Eur. J. Entomol. 102 (2): 231-240, 2005 | DOI: 10.14411/eje.2005.036

Description of the larval stages of Gymnochthebius jensenhaarupi and phylogenetic analysis of the relationships with other species of the subfamily Ochthebiinae (Coleoptera: Hydraenidae)

Juan A. DELGADO1, Miguel ARCHANGELSKY2
1 Departamento de Zoología y Antropología Física, Facultad de Biología, Universidad de Murcia, 30100, Murcia, Spain; e-mail: jdelgado@um.es
2 CONICET- Facultad de Ciencias Naturales (LIESA), Universidad Nacional de La Patagonia San Juan Bosco, Sarmiento 849, 9200 Esquel, Chubut, Argentina; e-mail: hydrophilidae@hotmail.com

The three larval instars of Gymnochthebius jensenhaarupi (Knisch, 1924) are described and illustrated, including a detailed analysis of their chaetotaxy and porotaxy. The specimens used in this study were collected with adults of G. jensenhaarupi and have been identified as such by association. Comparative notes on the morphology of these larvae with other species of the subfamily Ochthebiinae are given. A hypothesis of phylogenetic relationships between G. jensenhaarupi and other members of Ochthebiinae with thoroughly described larvae is presented. The monophyly of Ochthebiinae is supported by additional larval features. On the other hand Ochthebius, as currently composed, seems to by paraphyletic. Gymnochthebius Orchymont, 1943 is confirmed as the sister group of Aulacochthebius Kuwert, 1887.

Keywords: Coleoptera, Hydraenidae, Ochthebiinae, Gymnochthebius, larvae, chaetotaxy, phylogeny, Argentina, Neotropics

Received: September 8, 2004; Revised: December 8, 2004; Accepted: December 8, 2004; Published: May 3, 2005  Show citation

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DELGADO, J.A., & ARCHANGELSKY, M. (2005). Description of the larval stages of Gymnochthebius jensenhaarupi and phylogenetic analysis of the relationships with other species of the subfamily Ochthebiinae (Coleoptera: Hydraenidae). EJE, 102(2), 231-240. doi: 10.14411/eje.2005.036
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