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Thick-thumbed bats of the genus Glischropus are currently composed of four recognized species from Southeast Asia, two of which were described in recent times. Among these species, G. aquilus is endemic to Sumatra, G. javanus is restricted to western Java, whereas G. bucephalus is widely distributed north to the Isthmus of Kra and G. tylopus is widespread south to this zoogeographic boundary. Two recently collected Glischropus specimens from Meghalaya state in north-eastern India extend the known distribution range of the genus westward into South Asia by ca. 1000 km. Morphological examination of these specimens and comparison with all known species in this genus revealed marked differences in colouration, dental characters and bacular traits. We therefore describe the Meghalaya specimens as a new species. The discovery of the new species from a forest patch adjacent to Nongkhyllem Wildlife Sanctuary from where another specialized bamboo-dwelling species (Eudiscopus denticulus) was reported recently also underscore the importance of the area from a conservation point of view.

Glischropus meghalayanus n. sp. (Figs. 1–6; Table 1) Holotype. V /M/ERS/682, adult male, in alcohol, skull and baculum extracted. Collected by Uttam Saikia, 1 st July 2020. Type locality. Forest at Lailad, adjacent to Nongkhyllem Wildlife Sanctuary, in Ri-Bhoi district of Meghalaya, India (25°56’13” N, 91°46’24” E, 210 m a.s.l.) External measurements of the holotype (in mm). HB= 40.0, TL= 41.0, E= 9.5, Tr= 4.2, FA= 32.5, 3 MT = 32.9, 4 MT = 31.4, 5 MT = 31.4, TB= 15.4, HF= 7.3, body mass= 4 g. Paratype. V /M/ERS/683, adult male, in alcohol, skull (slightly damaged) and baculum (slightly damaged) extracted. The paratype was collected by Uttam Saikia from the same locality as the holotype on the 1 st July, 2020. External measurements of the paratype (in mm). HB= 38.0, TL= 39.0, E= 9.9, Tr= 4.3, FA= 33.7, 3 MT = 33.6, 4 MT = 32.9, 5 MT = 32.6, TB= 15.1, HF= 7.1, body mass= 4 g. Etymology. The specific epithet meghalayanus is derived from the Meghalaya state in north-eastern India from where it was discovered and also in honour of the 50 th anniversary of statehood in 2022. The proposed English name is Meghalaya thick-thumbed bat. Diagnosis. A medium sized Glischropus with a forearm length of 32.5 mm and 33.7 mm, (Table 1). Dorsal fur dark brown with well demarcated beige coloured ventral fur. The skull has an elevated frontal region, globose braincase; the second incisor reaches at least two third the height of first; the baculum shaft is narrow, elongated, and strongly curved when viewed laterally. Description. Forearm length of the holotype and the paratype is 32.5 mm and 33.7 mm, respectively, which are almost equal to the length of the third metacarpals. The head-body and tail lengths are subequal. The dorsal fur is dark brown while the ventral fur is beige; there is a clear demarcation between the two. Individual dorsal hairs are unicoloured throughout whereas the ventral hairs are dark at the base and lighter at the tips. The overall appearance, including the head shape, ear and tragus, is strikingly similar to that of smaller pipistrelles. However, unlike in Pipistrellus, oval-shaped thumb pads (ca. 2.7 mm long) and fleshy callosities at the base of the toes are present (Fig. 1). Thumb pads and foot soles were pinkish in live individuals but quickly turned white after preservation in alcohol. They are not as well developed as in other bamboo specialized species like Eudiscopus. The muzzle and chin are pinkish, ears dark brown. The wing membrane is dark brown and attaches to the base of the toes. The tail membrane is slightly lighter in colour and the calcar extends almost half the length of the free edge of tail membrane; calcar lobe is elongated. The terminal caudal vertebra protrudes out of the tail membrane. The penis is dorso-ventrally flattened, pendulous, 5.5 mm in length; the proximal half is mostly naked, whereas the distal half is strongly hirsute with whitish hairs (Fig. 1). The baculum is 2.38–2.46 mm long with paired basal lobes; the shaft is narrow and terminates in a deeply bifurcated tip. In lateral view, the baculum has a double curved silhouette. The cranium has an elevated frontal region and a roundish braincase. The narial emargination is V-shaped, sagittal crest is absent and lamboid crest is poorly developed. The zygomatic arches are thin and straight. The first (I 2) and the second incisor (I 3) have similar crown area; I 3 lies almost fully laterally to I 2. The first incisor is only weakly bifid; the second incisor reaches about two third the height of the first incisor. The first upper premolar has a basal area equal to the first incisor; it is intruded from the toothrow and is largely obscured in lateral view (Fig. 2). The lower molars are nyctalodont. Dental formula is 2123/3123= 34. Comparison with similar species. As attempts to obtain sequence data from the