Baetiella bispinosa

General appearance
Body color yellow brown; thoracic nota with some brown markings and tubercules
Body shape dorso-ventral flattened

Thorax
Hindwing pads vestigal
* Basis of all legs with single finger-like white coxal gill

Abdomen
Gills I - VII single without serrate margins and untracheated
* Posterior margins of terga I - II with single median dorsal tubercle, but paired dorsal tubercules on terga III - IX
Distance between bases of dorsal tubercules on tergum III longer than its length of tubercule (cf. shorter length for B. macani)
Central filament is greatly reduced to give a two-tailed impression; cerci length longer than body length by 1.5 times.

 

Distribution: Hong Kong, China and Japan
In Hong Kong, specimens records from Lantau Island, Shek Mun Kap and Hok Tau

Reference:
Tong, X. & Dudgeon, D. (2000) Baetiella (Ephemeroptera, Baetidae) in Hong Kong, with descriptions of a new species. Entomological News 111: 143-148.
Weifang Shi & Xiaoli Tong (2015). Taxonomic notes on the genus Baetiella Uéno from China, with the descriptions of three new species (Ephemeroptera: Baetidae) Zootaxa 4012(3):553-569.