Echiniscus meridionalis Gąsiorek, 2023, stat. rev.
3.2. Redescription of Echiniscus meridionalis stat. rev. Figs. 2 – 7, Tables 2–4, Supplementary Material 4 with raw morphometric data. ZooBank registration number: urn:lsid:zoobank.org:pub:8A36A0BF- AA4F–427F–980B-E70DE960695E. 3.2.1. Terra typica South Orkney Islands. Material examined . South Shet...
| Published in: | Remote Sensing |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2023
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| Online Access: | https://doi.org/10.5281/zenodo.8171597 http://treatment.plazi.org/id/03EE752FFF94FFD8FCA0F950FE1BFAF4 |
| Summary: | 3.2. Redescription of Echiniscus meridionalis stat. rev. Figs. 2 – 7, Tables 2–4, Supplementary Material 4 with raw morphometric data. ZooBank registration number: urn:lsid:zoobank.org:pub:8A36A0BF- AA4F–427F–980B-E70DE960695E. 3.2.1. Terra typica South Orkney Islands. Material examined . South Shetland Islands (see Table 1 for detailed data). 3.2.2. Etymology From Latin meridionalis = southern, referring to the distribution of the species in Antarctic and sub-Antarctic archipelagos. An adjective in nominative singular. 3.2.3. Adult females (i.e. from the third instar onwards; measurements and statistics in Table 2) Body small and plump (Figs. 2A and 3A), light yellow to dark orange in alive specimens. Eyes dark red, minute and dissolving immediately in Hoyer’ s medium. Peribuccal cirri relatively long with respect to the body length (Figs. 2A, 3A and 4A); cirrus A of a moderate length, i.e. reaching approximately 1/3 of the body length; all cephalic cirri with well-delineated cirrophores. Cephalic papillae (secondary clavae) slightly longer than (primary) clavae, both barrel-shaped (Fig. 4A). Body appendage configuration A-C-C d -D-D d -E , with most appendages formed as long, flexible cirri. Short, but robust spines present in positions D and D d (Figs. 2A and 3A). Dorsal plate sculpturing comprises: (I) poorly elevated epicuticular granules, with a strong tendency to merging in all plate portions but the anterior portions of paired segmental plates I–II, median plate 2, and the much reduced median plate 3, where they are separate (Figs. 2A and 3A), (II) pseudopores in the form of delicate depressions distributed irregularly throughout the dorsum, and (III) pores, present mainly in the cephalic, scapular (Figs. 2A and 3A), and occasionally in the caudal (terminal) plates. Pores may be absent as well. Cephalic plate narrow, with the usual chalice-like anterior incision. Cervical plate even narrower, but clearly present and rectangular, tightly joined with the scapular plate. Scapular plate with a distinct ... |
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