Order (Heteroptera), section Pentatomoidea

Shield Bugs, so called from the general shape of the adults.

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Hawthorn Shield Bug Acanthosoma haemorrhoidale (Linnaeus, 1758)

Acanthosoma haemorrhoidale
  • Cambridge (Gwydir Street) 4 Jul 2002
  • Family Acanthosomatidae
  • Feeds on leaves and fruits
  • Length: 14mm

Juniper Shield Bug Cyphostethus tristriatus (Fieber, 1860)

Cyphostethus tristriatus
  • Cambridge, Adams Road (TL437587) 26 Jun 2012
  • Larvae feeds on juniper berries, also cypress
  • Length: 10mm.
  • As well as being smaller than A. haemorrhoidale it lacks the protruding "shoulders", and the red coloration does not stretch so far, leaving boomerang shapes.

Birch Shield Bug Elasmostethus interstinctus (Linnaeus, 1758)

Elasmostethus interstinctus
  • Cambridge, Bewick Bridge (TL494570) 26 Aug 2014
  • The larvae feed principally on birch, but may also be found on hazel and aspen
  • Similar in size to C. tristriatus with slight "shoulders"—not as prominent as in A. haemorrhoidale and not so much red. Orange shading on the scutellum.

Parent Bug Elasmucha grisea (Linnaeus, 1758)

Elasmucha grisea Elasmucha grisea nymphs
  • Adult: Old St Ives Railway, TL464614; 20 Sep 2002 Enlarge
  • Nymphs: Adams Road LNR, TL437587; 4 Sep 2007 Enlarge
  • Family Acanthosomatidae
  • Takes its common name from the protective care which the females exercise over eggs and young nymphs.
  • The nymphs, on birch or alder, cluster together even without the parent's presence.
  • Length: 7mm

Tortoise Shieldbug Eurygaster testudinaria (Geoffroy, 1785)

Eurygaster testudinaria
  • Nymph, Cambridge, Barnwell East Nature Reserve TL479583. 28 Jul 2015
  • Family Scutelleridae
  • Larvae feed on grasses
  • Has expanded its range northwards over the last decade, but still very much a southern British species
  • The similar Eurygaster maura remains, for the moment, largely confined to the southeast corner of England

Bordered Shieldbug Legnotus limbosus (Geoffroy, 1785)

Legnotus limbosus
  • Cambridge (Gwydir Street) 11 May 2015
  • Family Cydnidae
  • A small shieldbug, around 4mm long
  • Associated with bedstraws (Galium spp.), burrows into loose soil at the base of the plants
  • Widely distributed in southern England, but not many records - probably under-reported because of its burrowing
  • The similar, rarer L. picipes has a shorter white rim and favours drier habitats

Forget-me-not Shieldbug Sehirus luctuosus Mulsant & Rey, 1866

Sehirus luctuosus
  • Cambridge (Gwydir Street) 19 May 2002
  • Family Cydnidae
  • Widespread in the southern counties
  • Host plant is common forget-me-not Myosotis sylvatica

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