Ocellata see apharyngeate cercaria

ocellate a. [L. dim. oculus, eye] Eye-like; spotted; having ocelli or eye-like spots.

ocellus n.; pl. ocelli [L. dim. oculus, eye] 1. The simple eyes or eyespots, occurring singly or in small groups, found in many invertebrates. 2. (ARTHRO: Crustacea) see nauplius eye. 3. (ARTHRO: Insecta) see stemma, ommata. 4. (MOLL: Polyplacophora) see aesthete.

ochraceous a. [Gr. ochros, yellow brown] Pale yellow; brownish-yellow.

ochroleucous a. [Gr. ochros, yellow brown; leukos, white] Yellowish; whitish yellow; buff.

octactine a. [Gr. okto, eight; aktis, ray] (PORIF) A modified hexactine spicule with 8 rays.

octamerous a. [Gr. okto, eight; meros, part] (CNID: Anthozoa) Organs or parts of organs arranged in series of 8.

octoploid a. [Gr. okto, eight; aploos, onefold] Cells having 8 chromosome sets in the nucleus (8n).

octopod a. [Gr. okto, eight; pous, foot] Bearing 8 tentacles, feet or arms. octopody n.

octoprostatic a. [Gr. okto, eight; prostates, one who stands before] (ANN: Oligochaeta) Having 8 prostates.

octothecal a. [Gr. okto, eight; theke, case] (ANN: Oligochaeta) Having 8 spermathecae.

ocular a. [L. oculus, eye] Of or pertaining to the eyes.

ocular bulla (ARTHRO: Crustacea) A knob on the inner surface of the carapace joining the lower and upper orbital margins with the basal segment of the antenna; functioning to protect the eye.

ocular emargination (ARTHRO: Insecta) In Mallophaga, a lateral emargination of the head in front of the eyes.

ocular fleck (ARTHRO: Insecta) In Mallophaga, a black spot in the eyes.

ocular fringe (ARTHRO: Insecta) In Mallophaga, small hairs on the posterior half of the ocular emargination, may extend on the temporal margin.

ocularium n.; pl. -ia [L. oculus, eye] (ARTHRO: Insecta) 1. The area around the simple eye or eyes of larvae. 2. In Hymen-optera sawflies, the pigmented area.

ocular lobe (ARTHRO: Insecta) On some Coleoptera, a projecting thoracic lobe.

ocular papilla (ARTHRO: Crustacea) In some Malacostraca, the anterior projection on the eyestalk.

ocular peduncle (ARTHRO: Crustacea) A movable peduncle (eyestalk) with a compound eye at the distal end, sometimes with two or three segments, sometimes retractable.

ocular plates (echinod: Echinoidea) Plates at the terminal end of the ambulacral areas.

ocular sclerites (ARTHRO: Insecta) 1. In some Pseudococci-dae, well developed sclerites extending completely around each side, each bearing a row of 7 simple eyes near anterior margin, plus a single lateral ocellus on each side behind the mid-lateral member of the anterior row. 2. An annular sclerite surrounding the compound eyes.

ocular seta (ARTHRO: Insecta) In Diptera, one of several setae occurring in a line near the posterior margin of each compound eye.

ocular sinus (MOLL: Cephalopoda) In the Nautilus , an opening on the lateral shell margin accommodating the normal arc of vision of the eyes.

ocular suture (ARTHRO: Insecta) An annular inflection surrounding the compound eyes.

ocular tube (SIPUN) A tubular depression in the brain containing the pigment of the eyespots or eyes.

ocular tubercles (ARTHRO: Insecta) In Hemiptera, supplementary eyes with prominent facets on the posterior area, in addition to the compound eyes.

oculiferous a. [L. oculus, eye; fero, bear] Bearing eyes.

oculomotor a. [L. oculus, eye; movere, to move] The nerve center of muscle that moves the eye.

oculus n.; pl. oculi [L. oculus, eye] The eye; a spot shaped like an eye.

odona a. [Gr. odous, tooth] Having teeth.

odonate a. [Gr. odous, tooth] (ARTHRO: Insecta) Of or pertaining to the Odonata.

odontium n. [Gr. odous, tooth] (NEMATA) The stomatal armature generally in the form of a tooth or teeth originating from the anterior stoma (cheilostome). see onchium.

odontoblast n. [Gr. odous, tooth; blastos, bud] (MOLL: Gastropoda) Cells in the radular sac that secrete the radular teeth.

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