Liebebiella vera
General appearance
Body size small medium up to about 5mm long (excluding antennae & cerci)
Body color yellow
brown; thoracic nota with some brown markings
Body shape dorso-ventral flattened
Head
The details for mouthparts
illustrated in the following pictures
Thorax
Hindwing pads present, but reduced
Femora with a row of long pectinate setae dorsally
Fore tibia with a row of setae, but two rows on mid & hind tibiae (cf. one row in Baetiella trispinata)
Tarsi with a single long subapical seta ventrally, tarsal claw with one row of 8 - 9 denticles
The details for each leg illustrated in the following pictures
Abdomen
Gills I - VII single, tracheated (shown clearly in mature larvae)
Small paired dark brown spots on terga II - IX
Central filament is reduced to about 10 segments giving a two-tailed impression;
cerci length short in 0.6 times of body length
Legs |
|
The mouthparts of labrum, mandibles, maxillae and labium are illustrated as follow (hypopharynx is excluded).
Labrum |
Mandibles |
Maxillae |
Labium |
Distribution:
In Hong Kong, specimens are recorded from Pui O, Sam Tsuen, Shek Mun Kap and Wang Lung Hang Stream (Lantau Island), Tai Po Kau Forest Stream, Lam Tsuen River, Shing Mun, Chuen Lung, Tan Shan River, Ho Chung, Tai Mong Tsai, Ko Tong Ha Yeung and Sha Kok Mei Nam Wai (Sai Kung).