![]() | Jumping Spider - Habronattus decorus Salticidae (Jumping Spiders) / Habronattus (Pelleninae) Live adult jumping spiders photographed in the wild at DuPage County, Illinois. Insects and Spiders Home | Spiders Index | Spiders Graphics | Jumping Spiders | Beetles Index | Butterflies |
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Genus Habronattus is a large diverse genus of medium-sized salticids, primarily ground-dwellers and with highly ornamented males that perform complex courtship displays. Approximately 100 species are known, most from North America, the remainder in the neotropics. Most are ground-dwelling on open ground with sparse vegetation, especially on rocks, dry leaf litter and sand. The arid southwest has many species, but Florida also has many species, and others are known above the Arctic circle and east to maritime Canada.
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Male jumping spiders have an unusual
method of sexual intercourse: they use their palpi, the little "feelers" beside
the face. In the females, these palpi are simple and leg-like. Both
males and females use them like little hands, to manipulate food and
to clean their faces. But adult males have the palpi swollen and
more complex (that's one way to tell a male spider: adult and sub
adult males have the palpi swollen like boxing gloves). When the male is ready to mate, he spins a small web and deposits a drop of sperm on it from the underside of his abdomen. He then places the tip of the palp into the sperm, and draws the sperm through the palp's opening into the sperm duct, where it is stored. He then goes cruising for chicks. If he finds one, he performs a courtship dance for her, during which she assesses his fitness. If she accepts him, he places his palp against an opening on the underside of her abdomen (her epigynum), and guides it into place by putting a thumb-like projection, the tibial apophysis, into a groove in her epigynum. The palpus then expands, locks in place, and injects the sperm. [3] |
References
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