General bat
vespertilio murinus linnaeus, 1758
English common name: particoloured bat
Alias: Color bat
Distinguishing characteristic: short ears wide, a small bat shape Jiang Oriental; back brown, flash glory, and neck white light control, showing two distinct colors. Palatal fold line 7.
Form: small bat shape than the east, forearm length 41-48 mm. Wing Yan narrow, wing membrane fixed in a toe outside the base. And the distance from the border membrane were developed. Similar to a semicircle away from the border membrane. Short wide ears, tragus is also short. Tragus blunt tip, base narrow. Tragus and auricular anterior angles almost at the same height. The outside edge of the base of the ear shell extension and lobular. Nipple 2 pairs. Tail shorter than the body. Between the film 4 out of shares last millimeter.
Color: body back hair base is cinnamon brown hair, deep color Yan, Mao-side plain colors, bright, silver hair, most people call it "staring"; side of the body compared with the chest and abdomen pale coat color, especially in the neck plain coat and armpit, and brown hair back into a sharp contrast, it said two-tone bat.
Skull: the skull thick and generous than the average bat. The contours of the upper part of the skull is almost straight, not very curved. Nasal fossa skull great front end, its back to the Ministry between the snout to the orbit being. No sagittal crest, the word ridge developed. Zygomatic arch very lenient. Fossa to reach a large premolars about the connection.
Teeth: maxillary incisors with two on each side, and its height in incisors than twice the height of outer incisors. Each side of an upper premolar (pm4), and the adjacent canine tight. Left and right maxillary dentition were almost parallel, the more special. Maxillary molar (m3) was flat before and after the direction is not. Chewing surfaces of molars around the front tip, tip after tip and the attached ridge between the three teeth. Gear to = 32.
Ecology: Common bat habitat is very extensive, both live in the forest, but also live in the grasslands; addition to _set_tlements in the mountains at an altitude 2000-3000 meters, also distribution. Their dwelling environment is diverse, including tree holes, chimney, attic, under the eaves, the ancient buildings and other places. They and other types of bats are often mixed together. Every evening, they will continually fly out of food from the dwelling place. If the food is scarce, and sometimes all night event, gnats and other harmful insects predation. Females usually stay with the stallion, but in the pregnant and lactating females ,40-50 groups, while the male beast are, respectively, alone or in small groups in habitat. 6 produce two cubs, even producing a cub. Normal female bats have milk on the two pairs. Winter hibernation.
Distribution: General bats widely distributed from Western Europe has been to the Pacific coast, north to latitude 60 degrees south to the Himalayas. In addition to the three northeastern provinces outside of China are also distributed in Xinjiang, Gansu. |