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 ) halyi Horn, 1900 Material examined: ♂ (n = 1), ( DOZE / UOCSL / LA040 ), 6.9794°N , 80.4056°E , Makandawa Rain Forest , Kegalle District , Sabaragamuwa Province , Sri Lanka , 207 m , 21 August 2020 , D.L. Abeywardhana , on the ground within a forest gap surrounded by large trees . Measurements: BW 118.7, BL 21.76, HL 2.89, HW 3.21, ML 2.20, PL 6.25, PW 1.99, PI 3.14, EL 12.63, EW 3.74. 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 body length is greater than 14 mm , body robust with a long head, long vertex behind the eyes, transverse sculpture on pronotum. The species can be defined by the shiny bronze coloured body, large habitus that is more similar to Tricondyla than to Derocrania , very wide head, thin long antennae, very long pronotum, long parallel-sided collum that is striated, long and narrow elytra with a posterior concavity, elytral sculpture deep with transverse wrinkles in the first half and vermiculate sculpture at the apex ( Fig. 7 ). Distribution: Species known only from Sri Lanka . Anuradhapura, Pankulam, Kanthalai, Trincomali, Puttalam ( Horn 1904 ); Sinharaja ( Naviaux 2002 ).