Idiocnemis is a genus of damselflies in the family Platycnemididae. They are distributed on New Guinea and the surrounding islands.Abbott, J. C. 2006-2016. Family Platycnemididae and the Papuan Argiinae. OdonataCentral. Accessed: February 23, 2016. There are 20 species.Gassmann, D., & Richards, S. J. (2008). Description of Idiocnemis patriciae spec. nov. from Papua New Guinea (Odonata: Platycnemididae), with new distributional records of other Idiocnemis species. Zoologische Mededelingen, 82(47), 581-593.

The genus is divided into two groups. The Idiocnemis inornata group are mainly reddish brown in color with turquoise markings. The Idiocnemis bidentata group are brown to black with purple, blue, turquoise, or yellow markings. The groups can also be distinguished by the shape of the penis.

Species Species include:Idiocnemis. Catalogue of Life, 29 January 2016. Idiocnemis adelbertensis Idiocnemis australis Idiocnemis bidentata Idiocnemis chloropleura Idiocnemis dagnyae Idiocnemis fissidens Idiocnemis govermasensis Idiocnemis huonensis Idiocnemis inaequidens Idiocnemis inornata Idiocnemis kimminsi Idiocnemis leonardi Idiocnemis louisiadensis Idiocnemis mertoni Idiocnemis nigriventris Idiocnemis obliterata Idiocnemis patriciae Idiocnemis polhemiGassmann, D. 2000. Revision of the Papuan Idiocnemis bidentata-group (Odonata: Platycnemididae). Zoologische Mededelingen 74 375-402. Idiocnemis pruinescens Idiocnemis strumidens Idiocnemis zebrina

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