Undescribed sp. (TD)
General appearance
Body size small medium up to about 4mm long (excluding antennae & cerci)
Body color yellow
brown; thoracic nota and abdominal terga without brown marking (cf. present in other baetids e.g. Platybaetis bishopi)
Body shape dorso-ventral flattened
Head
The details for mouthparts
illustrated in the following pictures
Thorax
All femora robust greatly enlarged, forefemur with a whitish mark anterior proximally on dorsal side
All tibia remarkably short. For hindleg, tibia length less than half of femur length
A single row of setae on hind femora and tibia
Abdomen
Gills I - VII single, untracheated
Central filament is greatly reduced to give a two-tailed impression; cerci length slightly longer than half of body length
Legs |
The mouthparts of labrum, mandibles, maxillae and labium are illustrated as follow (hypopharynx is excluded).
Labrum |
Maxillae |
Mandibles |
Labium |
Distribution:
In Hong Kong, specimens are found in Tai Po Kau Forest Stream.