Greenhouse-introduced
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Hasarius adansoni
Adanson's house jumper
Hasarius adansoni is a small jumping spider (Salticidae) with pronounced sexual dimorphism. Females reach 8 mm, males 6 mm. Males display distinctive black coloration with a red facial 'mask', white pedipalps, and iridescent white markings on the abdomen. The species is strongly associated with human structures across tropical and subtropical regions worldwide, and has been introduced to temperate areas via greenhouses. It constructs silk retreats at night, approximately twice its body length.