First record of the family Pseudocerotidae (Platyhelminthes, Polycladida, Cotylea) from the Persian Gulf, Iran Author Khalili, Zahra ,, Author Rahimian, Hassan University of Tehran, Teheran ,, Author Pazooki, Jamile University of Shahid Beheshti, Tehran ,, text ZooKeys 2009 2009-12-28 31 3 39 51 journal article 10.3897/zookeys.31.136 49c3d9a6-da82-4665-bf2f-c2f3e7f40ae4 1313–2970 576580 Tytthosoceros lizardensis Newman and Cannon 1996 Type location: Heron Island, southern Great Barrier Reef, Australia . Type specimen: Queensland Museum, Brisbane, Australia WM QM (G 210716 ). Specimens examined: ZUTC Platy 1001, 1002. Fifty-six specimens of this species were collected from two locations (Stations No. 1 and 2, Fig. 1, Table 1). Most specimens were found in groups of up to 20 individuals, under rubble in intertidal pools, and on an orange sponge ( Clione vastifera ). Most specimens autolysed during sampling or fixation and only four specimens remained intact after fixation procedure. The following description is based on those four specimens. Figure 2. Specimen of Tytthosoceros lizardensis in vivo. Figure 3. Ear-like pseudotentacle in Tytthosoceros lizardensis : te pseudotentacular eyes ce cerebral eyes. Description . Sizes of specimens range from 22 × 38 to 30 × 46 mm ; background color variable, mottled light brown or olive green with cream mottling composed of dots, forming loose transverse streaks medially and laterally, darker medially sometimes with a tinge of light brown medially and on the pseudotentacles; narrow marginal bands, black then grey interrupted with short white transverse streaks of microdots at rim; submargin narrow, either cream or transparent grey ( Fig. 2 ); pseudotentacles earlike, small, cream with mottling of light brown or olive between ( Fig. 3 ); 70–80 cerebral eyes, arranged like a horseshoe, dorsal pseudotentaclular eyes, scattered, with about 35 eyes ( Figs 3 and 4 ); ventral surface of specimens cream with black rims, and very ruffled margins; anterior pharynx large and ruffled, 1/5 of the body length (8.6 mm), associated with 5–6 pairs of pharyngeal folds; mouth situated in the middle of the pharynx ( Fig. 6C ); intestine extending posteriorly, but not to the margin of the body; male and female gonopores posterior to pharynx, distinct sucker in mid-body proper ( Fig. 5 ). Anatomy of Reproductive System ( Figs 6A, B , 7 ). Testes scattered throughout the body, vas deferens forming a network of thin tubes; single male copulatory apparatus with rounded-oblong seminal vesicle (456 × 336 µm ), oval prostate oriented anterodorsally (120 × 96 µm ), deep male antrum ( 192 µm ), penis papilla with short stylet (120 × 72 µm ); female copulatory apparatus with wide female atrium ( 120 µm ) and cement glands.