Amphinemura
Ris, 1902
Amphinemura is a of in the , comprising approximately 18 described . The genus is one of the two largest within Nemouridae in China, with nearly 110 species recorded there. It is distinguished by cervical , typically with five branches, and most species possess rather short . Several Asian species exhibit elongated cerci, including A. voluta which has sausage-shaped cerci. The genus has a Holarctic and Oriental distribution.
Pronunciation
How to pronounce Amphinemura: //æmˌfaɪnˈɛm.jʊrə//
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Identification
Amphinemura can be recognized by the presence of cervical , typically with five branches. Most species have short ; however, several Asian species including A. mamillata, A. nanlingensis, A. chui, and A. voluta possess elongated cerci. A. voluta specifically has elongated sausage-shaped cerci and cervical gills that appear shrunken into a ball in preserved specimens.
Habitat
Found in mountainous regions including Maoershan National Natural Reserve in Guangxi Zhuang Autonomous Region and Nanling Mountains Region (Nanling National Forest Park, Chebaling Nature Reserve) in Guangdong Province, China.
Distribution
Holarctic and Oriental Regions. Recorded from Asia-Temperate, Alberta (Canada), Alabama (USA), Algeria, and Arizona (USA).
Similar Taxa
- NemouraBoth are within ; distinguished by Amphinemura's characteristic cervical with five branches and generally shorter in most .
- IndonemouraFormerly included now reassigned to Amphinemura based on morphological characteristics such as cervical structure.
More Details
Taxonomic note
A previously classified as Indonemoura voluta has been reassigned to Amphinemura voluta . nov. based on newly collected topotypes from Maoershan National Natural Reserve, Guangxi.