Key to Species of the Genus Lamispina [Modified from Salazar-Vallejo (2014)]

1. Body papillae without sand or large sediment particles 2

— Body with sand or larger particles, at least dorsally; lamispines falcate 9

2. Body papillae stiff, tapered or conical 3

— Body papillae delicate, filiform, oΠen eroded leaving bare surfaces 7

3. Lamispines tapered, tips acuminate 4

— Lamispines subdistally widened, tips falcate 5

4. Lamispines from chaetiger 3; notochaetae abundant (9–12 per bundle); four transverse series of papillae on medial segments L. kerguelarum (Grube, 1877): Southern Indian Ocean

— Lamispines from chaetiger 4; notochaetae sparse (5 per bundle); two transverse series of papillae on medial segments L. chilensis Salazar-Vallejo, 2014: SE Pacific (Chile)

5. Cephalic cage 6× longer than body width; medial parapodia with 8 notochaetae per bundle L. carrerai Salazar-Vallejo, 2014: NE Pacific (Mexico)

— Cephalic cage 2–3× longer than body width 6

6. Medial parapodia with 5–6 notochaetae per bundle; body with 3–5 transverse series of papillae per segment L. horsti (Haswell, 1892): Southern Australia

— Medial parapodia with 10 notochaetae; body with 4–6 transverse series of papillae per segment L. gymnopapillata (Hartmann-Schröder, 1965): SE Pacific (Chile)

7. Notochaetae longer than body width 8

— Notochaetae 1/3 as long as body width; 7–8 lamispines per bundle, tips with fibers exposed; body with 2 transverse series of papillae per segment L. milligani Salazar-Vallejo, 2014: NE Atlantic (Florida)

8. Medial segments with 5–7 lamispines per bundle, tips hooded, appearing bidentate; body with 5–6 transverse series of papillae per segment L. schmidtii (Annenkova-Chlopina, 1924): Japan Sea

— Medial segments with 4–5 lamispines per bundle, tips entire, smooth; body with 8–10 transverse series of papillae per segment L. falcata (StØp-Bowitz, 1948): Norwegian Sea

9. accessory tooth in neurochaetae absent 10

— accessory tooth in neurochaetae present L. keeli Salazar-Vallejo, 2014: Gulf of Mexico (Florida)

10. Lamispines from chaetiger 2; cephalic cage as long as body width L. amoureuxi Salazar-Vallejo, 2014: NE Atlantic (off SW Ireland)

— Lamispines from chaetiger 4; cephalic cage 1.5–2.0 times as long as body width L. ammophila sp. nov.: Japan