Phormingochilus pennellhewlettorum

Few arboreals carry colour the way Phormingochilus pennellhewlettorum does — a dark body overlaid with a metallic blue-violet wash across the legs that shifts between deep indigo and cool purple as the light moves, like oil on dark water. It is a large, fast tree-dweller from the humid forests of Sabah in Malaysian Borneo, and the iridescence reads as immediate and saturated rather than subtle, the kind that stops the eye before the mind catches up.

This is a species that uses vertical space with conviction. Like the rest of the genus, Phormingochilus pennellhewlettorum moves decisively, anchors a silken tube retreat high in the enclosure, and emerges to hunt with the confidence of an animal that knows its territory exactly. Appetite is strong and consistent, which makes reading its condition straightforward once you settle into its rhythms.

Orient the enclosure vertically and furnish it with cork tube or cork bark placed high, giving the spider an obvious anchor point for its retreat. Keep humidity elevated through regular misting, and pair it with steady cross-ventilation — stagnant air at these moisture levels is where problems begin. A temperature range of 24–28°C suits the species, and a water dish at the base rounds out the setup.

Phormingochilus pennellhewlettorum belongs in the collection of a keeper who has moved past novelty and is building around animals with real visual and behavioural weight. Years on, this is the specimen that still draws a second glance every time it leaves the retreat — a fast, jewel-toned arboreal that earns its shelf space and keeps earning it.