Solenopotes capillatus
Enderlein, 1904
Little Blue Cattle Louse, Tubercle-bearing Louse
Solenopotes capillatus is the smallest of the sucking lice that parasitize cattle. It is a relatively immobile with a worldwide distribution tied to domestic livestock. The species is most commonly found on the of its , particularly the . It is known by different in different regions: "little blue cattle " in the United States and "-bearing louse" in Australia.

Pronunciation
How to pronounce Solenopotes capillatus: /soː.le.noːˈpoː.teːs kaˈpɪl.la.tus/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Smallest of the five sucking lice occurring on cattle. Distinguished by its relatively immobile compared to other cattle . The species exhibits a blue coloration, referenced in its . Specific morphological features distinguishing it from other Linognathidae cattle lice require microscopic examination.
Images
Habitat
Restricted to areas with domestic livestock. Occurs on the body surface of animals, with strong preference for the region, particularly the .
Distribution
Worldwide distribution including Europe, Southern Africa, Asia-Temperate, Australasia, and Northern America. Distribution is closely tied to the presence of domestic cattle and other livestock .
Diet
Feeds on blood of animals.
Host Associations
- cattle - primary main
- Nubian ibex (Capra ibex nubiana) - documented in Israel
- mountain gazelle (Gazella gazella) - documented in Israel
Behavior
Relatively immobile compared to other cattle . Strong site fidelity to the and region of .
Ecological Role
of domestic and wild ungulates. Blood-feeding that may contribute to stress and reduced condition in heavy .
Human Relevance
Economic importance as a pest of cattle. Management considerations apply in livestock production systems.
Similar Taxa
- Linognathus vituli (Long-nosed cattle louse)Larger of cattle; S. capillatus distinguished by smaller size and -site preference
- Haematopinus eurysternus (Short-nosed cattle louse)Another cattle ; S. capillatus is smallest and least mobile of the five
- Bovicola bovis (Cattle biting louse)Different suborder (/Ischnocera); S. capillatus is a () with piercing mouthparts rather than chewing mouthparts
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- Life Cycle Details of Solenopotes capillatus (Anoplura: Linognathidae)
- Little Blue Cattle Louse Solenopotes capillatus (Enderlein) (Insecta: Phthiraptera: Anoplura: Linognathidae)
- Life Cycle Details of <I>Solenopotes capillatus</I> (Anoplura: Linognathidae)