Freshwater Macroinvertebrates in Hong Kong

Paraleptophlebia rostrata

General appearance
Body size small medium up to 6 mm long (excluding antennae & cerci)
Body yellowish brown with diffuse black markings

Head
Details for mouthparts illustrated in the following pictures

Thorax
Edentate part of tarsal claw about 1/6 length of claw (cf. 1/4 to 1/3 in Habrophlebiodes gilliesi)
Details for legs illustrated in the following pictures

Abdomen
Abdominal terga VIII - X with postero-lateral projections
Gills I - VII single, filamentous and forked at the basal 1/3 length of gill (cf. 1/5 or 1/4 length of gill in Habrophlebiodes gilliesi)
Three caudal filaments with whorl of setae on each junction of segements

Fullview
Gills
Head

Legs

Foreleg
Middle leg
Hindleg

 

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

Labrum

Labrum
 

Maxillae

Left maxilla
 

Mandibles

Right mandible
 

Labium

Labium

 

Distribution:
In Hong Kong, specimens are recorded in Ho Chung, Tai Mo Tsai, Sha Kok Mei (Sai Kung), Lam Tsuen River, Tan Shan River (nr. Ng Uk), Tan Chuk Han, Tai Po Kau Forest Stream, Bride's Pool, Wang Shan Keuk (Pat Sin Leng) and Wang Lung Hang (Lantau Island).