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The morphology and behavior of the endemic Malagasy whirligig beetle Heterogyrus milloti Legros, 1953 (Coleoptera: Gyrinidae: Heterogyrinae)
Swedish Museum of Natural History, Department of Zoology. (Bergsten Systematic Entomology Lab)
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2017 (English)In: The Coleopterists bulletin, ISSN 0010-065X, E-ISSN 1938-4394, Vol. 71, no 2, 315-328 p.Article in journal (Refereed) Published
Abstract [en]

The Malagasy endemic whirligig beetle Heterogyrus milloti Legros, 1953 is redescribed. Jumping behavior of H. milloti is reported here for the first time with video recordings provided. Results of a behavioral experiment conducted in the field demonstrate H. milloti jumps in a targeted manner in a downstream direction. The unique habitat of H. milloti is described in detail with both image and video of the habitat included. Morphology of H. milloti is discussed in detail, revealing symplesiomorphies with Spanglerogyrus Folkerts, 1979, characters forming transitional series between Spanglerogyrus and the Gyrininae, and features unique to H. milloti. The potential adaptive significance of these peculiar morphological features in association with the habitat of H. milloti is discussed. Finally, an argument for the necessity of conservation of this species is made, and common names in English, French, Malagasy, and Swedish for H. milloti are proposed to aid conservation efforts.

Place, publisher, year, edition, pages
2017. Vol. 71, no 2, 315-328 p.
Keyword [en]
Hydradephaga, aquatic beetles, Madagascar, conservation, jumping
National Category
Biological Systematics
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-2488DOI: DOI.org/10.1649/0010-065X-71.2.315OAI: oai:DiVA.org:nrm-2488DiVA: diva2:1154282
Funder
Swedish Research Council, #2009-3744, #2013-5170
Available from: 2017-11-02 Created: 2017-11-02 Last updated: 2017-11-20Bibliographically approved

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