Since the 1990s, surveys of bats in China have resulted in outstanding results: Three new species have been described; five new country records; and ten new provincial records have been found. Tylonycteris (Chiroptera: Vespertilionidae ) includes three species, T. pachypus, T. robustula and T. pygmaeus ( a new species described by Feng et al. [ 2008 ] found in Yunnan Province). These three species all roost within internodes of bamboo. The northernmost recorded distribution of T. pachypus is at Mt. Jincheng (N30°40’, E106°18’) , Nanchong City, Sichuan Province founded by Zhou et al. (2005). In November, 2006, T. robustula was also found in Yuechi County and Nanchong City, Sichuan Province. Yuechi County (N30°46’, E106°28’; altitude 633 m) is the northernmost distribution of T. robustula recorded in the world and the first record of this species in Sichuan Province. From October to December 2007, T. robustula was found in Guizhou and Hainan Provinces, both also first provincial recordings for this species. The external measurements, morphological character, distribution, and conservation status of this species were recorded. These specimens were preserved al the Guangdong Entomological Institute, Guangzhou. We also reviewed the distributions of T. robustula in China, including Guangxi, Yunnan, Hainan, Guizhou, and Sichuan Provinces. The bamboo, which provides roosts for these three Tylonycteris sp. , is heavily used in these regions. Protection of bamboo forest habitat may ensure China’s endemic Tylonycteris sp.survival.
From September to November 2007,we recorded and analyzed the echolocation calls of Ricketti’s big-footed bat(Myotis ricketti) ,in call-recording cages using BatSound software.We also calculated measurements of wing shape for these bats. We compared the parameters of echolocation calls and wing shape between males and females.The results showed that only the interpulse interval was significantly different between males(68.49±10.99 ms) and females(83.61±13.77 ms) (t-test:t=-2.72,P<0.01) ,while the pulse duration(male:4.28±0.34 ms,female:4.64±0.97 ms) ,the dominant frequency(40.31±1.36 kHz,40.20±1.32 kHz) ,the max frequency(72.40±2.37 kHz,72.20±2.66 kHz) ,the min frequency(29.00±1.16 kHz,28.60±1.58 kHz) ,and the measurements of wing shape were not significantly different between males and females. M.ricketti had average wing loading(male:8.61±0.72 N/m2,female:8.51±0.81 N/m2) ,high aspect ratio(7.96±0.31,8.09±0.34) and high wing tip shape index(2.93±1.09,2.48±1.02) .
