Isometrus thwaitesi Pocock 1897
Creators: name: Kovařík, František
name: Lowe, Graeme
name: Ranawana, Kithsiri B.
name: Hoferek, David
name: Š, V. A.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Isometrus
Isometrus thwaitesi

description: Isometrus thwaitesi Pocock, 1897
(Figs. 13, 138–151, 197, 223–224, 239–241, 243–244, 253, 405–406, 549, 558–560)
Isometrus thwaitesii Pocock, 1897: 114.
Isometrus (Isometrus) thwaitesi: Vachon, 1982: 88–90, figs. 36–39; Fet & Lowe, 2000: 150 (complete reference list until 1998); Kovařík, 2003: 4; Kovařík & Ojanguren, 2013: 184, 347, figs. 1260–1263.
= Isometrus (Isometrus) thwaitesi pallidus Lourenço & Huber, 2002: 266, figs. 1–7 (syn. by Kovařík & Ojanguren, 2013: 184).
TYPE LOCALITY AND TYPE REPOSITORY. Ceylon, now Sri Lanka; BMNH.
MATERIAL EXAMINED. Sri Lanka, Ratnapura District, 2 km S Hayes, 30.XI.1995, 1♀, FKCP, leg. S. Bečvář & Košťál; North Central Province, Polonnaruwa District, near Kaudulla National Park, 08°08'40.6"N 080°51' 04"E, 101 m a.s.l. (Locality 15CF, Fig. 581), 23. IV. 2015, 1♂ (Fig. 150, 549) 1♀ (Fig. 151), FKCP, leg. Kovařík et al.; Northern Province, Mannar District, Madhu Road, 08°48'26.3"N 080°10'26"E, 90 m a.s.l. (Locality 15 CH, Fig. 584), 24. –25. IV.2015, 1♂ (Figures 138–139, 142, 144, 146–149, 223, 239, 243, 405, 558–560) 1juv., FKCP, leg. Kovařík et al.; Northern Province, Mannar District, Marichchukkaddi env, border of Wilpattu National Park, 08°33'32.3"N 079°56'51"E, 7 m a.s.l. (Locality 15CI, Fig. 585), 25. –26. IV.2015, 1♀, FKCP, leg. Kovařík et al.; North Central Province, Anuradhapura District, Mihintale, 08°20'51.8"N 080°30' 27.7"E, 156 m a.s.l. (Locality 15CL, Fig. 589), 27. – 28. IV.2015, 1♂, FKCP, leg. Kovařík et al.; North Central Province, Puttalam District, Eluwankulam, 08°17' 15"N 079°50'38.7"E, 38 m a.s.l. (Locality 15CO, Fig. 592), 28. IV.2015, 1♂ 1♀ (Figures 140–141, 143, 145, 197, 224, 240–241, 244, 253, 406) 1juv., FKCP, leg. Kovařík et al.; North Central Province, Sigiriya, 7°58'25.6"N 80°44'59.7"E, 1♀, UPSL, leg. S. Jayarathne.
DIAGNOSIS. Total length 30–50 mm. Manus of pedipalp very thin, width in male equal to that that of patella and femur. Pedipalps and legs yellow, with spots. Fingers and manus of pedipalps of the same color, spotted. Mesosomal segments light-colored. First (basal) middle lamella of both sexes pecten rounded. Posterior margin of sternite V strongly convex medially. Subaculear tooth spinoid. Pectinal teeth number 13–16.
HEMISPERMATOPHORE (Figs. 146–149). Trunk broad, short, only slightly longer than capsule region. Capsule region broad. Flagellum laminiform, short, basally broadened and fused with median lobe. Median lobe rather narrow, distally truncate, with strong, curved dorsal carina. Basal lobe well developed, a broad hook-like process arising dorsally at base of median lobe.
DISTRIBUTION. Sri Lanka.
description: Published as part of Kovařík, František, Lowe, Graeme, Ranawana, Kithsiri B., Hoferek, David & Š, V. A., 2016, Scorpions of Sri Lanka (Scorpiones Buthidae, Chaerilidae, Scorpionidae) with description of four new species of the genera Charmus Karsch, 1879 and Reddyanus Vachon, 1972, stat n, pp. 1-133 in Euscorpius 220 on pages 43-47, DOI: 10.18590/euscorpius.2016.vol2016.iss220.1, http://zenodo.org/record/7124466