Eucapnopsis
Okamoto, 1922
small winter stoneflies
Species Guides
1- Eucapnopsis brevicauda(short-tailed snowfly)
Eucapnopsis is a of small winter stoneflies in the Capniidae. The genus contains at least five described , with three confirmed in South Korea: E. brevicauda, E. jirisana, and E. koreensis. Species in this genus are associated with cold-water streams in forested mountain . emerge in spring, with records from March to May in Korea.
Pronunciation
How to pronounce Eucapnopsis: //ˌjuː.kæpˈnɒp.sɪs//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Members of Eucapnopsis can be distinguished from other Capniidae by genitalia ; specific diagnostic characters require examination of male and female terminalia. E. brevicauda and E. koreensis are both (fully winged), while E. jirisana is slightly brachypterous (short-winged). Previous Korean records of E. quattuorsegmentata and E. stigmatica have been reidentified as E. brevicauda and E. koreensis respectively.
Habitat
Sub-montane and montane forest streams with cold water; mid-elevation forest streams. Specimens have been collected from streams originating in national parks including Odaesan, Jirisan, Chiaksan, and Sobaeksan in South Korea.
Distribution
South Korea: E. koreensis is widespread and common, E. brevicauda is rare, and E. jirisana appears confined to the Jiri Mountains. No records are known from North Korea. E. brevicauda has a transpacific distribution including Canada, Mongolia, Russia, and the USA. Additional distribution records include the Russian Far East, Alberta, Arizona, Alaska, and British Columbia.
Seasonality
emerge from March to May. collections have operated from late January to late April, capturing active adults during this period.
Behavior
have been collected using , beating sheets, and by hand. Both sexes of E. brevicauda and E. koreensis are ; E. jirisana is slightly brachypterous.
Similar Taxa
- E. quattuorsegmentataPrevious Korean records of this have been reidentified as E. brevicauda
- E. stigmaticaPrevious Korean records of this probably refer to E. koreensis