CNC/CBG Photography Group. Centre for Biodiversity Genomics. CNC/CBG Photography Group. Year: 2013. Contact: ccdbcol@uoguelph.ca.
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Marko Mutanen. University of Oulu. Marko Mutanen. Year: 2016. Contact: tel: +358-8-5531256, e-mail: marko.mutanen@oulu.fi.
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SNSB, Zoologische Staatssammlung Muenchen. SNSB, Zoologische Staatssammlung Muenchen. Year: 2015. Contact: zsm@zsm.mwn.de.
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Drawing of the original description (de Man, 1888). Note the plate gubernaculum, different of Halalaimus gracilis sensu Gerlach, 1967; ??? H . gracilis De Man, 1888.