Table 1 Review of the characters from synonymized taxa of Thysanozoon brocchii
From: First record of Thysanozoon brocchii (Platyhelminthes: Polycladida) from Indian waters
| Synonymized taxa | Body form | Colour -pattern | Eye spots/arrangement | Habitat/Locality | Remarks |
|---|---|---|---|---|---|
| Tergipes dicquemare Risso, 1818 |
oblong, flattened, Dorsal: covered with many sessile papillae serving as respiratory organ, tentacles earlike, Ventral: greyish |
Dorsal White- yellowish Intestinal canal - white –reddish | - |
Under stone Nice sea, France | - |
| Planaria tuberculata Delle chiaje, 1828 |
compressed, ovate, wide Dorsal: papillate; absent towards margin, longitudinal median line present |
Dorsal Papillae: few with white dots, median line white colour Margin: white band even on pseudotentacles | - |
Algae dweller Naples, Italy |
Not identical to Planaria brocchii described by Risso 1818, although has certain similar characters in body colouration |
| Thysanozoon tuberculatum Delle Chiaje, 1828 |
Elliptical Dorsal: long tentacles, median papillae with conical tip |
Dorsal: Blackish Papillae: median with white tip and bluish at the base | - | Found among algae | - |
| Planaria verrucosa Delle chiaje, 1829 | Dorsal: papillate; more on back and smaller towards margin |
Dorsal Margin: milky white and black | - | Naples, Italy |
differs from P. tuberculata being small, colourful margin without papillae and papillae bears white dots at the tip |
| Stylochus papillosus Diesing, 1836 |
½ - 1-1/2 in. narrows ovate flattened Tentacles: filament like, medially raised (keel on the middle) Papillae: numerous papillae present on the keel area | Dorsal: light yellow or reddish-brown keel: white | Indefinite number on the disc shape bright spot | Adriatic Sea | - |
| Thysanozoon diesingii Grube, 1840 |
flat, leaf like Dorsal: covered with papillae (pedicels) |
Dorsal: longitudinal bright yellowish line Margin: white with purple dash lines | Eye spots 31–28 |
Palermo-Italy east coast of Ceylon (Sri-Lanka) Indian Ocean |
compared with Mediterranean P. brochii and P. tuberculata
and mentioned the similarity with P. brochii except for the absence of papillae opening |
| Planaria dicquemari Delle Chiaje, 1841 | Papillae: larger in the middle and smaller towards margin |
Dorsal: Yellow, blackish speckled Margin: whitish | In two groups at the base of the tentacles |
differs from P. tuberculata (Delle Chiaje, 1828) in terms of size, papillae and colour | |
| Thysanozoon diequemaris (Delle Chiaje, 1841) Diesing, 1850 |
Elliptical, Papillae: long, conical, tentacles somewhat sickle shape |
Dorsal: Body greyish Papillae: yellowish white Ventral: Grey | - | In stones- Mediterranean Sea | - |
|
Eolidiceros brochii
Quatrafages, 1845 |
regularly elliptical, slightly curved in the middle Tentacles: triangular, Papillae (appendages): fusiform, longer and bigger and smaller towards edges Size: 18 mm |
Dorsal: light yellowish brown, edges are transparent and bluish Upper side of the head region is white; tinted with greenish, sides are light brown Papillae: reddish-brown but tip is yellowish white; blackish purple dots all over the surface |
Numerous CE: 20–25 TE: group of 5–6 eyespots between the tentacles |
In Fucus
Naples | May be similar to Planaria tuberculate (Delle Chiaje, 1828) |
| Eolidiceros panormis Quatrefage, 1845 |
elliptical, triangular head and straight large tentacles Dorsal: papillate (cylindrical appendages) Size: 6 mm × 3 mm |
Dorsal: mid region yellow-greenish speckled with brown, head region white, anterior end with purple and brown pigments, transverse pale yellow band present 1/3 posterior of the body Papillae: similar colour like body but less numerous than E. brocchii Margin: brown speckled and purple dashes |
Dorsal: 3 large eyespots surrounded by smaller ones; one is posterior and two are at the base of the pseudotentacles Ventral: arranged between and at the base of the pseudotentacles |
on rock Palermo, Italy | Compared with E. brocchii for eyespots, body shape, colour pattern and arrangement of dorsal papillae |
| Thysanozoon fockei Diesing, 1850 |
Sub elliptical Dorsal: papillated | Papillae: yellow-purple papillae | - | Tergesti, Italy | - |
| Planeolis panormus, Stimpson 1857 | Papillae: scattered over the body; head larger and with large tentacles | - | ocelli on the tentacles at the base of the tentacles and between the tentacles | - | information about genus is given but refers to Eolidiceros panormus Quatrefage, 1845 for the species description |
| Thysanozoon sp. (Eolidiceros quatrefages) Moseley, 1877 | Size: when expanded 10 cm × 6 cm | Dorsal: dark purple, tubercles with white tip | - | Zamboangan, Philippines | |
| Thysanozoon brochii var. cruciatum Laidlaw, 1906 | Size: 8–16 mm | Dorsal: yellow-dark gray, narrow longitudinal white stripe and 1/3 posterior transverse band present | - |
under rock Porto Praya, Cape Verde Island | - |
| Thysanozoon lagidium Marcus, 1949 |
Dorsal: papillate Size: 13x7mm |
Dorsal: Grayish brown-purplish Papillae: darker, few with white tip light coloured papillae forming longitudinal stripe and medial transverse stripe present | - | Brazil | - |
|
Thysazonoon cf. lagidium Quiroga et al. 2004
Based on image presented in the paper | - |
Dorsal Papillae: black- brown midline papillae whitish; whitish papillae forming cross are present around 1/3rd of body length | Coloumbia; Brazil | - |