A new species Thaicharmus guptai sp. nov. is described from the northeast Indian state of Tripura. The new species differs from the known members of the genus in the following set of morphological characters: large size (total length 45.6 mm); trichobothrium d2 is distal to i1 on femur; trichobothria est, em and et on the external surface of the patella do not form a straight line. Subaculear tubercle is absent. The movable finger of pedipalp chela has 12 cutting rows of denticles. The movable finger is much longer than the pedipalp patella. Number of pectinal teeth 20/19; pectines with distinct lamellae and fulcra. Two horn-like projections are present on the ventrolateral aspect of the metasomal segment V.

References with DOI

BASTAWADE, D. B. 2006. Arachnida: Scorpionida, Uropygi, Schizomida and Oncopodid Opiliones (Chelicerata). Pp. 449–465 in: Fauna of Arunachal Pradesh, State Fauna Series.

KOVAŘÍK, F. 1995. Review of Scorpionida from Thailand with descriptions of Thaicharmus mahunkai gen. et sp. n. and Lychas krali sp. n. (Buthidae). Acta Societatis Zoologicae Bohemicae, 59: 187– 207.

KOVAŘÍK, F. 2013. A review of Thaicharmus Kovařík, 1995, with description of Thaicharmus indicus sp. n. from India (Scorpiones: Buthidae). Euscorpius, 175: 1–9. https://doi.org/10.18590/euscorpius.2013.vol2013.iss175.1

KOVAŘÍK, F., M. E. SOLEGLAD & V. FET. 2007. A new species of scorpion in the “Charmus” group from India (Scorpiones: Buthidae). Boletín de la Sociedad Entomológica Aragonesa, 40: 201–209.

LOURENÇO, W. R. & B. DUHEM. 2010. The genus Chaerilus Simon, 1877 (Scorpiones, Chaerilidae) in the Himalayas and description of a new species. ZooKeys, 37: 13–25. https://www.doi:10.3897/zookeys.37.369.

MIRZA, Z. A., D. JOSHI, G. DESOUZA & R. V. SANAP. 2012. Description of a new species of scorpion of the genus Heterometrus Ehrenberg, 1828 (Scorpiones: Scorpionidae) from the Western Ghats, India. Indian Journal of Arachnology, 1: 1– 8.

MIRZA, Z. A. & R. V. SANAP. 2010. Description of a new species of scorpion of the genus Lychas C . L . Koch, 1845 (Scorpiones: Buthidae) from Maharashtra, India. Journal of Threanened Taxa, 2: 789–796.

MIRZA, Z. A., R.V. SANAP & R. UPADHYE. 2014. A new species of scorpion of the genus Neoscorpiops Vachon, 1980 (Scorpiones: Euscorpiidae) from India. Comptes Rendus Biologies, 337: 143–149. doi: https://www.10.1016/j.crvi.2013.11.012

MIRZA, Z. A., R.V. SANAP & A. ZAMBRE. 2015. A new species of the enigmatic genus Chiromachetes Pocock, 1899 (Scorpiones: Hormuridae) from Western Ghats, India with a key to the genus. Euscorpius, 212: 1–10. https://doi.org/10.18590/euscorpius.2015.vol2015.iss212.1

MYERS, N., R. A. MITTERMEIER, C. G. MITTERMEIER, G. A. DA FONSECA & J. KENT. 2000. Biodiversity hotspots for conservation priorities. Nature, 403: 853–858. doi:10.1038/35002501. POCOCK, R. I. 1900. The Fauna of British India, Including Ceylon and Burma. Arachnida. Taylor and Francis, London. https://www.dx.doi.org/10.5962/ bhl.title.17227

SISSOM, W. D. 1990. Systematics, biogeography and paleontology. Pp. 64–160 in: Polis, G.A. (ed.), The Biology of Scorpions. Stanford: Stanford University Press.

STAHNKE, H. L. 1971. Scorpion nomenclature and mensuration. Entomological News, 81: 297–316.

TIKADER, B. K. & D. B. BASTAWADE. 1983. Scorpions (Scorpionida: Arachnida). In: The Fauna of India, Vol. 3. Calcutta: Zoological Survey of India.

VACHON, M. 1974. Étude des caractères utilisés pour classer les familles et les genres de Scorpions (Arachnides). 1. La trichobothriotaxie en Arachnologie, Sigles trichobothriaux et types de trichobothriotaxie chez les Scorpions. Bulletin du Muséum National d’Histoire Naturelle, Paris, 140 (1973): 857–958.

ZAMBRE, A., Z. A. MIRZA., R. V. SANAP, R. UPADHYE & S. M. JAVED. 2011. A new species of Orthochirus Karsch, 1892 (Scorpiones: Buthidae) from Maharashtra, India. Euscorpius, 107: 1–12. https://doi.org/10.18590/euscorpius.2011.vol2011.iss107.1

ZAMBRE, A., R. V. SANAP & Z. A. MIRZA. 2014. A new high-elevation scorpion species of the genus Scorpiops Peters, 1861 (Scorpiones: Euscorpiidae: Scorpiopinae) from the Himalayas, India. Comptes Rendus Biologies, 337: 399–404. https://www.doi:10.1016/j.crvi. 2014.04.004