Journal
ZOOTAXA
Volume 5196, Issue 1, Pages 135-144Publisher
MAGNOLIA PRESS
DOI: 10.11646/zootaxa.5196.1.7
Keywords
Adephaga; burrowing water beetle; morphometry; sensilla
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Funding
- CONICET
- ANPCyT
- University of Buenos Aires
- CNPq
- FAPEAM
- Spain Ministry of Universities
- [PICT -2017-1177]
- [UBACyT- 20020190100240BA]
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This study describes and illustrates all larval instars of Hydrocanthus debilis, including morphometric and chaetotaxic analyses. The larvae of this species have small dark dorsal maculae, which distinguishes them from other known species of the genus. They can be easily differentiated from larvae of H. socius by their smaller size, the length of parietal seta PA13 relative to seta PA14, and the relative distance between egg bursters.
All larval instars of the burrowing water beetle species Hydrocanthus debilis Sharp, 1882 are described and illustrated, including morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphus. Larvae of this species have many small dark dorsal maculae on the body, which easily distinguishes it from other known species of the genus except H. socius Sahlberg, 1884. Larvae of H. debilis can easily be separated from those of H. socius by their smaller size, the length of parietal seta PA13 relative to seta PA14, and the relative distance between egg bursters.
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