alcohol-preserved tissues of G. meghalayanus n. sp. were unsuccessful, our comparisons are necessarily restricted to morphological features. A dental formula with 34 teeth, the labially directed concavity of the second upper incisor, and thickened pads at the base of thumbs are characteristics of the genus Glischropus. G. meghalayanus n. sp. can be distinguished from all its congeners by a suite of external, cranial, and dental characters. In contrast to all the species under this genus, the dark brown dorsal fur of the new species is demarcated from the beige ventral fur. The skull profile with a distinctly elevated frontal region and globose braincase is very similar to G. aquilus and G. bucephalus (Fig. 3). The new species, however, can be distinguished from both these two species by the following characters: a wider post-dental palatal width (PDW) of 2.9-2.98 mm (against 2.32 in G. aquilus and 2.19-2.40 mm in G. bucephalus), the first upper incisor is unicuspid (vs clearly bicuspid), and the second upper incisor reaches about two thirds the height of the first incisor (vs less than half its height in G. aquilus and G. bucephalus; Fig. 4). G. meghalayanus n. sp. can be further told apart cranially from the morphologically most closely resembling G. bucephalus by the more elongated rostral part and clearly less abruptly elevated frontal region. G. meghalayanus n. sp. can also be cranially differentiated from G. aquilus by the posteriorly narrowing V-shaped narial emargination (vs broad U-shaped in G. aquilus). The skull profile of another congener, G. tylopus, is distinctly flatter without any elevated frontal region and the second upper incisor lies postero-laterally to the first (in G. meghalayanus n. sp., they lie at the same level in a straight line; Fig 5). The baculum of G. meghalayanus n. sp. has a distinct double curved lateral profile, and the length of the bone is 2.38–2.46 mm (it is 1.21 mm in G. tylopus and 2.03–2.32 mm in G. bucephalus) (Fig. 6, Table 1). Distribution. All Glischropus species known so far are reportedly distributed in the Southeast Asian region, from Myanmar and east to the Maluku archipelago. The present discovery of G. meghalayanus n. sp. constitutes the first record of this genus from India and South Asia, and therefore represents a significant (ca. 1000 km) westward range extension for the genus from the westernmost reported locality i.e. Kayah (Karenni) state in eastern Myanmar (Blanford 1888 -91: 602) (Fig. 7). G. meghalayanus n. sp. is currently known only from the type locality, i.e. forests at Lailad, in Ri-Bhoi district of Meghalaya, India. Wing morphology. Based on mean wing measurements of the two adult male specimens caught in Meghalaya, we calculated a moderate aspect ratio (6.61) and low wing loading (4.83), coupled with relatively high tip-shape index (1.68). These wing characteristics suggest low flight speed and high manoeuvrability (Norberg and Rayner 1987) and imply that this species can be classified as an ‘edge-space aerial forager’ (Denzinger and Schnitzler 2013). This is akin to Tylonycteris and Eudiscopus bats which are adapted to a fair degree of clutter like bamboo forests (Saikia et al. 2021). Echolocation calls could also help infer the foraging ecology of these bats, but unfortunately, no recording could be obtained prior or after capture. Ecological notes. The two specimens of G. meghalayanus n. sp. were caught in a mist-net set at one of the entrances of a tunnel-like, closed canopy forest with predominant bamboo growths of Dendrocalamus and Bambusa spp. (Fig. 8). The general forest habitats found in the area belong to the Tropical semi-evergreen type (Champion and Seth 1968). Bats were caught on the inner side of the net facing the tunnel indicating that they were emerging from inside the forest patch. The area was predominantly occupied by bamboo forest and the modifications like fleshy callosities in the thumbs and soles of the bats also indicate a roosting preference inside bamboo internodes. This was exactly the same spot where two specimens of another bamboo specialist, Eudiscopus denticulus, were caught in the same night (Saikia et al. 2021). It may also be noted that another bamboo dwelling bat Tylonycteris sp. was also caught by the senior author in a nearby area during the summer of 2016, indicating extremely high diversity of bamboo-dwelling bats in the area. The present collection locality lies just outside the boundary of Nongkhyllem Wildlife Sanctuary which encompasses similar habitats. These bats are therefore highly likely to be occurring in the Sanctuary area as well, which enjoys some degrees of protection. However, dense forests such as those existing around the type locality of G. meghalayanus n. sp. are under increasing pressure due to high demands for firewood and timber for construction. Further surveys of bats in such high-diversity region are therefore urgently needed to identify areas that are in immediate needs for conservation actions.

