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Abstract:

Larval morphology of the Desmopachria vicina Sharp species group is investigated. For this purpose, the three larval instars of Desmopachria concolor Sharp and Desmopachria punctatissima Zimmermann are described and illustrated for the first time, with an emphasis on the morphometry and chaetotaxy. Both species have the setae LA3, LA4 and LA5 inserted proximally on the prementum and the seta LA10 inserted distally on the second labial palpomere, the two larval autapomorphies that define the genus Desmopachria Babington. They are also characterized by the presence of secondary setae on the ventral surface of the siphon of third-instar larva; this character state is a synapomorphy of Desmopachria + Hyphydrus Illiger. Desmopachria concolor and D. punctatissima are very similar morphologically, suggesting that they could be closely related phylogenetically. Larvae of the D. vicina species group differ from those of the Desmopachria convexa (Aubé) species group in the presence of one additional seta on the dorsal surface of the prementum, the more distal insertion of the-seta LA2 on the prementum, and the absence of one of the distal pores (LAb or LAd) on the first labial palpomere.

Registro:

Documento: Artículo
Título:Descriptions of Larvae of Desmopachria Babington (Coleoptera: Dytiscidae: Hydroporinae): The D. vicina sharp species group
Autor:Michat, M.C.; Archangelsky, M.
Filiación:Laboratorio de Entomología, Dpto. de Biodiversidad y Biología Experimental, Universidad de Buenos Aires, Av. Int. Güiraldes s/n, 1428 Buenos Aires, Argentina
CONICET-LIESA, Laboratorio de Investigaciones en Ecologia y Sistemática Animal, Universidad Nacional de La patagonia, San Juan Bosco, Sarmiento 849, 9200 Esquel, Chubut, Argentina
Palabras clave:beetle; larva; morphology; morphometry; new species; phylogenetics; Coleoptera; Desmopachria; Desmopachria concolor; Desmopachria convexa; Dytiscidae; Hydroporinae; Hyphydrus
Año:2007
Volumen:61
Número:2
Página de inicio:264
Página de fin:276
DOI: http://dx.doi.org/10.1649/0010-065X(2007)61[264:DOLODB]2.0.CO;2
Título revista:Coleopterists Bulletin
Título revista abreviado:Coleopt. Bull.
ISSN:0010065X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0010065X_v61_n2_p264_Michat

Referencias:

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Citas:

---------- APA ----------
Michat, M.C. & Archangelsky, M. (2007) . Descriptions of Larvae of Desmopachria Babington (Coleoptera: Dytiscidae: Hydroporinae): The D. vicina sharp species group. Coleopterists Bulletin, 61(2), 264-276.
http://dx.doi.org/10.1649/0010-065X(2007)61[264:DOLODB]2.0.CO;2
---------- CHICAGO ----------
Michat, M.C., Archangelsky, M. "Descriptions of Larvae of Desmopachria Babington (Coleoptera: Dytiscidae: Hydroporinae): The D. vicina sharp species group" . Coleopterists Bulletin 61, no. 2 (2007) : 264-276.
http://dx.doi.org/10.1649/0010-065X(2007)61[264:DOLODB]2.0.CO;2
---------- MLA ----------
Michat, M.C., Archangelsky, M. "Descriptions of Larvae of Desmopachria Babington (Coleoptera: Dytiscidae: Hydroporinae): The D. vicina sharp species group" . Coleopterists Bulletin, vol. 61, no. 2, 2007, pp. 264-276.
http://dx.doi.org/10.1649/0010-065X(2007)61[264:DOLODB]2.0.CO;2
---------- VANCOUVER ----------
Michat, M.C., Archangelsky, M. Descriptions of Larvae of Desmopachria Babington (Coleoptera: Dytiscidae: Hydroporinae): The D. vicina sharp species group. Coleopt. Bull. 2007;61(2):264-276.
http://dx.doi.org/10.1649/0010-065X(2007)61[264:DOLODB]2.0.CO;2