New record of two genera of trypanorhynch cestodes infecting red sea fishes in Egypt

Abstract EN

Callitetrarhynchus and Floriceps (Lacistorhynchidae : Trypanorh-yncha) belong to the less host specific genera with a wide host range.

The present study reported plerocerci of Callitetrarhynchus speciosus Linton, 1897 from Conger cinereus, Longfine African Conger (Fami-ly : Congridae) and C.

gracilis Pintner, 1931 (Family: Lacistorhynchi-dae) from five new teleost hosts of 2 different families: Lethrinus me-hsena, Sky emperor and L.

variegatus, Variegated Emperor (Lethrini-dae) ; Cephalopholis miniata, Coral grouper, Epinephe-us polypheka-dion, Small toothed grouper or camouflage grouper and Epinephelus summana, Summana grouper (Serranidae).

C.

gracilis is characterized by an elongated scolex, 2 bothria, lacking a pars post bulbosa, elon-gated bulbs, a poeciloacanthous atypical metabasal armature with 7 principal hooks, and a chainette.

Tegumental surface is covered with polymorphic microtriches: palmate (tetra, penta, hexadigitate), tricus-pidate, bifurcate and filiform.

For the first time, tufts of filamentous microtriches surrounding a cilium are recorded from C.

gracilis pro-ximal bothrial surface obtained from L.

variegatus.

Seven new host are recorded for the related lacistorhynchid Floriceps minacanthus, Lethrinus nebulosus Spangled Emperor, Lutjanus bohar 2 red spots Snapper, Lutjanus fulviflamma Dory snapper, Epinephelus polypheka-dion Small toothed grouper, E.

summana Summana grouper, Variola louti Lunartail grouper, and Spharaena qenie Blackfine Barracuda.