ASTRIN, Stüben & Astrin, 2010

Stüben, Peter E. & Astrin, Jonas J., 2010, Molecular phylogeny in endemic weevils: revision of the genera of Macaronesian Cryptorhynchinae (Coleoptera: Curculionidae), Zoological Journal of the Linnean Society 160 (1), pp. 40-87 : 62

ASTRIN SUBGEN. NOV. ( FIG. 8A–E )

The three (sub-)species of this subgenus live on Chamaecytisus proliferus Link. (escobón, tagasaste), a plant belonging to the pea family ( Fabaceae ) (cf. Stüben, 2007b) and have only a simple, fork-like structure in the endophallus without a second terminal, trapezoidal table ( Fig. 8B ). Based on the molecular tree, it is possible to include this well-supported group in the genus Silvacalles , to which it is joined as sister taxon (but without high posterior probability values). According to the morphological affinity to the Silvacalles s.s. and S. ( Tolpiacalles ) species (and in order to avoid taxonomic splitting), we include this group – as subgenus – in the genus Silvacalles .

Differential diagnosis: See below (‘Key to the genera and subgenera of Macaronesian Cryptorhynchinae’).

Figures

Figures 2–22. Morphological, biological, and ecological comparison of the genera and subgenera of Macaronesian Cryptorhynchinae along with the respective sections of the tree; (TS) = type species. Figures 4E and 5E show a section of the tree that results when 16S sequences for Aeoniacalles aeonisimilis* and Dendroacalles euphorbiacus* are excluded.