About Arkys lancearius Walckenaer, 1837
This species, Arkys lancearius Walckenaer, 1837, shows clear sexual size dimorphism: males have a body length of roughly 5.5 millimetres (0.22 inches), while females reach around 8 millimetres (0.31 inches) in body length. The body colour ranges across yellow, orange, and red, and bears pale, jewel-like markings on the heart-shaped abdomen. Females produce egg sacs in January or February. These egg sacs are deep pinkish cream in colour, typically around 8 mm in diameter, and covered in lighter-coloured threads. Each egg sac holds approximately 70 eggs, and each individual egg measures 0.7 mm in diameter.
