Macrotrachela decora ( Bryce, 1912 )
publication ID |
https://doi.org/ 10.12651/JSR.2021.10.4.392 |
persistent identifier |
https://treatment.plazi.org/id/03BE87BE-C423-492B-F10C-A52D5473F827 |
treatment provided by |
Felipe |
scientific name |
Macrotrachela decora ( Bryce, 1912 ) |
status |
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10. Macrotrachela decora ( Bryce, 1912) View in CoL ( Fig. 10 View Fig )
ŀêǖĒÊệ (ṵḋ)
Callidina decora Bryce, 1912 , pp. 369, 370, fig. 3.
Macrotrachela decora View in CoL : Donner, 1965, pp. 138, 139, fig. 102.
Material examined. Two specimens found from mosses and soil at Daegwallyeong, Hoenggye-ri, Pyeongchanggun, Gangwon-do, 37°40′58.0″N, 128°45′41.6″E, 6 June 2021.
Diagnosis. Rostrum short. Rostral lamella wider than head end and bilobed; each lobe round. Corona much wid- er than cingulum. Pedicel very short. Sulcus width about a half of pedicel width; two fingertip-shaped processes on sulcus base medially. Upper lip arched and lower than sulcus base. Pharyngeal tube slightly longer than trophi length. Rump gradually tapering to foot and with rim posteriorly. Foot very short and with 4 pseudesegments; much narrower than rump. Spurs conical, very short, and with narrow interspace. Three toes; toe separation not clear.
Measurements. Total length in creeping 239 μm. Corona width 52 μm. Cingulum pad width 41 μm. Greatest trunk width in creeping 59 μm. Spur length 4.6 μm.
Remarks. Bryce (1912) wasn’t sure about the toe struc- ture in his original description of this species. He specu- lated that the toes were absent or modified to a sucker-like disc, in which case this species would properly belong to the genus Mniobia Bryce, 1910 . However, he tentatively placed this species in the genus Macrotrachela pending further examination. In the Korean specimen, the toes were not clearly separated from each other, and looked like a triangular tube ( Fig. 10E View Fig ), which is different from the adhesive disc or two stumpy papillae that the Mniobia species usually have instead of three or four toes. There- fore, the placement of this species in the genus Macrotrachela seems to be more plausible.
One of the most important diagnostic characteristics of this species is the two fingertip-shaped processes on sulcus base, which are clearly observed on the sulcus base of the Korean specimens ( Fig. 10C, D View Fig ).
This species has been reported from Czech Republic, Sweden ( Donner, 1965), New Zealand ( Haigh, 1963) and Turkey ( Ustaoğlu, 2015) after the description from the United Kingdom ( Scotland) by Bryce (1912). It is new to Asia.
World distribution. Czech Republic, Korea, New Zealand, Sweden, United Kingdom and Turkey.
Deposition. Deposited in the collection of the National Institute of Biological Resources, Incheon, Korea ( VSJAIV 0000000402 ) .
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.
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Macrotrachela decora ( Bryce, 1912 )
Song, Min Ok & Lee, Chang-Ho 2021 |
Callidina decora
Bryce 1912 |