Wednesday, October 8, 2008

Until now...

Apodrosus is a genus of Entiminae weevils (Coleoptera: Curculionidae), that contain just two species reported from Puerto Rico: A argentatus and A. wolcotti.
It was described by Marshall in 1922, closely related to Polydrusus Germar 1817, in the Polydrusini tribe (sensu Alonso-Zarazaga & Lyal 1999).

The main features include small size (5 to 7 mm), connate claws, a long, deep median furrow on the head and a large, bare, smooth triangular area formed by the epistome.
Recently some species belonging to this genus has been collected in the Dominican Republic, but these does not pertain to the described species. These new species are waiting for be described.

This revision will be the first chapter of my Master's thesis. It includes redescriptions of the known species, descriptions of the new ones, all including a complete set of morphological traits, not just external, but also characters of mouthparts and terminalia. Those will be made by built a database in DELTA. Additionally, this work will contain habitus pictures, drawings of structures and SEM pictures. Finally, a dichotomous key to the identification of the species will be constructed and a phylogenetical hypothesis will be proposed.

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