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Abstract:

The third instars of Coelhydrus brevicollis Sharp and Darwinhydrus solidus Sharp are described and illustrated for the first time, with detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi. A key for the identification of the third instars of the genera of Hyphydrini known in detail is provided. A parsimony analysis based on 49 informative larval characteristics was conducted using the program TNT. The consensus tree supports a placement of Coelhydrus Sharp and Darwinhydrus Sharp within the tribe Hyphydrini. Within the Hyphydrini, Coelhydrus is postulated to share a monophyletic origin with Hyphydrus Illiger and Desmopachria Babington. The phylogenetic placement of Darwinhydrus, however, remains contentious as our study found it part of an unresolved polytomy with Andex Sharp and Primospes Sharp.

Registro:

Documento: Artículo
Título:Larval Description and Phylogenetic Placement of the South African Endemic Genera Coelhydrus Sharp and Darwinhydrus Sharp (Coleoptera: Dytiscidae: Hydroporinae: Hyphydrini)
Autor:Alarie, Y.; Michat, M.C.; Challet, G.L.
Filiación:Department of Biology, Laurentian University, Sudbury, ON P3E 2C6, Canada
Laboratory of Entomology, DBBE-FCEN and IBBEA-CONICET, University of Buenos Aires, Buenos Aires, Argentina
GILBERT L. CHALLET, 30 Celonova Place, Foothill Ranch, CA 92610, United States
Palabras clave:Afrotropical; larvae; predaceous diving beetles; Primospes suturalis; systematics; Afrotropical Region; beetle; endemic species; identification key; larva; morphology; morphometry; new record; parsimony analysis; phylogenetics; taxonomy; South Africa; Coleoptera; Desmopachria; Dytiscidae; Hydroporinae; Hyphydrini; Hyphydrus
Año:2017
Volumen:71
Número:2
Página de inicio:389
Página de fin:401
DOI: http://dx.doi.org/10.1649/0010-065X-71-2.389
Título revista:Coleopterists Bulletin
Título revista abreviado:Coleopt. Bull.
ISSN:0010065X
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_0010065X_v71_n2_p389_Alarie

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Citas:

---------- APA ----------
Alarie, Y., Michat, M.C. & Challet, G.L. (2017) . Larval Description and Phylogenetic Placement of the South African Endemic Genera Coelhydrus Sharp and Darwinhydrus Sharp (Coleoptera: Dytiscidae: Hydroporinae: Hyphydrini). Coleopterists Bulletin, 71(2), 389-401.
http://dx.doi.org/10.1649/0010-065X-71-2.389
---------- CHICAGO ----------
Alarie, Y., Michat, M.C., Challet, G.L. "Larval Description and Phylogenetic Placement of the South African Endemic Genera Coelhydrus Sharp and Darwinhydrus Sharp (Coleoptera: Dytiscidae: Hydroporinae: Hyphydrini)" . Coleopterists Bulletin 71, no. 2 (2017) : 389-401.
http://dx.doi.org/10.1649/0010-065X-71-2.389
---------- MLA ----------
Alarie, Y., Michat, M.C., Challet, G.L. "Larval Description and Phylogenetic Placement of the South African Endemic Genera Coelhydrus Sharp and Darwinhydrus Sharp (Coleoptera: Dytiscidae: Hydroporinae: Hyphydrini)" . Coleopterists Bulletin, vol. 71, no. 2, 2017, pp. 389-401.
http://dx.doi.org/10.1649/0010-065X-71-2.389
---------- VANCOUVER ----------
Alarie, Y., Michat, M.C., Challet, G.L. Larval Description and Phylogenetic Placement of the South African Endemic Genera Coelhydrus Sharp and Darwinhydrus Sharp (Coleoptera: Dytiscidae: Hydroporinae: Hyphydrini). Coleopt. Bull. 2017;71(2):389-401.
http://dx.doi.org/10.1649/0010-065X-71-2.389