Coleps elongatus (Ehrenberg, 1830) Kahl, 1930
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publication ID |
https://doi.org/ 10.26515/rzsi/v121/i4/2021/158008 |
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persistent identifier |
https://treatment.plazi.org/id/03FBD330-FFE0-FFED-3B75-FEF85E8EFA9C |
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treatment provided by |
Felipe |
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scientific name |
Coleps elongatus (Ehrenberg, 1830) Kahl, 1930 |
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1. Coleps elongatus (Ehrenberg, 1830) Kahl, 1930 View in CoL ( Figure 1A–O View Figure 1 ; Table 1).
Two populations were studied, one from the protected area (Mahananda Wildlife Sanctuary) of West Bengal and another from the small natural freshwater pond (Senhati Jheel) in Kolkata.
Description: (Mahananda Wildlife Sanctuary population) ( Figure 1A–H View Figure 1 ): Size in vivo 30-50 µm × 15-25 µm on average, usually about 45 µm × 25 µm, as calculated from some in vivo measurements (n=4) and the morphometric data in Table 1, adding 15% for preparation shrinkage ( Kumar and Foissner 2016; Kumar et al., 2016). Body slender with length: width ratio about
2.0. Macronucleus, spherical, 7.0–10.0 µm across, below midline towards posterior body end. Cortex without symbiotic algae. Contractile vacuole at posterior end of the body. Armour brownish, anterior end narrow with single spine, posterior end rounded with three distinct caudal spines. Six types of armour tiers with 13 windows: anterior secondary with 2, anterior main with 5, posterior main with 4, and posterior secondary with 2 windows. Windows pretzel-shaped or hirtus- type. Body midline strongly distinguished by the borders of anterior and posterior main plates. Thirteen transverse ciliary rows and about 15 meridionally arranged somatic kineties. On average, two distinct long caudal cilia.
The Senhati Jheel population ( Figure 1I–O View Figure 1 ) is slightly larger (40.7 µm vs. 34 µm) then the Mahananda Wildlife Sanctuary population. Other characters were rather similar (for details refer Table 1). Coleps elongatus has been mentioned in two articles published from India however, their identification is doubtful.
Material deposited: A slide including protargolimpregnated specimens have been deposited at the National Zoological Collections of the Zoological Survey of India, Kolkata, India with the accession numbers Pt 4276 (MWLS population) and Pt 5200 (Senhati Jheel population).
Occurrence and ecology: Cosmopolitan distribution, feeds on bacteria and flagellates.
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.