In the past ten years several novel hantaviruses were discovered in shrews, moles and bats, suggesting the dispersal of hantaviruses in many animal taxa other than rodents during their evolution. Interestingly, the co-evolutionary analyses of most recent studies have raised the possibility of non-rodents may have served as the primordial mammalian host and harboured the ancestors of rodent-borne hantaviruses as well. The aim of our study was to investigate the presence of hantaviruses in bat lung tissue homogenates originally collected for taxonomic purposes in Malaysia, 2015. Hantavirus specific nested RT-PCR screening of 116 samples targeting the L segment of the virus have revealed the positivity of two lung tissue homogenates originating from Murina aenea bat species. Nanopore sequencing of hantavirus positive samples resulted in partial genomic data from S, M and L genome segments. The obtained results indicate the first molecular evidence for hantavirus in Murina aenae bat species and also the first discovery of a hantavirus in Murina bat species. Sequence analysis of the PCR amplicon and partial genome segments suggests the identified virus may represent a novel species in Mobatvirus genus within Hantaviridae family. Furthermore, our results provide additional genomic data to help extend our knowledge about the evolution of these viruses.

International audience; We undertook a comparative phylogeographic study using molecular, morphological and morphometric approaches to address systematic issues in bats of the Kerivoula hardwickii complex in Asia. Our phylogenetic reconstructions using DNA sequences of two mitochondrial and seven nuclear genes reveal a distinct clade containing four small-sized species (K. hardwickii sensu stricto, K. depressa, K. furva and Kerivoula sp. nov.) previously assigned to K. hardwickii sensu lato, as well as K. kachinensis, a distinctly larger taxon. Among the four small species, morphological analyses showed that K. hardwickii s.str. differs significantly from the other three species in skull shape, whereas K. depressa, K. furva and the new species appear to be morphologically cryptic species. Molecular dating estimates suggest that species within the hardwickii-complex diversified during the Late Pliocene/Early Pleistocene period, most probably in different glacial refugia in Asia. Available evidence indicates that allopatric speciation within the complex included morphological, acoustic, and cytogenetic divergence, although these were not always mutually exclusive. Such adaptive changes would explain how different taxa with overlapping morphological features can share ecological niches and maintain their gene flow in sympatry. Accordingly, we also suggest that two subspecies of K. hardwickii sensu lato (K. h. crypta and K. h. malpasi) originally described as distinct species (from Southern India and Sri Lanka, respectively) can be re-elevated to species rank. Should these be found to be conspecific however, the name crypta would have priority and malpasi should be treated as its subspecies.

