Baetis qiweiae

General appearance
Body size medium up to about 6mm long (excluding antennae & cerci)
Body spindle-shaped, head without a 'rigid' between antennae (found in Labiobaetis & Alainites)

Head
The details for mouthparts illustrated in the following pictures

Thorax
Hindwing pads present
Villiopore present
All of legs similar, with a large dark brown marks on femora medially; dark marks on tibiae & tarsi distally

Abdomen
Gills I - VII, single, tracheated but poorly seen branched tracheae in young stage
Terga II - VIII with submedial pair of brown dashes
Cerci length about two-third of body length; medial filament shorter about 0.7 times in length

 

Its mouthparts of labrum, mandibles, maxillae and labium are illustrated as follow (hypopharynx is excluded).

Labrum

Maxillae

Mandibles

Labium

 

Distribution:
In Hong Kong, specimens are recorded from Tai Po Kau Forest Stream, Shing Mun, Chuen Lung, Ng Tung Chai and Mui Tsz Lam.