Pelogeniinae Chamberlin, 1919

Cruz-Gómez, Christopher, 2022, Pelogeniinae Chamberlin, 1919 (Annelida, Sigalionidae) from the Grand Caribbean Region, European Journal of Taxonomy 807, pp. 1-59 : 7-8

Subfamily Pelogeniinae Chamberlin, 1919

Remarks

Claparède (1868: 415) proposed the tribe-group Polylepides to refer to worms with elytra on all segments. Lepidopleurus Claparède, 1868 was the genus originally proposed for these worms, but it is a junior homonym of Lepidopleurus Risso, 1826 (Mollusca, Polyplacophora), as a consequence Grube (1878) proposed Polylepis . Earlier, Grube (1876: 72) examined topotype Naples specimens and recognized

Lepidopleurus , noting an alternation of elytra and “branchiae” (he also referred to them as cirri) in the specimens. Two years later, Grube (1878: 16) proposed an alternative name for worms with elytra on all segments, Polylepis Grube, 1878 ; however, he doubted the steady elytral pattern of the genus. Chamberlin (1919) proposed Polylepidae based on Polylepis Grube, 1878 and included Pelogenia Schmarda, 1861 , diagnosing this family by having elytra on all segments. However, he noticed the conflict within the two genera and the diagnosis of the family group and concluded that, if Polylepis was a valid genus, it would belong to Sigalionidae , and that the name of his proposed group Polylepidae would have to be changed to Pelogeniidae ( Chamberlin 1919: 92). Hartman (1959: 117) clarified that there are no species in Polylepis , and that it should be regarded as a junior synonym of Psammolyce Kinberg, 1856 along with Pelogenia and Lepidopleurus . Finally, Pettibone (1997) revised Psammolyce and reinstated Pelogenia ; she also proposed six new genera, depart from both known genera, and placed them in the subfamily Pelogeniinae .

Key to genera of Pelogeniinae Chamberlin, 1919

(modified from Pettibone 1997; Aungtonya 2002)

1. Segment III with dorsal cirri.............................................................................................................. 2

– Segment III without dorsal cirri......................................................................................................... 5

2. Neuropodia of segment II with long filiform appendages........ Claparedepelogenia Pettibone, 1997

– Neuropodia of segment II without any appendages .......................................................................... 3

3. Ceratophore of median antenna with bulbous ctenidia; neuropodia of segment III with digitiform prechaetal extensions on acicular lobes; elytral and parapodial papillae articulated .......................... ........................................................................................................ Heteropelogenia Pettibone, 1997

– Ceratophore of median antenna may present ctenidia; neuropodia of segment III without prechaetal extensions; elytral and parapodial papillae non-articulated............................................................... 4

4. Median antennal ceratophore with lateral ctenidia; upper lip with facial tubercle large, pedunculated, bulbous.............................................................................................. Pottsipelogenia Pettibone, 1997

– Median antennal ceratophore without lateral ctenidia; upper lip without facial tubercle ................... .................................................................................................................. Pelogenia Schmarda, 1861

5. Neuropodia of segment II with long appendages; falcigers with blades tapered, bifid....................... ................................................................................................................. Psammolyce Kinberg, 1856

– Neuropodia of segment II without long appendages; falcigers with or without bifid blades ............ 6

6. Segment III parapodia with balloon-like lobes on neuropodial distal margins ................................... ............................................................................................... Hartmanipsammolyce Pettibone, 1997

– Segment III parapodia without balloon-like lobes on neuropodial distal margin.............................. 7

7. Median antennal ceratophore with lateral ctenidia; upper lip with facial tubercle stalked ................. ....................................................................................................... Dayipsammolyce Pettibone, 1997

– Median antennal ceratophore without lateral ctenidia; upper lip with facial tubercle unstalked ........ ........................................................................................................ Neopsammolyce Pettibone, 1997