Parapinnanema Inglis, 1969

Semprucci, Federica & Sørensen, Martin V., 2014, A new species of Parapinnanema (Nematoda, Chromadoridae) from Dr Theodor Mortensen’s Pacific Expedition 1914 – 16 with an identification key to the genus, Zootaxa 3881 (6), pp. 501-512 : 503-504

Genus Parapinnanema Inglis, 1969

Emended diagnosis ( Gourbault & Vincx, 1994): Thick cuticle on the pharyngeal region; amphids with surrounding fringe of cuticle; buccal cavity conical with one dorsal and two subventral plates; one large pointed tooth on the dorsal plate and three denticles plus a ventral tooth on each subventral plate; tail conico-cylindrical; raised precloacal and caudal modifications of the cuticle in males; elongated vulva, vagina opening wide, an internal double sphincter around the uterine chamber.

Number of species: 11

Type species: Parapinnanema wilsoni Inglis, 1969

List of valid species: The present list of valid species is in accordance with Gourbault & Vincx (1994). For each species taxonomical notes and geographical distribution are provided.

P. alii ( Murphy, 1965) ; Murphy, 1965:154, Fig. 155 a–b [ Nygmatonchus alii ]; Inglis, 1969: p 187 ( Austranema alii n. comb.), 195–197, Figs 38–40; Warwick & Coles, 1975: p 405 ( Parapinnanema alii n. comb.); Gourbault & Vincx, 1994: 153–155, Figs 8,9; Tchesunov (2014): 377 (erroneously reported as valid Austranema alii ); Maldives, New Caledonia, Australia, Chile.

P. bableti Gourbault & Vincx, 1994 ; Gourbault & Vincx, 1994:142 –147, Figs. 1 –4; Polynesia.

P. c o l e s i ( Inglis, 1968); Inglis, 1968:36–37, Figs 6–13 [ Euchromadora colesi ]; Inglis, 1969: p 187 ( Austranema colesi n. comb.); Warwick & Coles, 1975: p 405 ( Parapinnanema colesi n. comb.); Tchesunov (2014): 377 (erroneously reported as valid Austranema colesi ); New Caledonia.

P. harveyi Warwick & Coles, 1975 ; Warwick & Coles, 1975: 409 –411, Fig. 3 a–f; Isles of Scilly.

P. imbricata Belogurov, Belogurova & Smolyanko, 1985 ; Belogurov et al., 1985:50 –54, Fig. 1 ; Sea of Japan.

P. mexicanum ( Jensen, 1986) ; Jensen, 1986: Fig. 4 [ Austranema mexicanum ]; Gourbault & Vincx, 1994: p 155 ( Parapinnanema mexicanum n. comb.); Tchesunov (2014): 377 (erroneously reported as valid Austranema mexicanum ); Gulf of Mexico.

P. pectinatum ( Wieser & Hopper, 1967) ; Wieser & Hopper, 1967:286, Figs 53a–d [ Euchromadora pectinatum ]; Inglis, 1969: p 187 ( Austranema pectinatum n. comb.); Warwick & Coles, 1975: p 405 ( Parapinnanema pectinatum n. comb.); Tchesunov (2014): 377 (erroneously reported as valid Austranema pectinatum ); Florida.

P. rhipsoides Gourbault & Vincx, 1994 ; Gourbault & Vincx, 1994:150 –152, Fig. 7–8; Guadeloupe.

P. r i t a e Gourbault & Vincx, 1994; Gourbault & Vincx, 1994:147–149, Fig. 5–6; Guadeloupe.

P. shirleyae ( Coles, 1965) ; Coles, 1965:182–184 fig 2, 8, 19–21, 34 [ Euchromadora shirleyae ]; Inglis, 1969: p 187 ( Austranema shirleyae n. comb.), 172 Figs 44-4–6, 85–90; Grimaldi-De Zio, 1968 p 347; Warwick & Coles, 1975: p 405 ( Parapinnanema shirleyae n. comb.); Tchesunov (2014): 377 (erroneously reported as valid Austranema shirleyae ); South Africa, Mediterranean Sea.

P. wilsoni Inglis, 1969 ; Inglis, 1969:194, Figs 51–55, 66–75, 97–98; Australia.

Figures

FIGURE 1. Parapinnanema hawaiiensis sp. nov. A) holotype habitus; B) detail of the buccal cavity of the holotype; C) detail of the cuticular ornamentation in the cervical region of a male paratype; D) cuticular ornamentation in the middle body of the holotype; E) caudal region of the holotype; F) detail of the copulatory apparatus of the holotype; G) pattern of the cuticular ornamentation in the cloacal region of a male paratype. Scale bars: A, 100 µm; B, C, E, F, G 10 µm; D, 50 µm.

FIGURE 3. Light micrographs of Parapinnanema hawaiiensis sp. nov. A) buccal cavity of the holotype; B) detail of the precloacal modification of the cuticle of a male paratype; C) and D) details of the copulatory apparatus of the holotype. Scale bars: A, B, C, D, 10 µm.