Habronattus arcalorus
Maddison & Maddison, 2016
Habronattus arcalorus is a small jumping spider in the Salticidae, described by Maddison & Maddison in 2016. The Habronattus is one of the largest genera of jumping spiders in North America, with approximately 100 , most occurring in the southwestern United States where diversity is highest. Species in this genus are characterized by elaborate multimodal courtship involving both visual displays and vibratory signals. Males of related species possess modified third legs with conspicuous spurs or ornamentation used in .
Pronunciation
How to pronounce Habronattus arcalorus: /ˌhæbroʊˈnætəs ˌɑrkəˈloʊrəs/
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Identification
Identification of Habronattus arcalorus specifically requires examination of morphological details not provided in available sources. The Habronattus can be distinguished from other salticid genera by male courtship : males have modified third legs (often with spurs, brushes, or bright coloration) used in visual displays to females, rather than the heavily decorated first legs seen in many other jumping spider genera. Related such as H. cuspidatus possess a large spur on the "knee" joint of the third leg visible with magnification.
Habitat
Based on -level patterns, Habronattus occur mostly on the ground in areas of scattered vegetation, prowling on stones or amid leaf litter. They are frequently found in prairie and areas with sparse ground cover.
Distribution
Recorded from USA and Mexico; present in Middle America and North America. The Habronattus shows highest diversity in the southwestern United States, with ranging above the Arctic Circle and east to coastal Canada.
Behavior
Males of Habronattus perform complex multimodal courtship combining visual and vibratory signals. Males drum or tap to create substrate vibrations synchronized with visual displays, crouching to maximize visibility of modified third legs. The vibratory signals have been described as compositionally complex, likened to orchestral music. This represents one of the most elaborate courtship systems known in terrestrial . Habronattus jumping spiders are nomadic hunters that rely on acute vision rather than webs to locate prey.
Similar Taxa
- Euophrys monadnockBoth are small, colorful jumping spiders found in similar in Colorado and surrounding regions. Euophrys monadnock males have bright orange on legs III and IV and black hair brushes on front legs, but belong to a different with different courtship .
- Habronattus cuspidatusCongeneric with similar size and ground-dwelling habits; males distinguished by a large spur on the knee joint of the third leg used in .
More Details
Taxonomic note
Habronattus is a large of approximately 100 , most occurring in North America with the remainder in the neotropics. The genus was established by F.O.P.-Cambridge in 1901.
Research significance
The Habronattus has been extensively studied for its complex courtship , which may represent the most elaborate multimodal signaling system in any terrestrial .