering: as adults
Food: Adults on leaves, larvae probably at roots.

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Longitarsus rubiginosus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus rubiginosus

Description

Size: 2-2.5mm
Basic colour: Usually dusky yellow, sometimes rust-red to blackish-brown.
Pattern colour: None
Number of spots: None
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: As basic colour

Palaearctic, including Morocco; introduced into Canada.

Biology

Status: Widespread and fairly common in England, the Welsh coast and southern Scotland; old records from western Ireland.
Habitat: Various
Host plant: Usually on bindweeds (Convolvulaceae)
Overwintering: As eggs, possibly also larvae and adults
Food: Adults on leaves, larvae at roots

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Longitarsus plantagomaritimus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus plantagomaritimus

Description

Size: 2.4-2.7mm
Basic colour: Yellowish to reddish or brownish
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour, hind femora darkened. Males have strongly swollen first tarsal segments on the front legs.
Confusion species: Longitarsus kutscherae
, Confusion species: Longitarsus melanocephalus

NW Palaearctic, as far north as the coast of the White Sea.

Biology

Status: Scattered around the coast (not in Ireland). Scarce (Notable B)
Habitat: Various littoral habitats.
Host plant: Sea plantain Plantago maritima
Overwintering: As adults
Food: Adults on leaves, larvae probably at roots and/or leaf petioles.
Other notes: Separation from L. kutscherae and L. melanocephalus may be attempted using size/width of male front tarsi, but dissection of genitalia may be required.

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Longitarsus quadriguttatus

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus quadriguttatus

Description

Size: 2.5-3mm
Basic colour: Black
Pattern colour: Yellow, orange or red
Number of spots: 4 (front and rear of each elytron). In var. binotatus the spots are indistinct; in var. immaculatus, the spots are absent.
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: Brown, hind femora black.

Western Palaearctic

Biology

Status: Very local, SE England only (old record from Belfast); Scarce (Notable A)
Habitat: Heathland, calcareous grassland, parkland, roadside verges, disturbed ground, sandy arable fields.
Host plant: Hound's-tongue (Cynoglossum officinale) and possibly viper's-bugloss (Echium vulgare).
Overwintering: As larvae
Food: Adults on leaves, larvae at roots

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Longitarsus pratensis

Taxonomy

  • Polyphaga
  • Chrysomeloidea
  • Chrysomelidae
  • Longitarsus
  • Longitarsus pratensis

Description

Size: 1.2-1.8mm
Basic colour: Yellowish, orange or orange-brown
Pattern colour: None, head brown to blackish, sometimes pitchy.
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour, hind femora darkened.
Confusion species: Longitarsus reichei

Palaearctic, including the Middle East, North Africa & Cape Verde; introduced into North America.

Biology

Status: Widespread and common (scattered in Scotland and Ireland)
Habitat: Various
Host plant: Plantains (Plantago spp.)
Overwintering: As adults in moss, possibly also as eggs and larvae.
Food: Adults on leaves and possibly pollen, larvae on parenchyma (inner cells between the upper and lower surfaces) of leaves.
Other notes: Adults parasitised by unidentified nematodes, and by larvae of a braconid wasp, probably Perilitus sp. Elytra less elongate than in L. reichei, which has the head dark reddish or pitchy yellow and blackish on top.

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