( Fig. 13)
Material examined. TAIWAN: Nantou County: 1 female, Huisun Forest Area, Renai Township ( èḵIJợ), 26.VII.2016 - 11.VIII.2016, by MLT, leg. W. R. Liang (FSHc); 1 female, same data as above except 15.IV.2016 – 20. V.2016 (FSHc); 1 male, Chunyang [ Ɓọ], V /11–VII/13/2004, C. S. Lin & W. T. Yang, Malaise trap ( KCN) [ NMNS ENT 5249-5515] ( NMNS); 1 female, same data as above except No: II Sampling plots, IV/10– V /8/2007 [ NMNS ENT 7530-1035] ( NMNS); 1 male, Yuchig Lienhuachi [ ẅƤô], V–VI/19-9/1998, C. S. Lin & W. T. Yang, Mlaise trap [= Malaise trap] [ NMNS ENT 3161-1421] ( NMNS); 1 spec., Formosa [=Taiwan], Musha [=Wushe ( = Ḩ)], 1919. V. 18– V. 19, T. Okuni, J. Sonan ( TARI); 1 spec., Lushan [ ƋƜ], VI. 25.1997, C.C.Lo, None ( NMNS). New Taipei City: 1 female, Qiancuokeng ( Ṇĸḿ), Taishan Dist., 04-VIII-2017, leg. C. K. Liu (FSHc); 1 spec., Wanli Distric. [ Aoiȅ], IX/10–X/14/2014, W. T. Yang & K. W. Huang, Malaise trap ( KCN) ( NMNS). Taipei City: 1 male, Huagang [ ƤN], 28.III.1995, leg. K. L. Li [the collection label was printed in Chinese, all collection data was translated to English herein] ( NMNS); 1 spec., Lengshuikeng ( ṅửḿ), 13. VI.2009, leg. H. Lee ( TARI); 1 female, Xiang Mt. ( ÞƜ), Xinyi District 20-III-2020, leg. M. H. Hsiao (FSHc); Taoyuan City: 1 female, Lala Mt. Fuxing District ( ḤḤƜ), 09.VII.2017, by hand, leg. Y. H. Ho (FSHc).
Diagnosis. Naddia taiwanensis can be easily distinguished from other members of Naddia Fauvel, 1867 in Taiwan by its elytra, which are entirely covered with orange-red pubescence.
Bionomics. Many specimens of N. taiwanensis were collected by Malaise trap from middle elevation mountainous forests. Shibata (1979) reported the types series of N. taiwanensis were collected under a dead tree or from fallen leaves on the forest ground.
Distribution. Naddia taiwanensis is only known from Taiwan but is widespread on the island. The species is at present known from Nantou County, New Taipei City, Pingtung County, Taipei City, and Taoyuan City ( Shibata, 1979, this study), and is presumably distributed in mountainous areas of the entire island.