Daylithos, Salazar-Vallejo, 2012

Salazar-Vallejo, Sergio I., 2012, 3562, Zootaxa 3562, pp. 1-62 : 43

Key to species of Daylithos n. gen.

1. Body blackish; first neurohooks from chaetiger 6 (27 mm long, 77 chaetigers)......... D. cinctus ( Haswell, 1892) n. comb.

– Body greyish or pale................................................................................. 2

2(1) Far posterior chaetigers with many (4–7) neurohooks......................................................... 3

– Far posterior chaetigers with few (2–4) neurohooks.......................................................... 4

3(2) Dorsal shield flat, without middorsal depression; larger branchiae twice as wide as thinner ones (body 12–32 mm long, 59–105 chaetigers).............................................................. D. iris ( Michaelsen, 1892) n. comb.

– Dorsal shield with a middorsal longitudinal depression; larger branchiae four times as wide as thinner ones (body 18–43 mm long, 65–96 chaetigers).................................................... D. parmatus ( Grube, 1877) n. comb.

4(2) Dorsal shield with a posterior triangular projection; chaetigers 1–2 with 10–12 notochaetae per bundle (70 mm long, 95 chaetigers); chaetigers 5–6 with 3–4 aristate neurospines............................................... D. dieteri n. sp.

– Dorsal shield without posterior triangular projection........................................................ 5

5(4) Chaetigers 5–6 with 4–5 multiarticulate neurospines; body papillae arranged in single transverse rows..... D. amorae n. sp.

– Chaetigers 4–5 with 2 multiarticulate neurospines; body papillae arranged in double transverse rows............................................................................................ D. nudus ( Caullery, 1944) n. comb.