Kerivoula furva sp. n. (Figs. 1–6, Tables 1–2) Holotype NMNS 17595, adult ♀, dry skin, skull and postcranial skeleton, collected by Yi-Wen Chen, 29 Mar 2009. Type locality TAIWAN, Yilan County, Yuanshan Township, 3 km East of Shuanglianpi, 24°45.21’N, 121°39.63’E, 180 m a.s.l. Paratypes NMNS 17657, adult ♀, dry skin, skull and postcranial skeleton and NMNS 19136, adult ♀, dry skin, skull and postcranial skeleton, both from the type locality; THU 07.X.25.9, adult ♀, dry skin and skull and THU 07.X.25.11, adult ♂, dry skin and skull, both from TAIWAN, Yilan County, Yuanshan Township, Shuanglianpi, 24°45.04’N, 121°38.05’E, around 500 m a.s.l.; HNHM 2016.8.1, adult ♂, in alcohol with skull extracted, collected at TAIWAN, Taoyuan City, Fuxing District, 2.5 km SE of Xiao Wulai, 24°47.01’N, 121°24.07’E, 650 m a.s.l.; TESRI B1398, adult ♀, dry skin, skull and postcranial skeleton, TESRI B1399, adult ♀, dry skin, skull and postcranial skeleton, TESRI B1400, adult ♀, dry skin, skull and postcranial skeleton and TESRI B1401, adult ♀, dry skin, skull and postcranial skeleton, the above four from TAIWAN, Taichung City, Heping District, Wushikeng Low Altitude Experimental Station of TESRI, 24°16.42’N, 120°57.059’E., 1056 m a.s.l.; HNHM 2005.66.1, adult ♂, in alcohol with skull extracted, collected at TAIWAN, Tainan City, Dongshan District, Gaoyuan Village; NMNS 13946, adult ♂, dry skin, skull in THU (B040017), NMNS 13947, adult ♂, dry skin, skull in THU (B040018), NMNS 13948, adult ♀, dry skin, skull in THU (B030041) and NMNS 13952, juvenile ♂, dry skin, skull in THU (B030028), the above four from TAIWAN, Kaohsiung City, Taoyuan District, Meilan Logging Road, 23°17.24’N, 120°49.46’E, 920 m a.s.l.; NMNS 10806, adult ♂, dry skin, skull in THU (B040007) and NMNS 14039, adult ♀, dry skin, skull in THU (B030025), both from TAIWAN, Kaohsiung City, Taoyuan District, Meilong Logging Road, 23°5.70’N, 120°44.28’E, around 800 m a.s.l.; Field number PS160206.3 (to be subsequently deposited in the Zoological Collection of the University of Mandalay), adult ♀, in alcohol with skull extracted, collected from MYANMAR, Kachin, Putao Township, Wang Hlaing Dam Village, 27.479°N, 97.169°E, 863 m a.s.l. Referred specimens BMNH 21.1.6.32, adult ♀, INDIA, Meghalaya, Jaintia Hills; BMNH 50.432, adult ♂, and BMNH 50.438, adult ♀, both from MYANMAR, Kachin, Nam Tamai; Field number PS160206.1 (to be subsequently deposited in the Zoological Collection of the University of Mandalay), adult ♂, from MYAN- MAR, Kachin, Putao Township, Wang Hlaing Dam Village. The two specimens from CHINA, Hainan (IBHG 08279 and IBHG 08280, both ♀) which are consistently supported by morphological, karyotypic and molecular evidence to have a close relationship with K. furva sp. n. in Taiwan (Wu et al., 2012) are considered to belong to this new species. In addition, the following specimens from CHINA which formed the COI lineage K. hardwickii D along with K. furva sp. n. in Taiwan (Fig. 1a) are also assigned to this new species: ROM MAM 116079, ♀, Guangxi, Jing Xin County Provincial Nature Reserve; ROM MAM 114918, ♂, ROM MAM 114944, ♀, both from Hunan, Shuhuangshan Nature Reserve; ROM MAM 114961, ♂, ROM MAM 114962, ♀, ROM MAM 114963, ♀, ROM MAM 114964, ♀, ROM MAM 115009, ♀, ROM MAM 115041, ♀, ROM MAM 115042, ♀, ROM MAM 115047, ♂, from Hunan, Daweishan National Park. The assignments of the ROM specimens to K. furva sp. n. are solely informed from a mitochondrial gene, and thus required further verification based on morphological or nuclear gene data (see Discussion). Etymology The proposed English name is ‘Dark woolly bat’. The name refers to the very dark pelage of the new species. Diagnosis Kerivoula furva sp. n. has a darkest dorsal pelage among the Asian Kerivoula species, with dorsal hairs that are broadly uniformly coloured throughout their length. Its body size is comparable to that of K. titania and K. hardwickii s. str., however, compared to the former, K. furva sp. n. has a proportionally shorter tibia and a proportionally wider postorbital constriction, whereas compar- ed to K. hardwickii s. str., it has a proportionally lower braincase height. Kerivoula furva sp. n. and K. depressa