Tomopteris rolasi Greeff, 1885

KOLBASOVA, G. D., SYOMIN, V. L., SEMPERE-VALVERDE, J., TEIXEIRA, M. A. L. & CARVALHO, S., 2025, Holopelagic Annelida from the Red Sea off the Central Saudi Arabian coast, Zootaxa 5632 (1), pp. 1-41 : 26

publication ID	https://doi.org/10.11646/zootaxa.5632.1.1
publication LSID	lsid:zoobank.org:pub:D930D2FF-45EA-494A-8837-293C590A9B1E
DOI	https://doi.org/10.5281/zenodo.15371447
persistent identifier	https://treatment.plazi.org/id/03BB8796-F849-6E6E-FF23-E8B1DAFD9D4F
treatment provided by	Plazi
scientific name	Tomopteris rolasi Greeff, 1885
status

Treatment

Tomopteris rolasi Greeff, 1885 View in CoL

( Figs 1 View FIGURE 1 , 13 View FIGURE 13 , 14 View FIGURE 14 )

Tomopteris rolasi Greeff, 1885: 438–439 View in CoL , Figs 1 View FIGURE 1 , 2 View FIGURE 2 , 5–11 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 , 17 [original description, Atlantic Ocean, Rolas Channel, Sao Thome].– Apstein 1900: 40–41 [brief description, CentralAtlantic], Malaquin et Dehorne 1907: 340, Figs 21–24 [description, Indo-Pacific, Indonesia, Ambon].– Rosa 1908: 281 [brief description and differences from other species].– Støp-Bowitz 1948: 43 [distribution, Gulf of Guinea].– Fauvel 1953: 143, Fig. 72 a [description, Indian Ocean].– Dales 1959: [distribution, Malacca Straits and South China Sea].

Material examined. One specimen: ZMMU WS20990 View Materials (FA, Et) .

Description. Body oval, elongate, 10 mm long 1 mm wide without parapodia, 4 mm wide with parapodia Tail absent, posterior ends with short cylindrical pygidium, maximum width with parapodia 3 mm, maximum width of body trunk 1 mm ( Fig. 13A View FIGURE 13 ). Live worms transparent, white in preservation, eyes red. Brain transversely oval ( Fig. 13B View FIGURE 13 ). Body with 12 pairs of parapodia, increasing in size up to 3 rd pair and then decreasing toward posterior end ( Fig. 13A View FIGURE 13 ). Prostomium with frontal cleft, prostomial horns slightly curved backward. Ciliated epaulettes long, narrow, extending to posterior margin of brain. Anterior cirri as long as the frontal horns ( Fig. 13B View FIGURE 13 ). Secondary cirri (streamers) approximately 0.85 of body length ( Fig. 13A View FIGURE 13 ). Dorsal and ventral rami of parapodia of equal length. Pinnules oval, pinnal membranes do not adnate to parapodial trunk ( Fig. 13C and D View FIGURE 13 ). Chromophile glands mammillary, loose and incompact ( Fig. 13C, D View FIGURE 13 ). They are present from 1 st pair of parapodia, but poorly visible in first two pairs (seen as 3–4 tubes with a common opening). In 3 rd pair of parapodia these tubes become arranged into well-visible chromophile glands, from 4 th pair chromophile glands occupy almost all space between ramus and inferior margin of pinnule ( Fig. 13D View FIGURE 13 ). Hyaline glands absent. Rosettes of two types. Large yellow spherical rosettes within trunks of 1 st and 2 nd parapodial pairs, near bases of dorsal rami ( Fig. 13A–C View FIGURE 13 ). Smaller yellow rosettes in dorsal and ventral pinnules of all parapodia against inner side of rami ( Fig. 13D View FIGURE 13 ). Gonads not observed.

Distribution. Type locality: Rolas Canal, Sao Thome ( Greeff 1885). Other localities: tropical and subtropical Atlantic, Indo-Pacific, Central Red Sea (this study).

Remarks. According to 18S and 28S markers, T. rolasi from the Red Sea is close to T. helgolandica ( Fig. 14 View FIGURE 14 ); nevertheless, these two species are distinctly different morphologically.