identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
DABD4364D901576AB1B5CC0290C71701.text	DABD4364D901576AB1B5CC0290C71701.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Typhlomys zhengkuni Zhang, Liu & Chen 2026	<div><p>Typhlomys zhengkuni Zhang, Liu &amp; Chen sp. nov.</p><p>Type material.</p><p>Holotype • SCNU 04927 (collection number: CSD 8438), adult male (Fig. 6), collected from <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=108.675964&amp;materialsCitation.latitude=27.912107" title="Search Plazi for locations around (long 108.675964/lat 27.912107)">Shiyue Huaitai Shu</a> (十月怀胎树 in Chinese) of Fanjing Mountain, Guizhou, China (27.912108°N, 108.675964°E, 2079 m a. s. l.), collected by Tao Zhang, Yu Deng, Qingfang Zou, and Lin Gu on April 2025 . The muscle and liver tissues in 95 % ethanol, dried skin, and cleaned skull were all deposited in the College of Life Science, Sichuan Normal University, Chengdu, China.</p><p>Paratypes • Two adult females, SCNU 04860 (collection number: CSD 8371) and SCNU 04893 (collection number: CSD 8404), collected in the same locality as the the holotype by Tao Zhang, Yu Deng, Qingfang Zou, and Lin Gu on April 2025 . • One adult male, SCNU 04334 (collection number: CSD 7014), collected from <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=108.70281&amp;materialsCitation.latitude=27.91936" title="Search Plazi for locations around (long 108.70281/lat 27.91936)">Fanjing Mountain</a>, Guizhou, China (27.91936°N, 108.702813°E, 2266.8 m a. s. l.), collected by Siyu Yang, Yu Deng, Qing Liu, and Shuang Liu on 26 March 2024 . • One adult female, SCNU 04938 (collection number: CSD 8449), from the <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=108.70281&amp;materialsCitation.latitude=27.91936" title="Search Plazi for locations around (long 108.70281/lat 27.91936)">eastern side of Fanjing Mountain</a>, collected by Zhengkun Hu in 2024 . The above specimens were prepared as dried skins with cleaned skulls and stored at the College of Life Science, Sichuan Normal University.</p><p>Measurements of the holotype (mm).</p><p>BM = 25.50 g; HB = 92.00; TL = 122.00; HL = 21.00; EL = 16.00; GLS = 25.49; CBL = 22.25; BL = 21.39; BCH = 8.42; IOB = 5.27; ZMW = 13.08; LUIM = 12.37; UML = 4.08; M 1 M 1 = 5.65; HCV = 4.98; and LNM-FLM = 7.19.</p><p>Diagnosis.</p><p>The new species can be distinguished by its more flattened braincase from T. nanus and T. chapensis . It has a larger skull and wider zygomatic width than T. huangshanensis and T. cinereus . In addition, the species further differs from the four species ( T. nanus, T. chapensis, T. huangshanensis, and T. cinereus) by the anterofossette on M 2 being present. In the phylogenetic and PCA analysis, this new species is most closely related to T. daloushanensis and T. fengjiensis . However, it can be easily distinguished from T. fengjiensis by its more rounded zygomatic arch and the mesofossette on M 1 (open only on the buccal side). From T. daloushanensis, it can be distinguished by its larger overall skull size, closed parafossette on M 1, and shorter mesofossettid on M 1 whose buccal end does not extend anteriorly.</p><p>Description.</p><p>A relatively large species in the genus Typhlomys (HB = 84.2 ± 8.52; GLS = 25.01 ± 0.51). The vibrissae are long; the ears are big and almost bare; the hind feet and tail are elongated (HL = 20.6 ± 0.80, TL = 120.40 ± 5.78). The dorsal hair is dark gray with a blackish gray base and a slightly lighter tip. The ventral pelage is slate gray and covered with creamy white hair, distinctly different from the dorsal hair. The cheeks, wrists, and knees are covered with creamy white hair. The palms of the limbs are brown or creamy white, and dorsal surfaces of the hind feet are covered with sparse, short, dark hair. The tail is covered with short hairs in the first third and longer brownish hairs in the rear portion; a tuft of long white hair is present at the tail tip (Fig. 6, Supp. material 5: fig. S 1).