have skulls that are similar in shape while the former taxon has a slightly larger skull than the latter. Kerivoula furva sp. n. has a generally larger and more flattened skull compared to K. krauensis. Description A medium-sized Kerivoula, with a body mass of 4–7 g and a forearm length of 30.9–37.5 mm (Tables 1 and 2). The ear is 14.3–15.2 mm in length (n = 4); it is funnel shaped and has a fold extending from the base of the pinna to the half of the posterior border. The edge of the pinna is darkly pigmented, contrasting strongly with the paler central part (Fig. 4a). The tragus is long and pointed, and curves slightly outwards at the tip. In some individual bats examined, the tip of the tragus is dark while in others the tragus is pale in colour throughout its length. The dorsal pelage varies from black brown to black grey. Individual dorsal hairs are dark brown and are broadly uniform in colour except for the tips, which are even darker (Fig. 4b). The ventral pelage is greyish brown. Individual ventral hairs have distinct dark brown bases; those on the chest and along the middle line of the abdomen have medium brown tips while those along the flanks of the abdomen have pale grey tips (Fig. 4c). Some individual bats have grey-tipped hairs over the entire ventral surface. The base of the thumb swells to form an oval, fleshy pad. The insertion point of the wing membrane is at the base of the first toe. The skull has a GTL of 14.07–15.45 mm (Table 2). The narial emargination is two-fold longer than its width, while the anterior palatal emargination is approximately the same long as its width (Fig. 5a–b). The sagittal crest is absent. The braincase is broadened and flattened. The basioccipital pits are welldeveloped, and widen anteriorly and taper posteriorly beyond the front one-third of the cochleae (Fig. 5b). The C–M 3 is 5.52–6.11 mm (Table 2; see Fig. 5c–d for qualitative characters of the upper dentition). The first upper incisor (I 2) has a height approximately two-thirds that of the upper canine. The second upper incisor (I 3) has a height half that of I 2, while the crown areas of these two are about the same. The upper canine has a height surpassing that of the other teeth in the upper toothrow, and has a length that is approximately equal to its width. The first upper premolar (P 2) and the second upper premolar (P 3) are both slightly shorter than their respective widths; the latter tooth has a height and a crown area approximately 80% and 90% the respective dimensions of the former tooth. The third upper premolar (P 4) has a length along its labial bor- der longer than that along its lingual border, making this tooth somewhat triangular in shape. P 4 has its height and crown area 30–40% and 70% larger than respective dimensions of P 2; P 4 has its height twothirds that of the upper canine while having its crown area 10% larger than that of the latter tooth. The first and second upper molars (M 1 and M 2, respectively) both have typical W-shaped cusp structure, with para-, meso- and metastyle all well developed. The third upper molar (M 3) has reduced mesostyle and metacone and has the metastyle absent. The mandible has a MDL of 9.59–10.86 mm and has a C–M 3 of 5.86–6.44 mm (Table 2; see Fig. 5e–f for qualitative characters of the lower dentition). The first and second lower incisors (I 1 and I 2, respectively) are tricuspid. The third lower incisor (I 3) is unicuspid, whilst it has a large cingular cusp on the lingual posterior border in addition to another smaller one on the labial posterior border. The lower canine has a large cingular cusp on its lingual anterior border, which is higher than I 3. The first, second and third lower premolars (P 2, P 3 and P 4, respectively) are similar to each other in both height and crown area except for P 3, which has a comparatively smaller (90%) crown area. The three lower premolars have heights of ca. 75% of the lower canine. The first and second lower molar (M 1 and M 2, respectively) both have well developed talonids which have widths exceeding those of the trigonids of corresponding teeth. The third lower molar (M 3) has a reduced talonid whose width is smaller than