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Cerceris arenaria (Linnaeus, 1758).

Cerceris arenaria
  • Cambridge, 22 Jun 2002.
  • C. arenaria stocks its nest with weevils (Vine Weevil size or slightly smaller)
  • Subfamily Philanthinae

Cerceris rybyensis (Linnaeus, 1771)

Cerceris rybyensis
  • Cambridge, 22 Jun 2002.
  • C. rybyensis stocks its nest with small solitary bees, such as Lasioglossum, Halictus, or Andrena dorsata.

Bee-wolf Philanthus triangulum (Fabricius, 1790)

Philanthus triangulum
  • Cambridge, Old St Ives railway TL463614, 14 Jul 2002.

  • Named for the females' practice of catching live bees and paralysing them as food for their larvae.

Ectemnius sexcinctus

Ectemnius sexcinctus Ectemnius sexcinctus
  • Cambridge, garden, 3 Sep 2007. Enlarge: (1) (2)

  • One of several very similar species. Thanks to Tim Strudwick for the "probable" identification: microscopic examination is necessary for certainty.

  • Members of the genus provision their nests with captured muscid or syrphid flies.

  • Subfamily Crabroninae

Crossocerus sp.

Crossocerus
  • Cambridge, garden, 23 Sep 2001.

  • One of several very similar dark Crossocerus species.

  • Head + body length: 5.5mm

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