Potamyia flava (HAGEN)

Oláh, J., P. C & Malicky, H., 2006, A revision of the lotic genus Potamyia BANKS 1900 (Trichoptera: Hydropsychidae) with the description of eight new species, Linzer biologische Beiträge 38 (1), pp. 739-777 : 748-749

Potamyia flava (HAGEN) (Fig. 11)

Macronema flava HAGEN 1861: 285 . Lectotype, USA: Missouri, St. Louis, 1859 (Sacken) (MCZ, not examined) designated by ROSS 1938: 19.

Potamyia flava (HAGEN) ; BANKS 1900: 259.

Hydropsyche kansensis BANKS 1906: 15 (synonymised by MILNE 1936: 73).

Antennae 1.5 times length of forewing. In forewing crossveins Cu1-Cu2 and M3+4- Cu1 touching. In hindwing veins M and Cu1 almost touching; fork 1 present. Spur formula 044. This is the single representative of the genus in North America. It most closely resembles P. straminea , but differs in having a bifid, not tapering, apical segment of the clasper, a broader tenth tergite and a less-developed hook formation. It also resembles members of the Madagascan P. ifanadiana -group, but has the setose surface of the tenth tergite placed more distally, the hook formation more pronounced, and the apical lobe on the posterolateral margin of the ninth segment less developed.

The species has been recorded from many states of North America, with descriptions of the larva by ROSS (1944) and WIGGINS (1977).