Gallardoneris thailandensis, Carrera-Parra, Luis F., 2006

Carrera-Parra, Luis F., 2006, Phylogenetic analysis of Lumbrineridae Schmarda, 1861 (Annelida: Polychaeta), Zootaxa 1332, pp. 1-36 : 16-17

Gallardoneris thailandensis sp. nov.

( Figures 3 F–J)

Material examined. Type material: Holotype (LACM-AHF POLY 2176), Thailand, Cruise I-1990, Station Contr. I; paratypes (LACM-AHF POLY 2177) Thailand, Cruise I-1990, Station EPB-I, 2 specimens. Non-type materials: Thailand, Cruise I-1990, Station Cont. 6, 1 specimen, (LACM-AHF POLY); Thailand, Cruise I-1990, Station EPB-II, 1 specimen, (LACM-AHF POLY); Thailand, Cruise I-1990, Station EPB-III, 1 specimen (LACM-AHF POLY).

Etymology. The name refers to the country where the specimens for this description were collected.

Description. Holotype incomplete with 144 chaetigers, L10=1.3 mm, W10=0.4 mm. Prostomium conical, slightly longer than wide, with pair of nuchal organs, ventrally with well developed buccal lips. Peristomium shorter than prostomium, first ring longer than second. All parapodia well developed, first six smaller than following ones. Prechaetal lobe in parapodia 1–5 inconspicuous, rounded; from parapodium 7 rounded with digitiform lobe at dorsal end, increasing gradually but remaining smaller than postchaetal lobe; from parapodium 17 digitiform, as long as postchaetal lobe; from parapodium 136 until end, twice as long as postchaetal lobe. Postchaetal lobe in parapodia 1–16 rounded, well developed, in parapodia 17–135 digitiform, increasing gradually, as long as prechaetal lobe, from parapodium 136 shorter than prechaetal ( Figures 3 F–G). All parapodia with small notopodia, with notoaciculae. Composite multidentate hooded hooks in chaetigers 1–16, with short blade and short hood, with up to 5 teeth, proximal tooth largest ( Figure 3 H); simple multidentate hooded hooks from chaetiger 17, with up to 7 teeth, with short hood ( Figure 3 I); dorsal limbate chaetae in chaetigers 1–25, ventral limbate chaetae in chaetigers 1–17. Aciculae yellow, aristate, up to two in anterior parapodia and one in posterior ones. Mandible completely fused. Maxillary apparatus with four pairs of maxillae ( Figure 3 J); maxillary carriers as long as MI, joined along base of MI. MI forceps-like with wide base, without attachment lamella. MII stout, as long as MI, with ligament, with three teeth; without attachment lamella. MIII edentate with attachment lamella narrow along 1/4 of posterior lateral edge. MIV edentate plate, with whitish central area.

Remarks. G. thailandensis sp. nov. is the second species described in this genus. It differs from G. shinoii in the shape of the composite multidentate hooded hooks and in parapodial shape.

Distribution. Thailand.

Figures

FIGURE 3. Gallardoneris shinoii (Gallardo, 1968) comb. nov. (A – E LACM-AHF POLY 0292). A, Parapodium 3, B, Parapodium 29. C, Composite multidentate hooded hook. D, Simple multidentate hooded hook. E, Maxillary apparatus. Gallardoneris thailandensis sp. nov. (F – J LACM-AHF POLY 2176). F, Parapodium 135. G, Parapodium 140. H, Composite multidentate hooded hook. I, Simple multidentate hooded hook. J, Maxillary apparatus.