Description of Protosticta khasia sp. nov. and Yunnanosticta siangi sp. nov., with new records of P. samtsensis Gurung & Phan, 2023 from Northeast India (Odonata: Zygoptera: Platystictidae) Author Joshi, Shantanu 0000-0002-4552-5746 Department of Biological Sciences, University of Arkansas, Fayetteville, 72701, Arkansas, USA & National Centre for Biological Sciences, GKVK Campus, Bellary Rd, Bengaluru, 560065, Karnataka, India sj058@uark.edu Author Sarkar, Vivek 0000-0002-0091-0288 Wildlife Institute of India, Chandrabani, Dehradun, 248001, Uttarakhand, India viveksarkar87@gmail.com Author Sawant, Dattaprasad 0000-0003-0533-9292 Government Medical College and Hospital, Sindhudurg, 416534, Maharashtra, India dattaprasad.101@gmail.com Author Pawar, Ujwala 0000-0003-1281-2228 National Centre for Biological Sciences, GKVK Campus, Bellary Rd, Bengaluru, 560065, Karnataka, India ujwalamp@ncbs.res.in Author Kunte, Krushnamegh 0000-0002-3860-6118 National Centre for Biological Sciences, GKVK Campus, Bellary Rd, Bengaluru, 560065, Karnataka, India krushnamegh@ncbs.res.in text Zootaxa 2024 2024-05-13 5448 3 348 370 http://dx.doi.org/10.11646/zootaxa.5448.3.2 journal article 10.11646/zootaxa.5448.3.2 1175-5326 11231707 79A27DBA-56C0-4D86-BA36-35D4070CED9A Key to male Protosticta species of Northeast India 1. Paraproct simple—not lobed, without basal and median spines ( Fig. 8e–f ), pterothorax unmarked................ P. fraseri Paraproct lobed, with a basal spine, pterothorax with markings................................................. 2 2. Inwardly pointed spine on paraproct ( Fig. 8g )............................................................... 3 No inwardly pointed spine on paraproct................................................................... 4 3. Inwardly pointed spine on paraproct long and perpendicular to the paraproct; inwardly directed sharp spine on cerci mid-way ( Fig. 8g –h ), S8–9 dorsally blue................................................................ P. himalaiaca Inwardly pointed spine on paraproct shorter and oblique to the paraproct; small tubercle on mid-way of cerci ( Fig.8i–j ), S8–9 dorsally brown.............................................................................. P. samtsensis 4. Apex of paraproct with two arms of almost equal length; cerci rectangular at apices ( Fig. 8b–d )................. P. khasia Apex of paraproct with lower lobe longer and sharply pointed; cerci notched, bi-lobed at apices ( Fig. 8a )...... P. damacornu