Jasmineira Langerhans, 1880
Jasmineira sp. 3
Voucher specimens. Sea Lion: station 5MFC
Diagnosis. Medium sized species; body complete (branchial crown missing), body 15mm long and 0.9mm wide; 8 thoracic and 30 abdominal chaetigers (variation in other specimens, 30-34); chaetigers never bead-like, always wider than long, not crowded posteriorly; colour in alcohol pale yellow. Branchial crown missing, typical Jasmineira-abscission zone observed (about 15 pairs of radiolar bases observed, as radioles are missing, not able to distinguish radioles and ventral radiolar appendages).
Collar is well-developed; much higher ventrally than dorsally, with smooth anterior margin, and ventrally with an obvious mid-ventral notch; dorsally forming two deep pockets with vascular coils; dorsally not overlapping at midline. Peristomial eyes absent. Narrow glandular ridge around chaetiger 2.
Collar chaetae narrowly-limbate (hooded) arranged in oblique vertical rows. Following thoracic chaetigers with limbate (hooded) superior chaetae, about 8 per fascicle and paleate (mucronate) inferior chaetae with long mucron, about 8 per fascicle. Thoracic neuropodial uncini acicular, with several rows of minute, similar-sized teeth covering half the length of main fang; reducing in number from chaetiger 2 with about 15 uncini in a row to 5 in chaetiger 8 (the last thoracic chaetiger). Companion chaetae absent. Abdominal chaetigers with few elongate, narrowly-limbate (hooded) chaetae. Abdominal uncini with reduced breast (S-shaped), elongated, diminishing number posteriorly with several rows of similar-sized teeth, occupying half the length of the main fang.
Posteriomost chaetigers gradually narrowing into sharp triangular pygidial lobe bearing short terminal cirrus; pygidial eyespots not observed. Tube not observed.
Remarks. See Jasminiera page for comparisons of the species found.
