Philodromus floridensis
Banks, 1904
Philodromus floridensis is a of running crab spider in the Philodromidae. It is known from the United States, with records concentrated in the eastern portion of the country. As a member of the Philodromus, it exhibits the characteristic laterigrade leg posture that permits sideways movement. The species was described by Nathan Banks in 1904.
Pronunciation
How to pronounce Philodromus floridensis: //ˌfɪloʊˈdroʊməs ˌflɔrɪˈdɛnsɪs//
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Identification
Members of the Philodromus can be distinguished from other crab spiders (Thomisidae) by their laterigrade leg orientation, which allows sideways running movement, and by their flattened body form adapted for life on bark and foliage. -level identification within Philodromus requires examination of genitalic structures under magnification. Philodromus floridensis may be confused with other eastern North American Philodromus species; accurate determination typically requires reference to original description or keys.
Distribution
United States. Distribution records from GBIF indicate occurrence in the eastern United States, though precise range boundaries are not well documented.
Behavior
A running crab spider observed to enter human dwellings, including bathrooms and showers, where individuals may become trapped in tubs or sinks due to smooth surfaces preventing escape. One documented observation describes an individual descending a shower wall and settling near the shower .
Human Relevance
Encounters with humans occur indoors, particularly in bathrooms. Individuals are not considered dangerous to humans. Encounters may cause alarm due to unexpected presence in intimate spaces, though the spiders pose no threat.
Similar Taxa
- Other Philodromus speciesCongeneric in eastern North America share similar body form and preferences; require genitalic examination for definitive separation.
- Thomisidae (true crab spiders)Also have crab-like leg posture, but move forward and backward rather than sideways; front legs typically more robust relative to body.
More Details
Taxonomic note
The specific epithet 'floridensis' suggests a Florida type locality, though the has been recorded more broadly in the eastern United States.
Documentation status
The is represented by 187 observations on iNaturalist as of source date, indicating moderate citizen science documentation but limited formal study.