Pholoe, Johnston, 1839

Key to all species of Pholoe View in CoL

1. Prostomium oval..................................................................................... 2 Prostomium otherwise................................................................................ 12

2(1) Eyes present......................................................................................... 3 Eyes absent......................................................................................... 4

3(2) Lateral antennae present............................................................................... 5 Lateral antennae absent................................................................................ 6

4(2) Lateral antennae present............................................... P. courtneyae Blake, 1995 View in CoL (Pacific, USA) Lateral antennae absent............................................. P. anoculata Hartman, 1965 View in CoL (Atlantic, USA)

5(3) Elytral surface with papillae becoming less numerous towards the posterior body region.................................................................................................. P. longa (O.F. Müller, 1776) (Danish) View in CoL Elytral surface with a uniform number of papillae throughout the body........................ P. baltica Örsted, 1843 View in CoL .

6(3) Neuropodium with globular papillae...................................................................... 7 Neuropodium without globular papillae................................................................... 8

7(6) Elytra not covering the mid-dorsal region................................... P. minuta Fabricius, 1780 View in CoL ) ( Greenland) Elytra covering the mid-dorsal region..................................................................... 9

8(6) Neuropodium with stylodes............................................. P. glabra Hartman, 1961 View in CoL (Pacific, USA) Neuropodium without stylodes......................................................................... 11

9(7) Elytral margin and surface with few conical papillae, with fine and elongated tips..... P. fauveli Kirkegaard, 1983 View in CoL ( France) Elytral surface smooth................................................................................ 10

10(9) Elytra surface unpigmented; Papillae on the outer border cylindrical................. P. petersenae Ravara View in CoL & Cunha, 2016 Elytral with brackish pigment on the elytra Insertion; papillae on the outer margin large and filamentous........................................................................... P. minutissima Hartmann-Schröder, 1980 View in CoL ( Australia)

11(8) Tentacular cirrus without papillae............................................. P. assimilis Örsted, 1845 View in CoL ( Norway) Tentacular cirrus with papillae................................... P. polymorpha ( Hartmann-Schröder, 1962) View in CoL ( Chile)

12(1) Prostomium subtriangular; elytra with nine rows of radial papillae in the latero-posterior region of the dorsal surface, two to five papillae per row................................................ P. chinensis Wu, Zhao & Ding, 1994 View in CoL ( China) Prostomium triangular; elytra otherwise.................................................................. 12

12(11) Eyes absent............................................................ P. pallida Chambers, 1985 View in CoL ( England) Eyes present........................................................................................ 13

13(12) Neuropodium with stylodes............................................................................ 14 Neuropodium without stylodes......................................................................... 15

14(13) Lateral antennae absent...................................................... Pholoe amandae sp. nov. ( Brazil) Lateral antennae present.................................... P. microantennata Padovanni & Amaral, 2013 View in CoL ( Brazil)

15(13) Anterior elytra with marginal papillae, becoming submarginal on median and posterior elytra....................................................................................... P. inornata Johnston, 1839 View in CoL (Northwest Atlantic) Elytra otherwise.................................................................................... 16)

16(15) All neurochaetae with subterminal spines on the shaft of equal length in all chaetae................................................................................................ P. spinosa Hartmann-Schröder, 1991 View in CoL ( Australia) Lowermost bundle of neurochaetae with spines on the subterminal region of the shaft longer than those on the upper neurochaetae....................................................... P. toumatuensis Hartmann- Schröder, 1992 .