</p><p>The braincase is flattened, and its height is relatively high (BCH = 8.37 ± 0.19). The palatal holes are relatively developed, and three pairs of palatine foramina are present. The dental formula is 1.0.0.3 / 1.0.0.3 = 16. M 1 in all specimens of Typhlomys zhengkuni sp. nov. have a relatively wider anteroloph and a narrow posteroloph. The upper molar raw length (UML) is the greatest described in the genus (UML = 4.08 ± 0.06). The parafossette on M 1 is closed (but opens buccally in one specimen (SCNU 04893) and the mesofossette on M 1 opens on the buccal side only. The anterofossette on M 2 is present in 4 of 5 specimens: it is absent in specimen (SCNU 04334) and inconspicuous in specimen (SCNU 04860). The M 1 anterofossettid is present but inconspicuous in two specimens (SCNU 04334 and SCNU 04860). M 1 has a posterossettid and a closed mesofossettid, which is relatively short, and the buccal end does not extend anteriorly. The M 2 anterofossettid is present. The third upper and lower molars have three to four fossette-shaped structures (Fig. 5).</p><p>Comparison.</p><p>Morphologically, Typhlomys zhengkuni sp. nov. is most similar to T. daloushanensis but can be distinguished from the latter by larger skull size. Discriminant function analysis based on cranial measurements clearly separates the two species. (Fig. 2 B). Moreover, there are significant differences in the morphology of cheek teeth between the two species: The new species has a closed mesofossette on M 1, while it is usually opened in T. daloushanensis; The mesofossettid on M 1 in Typhlomys zhengkuni sp. nov. is shorter than that in T. daloushanensis and, unlike the latter, does not extend anteriorly on the buccal side; The mesolophid on M 1 of Typhlomys zhengkuni sp. nov. has no prominent extension on the buccal side and appears square-shaped. (Fig. 5 B).</p><p>Typhlomys zhengkuni sp. nov. can be easily distinguished from T. nanus and T. chapensis by its more flattened braincase, the anterofossette on M 2 being present and the mesofossettid on M 1 being closed. Furthermore, it can be distinguished by its larger skull size from T. nanus, and all measurements of Typhlomys zhengkuni sp. nov. show nearly no overlap with those of T. nanus (Table 1). Its creamy white ventral pelage further differs from the yellowish-white ventral pelage of T. chapensis .</p><p>Typhlomys zhengkuni sp. nov. can be distinguished from T. cinereus and T. huangshanensis by its larger skull and the anterofossette on M 2 being present. Besides, it can further be distinguished from T. huangshanensis by the mesofossette on M 1 (open buccally in Typhlomys zhengkuni sp. nov. vs. open on both buccal and lingual sides in T. huangshanensis); from T. cinereus by the zygomatic arch (slightly incurved in Typhlomys zhengkuni sp. nov. vs. deep incurved in T. cinereus).</p><p>Compared to T. taxuansis and T. fengjiensis, Typhlomys zhengkuni sp. nov. can be distinguished by the mesofossette on M 1, which opens only on the buccal side. In addition, Typhlomys zhengkuni sp. nov. has a more rounded zygomatic arch than that of T. fengjiensis . (Fig. 5).</p><p>Suggested common name.</p><p>We propose “ Zhengkun’s Blind Mouse ” for the English common name and “ 政坤猪尾鼠 ” for the Chinese common name.</p><p>Etymology.</p><p>The specific epithet zhengkuni honors Zhengkun Hu, a forest ranger at Fanjing Mountain, for his valuable contributions to our fieldwork and for providing the specimens of the new species.</p><p>Distribution and ecology.</p><p>This new species is known only from Fanjing Mountain in Guizhou Province, China, at elevations of 2079–2266 m. All specimens were captured in the broad-leaved forest belt among moss-covered stone piles, where they occur sympatrically with species including Sorex bedfordiae, Uropsilus gracilis, Niviventer lotipes, Dremomys pernyi, Apodemus nigrus, Anourosorex squamipes, and Parablarinella griselda .</p></div>	https://treatment.plazi.org/id/DABD4364D901576AB1B5CC0290C71701	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Zhang, Tao;Hu, Zhengkun;Zou, Qingfang;Gu, Lin;Zhuang, Wei;Gu, Pengxi;Zhan, Jiali;Mi, Xiaoqi;Liu, Shaoying;Chen, Shunde	Zhang, Tao, Hu, Zhengkun, Zou, Qingfang, Gu, Lin, Zhuang, Wei, Gu, Pengxi, Zhan, Jiali, Mi, Xiaoqi, Liu, Shaoying, Chen, Shunde (2026): A new species of the genus Typhlomys Milne-Edwards, 1877 (Rodentia, Platacanthomyidae) from Fanjing Mountain, Guizhou, China. Zoosystematics and Evolution 102 (2): 659-670, DOI: 10.3897/zse.102.181212