that of the trigonid of the same tooth. Comparisons While Wu et al. (2012) referred to K. furva sp. n. as K. titania, the former species is distinct in having a proportionally shorter tibia. In K. furva sp. n. the ratio of the tibia to the forearm (TIB /FA) ranged 0.48–0.51 (n =13) for museum specimens and 0.48–0.55 (n =159) for live individuals caught in the field. In comparison, the reported TIB /FA for K. titania ranges 0.55–0.57 (n =6) for museum specimens. In the cranium, K. furva sp. n. has a proportionally larger POC than K. titania (Fig. 2 and Fig. 6 bottom row). External measurements include forearm length (FA) and length of tibia (TIB); craniodental measurements include greatest length of skull (GTL), condylobasal length (CBL), condylocanine length (CCL), zygomatic breadth (ZB), greatest width of the braincase (GBB), braincase height (BH), postorbital constriction (POC), maxillary toothrow length (C–M 3), posterior palatal width (M 3 –M 3), mandible length (MDL) and mandibular toothrow length (C–M); a — Data from Miller (1906 a); b — with an ambiguous reclassification in DAPC (Fig. 3); c — data from Tate (1941); d — data from Francis et 3 al. (2007); e — data from Douangboubpha et al. (2016); f — data from Struebig et al. (2016) Fig. 5. The skull of K. furva sp. n. (paratype, ESRI B1398), showing (a–b) dorsal and basal views of the cranium, (c) occlusal view of the left upper toothrow, (d–e) lateral views of the cranium and the mandible, and (f) occlusal view of the left lower toothrow. Scale bars = 5 mm Among phylogenetically close relatives (i.e., K. hardwickii complex), K. kachinensis is a diagnostically larger-sized species compared to K. furva sp. n. (Fig. 2 and Table 2). Kerivoula hardwickii s. str. and K. furva sp. n. broadly overlap in both body and skull size (Fig. 2 and Table 2), while the former species has a proportionally larger BH than the latter one (Figs. 2–3 and Fig. 6 middle row). Kerivoula depressa has a smaller skull size compared to K. furva sp. n. (Fig. 2 and Table 2). Kerivoula krauensis is smaller than K. furva sp. n. in general, with more extreme differences between the two on TIB and on lengths of the skull (Table 2). In addition, the braincase of K. krauensis is domed like that of K. hardwickii s. str. compared to the flat skull of K. furva sp. n. The ratio of BH to C–M 3 in K. furva sp. n. is smaller than that of K. hardwickii s. str. (Fig. 6 middle right panel) and, based on a measurement reported by Douangboubpha et al. (2016), is much smaller than that of K. krauensis (1.10). The dorsal pelage of K. furva sp. n. is clearly distinguishable from that of all congeneric species described above. Kerivoula hardwickii s. str. was described to have “dark bases of the fur on the upperparts …with the majority of the hair pale grey or brown” (Francis et al., 2007: 5–6), while K. depressa was described as having “upperparts between buff and cream-buff” (Miller, 1906 a: 65). The dorsal hairs of K. kachinensis have darker grey bases and paler grey-brown upper segments (Bates et al., 2004; Soisook et al., 2007), those of K. titania have light grey middle segments above black bases (Bates et al., 2007), and those of K. krauensis are dark brown with shiny golden-brown tips (Francis et al., 2007; Struebig et al., In press). In comparison, K. furva sp. n. has a diagnostically darker dorsal pelage that shows virtually no colour distinction between the root and the middle section of individual hairs. Echolocation Kerivoula furva sp. n. produced echolocation calls in groups consisting of 4.4–9.8 pulses and with repetition rates among bouts of 5.0–9.3 Hz 0.66 0.62 0.58 0.54 fur T fur C dep har tita Myanmar boundary, dep for K. depressa, har for K. hardwickii and tita for K. titania (Table 3). Within bouts, individual pulses had peak frequencies at 141.8–163.3 kHz, sweeping down from 182.4–222.1 (maximum frequency) to 105.7– 118.3 (minimum frequency) kHz, and were characterized by durations of 1.4–2.0 ms and repetition rates of 50–83.8 Hz. Further details of parameters for echolocation calls are presented in Table 3. In general, K. furva sp. n. emitted individual calls that were typical to its genus (see