Afronurus rubromaculata (synonym: Cinygmina rubromaculata)

General appearance
Body size large up to 8mm long (excluding antennae & cerci)
Body color yellow brown with dark markings, but big pale mark displayed by a combination of pale portions on terga VIII & IX (shown clearly in late larval stage)

Head
Head flattened with 4 pale distinct spots near anterior margin; a row of 5 smaller pale spots near antennal bases
Epicranial suture pale; two pale spots between eyes
The details for mouthparts illustrated in the following pictures

Thorax
Dorsal surface of femora densely covered with stout and acuminate setae
The details for legs illustrated in the following pictures

Abdomen
Conspicuous lateral projections on the posterior abdominal segments
Gills I - VII single broad lamella, but gill I narrower. Fibrilliform portion well-developed, but absent on gill VII
* Gills V & VI with a distinct long projection apically
Cerci longer than body length by 1.5 times; filaments alternately brown & cream with whorls of spines on articulations but without intersegmental setae

Legs

 

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 Bride's Pool, Wang Shan Keuk (Tai Po), Tan Shan River, Tai Po Kau Forest Stream, Shing Mun, Chuen Lung, Hok Kau, Lam Tsuen River, Pak Tam Chung, Ho Chung (Sai Chung) and Pui O (Lantau Island).