Cauchas
Zeller, 1839
Cauchas is a of fairy longhorn () in the Adelinae, established by Zeller in 1839 and elevated to genus status in 1980. It contains approximately 17 described distributed across Europe and Asia. The genus is characterized by small size, reduced in length, and specific associations with Veronica species.
Pronunciation
How to pronounce Cauchas: /ˈkau̯.kas/
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Identification
Members of Cauchas can be distinguished from the related Adela by their less pronounced in length; males have antennae only marginally longer than the , rather than the extremely elongated antennae seen in male Adela. Forewing length ranges 3.5–5 mm. Specific identification to level often requires examination of pattern details such as the presence and shape of .
Images
Habitat
Associated with flowers of plants, particularly Veronica . observed resting in sunshine on flowers.
Distribution
Widespread across Europe, extending east to central Asia; absent from northern Scandinavia, Portugal, and Ireland. Distribution records confirmed from Denmark, Norway, and Sweden.
Seasonality
active from end of April to end of July; .
Diet
Larval feeding restricted to Veronica chamaedrys and Veronica teucrium (Plantaginaceae).
Host Associations
- Veronica chamaedrys - larval foodplantGermander Speedwell
- Veronica teucrium - larval foodplant
Life Cycle
. occurs in leaf material. Larval case and pupal exuvium present; whitish and described.
Behavior
rest in sunshine on flowers of plants. in length is reduced compared to related .
Similar Taxa
- AdelaExtremely elongated in males (much longer than ) versus only marginally longer in Cauchas; pronounced in Adela versus reduced in Cauchas.
More Details
Taxonomic history
Originally described as a subgenus of Adela by Philipp Christoph Zeller in 1839; elevated to full status by Ebbe Schmidt Nielsen in 1980 based on morphological and biological distinctions.
Genomic resources
-level assembly available for Cauchas fibulella as part of the Darwin Tree of Life project, comprising ~578 Mb and ~573 Mb haplotypes with 25 chromosomal pseudomolecules including .