Kingston et al., 1999; Schmieder et al., 2012), characterized by very broad bandwidths (69.4–103.9 kHz), extremely high frequencies and very high repetition rates, all of which are considered to be specializations for foraging in cluttered environments such as dense vegetation (also see Siemers and Schnitzler, 2000, 2004; Schnitzler and Kalko, 2001). Distribution and ecological notes Currently known from Taiwan, Meghalaya in India, Kachin in Myanmar (this study), Hainan of SE China (Wu et al., 2012) and probably also from Hunan and Guangxi of SE China (Fig. 1). Kerivoula furva sp. n. has a wide range in Taiwan where it occurs in montane and hilly areas with elevations of et al., 2014). In such areas, K. furva sp. n. has been found in broadleaf evergreen forests with low to medium-level disturbance, including forests mixed with betel palm plantations, banana orchards or bamboo stands. In Myanmar, two individuals of K. furva sp. n. were captured in a lowland degraded forest at a foothill. This forest mainly comprises bamboo and banana with some secondary growth trees, and is located between a village and a primary evergreen forest. By analysing arthropod fragments in feces, Chiang (2006) reported the diet of K. furva sp. n. to be composed principally of spiders (order Araneae), followed by cockroaches (Blattodea). Chiang (2006) suggested K. furva sp. n. as a gleaner given that its diet comprised arthropods with no or poor flying ability. Liao (2013) demonstrated in a behavioural experiment that K. furva sp. n. can perform aerial hawking in addition to glean prey from the substrate with the interfemoral membrane. Liao’s (2013) second experiment indicated that K. furva sp. n. can hunt using prey-generated sound. It was reported that K. furva sp. n. roosted in bamboo internodes or in furled young leaves of banana plants (Chang et al., 2010; Cheng et al., 2010), with individuals roosting either solitarily or in small colonies composed of two to ten bats. Little is known of their reproductive phenology, however, females were recorded as pregnant from mid-April to mid-May (n = 8) and lactating from mid-May to early July (n = 27) (H. C. Kuo, personal observation). Genetics Conventional, G-banded and C-banded karyotypes were reported in Wu et al. (2012) for Hainanese and Taiwanese specimens, showing diploid chromosome number (2n) = 32 and fundamental number (FN) = 51–52. The diploid chromosome number differed from those of K. hardwickii, K. intermedia, K. lanosa, K. lenis, K. minuta and K. papillosa (reviewed in Wu et al., 2012). Phylogenetic analyses conducted in this study based on partial sequences of the mitochondrial COI gene and of the nuclear RAG2 gene consistently recovered close relationships among K. furva sp. n., K. hardwickii s. lato and K. kachinensis, to the exclusion of other congeneric species (Fig. 1). Kerivoula krauensis may also belong to this complex based on the COI -based phylogeny. Recently, Kuo et al. (2014) investigated the phylogeography of K. furva sp. n. across its range in Taiwan. Based on genotyping individuals at nine autosomal microsatellite loci, the authors found strong genetic differentiation among populations across the island, with evidence of restricted East-West gene flow, indicating that the Central Mountain Range acts as a barrier to movement. No such p hylogeographic structure was observed when studying haplotypes of the COI gene, although this appears to reflect this species’ recent colonization history on Taiwan (Kuo et al., 2014)., Published as part of Kuo, Hao-Chih, Soisook, Pipat, Ho, Ying-Yi, Csorba, Gabor, Wang, Chun-Neng & Rossiter, Stephen J., 2017, A taxonomic revision of the Kerivoula hardwickii complex (Chiroptera: Vespertilionidae) with the description of a new species, pp. 19-39 in Acta Chiropterologica 19 (1) on pages 27-33, DOI: 10.3161/15081109ACC2017.19.1.002, http://zenodo.org/record/3944802, {"references":["WU, Y., Y. C. LI, L. K. LIN, M. HARADA, Z. CHEN, and M. MOTOKAWA. 