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Abstract:

All the preimaginal stages of Lancetes marginatus (Steinheil) and third instar larva of L. biremis Říha are described and figured for the first time. Detailed analyses of the morphometry, chaetotaxy and porotaxy are provided, and comparisons with the immatures of other species of the genus are included. The larvae described have multifragmented urogomphi, the only larval synapomorphy that defines the genus Lancetes Sharp. Third instars also present a secondary subdivision in some of the cephalic appendages, which is a synapomorphy of Lancetes plus Dytiscinae. First instar larva of L. marginatus is distinguished from the remaining known first instars of Lancetes by the absence of primary pores FRe and MXa, and the presence of one additional minute seta on the dorsal surface of antennomere 4 and one additional pore on the urogomphus. The third instar of L. marginatus is unique by the absence of secondary dorsal setae on the femur. The pupa of L. marginatus differs from that of L. angusticollis by the presence of fewer setae on the head, pronotum and abdominal terga V to VIII. © Taylor & Francis.

Registro:

Documento: Artículo
Título:Descriptions of the preimaginal stages of Lancetes marginatus (Steinheil) and L. biremis Ríha (Coleoptera: Dytiscidae), and comparative notes with other Lancetes larvae
Autor:Michat, M.C.; Archangelsky, M.; Torres, P.L.M.
Filiación:Departmento de Biodiversidad Y Biología Experimental, Universidad de Buenos Aires, Argentina
CONICET - LEA, Universidad Nacional de La Patagonia San Juan Bosco, Esquel, Chubut, Argentina
Laboratorio de Entomología, Depto. de Biodiversidad Y Biología Experimental, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
Palabras clave:Argentina; Coleoptera; Dytiscidae; Lancetes; Larvae; Biremis; Coleoptera; Dytiscidae; Dytiscinae; Insecta; Lancetes; Lancetes angusticollis
Año:2005
Volumen:40
Número:2
Página de inicio:129
Página de fin:142
DOI: http://dx.doi.org/10.1080/01650520500129729
Título revista:Studies on Neotropical Fauna and Environment
Título revista abreviado:Stud. Neotrop. Fauna Environ.
ISSN:01650521
CODEN:SNFED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650521_v40_n2_p129_Michat

Referencias:

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  • Alarie, Y., Phylogenetic relationships of Nearctic Colymbetinae (Coleoptera: Adephaga: Dytiscidae) based on chaetotaxic and porotaxic analysis of head capsule and appendages of larvae (1998) Can Entomol, 130, pp. 803-824
  • Alarie, Y., Archangelsky, M., Nilsson, A.N., Watts, C.H.S., Larval morphology of the genus Lancetes (Coleoptera: Adephaga: Dytiscidae): The hypothesis of sister-group relationship with the subfamily Dytiscinae revisited (2002) Can Entomol, 134, pp. 467-501
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Citas:

---------- APA ----------
Michat, M.C., Archangelsky, M. & Torres, P.L.M. (2005) . Descriptions of the preimaginal stages of Lancetes marginatus (Steinheil) and L. biremis Ríha (Coleoptera: Dytiscidae), and comparative notes with other Lancetes larvae. Studies on Neotropical Fauna and Environment, 40(2), 129-142.
http://dx.doi.org/10.1080/01650520500129729
---------- CHICAGO ----------
Michat, M.C., Archangelsky, M., Torres, P.L.M. "Descriptions of the preimaginal stages of Lancetes marginatus (Steinheil) and L. biremis Ríha (Coleoptera: Dytiscidae), and comparative notes with other Lancetes larvae" . Studies on Neotropical Fauna and Environment 40, no. 2 (2005) : 129-142.
http://dx.doi.org/10.1080/01650520500129729
---------- MLA ----------
Michat, M.C., Archangelsky, M., Torres, P.L.M. "Descriptions of the preimaginal stages of Lancetes marginatus (Steinheil) and L. biremis Ríha (Coleoptera: Dytiscidae), and comparative notes with other Lancetes larvae" . Studies on Neotropical Fauna and Environment, vol. 40, no. 2, 2005, pp. 129-142.
http://dx.doi.org/10.1080/01650520500129729
---------- VANCOUVER ----------
Michat, M.C., Archangelsky, M., Torres, P.L.M. Descriptions of the preimaginal stages of Lancetes marginatus (Steinheil) and L. biremis Ríha (Coleoptera: Dytiscidae), and comparative notes with other Lancetes larvae. Stud. Neotrop. Fauna Environ. 2005;40(2):129-142.
http://dx.doi.org/10.1080/01650520500129729