Aracia sinaloae sp. n., a new brooding, simultaneous hermaphroditic fan worm from southern Gulf of California (Polychaeta: Sabellidae) Author Tovar-Hernández, María Ana text Zootaxa 2014 3784 4 389 400 journal article 46100 10.11646/zootaxa.3784.4.3 96abf920-971e-43e2-a7e1-d38b75133830 1175-5326 229610 63F50BE8-29D0-4781-9668-9F89A9E36F7E

TABLE 1. Comparison of the three species currently recognized in the genus Aracia.

Radiolar tips (except those of the dorsalmost radioles)	Short, ~2–3 times length of distal pinnules (less than ¼ of the length of radioles)	Long, up to half length of radioles	Medium to long: ¼-1/2 of the length of radioles
Dorsalmost radioles (fertile specimens)	Modified: shorter than remaining ones, bearing pinnules only along proximal half, distal pinnules thinner and longer than those of other radioles. Radiolar tips long (½ of the length of other radioles)	Unmodified	Modified: shorter than remaining ones, bearing pinnules only along proximal half, distal pinnules thinner and longer than those of other radioles. Radiolar tips long (½ of the length of other radioles)
Dorsal lips	Short, broader than long, roughly squared, distally truncate, without radiolar and pinnular appendages	Triangular, not fused (separated), without radiolar and pinnular appendages (see comment in remarks section)	Triangular, longer than broad, not fused (separated), without radiolar and pinnular appendages
Ventral lips	Low, fused to each other	Low, fused basally to each other	Low, fused to each other
Lateral collar margin Dorsal collar margin	Oblique, not covering anterior peristomial ring Diagonal (45°) exposing the anterior peristomial ring	Oblique, not covering anterior peristomial ring Low (level) exposing anterior peristomial ring	Oblique, not covering anterior peristomial ring (live specimens), covering anterior peristomial ring (post-fixed) Diagonal (45°) exposing the anterior peristomial ring
Peristomial eyes	Rounded, black	Ellipsoid, red	Ellipsoid, red
Ventral lappets of collar	Rounded, overlapping, with a short incision (1/4 of the ventral length of the collar)	Triangular, not overlapped with a medium length incision (less than half the ventral length of collar)	Triangular, not overlapped, with a medium length incision (less than half the ventral length of collar)
Ventral shield of collar	Rectangular, as long as following thoracic shields but divided in two parts	Rectangular, as long as following thoracic shields	Rectangular, half as long as posterior thoracic shields
Thoracic notochaetae	Superior chaetae narrowly hooded, in an arc. Inferior chaetae paleate, in two rows	Superior chaetae narrowly hooded, in an arc. Inferior chaetae paleate, in single rows	Superior chaetae narrowly hooded, in an arc. Inferior chaetae paleate, in two rows
Thoracic uncini	With 4–5 rows of teeth, covering half of the main fang length	With 5 rows of teeth, covering half of the main fang length	With 6–7 rows of teeth, covering half of the main fang length
Companion chaetae	Mucro abruptly pointed	Mucro gradually pointed towards tips	Mucro gradually pointed towards tips
Abdominal neurochaetae	Elongate, broadly hooded, in two rows	Elongate, broadly hooded, in two rows	Elongate, broadly hooded, in two rows......continued on the next page