2012. New records of Kerivoula titania (Chiroptera: Vespertilionidae) from Hainan Island and Taiwan. Mammal Study, 37: 69 - 72.","MILLER, G. S. 1906 a. Seven new Malayan bats. Proceedings of the Biological Society of Washington, 19: 61 - 65.","TATE, G. H. H. 1941. Results of the Archbold expeditions. No. 40. Notes on vespertilionid bats. Bulletin of the American Museum of Natural History, 78: 567 - 597.","DOUANGBOUBPHA, B., S. BUMRUNGSRI, C. SATASOOK, W. WANNA, P. SOISOOK, and P. J. J. BATES. 2016. Morphology, genetics and echolocation calls of the genus Kerivoula (Chiroptera: Vespertilionidae: Kerivoulinae) in Thailand. Mammalia, 80: 21 - 47.","FRANCIS, C. M., T. KINGSTON, and A. ZUBAID. 2007. A new species of Kerivoula (Chiroptera: Vespertilionidae) from peninsular Malaysia. Acta Chiropterologica, 9: 1 - 12.","BATES, P. J. J., M. J. STRUEBIG, S. J. ROSSITER, T. KINGSTON, SAI SEIN LIN OO, and KHIN MYA MYA. 2004. A new species of Kerivoula (Chiroptera: Vespertilionidae) from Myanmar (Burma). Acta Chiropterologica, 6: 219 - 226.","SOISOOK, P., S. BUMRUNGSRI, A. DEJTARADOL, C. M. FRANCIS, G. CSORBA, A. GUILLEN- SERVENT, and P. J. J. BATES. 2007. First records of Kerivoula kachinensis (Chiroptera: Vespertilionidae) from Cambodia, Lao PDR and Thailand. Acta Chiropterologica, 9: 339 - 345.","BATES, P. J. J., M. J. STRUEBIG, B. D. HAYES, N. M. FUREY, KHIN MYA MYA, V. D. THONG, P. D. TIEN, N. T. SON, D. L. HARRISON, C. M. FRANCIS, et al. 2007. A new species of Kerivoula (Chiroptera: Vespertilionidae) from Southeast Asia. Acta Chiropterologica, 9: 323 - 337.","KINGSTON, T., G. JONES, Z. AKBAR, and T. H. KUNZ. 1999. Echolocation signal design in Kerivoulinae and Murininae (Chiroptera: Vespertilionidae) from Malaysia. Journal of Zoology (London), 249: 359 - 374.","SCHMIEDER, D. A., T. KINGSTON, R. HASHIM, and B. M. SIEMERS. 2012. Sensory constraints on prey detection performance in an ensemble of vespertilionid understorey rain forest bats. Functional Ecology, 26: 1043 - 1053.","SIEMERS, B. M., and H. - U. SCHNITZLER. 2000. Natterer's bat (Myotis nattereri Kuhl, 1818) hawks for prey close to vegetation using echolocation signals of very broad bandwidth. Behavioral Ecology and Sociobiology, 47: 400 - 412.","SIEMERS, B. M., and H. - U. SCHNITZLER. 2004. Echolocation signals reflect niche differentiation in five sympatric congeneric bat species. Nature, 429: 657 - 661.","SCHNITZLER, H. - U., and E. K. V. KALKO. 2001. Echolocation by insect-eating bats. Bioscience, 51: 557 - 569.","KUO, H. - C., S. - F. CHEN, Y. - P. FANG, J. FLANDERS, and S. J. ROSSITER. 2014. Comparative rangewide phylogeography of four endemic Taiwanese bat species. Molecular Ecology, 23: 3566 - 3586.","CHIANG, C. - L. 2006. Diet and foraging strategies of Taiwanese woolly bat (Kerivoula sp.) at Bailan, Hsinchu. M. Sci. Thesis, National Taiwan University, Taipei, 45 pp.","LIAO, W. - C. 2013. Detecting and gleaning prey by Murina and Kerivoula bats. M. Sci. Thesis, National Taiwan University, Taipei, 39 pp.","CHANG, Y. - C., C. - H. CHOU, Y. - W. CHEN, C. - L. LAN, and L. - K. LIN. 2010. [Furled young banana leaves as roost for the Taiwanese woolly bat (Kerivoula sp.)]. Nature Conservation Quarterly, 72: 3 - 7. [In Chinese].","CHENG, H. - C., Y. - P. FANG, and C. - H. CHOU. 2010. A photographic guide to the bats of Taiwan. Endemic Species Research Institute, Nantou, Taiwan, 144 pp."]}

The fairy tube-nosed bat, Murina tiensa, is considered to be endemic to Vietnam. It is known only from the original description, when it was found at two localities in limestone karst areas. In 2008, we conducted a series of intensive field surveys throughout the country and obtained additional records of this species from various habitats, including degraded to nearly pristine forests and an offshore island. Our results indicate that M. tiensa is a sexually dimorphic species, females being considerably larger than males in all external and craniodental measurements. The species emits broadband, downward frequency-modulated echolocation calls with a dominant first harmonic. When handheld or when flying in a flight tent, signals had a similar structure and were emitted in groups of 2–4 signals. On average, signals swept from 150 to 49 kHz in 2.2 ms for handheld bats, and, from 145 to 50 kHz in 1.9 ms for flying bats. M. tiensa often occurred in sympatry with M. cyclotis and several rhinolophids.