Perhaps someone has concluded which year Ivar Arwidsson published his
thesis "Studien über die skandinavischen und arktischen Maldaniden ...",
1906 or 1907?
Usually when there is uncertainty whether the printed date (here 1906,
text completed in June) is correct we go for the next year. Hartman
(1951) thought 1907, as did Light (1991, also in his thesis). I am
inclined to follow the leader, but want reassuring if possible, since
several taxa entries in WoRMS would need to be changed.
You can see the title pages at
http://www.biodiversitylibrary.org/item/87302 and they seem to say
the thesis defense was in Feb 1907, but is this relevant?
NIWA is the trading name of the National Institute of Water &
Atmospheric Research Ltd.