relatively common colorful jumping spider north_america males forms rare phenomenon use different displays differ appearance black body black head pale legs gray black white stripes body legs orange form accounts adult males equally successful mating female millimetres long males millimetres long like jumping spiders excellent vision main eyes center position large acute cat times acute remaining pairs eyes sides head work motion eyes hunting avoiding threats finding mates jumping spiders predators insects spiders species genus species called names male forms look behave differently originally considered distinct species chose standard species found west southern canada united_states distribution forms crescent north mid west new_england south florida able establish man structures fences taxonomy type species genus includes species species derived latin cruel harsh rough species called names including male forms look behave differently originally considered distinct species chose standard description spiders differ usual body segments fused abdomen spiders bear modified silk types silk abdomen abdomen joined small cylindrical allows abdomen spinning silk jumping spiders build catch prey use silk purposes including laying eggs jumping spiders large short powerful legs unlike spiders muscles limbs instead extend increasing blood pressure jumping spiders leap times length extending fourth pairs legs reaching millimetres extended grasp prey spiders maintain balance walking legs moving legs surface run faster spiders increase stride frequency spiders pair mouth spiders modified poison prey mouth pair short male spiders large displaying mating spiders groom regularly wet dirty draw legs time legs fourth pairs legs groom parts body place appear reach dorsal surface body sparsely covered hairs scales female millimetres long light brown legs pale unmarked abdomen colored black band covered orange scales series shaped markings middle abdomen prominent white stripe foremost eyes spines second pair legs body hair males millimetres long light dark brown black line edge usually pair large lighter areas pair eyes halfway eyes surrounded black males occur forms rare phenomenon totally black body black white legs gray male black white striped body prominent white stripe foremost eyes striped legs bright orange jumping spiders distinctive rectangular female average millimetres wide males average millimetres fairly high width senses jumping spiders eyes large ones center position anterior median eyes referred principal eyes providing acute vision housed tubes head secondary eyes positioned sides acting mainly movement spiders jump including spiders good vision main eyes acute daylight cat times acute main eyes focus accurately object distances approximately centimetres infinity centimetres row secondary eyes slightly wider width width point like spiders sensors modified smell taste touch vibration protruding cuticle skin unlike insects spiders antennae feeding jumping spiders predators insects spiders common procedure sighting prey stalking silk safety line surface pairs legs jump victim finally biting prey jumping spiders walk day maximize chances catch reproduction accounts adult males number attempts court females different display looking mate male spider spins small flat web surface loads like searches female sighting female pushes high possible pair legs foremost pair time waving swinging abdomen usually centimetres female contrast gray points foremost pairs legs directly forward crosses tips legs creating triangle like configuration holds orange colored beneath forward eyes forth stationary semi circles female centimetres away movements identical later sequence receptive females respond similarly male types approach settle extend foremost pair legs tap male typically end initial display start leg dancing males females look display greater number tap displays gray females respond settling gray males females look males gray males approach female male females tip finally male mounts female afterward male generally pair usually run away male chases female tries experiment gray males females courtship end females tried capture eat males experiment gray male killed count offspring showed differences numbers gray males got females attention quickly centimetres males quicker centimetres females continuation male example mixed stable strategy genetically determined fathers equally successful different ways distribution habitat found eastern mid west united_states south west canada including massachusetts connecticut new_york state new_jersey pennsylvania maryland west_virginia virginia north_carolina florida alabama louisiana texas kansas kentucky indiana illinois michigan wisconsin quebec study reported mature recently clear cut sites southern near highlands north_carolina specimens spiders hunt collected plants ground clear cutting caused marked decrease abundance species marked increase species showed change jumping spider species including able establish man structures spiders found structures fences permanently inhabited houses
Maevia inclemens