Ctenocallis
Klodnitsky, 1924
Species Guides
1Ctenocallis is a of aphids in the Aphididae, Calaphidinae. At least one , C. setosa, has been documented as in Japan, representing the first Asian record for a genus otherwise native to Europe. The genus is characterized by species associated with leguminous plants.
Pronunciation
How to pronounce Ctenocallis: /ˌktɛn oʊˈkæl ɪs/
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Images
Habitat
in this are associated with leguminous plants; C. setosa has been found on naturalized Cytisus scoparius (scotch broom) in Japan.
Distribution
Europe (native); Japan (, first Asian record); North America (adventive, C. setosa). Distribution records from GBIF include Denmark and Norway.
Diet
Phloem-feeding on plants; C. setosa feeds on Cytisus scoparius.
Host Associations
- Cytisus scoparius (L.) Link - plantFabaceae; naturalized plant in Japan
Life Cycle
observed in C. setosa in Japan: sexual morphs (oviparae and males) produced in fall for deposition, without alternation during summer.
Human Relevance
C. setosa detected as in Japan, highlighting importance of surveys on naturalized plants for early detection of introduced species.
More Details
Adventive detection
The 2025 record of C. setosa in Japan demonstrates that studies on naturalized plants are crucial for early detection of newly introduced .