Order Heteroptera, Coreoidea - Squash Bugs

Squash Bugs

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Dock Bug Coreus marginatus (Linnaeus, 1758)

Coreus marginatus Coreus marginatus
  • Family Coreidae
  • Cambridge, old St Ives Railway TL462615, 11 Sep 2002.
  • An impressive bug 14mm long. The orange is not always so prominent.
  • Hosts include sheep's sorrel, sorrel, great water dock, curled dock, rhubarb, persicaria and knotgrass; (Polygonaceae). Because of this host range the bugs may be found in hedgerows, the margins of cultivated fields, watermeadows, wastelands (but seldom on heaths) and the edges of woods. Found in England and Wales up to the southern midlands, the known distribution is patchy; the bug is much more abundant in the south of its range.—Southwood & Leston
  • Also shown, two stages of the nymph

Box Bug Gonocerus acuteangulatus (Goeze, 1778)

Gonocerus acuteangulatus
  • Family Coreidae
  • Cambridge, Mill Road Cemetery TL461581, 8 Sep 2014.
  • In Britain was long known only from Box Hill in Surrey and feeding on box trees. It has recently rapidly expanded its geographical range and adopted a broader diet, including hawthorn, buckthorn, yew and plum trees.
  • The adult resembles a slimmed-down Coreus, but with yellow-brown legs. The nymphs are also slimmer than the equivalent Coreus stages, the long antennae very prominent.

Corizus hyoscyami (Linnaeus, 1758)

Corizus hyoscyami
  • Family Rhopalidae
  • Cambridge, Mill Road Cemetery TL461581, 24 Aug 2014.
  • Nymphs are brown, a long elliptical shape, and feed on a variety of plants
  • Before 2005 the species was found only on the coasts of Wales and south-west England; since then it has become widespread as far north as Lincolnshire.
  • Enlarged view

Rhopalus subrufus (Gmelin, 1790)

Rhopalus subrufus
  • Family Rhopalidae
  • Cambridge, garden, 10 May 2015.
  • In Britain the host is usually St John's Wort, but other plants may be used.
  • Found in woodland clearings and other lush flowery places.
  • Common in southern counties and spreads into East Anglia and South Wales.

Stictopleurus abutilon (Rossi, 1790)

Stictopleurus abutilon
  • Family Rhopalidae
  • Cambridge, Mill Road Cemetery TL461583, 24 Aug 2014.
  • Only a vagrant species before about 2000, it first established itself in the Thames Estuary area and has become fairly widespread.
  • The similar species S. punctatonervosus has a similar history and has perhaps spread a little more rapidly. The species shown here is distinguished by a ridge at rhe front of the pronotum with closed loop markings at the side behind it - visible on the Enlarged view

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