Chloeia pocicola Barroso & Kudenov

Salazar-Vallejo, Sergio I., 2023, Revision of Chloeia Savigny in Lamarck, 1818 (Annelida, Amphinomidae), Zootaxa 5238 (1), pp. 1-134 : 94

Chloeia pocicola Barroso & Kudenov in Barroso et al. 2021

Chloeia pocicola Barroso & Kudenov in Barroso et al. 2021: 5–8, Figs. 2–4 .

Diagnosis. Chloeia with bipinnate branchiae from chaetiger 4, abruptly decreasing in size after a few segments; dorsal cirri dark purple along their basal half; notochaetae furcates and harpoon chaetae with tines or without them; neurochaetae furcates with longer tines smooth or denticulate along inner margin.

Remarks. Chloeia pocicola Barroso & Kudenov in Barroso et al. (2021) was described from Brazil. Together with C. kudenovi Barroso & Paiva, 2011 , also described from Brazil, they belong in the group kudenovi, because their bipinnate branchiae start in chaetiger 4, becoming abruptly shortened after a few chaetigers. These two species differ, as indicated above, because of the pigmentation of their dorsal cirri, and the type of furcate neurochaetae. In C. pocicola , the dorsal cirri are pigmented along their basal half, and its furcate neurochaetae are denticulate along the inner margin, whereas in C. kudenovi dorsal cirri are basally pigmented, and furcate neurochaetae have smooth tines.

It is interesting that C. pocicola has neurochaetae furcates with major tines denticulate along inner margin, which are recorded only for C. pinnata but in this latter species they are present in notochaetae, are restricted to the first chaetiger, and their denticles are barely developed. It is likely that after the study of the type material, and an emendment of the diagnosis for Bathychloeia Horst, 1910 regarding the start of branchiae and their size proportions along body, C. pocicola might be transferred to Bathychloeia , but that is beyond my current objective.

Figures

FIGURE 2. Chloeia viridis Schmarda, 1861, non-type specimens (BMNH 1931.6.22.16-18). A. Black form, anterior region, dorsal view. B. Same, chaetigers 10-12, dorsal view (branchiae removed from chaetiger 11). C. Same, posterior region, dorsal view. D. Red form, anterior region, dorsal view. E. Same, chaetigers 12-14, dorsal view (branchiae removed from chaetiger 13). F. Same, posterior region, dorsal view. Scale bars: A, F, 0.9 mm; B, E, 0.7 mm; C, 1 mm; D, 1.2 mm.

FIGURE 3. Chloeia mezianei sp. n., non-type specimen (NHMD 915074). A. Left lateral view. B. Anterior end and pharynx, seen from above. C. Same, right lateral view. Scale bars: A, 1 mm; B, 0.6 mm, C, 0.5 mm.

FIGURE 4. Chloeia fusca M’Intosh, 1885, non-type specimen (UF 4368). A. Ventral view. B. Ventral view after body wall removed. C. Same, after Methyl Green staining. D. Same, lower half of digestive tube removed. (AI, anterior intestine; MB, midventral band (nerve chord); MR, muscular ridge; Oe, oesophagus; PI, posterior intestine; R, rectum; St, stomach). All scale bars: 1 mm.