Prionospio , Maciolek 1985
Creators: name: Delgado-Blas, Víctor H.
name: Fonseca-González, Idalyd
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Spionida
Spionidae
Prionospio

description: Key to known species of Prionospio with five pairs of branchiae
(Modified from Delgado-Blas 2014)
1. Dorsal crests or folds on several postbranchial chaetigers..................................................... 2
- Dorsal crests or folds absent............................................................................. 4
2. Prostomium triangular-shaped; anterior neuropodial prechaetal lamellae large............ P. heterobranchia Moore, 1907
- Prostomium bottle-shaped; anterior neuropodial prechaetal lamellae very small.................................... 3
3. Prostomium with small medial peak in dorsal region, neuropodial postchaetal lamellae of chaetiger 1 very small, much smaller than 1/3 the size of the notopodial lamella; branchial pairs 2 and 3 cirriform; low dorsal ridges across the dorsum on chaetigers 8–29; sabre chaetae in neuropodia from chaetigers 12–13……………….......................... P. gabriellae sp. nov.
- Prostomium without small medial peak in dorsal region, neuropodial postchaetal lamellae of chaetiger 1 large, almost the same size as the notopodial lamellae; branchial pairs 2 and 3 triangular; low dorsal ridges across the dorsum on chaetigers 7–15; sabre chaetae in neuropodia from chaetigers 14–15..................................... P. caribensis Delgado-Blas, 2014
4. Neuropodial postchaetal lamellae on chaetiger 2 rounded, square or rhomboid; anterior notopodial and neuropodial lamellae overlapping or touching................................................................................ 5
- Neuropodial postchaetal lamellae on chaetiger 2 subrectangular, with dorsally directed process, the lower corners rounded; anterior notopodial and neuropodial lamellae separate............................... P. rosariae Delgado-Blas, 2014
5. Prostomium with a small medial peak on anterior margin; neuropodial lamellae on chaetiger 3 subtriangular; anterior neuropodial prechaetal lamellae large; ventral and dorsal edges of the notopodial and neuropodial lamellae overlapping on chaetigers 2–8; hooks without secondary hoods.................................................... P. newportensis Reish, 1959
- Prostomium without small medial peak; neuropodial lamellae on chaetiger 3 rounded or square; anterior neuropodial prechaetal lamellae short; ventral and dorsal edges of the notopodial and neuropodial lamellae overlapping or touching on chaetigers 2–4; hooks with secondary hoods. …………………………………………...………….. 6
6. Prostomium anteriorly rounded; peristomium long; neuropodial lamellae on chaetiger 2 square or rhomboid; anterior notopodial chaetae not granulated; hooded hooks with 2–3 pairs of teeth................................................... 7
- Prostomium anteriorly truncated; peristomium short; neuropodial lamellae on chaetigers 2–3 rounded; anterior notopodial chaetae granulated; hooded hooks with 4 pairs of teeth.................................... P. texana Hartman, 1951
7. Neuropodial lamellae rhomboid on chaetiger 2 and rounded on chaetiger 3; sabre chaetae without sheaths; hooded hooks with 2–3 pairs of teeth...................................................... P. spongicola Wesenburg-Lund, 1958
- Neuropodial lamellae on chaetigers 2–3 square; sabre chaetae with sheaths; hooded hooks with 3 pairs of teeth................................................................................... P. jamaicensis Delgado-Blas, 2014
description: Published as part of Delgado-Blas, Víctor H. & Fonseca-González, Idalyd, 2023, Two new species of spionids from the genera Apoprionospio Foster, 1969 and Prionospio Malmgren, 1867 (Annelida: Spionidae) from the Colombian Caribbean, pp. 158-172 in Zootaxa 5256 (2) on pages 169-170, DOI: 10.11646/zootaxa.5256.2.4, http://zenodo.org/record/7745509