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| COLEOPTERA, Hygrobiidae --  <Images> & <Juveniles>   Please
  refer also to the following links for details on this group:    Hygrobiidae =,  Link 1            
  Hygrobiidae is a small family that is closely related to
  Dytiscidae.  They are aquatic, living
  in ponds rather than streams.  Food
  preferences of Hygrobia hermani F. (= Pelobius tardus Hbst.)
  were studied by Balfour-Browne (1922a). 
  Adults are found in mud at the bottom of ponds, and females lay their
  eggs in rows on the submerged stems of aquatic plants.  The larvae feed on worms and the immature
  stages of the less active aquatic insects. 
  The mature larva leaves the water to pupate, and forms a cells in the
  soil 5 cm. or more beneath the surface. 
  A single generation occurs annually, and overwintering is as adults in
  the mud at the pond bottom (Clausen 1940).   = = = = = = = = = = = =   References:   Please refer to  <biology.ref.htm>, [Additional references
  may be found at:  MELVYL
  Library]   Alarie, Y., R. G. Beutel & C. H. S. Watts.  2004: Larval
  morphology of three species of Hygrobiidae (Coleoptera: Adephaga:
  Dytiscoidea) with phylogenetic considerations. European journal of
  entomology, 101: 293-311. PDF   Britton, E. B. 1981: The Australian Hygrobiidae
  (Coleoptera). Journal of the Australian Entomological Society, 20:
  83-86. doi: 10.1111/j.1440-6055.1981.tb01004.x   Dettner, K. K.. 
  2005: 7.5. Hygrobiidae, Régimbart, 1879. Pp. 85-90 in: Beutel, R.G.; Leschen, R.A.B. (volume eds.) Coleoptera, beetles. Volume
  1: Morphology and systematics (Archostemata, Adephaga, Myxophaga, Polyphaga
  partim). In: Kristensen, N.P.
  & Beutel, R.G. (eds.) Handbook
  of zoology. A natural history of the phyla of the animal kingdom. Volume IV. Arthropoda: Insecta. Part 38. Berlin, New
  York: Walter de Gruyter.    Nilsson, A. N. 
  2006: Which name is valid – Hygrobiidae or Paelobiidae? Latissimus,
  21: 37-39. ISSN: 0966-2235   Nillson, A. N.  & B. J. 
  Van Vondel.  2005: Amphizoidae,
  Aspidytidae, Haliplidae, Noteridae and Paelobiidae (Coleoptera, Adephaga).
  World catalogue of insects, 7. Stenstrup: Apollo Books.   Topkara, E. T. & S. Balik.  2008: Short
  note. First record of the family Hygrobiidae (Coleoptera: Adephaga) from
  Turkey. Annales de la Société entomologique de
  France (n.s.), 44: 315-316. ISSN: 0037-9271   Catalogue of Palearctic Coleoptera. Vol. 1
  ed. I. Lobl, & A. Smetana, Apollo
  Books, Stenstrup, Denmark, 2003 and 2004 ISBN 87-88757-73-0, p.35   |