Polyplocia Lestage, 1921

Kwanboon, Sedtawut, Boonsoong, Boonsatien & Suttinun, Chanaporn, 2023, Taxonomic review of the Oriental genus Polyplocia Lestage, 1921 (Ephemeroptera, Euthyplociidae), with two new records for Thailand, ZooKeys 1179, pp. 197-217 : 197

Genus Polyplocia Lestage, 1921

Polyplocia Lestage, 1921: 212 (Type: Polyplocia vitalisi ); Lestage 1924: 5; Ulmer 1932: 205; Ulmer 1939: 466; Demoulin 1952: 9; Demoulin 1966: 137; Nguyen and Bae 2003a: 280; Gonçalves and Peters 2016: 553; Zheng et al. 2023: 2.

Diagnosis.

Imago: i) transverse pronotum, ii) forewing with MA fork at same level as Rs fork, and at least one intercalary vein in the cubital field with its base connected to CuP, iii) forceps with only one segment, and iv) three caudal filaments on abdomen ( Demoulin 1952; Gonçalves and Peters 2016). Nymph: i) mandibles very long, with apex obliquely truncated, ii) antennae almost the same length as the mandibles, iii) anterior angles of the pronotum protruding into points iv) foretibia terminated by an apophysis provided with an internal brush, v) fore tarsi with a distal unguiform extension, vi) gill I bilamellated, and vii) bare terminal filament ( Demoulin 1966; Gonçalves and Peters 2016: 554).