The arboreal tiger beetles (Coleoptera: Cicindelidae) of Sri Lanka recorded from recent investigations Author Abeywardhana, Lakmini 0000-0001-8971-9406 abeywardhanalakmini@gmail.com Author Mallawarachchi, Yashas 0000-0003-4707-7235 Faculty of Computing, Sri Lanka Institute of Information Technology, New Kandy Road, Malabe 10115, Sri Lanka. yasasm @ gmail. com; https: // orcid. org / 0000 - 0003 - 4707 - 7235 yasasm@gmail.com Author Dangalle, Chandima Deepani 0000-0001-8971-9406 Department of Zoology and Environment Sciences, Faculty of Science, University of Colombo, 94, Kumaratunga Munidasa Mawatha, Colombo 00700, Sri Lanka. abeywardhanalakmini@gmail.com text Zootaxa 2021 2021-11-17 5068 3 378 398 journal article 3477 10.11646/zootaxa.5068.3.3 6be06381-fe28-43d2-8166-d40f1f1c35d0 1175-5326 5706956 2FDF3098-684A-4503-85D8-E0C05233D67F Derocrania ( Derocrania ) concinna Chaudoir, 1860 Material examined: ♀ (n = 1), ( DOZE / UOCSL / LA041 ), 6.4496°N , 80.4382°E , Sinharaja Rain Forest (Weddagala), Ratnapura District , Sabaragamuwa Province , Sri Lanka , 285 m , 19 August 2020 , D.L. Abeywardhana , found on the trunk of a Hora ( Dipterocarpus zeylanicus ) tree situated close to a walking trail within the forest . Measurements: BW 56.5, BL 16.62, HL 2.40, HW 2.82, ML 2.00, PL 4.46, PW 1.57, PI 2.85, EL 9.76, EW 2.63. Diagnosis and description: Diagnosed at the generic level by small and slender body, large head that is always wider than the elytra in males and more or less equal in females, neck that is not parallel sided, frontal excavation not deep so that there is a very visible separation between the occiput and the neck, prominent eyes, narrow labrum with outward protruding lateral teeth, thin and sharp mandibles, significantly long and thin antennae that are brown in colour with the first two segments black, pronotum slender and narrow with a length/ width ratio of 2.0 to 3.0, elytra are welded but separable and elytral apex is truncated, aedeagus very thin and bent dorsally at the apex. Included in the subgenus Derocrania , as the body length is greater than 14 mm , body robust with a long head, long vertex behind the eyes and transverse sculpture on pronotum. The species can be defined by the long habitus that has a bright non-uniform colour, head black, purple-black long pronotum, short purple elytra, head that has a wide interocular cavity, pronotum with transverse streaks and conspicuous collum, elytra oval with granulated sculpture, red coloured femur with clouded knee, long thin black legs ( Fig. 6 ). Distribution: Kandy, Nalanda, Puttalam ( Horn 1904 ); Kandy ( Fowler 1912 ); Urugalla, Rakwana, Kandy, Balangoda, Nalanda (National Museum Colombo); Haragama, Kandy (HORDI).