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

Published as part of Joshi, Shantanu, Sarkar, Vivek, Sawant, Dattaprasad, Pawar, Ujwala & Kunte, Krushnamegh, 2024, 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), pp. 348-370 in Zootaxa 5448 (3) on page 361, DOI: 10.11646/zootaxa.5448.3.2, http://zenodo.org/record/11231707