Thrixopelma cyaneolum (Cobalt red rump tarantula) (ex. Thrixopelma cyaneum)

Size Range

Sling (~1.5cm)
Juvenile (1.5cm~5cm)
Sub-adult (5cm~10cm)
Adult (10cm~)

Description

Thrixopelma cyaneolum Schmidt, Friebolin & Friebolin, 2005, also known as “Cobalt red rump”, is a stunning medium-sized bird spider due to its coloration from Peru. Because some German taxonomists are of the opinion that the name Thrixopelma cyaneum initially used is not available, it is later in 2005 being replaced by the new name Thrixopelma cyaneolum sp.n.

The rather dull colors at early age become more vibrant while growing up, showing an overall marineblue shiney coloration with deep red abdominal setae. Sad but true those colors fade away as time passes since the last molt. With the exception of the bright blue femura, other leg segments do show some beautiful lining, similar to the far more famous Aphonopelma seemanni.

Beginning hobbyists often confuse those 2 spiders (Aphonopelma seemanni), but there is a little trick. Thrixopelma cyaneolum shows a reflective patch of urticating setae on the abdomen, which is different to the neutral abdomen of Aphonopelma seemanni.

Credit: https://www.theraphosidae.be/en/thrixopelma-cyaneolum/

ABOUT SIZES

In Tarantula life cycle, there is only eggs, spider-ling and adult.

However for pricing convenience, this is a personal rule of thumb, obviously this varies on the species of tarantula.
1. Sling (1cm~2cm)
2. Juvenile (2cm~7cm)
3. Sub adult (7cm~10cm)
4. Adult (10cm~12cm+)

It varies on species as some adults may only reach a few centrimeters while others may get (20cm~25cm+)