Cydnus

Fabricius, 1803

Cydnus is a of (: ) in the tribe Cydnini, Cydninae. The genus was established by Fabricius in 1803 and is characterized by morphological features including pegs on margins, hair-like setae on pronotum lateral margins, an submarginal impressed line on the pronotum, and a triangular scutellum broader than long. The fossil genus Eocenocydnus shows affinity to Cydnus based on shared morphological traits.

Cydnus aterrimus by (c) Eridan Xharahi, some rights reserved (CC BY). Used under a CC-BY license.Cydnus by no rights reserved, uploaded by Andreas Manz. Used under a CC0 license.Cydnus by no rights reserved, uploaded by Harald Schnöde (Schnde). Used under a CC0 license.

Pronunciation

How to pronounce Cydnus: /ˈkɪdnəs/

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Identification

Members of Cydnus can be distinguished from related by the combination of: pegs present on margins; hair-like setae on lateral margins of the pronotum; submarginal impressed line on the pronotum; triangular scutellum that is broader than long; extensive mesopleural evaporatorium; and large metapleural evaporatorium occupying approximately half the surface area. The peritreme is rounded. These features separate Cydnus from similar genera such as Chilocoris and Blaenocoris, though precise distinctions require examination of genitalic and other fine morphological characters.

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Similar Taxa

  • ChilocorisShares tribe Cydnini and general body plan; distinguished by specific combinations of pronotal and scutellar features
  • BlaenocorisRelated in tribe Cydnini; morphological differences in pronotal impressed lines and evaporatorium extent
  • EocenocydnusFossil showing morphological affinity to Cydnus based on shared tribal characteristics, though extinct and known only from Late Eocene deposits

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