Rhyzodiastes (Rhyzodiastes s. str.)Ross T. Bell
- Rhyzodiastes pentacyclus
- Rhyzodiastes parumcostatus
- Rhyzodiastes liratus
- Rhyzodiastes costatus
- Rhyzodiastes suturalis
IntroductionRhyzodiastes s. str. is a small subgenus with five species found in eastern and southern Brazil (but not in Amazonia) and in northern Argentina.
CharacteristicsThe antennal stylet is broad, compressed, and obliquely truncate resembling a chisel blade. There are minor setae in tufts on antennal segments IV-X, V-X, or VI-X. Clypeal setae are present. The eye is crescentic and narrow in most species, but it is broad in R. liratus. The gena has a curved band of pollinosity. The inner carina of the pronotum has a sharply defined lateral margin. The paramedian groove is pollinose and broad, at least half as wide as the outer carina. The marginal groove is broad, sharply defined, pollinose, and clearly visible in dorsal view. Pronotal setae are absent. There is no intercalary stria, and the elytral interval, especially interval III, is costate. Elytral setae are absent. The metasternum has a median sulcus.
Rhyzodiastes (Rhyzodiastes s. str.) pentacyclus.
(A) Antennal segments IX-XI. (B) Dorsal aspect of head and pronotum.
Modified from Bell and Bell (1985). Copyright © 1985 Ross T. Bell and Joyce R. Bell.
Bell, R. T. and J. R. Bell. 1985. Rhysodini of the World Part IV. Revisions of Rhyzodiastes and Clinidium, with new species in other genera (Coleoptera: Carabidae or Rhysodidae). Quaestiones Entomologicae 21(1): 1-172.
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Ross T. Bell
University of Vermont, Burlington, Vermont, USA
Page copyright © 2000 Ross T. Bell
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- First online 01 March 2000
Citing this page:
Bell, Ross T. 2000. Rhyzodiastes (Rhyzodiastes s. str.). Version 01 March 2000 (under construction). http://tolweb.org/Rhyzodiastes_%28Rhyzodiastes_s._str.%29/1935/2000.03.01 in The Tree of Life Web Project, http://tolweb.org/