Farhana S. Ghory Quddusi B. Kazmi Marine Reference Collection and Resource Centre, University of Karachi, Karachi-75270, Pakistan Arthropods ISSN 2224-4255 http://www.iaees.org/publications/journals/arthropods/online-version.asp 2026 15 1 15 22 International Academy of Ecology and Environmental Sciences Hong Kong 7 June 2025 15 July 2025 1 March 2026 Caridea Palaemonidae Palaemon semmelinkii larvae The ovigerous female of Palaemon semmelinkii (de Man, 1881) was collected from Ambro Creek (Lat. 24 o34'9''N Long. 67 o60'8'') and kept in the laboratory. The larvae hatched after 5 days and survived until zoea II at room temperature 25 oC-29 oC in filtered seawater with a salinity of 35-37 parts per thousand and a pH of 7.5-7.9. In order to feed the larvae, Artemia nauplii was used. The larval developmental stages are described, illustrated and compared with those of its congener's larvae recognized previously. http://www.iaees.org/publications/journals/arthropods/articles/2026-15(1)/developmental-stages-of-Palaemon-semmelinkii.pdf