Descriptions of the second and third instars of Heterosternuta sulphuria (Matta and Wolfe) (Coleoptera: Dytiscidae: Hydroporinae), with a key for identification of the known larvae of Heterosternuta strand

Yves Alarie, Scott D. Longing

Research output: Contribution to journalArticle

Abstract

Descriptions of structures of the second and third instars of Heterosternuta sulphuria (Matta and Wolfe) are presented. Larvae of H. sulphuria are fairly similar to the known larvae of Heterosternuta Strand, all of these being characterized by the presence of lateral spinulae on the prementum, the absence of natatory setae on the legs, the absence of spiracular openings on the mesothorax and abdominal segments 1-7, siphon of the third instar cone-shaped, short, and highly constricted posterior to insertion of urogomphi, and urogomphomere 1 with secondary setae. A key to identification of the third instars of known species of Heterosternuta is provided.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalColeopterists Bulletin
Volume64
Issue number1
DOIs
StatePublished - Mar 2010

Keywords

  • Chaetotaxy
  • Heterosternuta cocheconis
  • Heterosternuta diversicornis
  • Heterosternuta wickhami
  • Hydroporini
  • Morphology

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