Understory-predator
Guides
Phidippus arizonensis
Phidippus arizonensis is a jumping spider in the family Salticidae. Despite its name, it is not known from Arizona. Males average slightly over 9 mm in body length and exhibit a metallic blue-black coloration with a distinctive entirely yellow fringe of hairs on the front legs. Females are larger, reaching up to 13.4 mm, and have a yellowish appearance with spots and stripes on the abdomen. The species has been documented as a probable state record in Colorado, expanding its known range.
Tutelina similis
Thick-spined Jumping Spider
Tutelina similis is a small jumping spider in the family Salticidae, native to North America. Males measure 4.0–5.0 mm in body length and display striking black and white facial markings, including distinctive "eyebrow" lines behind the anterior median eyes. The species exhibits pronounced sexual dimorphism, with females being slightly larger and differently patterned. It is primarily active in June, when adults mature and hunt in sunlit patches of understory vegetation. Some populations have been documented as ant-mimics and ant specialists.