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New findings and an extensive description of Rhinolophus marshalli Thonglongya, 1973 in Vietnam

Citings of Marshall’s horseshoe bat in areas where it has been previously found have been rare. Prior to this study, little was known about this species. By making use of data and material that were obtained in a series of field surveys conducted between 2006 and 2011, this paper provides an extensive view of the species and presents new findings important to future systematic studies and conservation assessments. | JOURNAL OF SCIENCE OF HNUE Chemical and Biological Sci. 2012 Vol. 57 No. 8 pp. 90-97 This paper is available online at http stdb.hnue.edu.vn NEW FINDINGS AND AN EXTENSIVE DESCRIPTION OF Rhinolophus marshalli THONGLONGYA 1973 IN VIETNAM Vu Dinh Thong Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology Abstract. Marshall s horseshoe bat Rhinolophus marshalli was first discovered in Thailand and was recorded in Vietnam in 1973. Over the past thirty-nine years populations of this species have been found in China Myanmar Vietnam Lao PDR Thailand and Malaysia. Citings of Marshall s horseshoe bat in areas where it has been previously found have been rare. Prior to this study little was known about this species. By making use of data and material that were obtained in a series of field surveys conducted between 2006 and 2011 this paper provides an extensive view of the species and presents new findings important to future systematic studies and conservation assessments. Keywords Asia echolocation ecology Mammalia Rhinolophidae taxonomy. 1. Introduction To date a total of eighty-five species of Rhinolophus have been identified in the old world 3 7 10 . Of these Marshall s horseshoe bat Rhinolophus marshalli was discovered and described in Thailand by Thonglongya 6 . Due to the dearth of additional citings it is considered to be one of the rarest horseshoe bat species in Asia. Bates et al. 1 noted that it is always found as individuals never in large numbers. However this study postulates that Marshall s horseshoe bat lives in colonies that consist of large numbers of individuals. Little is known about this species or the true extent of its distribution range. With reference to materials and data obtained from recent investigations this paper provides a comprehensive view that includes new findings of Marshall s horseshoe bat for taxonomic identification and conservation assessment. Received November 2 2012. Accepted November 23 2012. .