Lobonemoides robustus Stiasny, 1920

Aspe, Nonillon M. & James, Samuel W., 2017, Pheretima monotheca, Zoological Studies 55 (35), pp. 1-19 : 8

Lobonemoides robustus Stiasny, 1920

( Fig. 1h )

Class: Scyphozoa

Family: Lobonematidae

Genus: Lobonemoides (Light 1914)

Description: The exumbrella of this species has conspicuous, sharp papillae. The papillae are long in the apical exumbrella, short in the middle exumbrella and is absent in the marginal exumbrella. The subumbrella muscle is well developed in its intra-circular but weak in its extra-circular part. It has eight oral arms which are not coalesced with each other. Oral arms have numerous, long spindle-shaped and thread-like appendages. The canal system is comprised of 24- 32 radial canals. Rhopalar canals are visible from the base to the marginal end, forked and reached the tip of the rhopalar lappets. Inter-rhopalar canals merged into extra-circular anastomosing canals ( Kitamura and Omori 2010). The exumbrella diameter ranges from 380 to 460 mm.

Distribution and habitat: The species is commercially known as “white type ” jellyfish ( Kitamura and Omori 2010), and usually present seasonally in large numbers. It inhabits the coastal fisheries of Klang Strait and is harvested for human consumption.

Figures

Fig. 1. Jellyfish species collected in Malaysian waters. Cubozoan jellyfish; Morbakka sp. (a), Chiropsoides buitendijki (b); Scyphozoan jellyfish; Acromitus flagellatus (c), Catostylus townsendi (d), Cephea cephea (e), Chrysaora chinensis (f), Cyanea sp. (g), Lobonemoides robustus (h), Mastigias sp. (i), Phyllorhiza punctata (j), Rhopilema hispidum (k) and Rhopilema esculentum (l).