Accepted by D. Rentz: 12 Aug. 2014; published: 27 Aug. 2014 ZOOTAXA ISSN 1175-5326 (print edition) ISSN 1175-5334 (online edition) Copyright © 2014 Magnolia Press Zootaxa 3857 (1): 131–136 www.mapress.com/zootaxa/ Article 131 http://dx.doi.org/10.11646/zootaxa.3857.1.7 http://zoobank.org/urn:lsid:zoobank.org:pub:CB3D53F0-4C91-4227-AA39-D3710688C9FE A new species of Arnobia (Orthoptera: Phaneropteridae: Phaneropterinae) from Sakaerat, Thailand MING KAI TAN 1 & TAKSIN ARTCHAWAKOM 2 1 Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Republic of Singapore. E-mail: orthoptera.mingkai@gmail.com 2 Sakaerat Environmental Research Station, Thailand Institute of Scientific and Technological Research, Wang Nam Khieo District, Nakhon Ratchasima Province 30370, Thailand. E-mail: sakaerat@tistr.or.th Abstract From Sakaerat Environmental Research Station, Nakhon Ratchasima, Thailand, one new species of Arnobia (Orthoptera: Phaneropterinae) is described: Arnobia tinae sp. n. Key words: Phaneropterinae, Arnobia, new species, Sakaerat, Thailand Introduction Sakaerat Environmental Research Station (SERS) is located within the core and buffer zones of the UNESCO Sakaerat Biosphere Reserve, Nakhon Ratchasima, Thailand. Although SERS is known to be rich in biodiversity, there is still a dearth of research and information on the diversity of Orthoptera. In an attempt to have a baseline understanding of the orthopteran richness and diversity in SERS, orthopteran surveys were recently conducted. From SERS, one new species of bush katydid (subfamily Phaneropterinae) genus Arnobia was discovered and described here: Arnobia tinae sp. n. Material and methods Opportunistic collection, sweep-netting and light-trapping were carried out in the dry evergreen forest and dry dipterocarp forest of Sakaerat Environmental Research Station, Nakhon Ratchasima, Thailand. Photographic images were done using a digital SLR camera with compact macro lens. Scales given with the images are approximate as the image taken with different equipment had to be adapted to size. Specimens were preserved by drying and pinning or storing in 100% analytic grade ethanol. Measurements of specimens were made using a 0.05 mm vernier caliper. In the measurements, the following abbreviations are used: BL = body length; BWL = body with wing length; PL = pronotum length; PW = pronotum width; TL = tegmen length; HWT = hind wing tail length (part of hind wing surpassing tegmen); HFL = hind femur length; HTL = hind tibia length; OL = ovipositor length. Depositories: ZRC—Zoological Reference Collection, Lee Kong Chian Natural History Museum (former Raffles Museum of Biodiversity Research), National University of Singapore. Systematic part Subfamily Phaneropterinae