18. Myotis horsfieldii Temminck, 1840

Horsfield’s Myotis

New records

Middle Andaman Islands: Bamboo Nullah, Baratang Island, Devpur and Nayadera; Little Andaman Island: V.K. Pur.

Previous records

Middle Andaman Islands: Webi (HZM); South Andaman Islands: Port Blair (Andersen, 1907; Hill, 1967).

Comments

The Andaman Island endemic subspecies is M. horsfieldii dryas Andersen, 1907 . Out of the 15 individuals captured, eight specimens were collect- ed. Aul et al. (2014) reported the presence of this species from Point Island, Paget Island, North Reef Island, and Smith Island in North Andaman Islands; Interview Island in Middle Andaman Islands, and Little Andaman Island. The endemic subspecies varies from the mainland subspecies, M. h. peshwa, in its bacular morphology.

Echolocation Characteristics

A total of 556 calls were analysed from 12 species of echolocating bats (including a new phonotype of Hipposideros cf. pomona) from the Andaman Islands. Of these, 378 calls from seven species ( R. andamanensis, R. cognatus, H. pomona, M. spasma, P. javanicus camortae, P. coromandra, and M. horsfieldii dryas) were analysed in Bat- Sound, and 187 calls from six species ( H. cf. pomona, H. diadema masoni, H. cf. grandis, T. melanopogon, H. tickelli, and T. robustula) were analysed in AnalookW. Of all the calls analysed in BatSound, 100% of FM calls (Overall, Wilk’s λ = 0.001, P <0.001) and 100% of CF calls (Overall, Wilk’s λ = 0.002, P <0.001), and of all the calls analysed in AnalookW, 99% of FM calls (Overall, Wilk’s λ = 0.024, P <0.001) and 100% of CF calls (Overall, Wilk’s λ = 0.006, P <0.001) were accurately attributed to their respective species (Table 4).