🇱🇰🕷🕸Highland Ivory Ornamental Tarantula (Poecilotheria subfusca "highland"). This Montane arboreal species is native to the mountainous regions of Sri Lanka. In the hobby, P. subfusca is often categorized into "highland" and "lowland" forms. Highland subfusca are typically smaller than lowland forms and inhabit the frigid high altitude regions of the Sri Lanka mountains, while lowland subfusca generally grow larger and live at lower altitudes, tolerating higher temperatures. In captivity, "highland" subfusca seem to do best between 60f-74f. Some keepers have reported highland subfusca tolerating temps in excess if 80f, but many have also reported deaths from exposure to these temperatures. Actual measurements of burrow temperatures for subfusca highland in the wild have shown temperatures as low as 62.9 F or 17.2 C. It is my personal opinion that one should aim to keep this species as close to their natural temperatures as possible. While some sources refer to the P. subfusca "lowland" form as Poecilotheria "bara", this is in fact, an outdated and taxonomically invalid name. It can be quite difficult to accurately differentiate between the two forms within the hobby, as extensive crossbreeding has made it extremely difficult to acquire a true pure-blooded "highland" or "lowland" form, especially within the US. This species is known to be one of the most docile Poecilotheria species, but are still prone to being quite flighty and defensive if repeatedly disturbed. As with all species in the Poecilotheria genus, P. subfusca venom is considered to be medically significant, able to cause extreme pain and long-lasting systemic symptoms, and is worth taking into consideration before attempting to handle this species.