Prosopistoma wouterae Lieftinck, 1932

Boonsoong, Boonsatien & Sartori, Michel, 2019, Review and integrative taxonomy of the genus Prosopistoma Latreille, 1833 (Ephemeroptera, Prosopistomatidae) in Thailand, with description of a new species, ZooKeys 825, pp. 123-144 : 128-129

Prosopistoma wouterae Lieftinck, 1932 Figure 14

Prosopistoma wouterae Lieftinck, 1932: 44-55, pls 1-2. (orig.); Lafon, 1952: 433 (table); Peters, 1967: 211-213, figs 2, 8, 10, 16, 26 (redescription); Soldán & Braasch, 1984; 374-375 (key); Barber-James, 2009: 153-154, Table 2 (morph. matrix); Shi & Tong, 2013: 95 (key).

Material examined.

None.

Diagnosis.

The larvae of P. wouterae can be distinguished from those of other congeners by the combination of the following characteristics: (i) apical segment of the maxillary palp shorter than 1/2 the length of segment II, (ii) mesonotum with five dark-brown patches connected by brown narrow stripes, (iii) apex of the ventral margin of the fore-tibiae with eight serrated spines and (iv) posterolateral spine of segments VII and VIII parallel to or bent inwards the body axis ( Shi and Tong 2013).

Distribution.

Songkhla province (S).

Remarks.

Prosopistoma wouterae was originally described by Lieftinck (1932) from West Java. Parnrong et al. (2002) reported larvae of P. wouterae from the Songkhla province. In this study, we sampled in the same stream (Boripat Waterfall) but unfortunately, no specimens were found during our collection. This species seems to have a distribution limited only to the Sunda Islands and southern Thailand. Only four genes (16S, 18S, 28S rDNA, and H3) were sequenced for P. wouterae ( Ogden and Whiting 2005), and no COI sequences were available for comparison.