Habronattus decorus

(Blackwall, 1846)

beautiful ornamented jumping spider

Habronattus decorus is a small jumping spider in the Salticidae, first described by John Blackwall in 1846. Males display distinctive reddish abdominal patches covered with iridescent rose to bluish , while females lack this ornamentation and instead show dark brown stripes on a yellowish background. The occurs across northern North America, with males measuring approximately 5 mm and females slightly larger at about 6.5 mm. Like other Habronattus species, males perform elaborate multimodal combining visual signals with vibratory drumming.

Habronattus decorus edanko by Even Dankowicz. Used under a CC BY 4.0 license.Habronattus decorus edanko cropped by Even Dankowicz. Used under a CC BY 4.0 license.Male Habronattus decorus 230809730 by Zygy. Used under a CC0 license.

Pronunciation

How to pronounce Habronattus decorus: /hæbroʊˈnætəs ˈdɛkərəs/

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Appearance

Males have a body length of approximately 5 mm, with the comprising slightly more than half of total length. The is black to brownish with irregular lines of gray to white ; Florida specimens often show iridescent scales in the ocular area. The most distinctive feature is a dark reddish patch covering most of the upper abdominal surface, overlaid with iridescent rose to bluish scales. Coloration varies considerably among individuals. Females are larger, approximately 6.5 mm, with carapaces bearing fewer white hairs. Females lack the male's red pigment and iridescent scales, instead displaying dark brown stripes flanking a central yellowish abdominal area.

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