Taxon classification Animalia Zoantharia Hydrozoanthidae

15. Hydrozoanthus sp. 2 Figures 12D, 13

Specimens examined.

NA.

Photographic records

(n=1). East Kalimantan Program station BER.20, Tanjung Pandan shoal, southwest of Pulau Panjang, East Kalimantan, Berau Islands (02°19'15"N, 118°06'33"E), October 22, 2003.

Description.

Similar to Hydrozoanthus gracilis and Hydrozoanthus sp. 1 above, this azooxanthellate, colonial species is found as an epibiont on Plumularia habereri . Similar to Hydrozoanthus sp. 1, this completely white species has much smaller polyps than Hydrozoanthus gracilis, forming colonies only on the main branch(es) of Plumularia habereri colonies (Figure 12D). Polyps are much less incrusted than Hydrozoanthus gracilis .

Regions recorded in this study

(Figure 13). Berau Islands (19).

Previous records. NA.

Remarks.

This undescribed species may be a different colored morphotype of Hydrozoanthus sp. 1 (above) informally described by Di Camillo et al. (2010) as " Parazoanthus sp.". Specimens and DNA sequences are needed to properly describe this species.