Chaetozone corona Berkeley and Berkeley, 1941
publication ID |
https://doi.org/ 10.5281/zenodo.176265 |
DOI |
https://doi.org/10.5281/zenodo.5690727 |
persistent identifier |
https://treatment.plazi.org/id/03F55A65-FFA2-6E67-28CF-E83CFB303D54 |
treatment provided by |
Plazi |
scientific name |
Chaetozone corona Berkeley and Berkeley, 1941 |
status |
|
Chaetozone corona Berkeley and Berkeley, 1941 View in CoL
Figure 3 View FIGURE 3 A–C.
Chaetozone spinosa corona Berkeley & Berkeley, 1941: 45 View in CoL -46.
Chaetozone corona: Hartman, 1960:125 View in CoL ; Hartman, 1961:109 –110; Hartman, 1969:235, Figures 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 ; Reish 1968:86; Blake 1996:285 –287, Figure 8.6A–E; Dean 2004:139.
Material Examined. Costa Rica, Golfo de Nicoya. Sta. 4, 9°53'40"N, 84°46'10"W, 40 m, mud, 10 Jul 1980, (1 USNM 080127). Costa Rica, Golfo Dulce. Intertidal, Bahia Golfito, 2 km west of main dock, muddy sand, 8°38' N, 83°10' W, Sep 1986, coll. José A. Vargas (1 HKD).
Both specimens incomplete, first 8.8 mm long and 1.3 mm wide for 35 setigers, second 7.4 mm long by 0.6 mm wide for 35 setigers; anterior body wide, slightly flattened dorsoventrally; with partial cinctures posteriorly. Pygidium absent. Color in alcohol light tan.
Prostomium conical lobe, with pair of small, round, heavily pigmented, dorsolateral nuchal organs at posterior border beneath slightly overhanging peristomium. Peristomium with dorsal crest extending posteriorly to setiger 1; with three asetigerous annulations, first approximately 3× length of two subequal, more posterior annulations, border between second and third annulations not visible dorsally ( Fig. 3 View FIGURE 3 A B). With pair of dorsal tentacles emerging from slightly swollen dorsal lobe on third peristomial annulation; first pair of branchiae emerging posteriorly and slightly lateral to dorsal tentacles from asetigerous segment 1 fused with third peristomial annulation; remaining branchiae emerging from subsequent setigers at postero-dorsal border of notopodia.
Parapodia long, with slightly elevated ridges bearing wide bundles of long, smooth, capillary setae. Notopodia with 6–7 long smooth capillaries anteriorly, accompanied by 1–2 unidentate spines beginning at setiger 8 in both specimens(8–9 in Blake 1996); capillaries emerging as bundle of shorter capillaries and ventral bundle of longer capillaries by setiger 30 ( Fig. 3 View FIGURE 3 C). Neurosetae 6–7 long capillaries accompanied by 1–2 thick yellow spines from setiger 1; three spines accompanied by two capillaries by setiger 25 ( Fig. 3 View FIGURE 3 C). Neuropodia with short, spines, without color in setigers 1–2, becoming larger and amber-yellow, similar to notopodial spines by setiger 3.
Methyl Green staining pattern. Body staining uniformly green; prostomium, peristomium and asetigerous annulations staining dark blue, tip of prostomium and anterior edge of peristomium not staining.
Habitat. Chaetozone corona was found from the intertidal zone to a depth of 40 m in Pacific Costa Rica. Blake (1996) reported this species from 24–119 m off southern California and western Mexico.
Remarks. The specimens agree well with the description of C. corona by Blake (1996). The structures which Berkeley & Berkeley (1941) and Blake (1996) interpreted as eyes are actually pigmented nuchal organs.
Distribution. Chaetozone corona has now been reported from southern California ( USA), western Mexico, and Pacific Costa Rica, both from both intertidal and shallow subtidal sediments.
USNM |
Smithsonian Institution, National Museum of Natural History |
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.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |
Chaetozone corona Berkeley and Berkeley, 1941
Dean, Harlan K. & Blake, James A. 2007 |
Chaetozone corona:
Dean 2004: 139 |
Blake 1996: 285 |
Hartman 1969: 235 |
Reish 1968: 86 |
Hartman 1961: 109 |
Hartman 1960: 125 |
Chaetozone spinosa corona
Berkeley 1941: 45 |