Species: Baetiella bispinosa (Gose, 1980)
Synonyms: Pseudocloeon bispinosa, Acentrella japonica
Classification
Phylum: Arthropoda
 Class: Insecta
  Order: Ephemeroptera
   Family: Baetidae
    Genus: Baetiella
Collection specimen
Paratype:
     - Nymphs were kept in the Aquatic Insect Collection,Department of Biology, Khon Kaen University

Morphology:
Larva:
 B. bispinosa can be distinguished from other species by the single tubercle present on the metanotum to abdominal segment 2; paired tubercles present on abdominal segments 3-9 but absent from abdominal segment 10; coxal gills present at ventral side near base of all legs; gill, single and present, on abdominal segments 1-7; and terminal filament reduced to one segment (Phlai-ngam and Tungpairojwong, 2018).


Figure


Mature nymph of Baetiella bispinosa (Source: Phlai-ngam and Tungpairojwong, 2018)
Habitat: Baetiella bispinosa nymphs mainly inhabit on the surface of stones in fast flowing stream and seem to be restricted distribution in Thailand.

Distribution:
 - Chiang Rai Province, Chiang Mai Province

Work cited:
 - Phlai-ngam, S. and Tungpairojwong, N. 2018. First Record of Platybaetis bishopi Müller-Liebenau, 1980 and Baetiella bispinosa (Gose, 1980) (Ephemeroptera: Baetidae) from Thailand. Chiang Mai Journal Science 45(2): 774–783.

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