Myotis frater, G. M. Allen, 1923

Don E. Wilson & Russell A. Mittermeier, 2019, Vespertilionidae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 716-981 : 976-977

484.

Fraternal Myotis

Myotis frater

French: Murin fréere / German: Korea-Wasserfledermaus / Spanish: Ratonero fraile

Other common names: Long-tailed Whiskered Bat

Taxonomy. Myotis frater G. M. Allen, 1923 ,

“Yenping, Fukien Province, China.”

Subgenus Myotis ; daubentonii species group. See M. daubentonii and M. longicaudatus . Myotis frater has only been confirmed from Taiwan and type locality in Fujian, China. All southern Chinese populations are tentatively retained under M. frater until additional research can be done. Monotypic.

Distribution. SC & SE China (Sichuan, Anhui, Jiangxi, Fujian, and Guangdong) and Taiwan.

Descriptive notes. Head-body 37:8-42- 9 mm,tail 43-6-54- 2 mm, ear 8-5-14- 2 mm, hindfoot 6-4-9- 9 mm, forearm 38-2—41- 7 mm. Dorsal pelage of the Fraternal Myotis is dark brown and non-glossy; venteris a lighter creamy brown (hairs with dark brown bases dorsally and ventrally). Ears are short and angular, with sharply backward bend at 45° angle near top of anterior margins and distinct notch at middle of posterior margins; there is a fringe of long hairs that form comb-like structure on front edges of inner ears, and outer surfaces of ears are naked; tragus is relatively long at more than one-half the ear length and nearly straight (bending forward) and lacks basal lobe. Wing attaches to distal end of metatarsus of outer toe; calcar is long, narrow, and unkeeled. Skull is angular, with short rostrum and abruptly raised forehead region; C' is strong and deeply grooved along its labial edge; incisors are short but robust; and P? is small and displaced labially to a variable extent.

Habitat. Forested habitats at low and high elevations (c. 1000 m in Fujian, China).

Food and Feeding. No information.

Breeding. Lactating Fraternal Myotis have been observed in June-August and males with enlarged testes in August.

Activity patterns. The Fraternal Myotis roosts in tree hollows or holes in live bamboo stems. Calls are steep FM sweeps, with average start frequency of 110-8 kHz, end frequency of 50-2 kHz, peak frequency of 60 kHz, duration of 3-5 milliseconds, and interpulse interval of 37-4 milliseconds.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Data Deficient on The IUCN Red List. The Fraternal Myotis is relatively widespread, but very little is known aboutits ecology and threats.

Bibliography. Ruedi et al. (2015), Tsytsulina (2008h), Tsytsulina & Strelkov (2001). Zhang Shuyi et al. (2000).

Figures

475. Russian Myotis (Myotis petax), 476. Big-footed Myotis (Myotis macrodactylus), 477. Fringed Long-footed Myotis (Myotis fimbriatus), 478. Ricketts Big-footed Myotis (Myotis pilosus), 479. Mandelli’s Myotis (Myotis sicarius), 480. Bechstein’s Myotis (Myotis bechsteinii), 481. Long-tailed Myotis (Myotis longicaudatus), 482. Daubenton’s Myotis (Myotis daubentonii), 483. Reddish Myotis (Myotis soror), 484. Fraternal Myotis (Myotis frater), 485. Bokhara Myotis (Myotis bucharensis), 486. Lesser Myotis (Myotis blythii), 487. Greater Myotis (Myotis myotis), 488. Maghreb Myotis (Myotis punicus), 489. Natterer’s Myotis (Myotis nattereri), 490. Cryptic Myotis (Myotis crypticus), 491. Schaub’s Myotis (Myotis schaubi), 492. Escalera’s Myotis (Myotis escalerar), 493. Zenati Myotis (Myotis zenatius), 494. Peking Myotis (Myotis pequinius), 495. Far Eastern Myotis (Myotis bombinus), 496. Large Myotis (Myotis chinensis)

Distribution. SC & SE China (Sichuan, Anhui, Jiangxi, Fujian, and Guangdong) and Taiwan .