Diopatra sp.
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publication ID |
https://doi.org/ 10.11646/zootaxa.5100.4.2 |
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publication LSID |
lsid:zoobank.org:pub:72305475-6683-4676-AC49-0237DCD22D78 |
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DOI |
https://doi.org/10.5281/zenodo.6314884 |
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persistent identifier |
https://treatment.plazi.org/id/5C5A4E2A-E760-2E65-11A9-8B84A337FB4E |
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treatment provided by |
Plazi |
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scientific name |
Diopatra sp. |
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Species: Diopatra sp.
Description: Diopatra sp. specimen is incomplete and has only 75 segments, body length 2.25 cm, body width 0.3 cm. Prostomium pointed with two subulate frontal lips. Prostomial appendages are presented by 3 antennae, and 2 palps ( Fig. 2A View FIGURE 2 ). Palps reach chaetigers 1-3, antennae reach chaetigers 4-9. Ceratophores of palps and antennae with 7-16 ceratophoral rings ( Fig. 2A View FIGURE 2 ). The posterior end is naturally wounded and regenerated ( Fig. 2B View FIGURE 2 ). The parapodia of first four chaetigers are modified. Modified parapodia with rounded presetal and subulate postsetal lobes ( Fig. 2D View FIGURE 2 ). Dorsal cirri are subulate, becoming very slender posteriorly, ventral cirri are subulate ( Fig. 2C & D View FIGURE 2 ). The gills are developed in parapodia starting from the 5 th segment ( Fig. 2A View FIGURE 2 ). Postsetal lobes of parapodia become gradually smaller from the anterior parapodium 5 th to 15 th chaetigers, but remain as small lobes into posterior region ( Fig. 2E View FIGURE 2 ). The dorsal cirri penetrating with 5-6 fine chaetae ( Fig. 2F View FIGURE 2 ).
Limbate chaetae: The limbate chaetae of the anterior parapodia are fine serrated. The first parapodium has single limbate chaetae ( Fig. 2G View FIGURE 2 ), and second parapodium has two limbate chaetae ( Fig. 2K View FIGURE 2 ) (one long and one small limbate chaetae). The median chaetigers with 4-5 strongly serrated upper limbate chaetae ( Fig. 3A View FIGURE 3 ) and 8-10 fine serrated lower limbate chaetae ( Fig. 3B View FIGURE 3 ).
Aciculae: Anterior parapodia (from first to four chaetiger) with three aciculae. One aciculae is long and two aciculae are of median size ( Fig. 2H View FIGURE 2 . The parapodia of the chaetigers from the middle part of the body with three unmodified upper aciculae ( Fig. 3C View FIGURE 3 ), and the median aciculae with strongly bended distal end ( Fig. 3D View FIGURE 3 ).
Pseudocompound hooks: Parapodia 1-2 with 4 slender pseudocompound hooks ( Fig. 2C & D View FIGURE 2 ); The first parapodia with 1 upper hook, 2 median pseudocompound hooks thicker and long hoods ( Fig. 2I & J View FIGURE 2 ), and the small and weak ventral pseudocompound hook. The second parapodia with 1 thick upper and 1 thick median pseudocompound hooks ( Fig. 2L & M View FIGURE 2 ), and 1 medium-sized median pseudocompound hook ( Fig. 2N View FIGURE 2 ), and smooth, incomplete ventral pseudocompound hook ( Fig. 2O View FIGURE 2 ). The hoods of all the hooks are long.
Pectinate chaetae: Pectinate chaetae with 10 teeth in slightly oblique combs ( Fig. 2P View FIGURE 2 ). First five parapodia with four pectinate chaetae per parapodium. Parapodia of median chaetigers with 8-10 pectinate chaetae per parapodium. Each pectinate chaeta with 12-16 teeth in slightly oblique comb ( Fig. 3 View FIGURE 3 F-H). Chaetae of parapodia from the middle part of the body with two bidentate subacicular hooks, with strong hoods ( Fig. 3E View FIGURE 3 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.