Pseudoboletia maculata

Stained collector urchin
Pseudoboletia maculataPseudoboletia maculata, NSW, Australia, Photo: Ian Shaw
Pseudoboletia maculataPseudoboletia maculata, NSW, Australia, Photo: Ian Shaw
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Pseudoboletia maculata
Pseudoboletia maculata


Tropical Indo-Pacific


Cream coloured with patches of brown on the spines and test, frequently found with rubble or detritus attached by tube feet. Distinguished from the similar Pseudoboletia indiana by darker blotching and lack of purple tips to the primary spines.


Max Size: 8 cm

Sea Temperature Range: 19.9-26.1°C

Depth: 70

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Frequent (15.8% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Few (2 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Further Information