Potamyia flavata (BANKS)

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 : 755

Potamyia flavata (BANKS) (Fig. 42)

Hydropsyche flavata BANKS 1934: 569 . Syntype Malaysia: Kuala Lumpur (BMNH, examined).

Synaptopsyche klakahana ULMER 1951: 254-255. Holotype, Java: Klakah, x.1928 (Thienemann) (ZMH, examined). Synonymised by MALICKY (1997).

Potamyia proboscida LI & TIAN 1996: 136 , 137, 185. Holotype, China, Ba-wang-ling, Hainan, 23 May 1983 (Ke Ming-hui) syn.n.

N e w r e c o r d s: 1: Vietnam, Moc Chau, 26 October 1986, at light (Oláh), 1: Hanoi, Red River, 28 October 1986, from below embankment stones on the shoreline (Oláh), 1: Hoabinh, 12 km to Dabac, 30 January 1986, at light (Oláh). 1: Lombok, Narmada, 20 March 1927 (Rensch).

Antennae 1.5 times length of forewing. Spur formula 044. Tarsal claws asymmetrical, one covered with bristles. Forewing 7 mm. In forewing, crossveins M3+4-Cul and Cul- Cu2 meeting in line; Cu2 and A joining before wing margin; crossveins Sc-R1 and R1- R2+3 absent, pale pterostigmal area enlarged. In hindwing stem of M plus proximal portion of M3+4 touching and running parallel with Cu1; fork 1 present; Sc and R1 joining well before crossvein R2+3-R4.

Male genitalia. Ninth abdominal segment annular, anteriorly rounded, narrowing both dorsally and ventrally; apical lobe on posterolateral margin well developed, triangular. Tenth tergum very short, quadrangular; hook formation with thin basal portion. Clasper slender, geniculate, narrowing subbasally; apical segment with fine denticulate ending. Phallotheca with elongated and enlarged base, dorsum with central and subapical undulation, distal apex strongly upcurving, ventral subapical keel short and broad. Phallotremal sclerite small, horizontal and situated dorsally, following upcurving endothecal process; sclerous band of endophallus well developed. Lobules of ventral endothecal process small, ventral. Endothecal process short, its dorsum unusually straight.

P. flavata is recognised by the genitalia characters given above, but it is a somewhat variable species with a wide distribution.