Jasmineira Langerhans, 1880
Jasmineira sp. 2
Voucher specimens. Sea Lion: stations 79MFB.
Diagnosis. Small species; body complete (branchial crown missing), body 7.5 mm long and 0.75 mm wide; 8 thoracic and 18 abdominal chaetigers (variation in other specimens, 18-20); chaetigers never bead-like, always wider than long, never crowded posteriorly; colour in alcohol pale yellow. Branchial crown missing, typical Jasmineira-abscission zone observed (around 10 pairs of radioles estimated on basal attachments observed).
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 6 per fascicle and paleate (mucronate) inferior chaetae with long mucron, about 4 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 10 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; around 10 in most abdominal segments, rapidly diminishing in posteriormost segment to 4 and then 1 (in the last segment); each uncinus with several rows of similar-sized teeth, occupying half the length of the main fang.
Pygidium small, triangular lobe; pygidial eyespots not observed. Tube not observed.
Remarks. See Jasminiera page for comparisons of the species found.
