Algidia chiltoni

Algidia chiltoni chiltoni has the general characteristics of Algidia but most closely resembles A. c. longspinosa and A. c. oconnori. The tubercles (pointed protuberances) on the eyemound of A. c.chiltoni males are shorter and more numerous than those found in A. c. longispinosa and shorter and less numerous than those of A. c. occonori. Males can also be separated by the nature of the tubercles on the rear margin of the scutum (the unsegmented portion of the carapace) and the free tergites (the segmented rear area). These are thicker in A. c. chiltoni than in the other two subspecies, with A. c. longispinosa having fewer tubercles on the rear margin of the scutum and the first two free tergites than A. c. oconnori. The femur of the male pedipalp has a proximo-dorsal (upper surface, near the body) swelling with a spinous tubercle similar to A. c. longispinosa, but not present in A. c. oconnori. However, the dorsal tubercles are shorter, while the ventral tubercles are both shorter and less numerous than in A. c. longispinosa. The female pedipalp shares these two characteristics, allowing them to be distinguished from females of A. c. longispinosa (with females of A. c. oconnori unknown).

Algidia chiltoni chiltoni is found as far north as Auckland in the North Island, Stephens Island at the northern tip of the Marlborough Sounds, and in the Tasman region and northernmost part of the West Coast region of the South Island. It is sympatric with both A. c. longispinosa and A. c. oconnori.