Psectrotanypus orientalis Fittkau

Kobayashi, Tadashi & Endo, Kazuo, 2008, Synonymic notes on some species of Chironomidae (Diptera) described by Dr. M. Sasa (†), Zootaxa 1712, pp. 49-64 : 53

Psectrotanypus orientalis Fittkau

( Figs. 9–10 )

Psectrotanypus orientalis Fittkau, 1962: 133 .

Psectrotanypus varius sensu Sasa and Okazawa (1992a: 65, Fig. 25 ; 1992b: 218, Fig. 15 ); Sasa (1993: 59); nec ( Fabricius, 1787: 325) (as Tipula ).

Krenopelopia togatibea Sasa et Okazawa, 1992b: 213 , Fig. 9 . [Holotype 188:054.] Syn. nov.

Macropelopia togawidea Sasa et Okazawa, 1992b: 217 , Fig. 13 . [Holotype 188: 022.] Syn. nov.

Two species of Psectrotanypus Kieffer have been recorded from Japan, P. v a r i u s (Fabricius) and P. orientalis Fittkau. P. v a r i u s was recorded by Tokunaga (1937: 35, as Anatopynia varia ). However, Fittkau (1962: 140) stated that Tokunaga’s species under the name varius is not identical to the European species based on the wing illustration given by Tokunaga. Fittkau (1962) considered Tokunaga’s P. v a r i u s to be a new species naming it P. orientalis . However, Sasa and Okazawa (1992a, b) and Sasa (1993) regarded P. orientalis to be conspecific with the European P. v a r i u s although they confirmed that the wing marking of European P. v a r i u s as illustrated by Fittkau (1962, fig. 59) is less distinct than in P. orientalis . We regard P. orientalis to be a good species.

Macropelopia togawidea and Krenopelopia togatibea should be placed as synonyms of Psectrotanypus orientalis (characters of Krenopelopia Fittkau in parentheses) as both have cross-vein RM rather long and at an acute angle to M1+2 (RM comparatively short and at a more obtuse angle to M1+2), tibial spurs with main tooth one-third of spur length and with 12–14 lateral teeth (spurs slender, main tooth about half as long as spur, with 3–4 lateral teeth), pulvilli distinct (absent), tergite IX without row of setae (with row of setae) ( Figs. 9–10 ).

Figures

FIGURES 1 – 12. Male holotypes of Tanypodinae. 1 – 2. Denopelopia irioquerea (Sasa et Suzuki, 2000), comb. nov., hypopygium (1), scale-like setae of fore tibia (2). 3 – 4. Zavrelimyia inawaquerea Sasa, Kitami et Suzuki, 2000 [= Natarsia tokunagai (Fittkau, 1962)], wing (3), mid tibial spurs (4). 5 – 6. Krenopelopia yunouresia Sasa, 1989 [= Paramerina divisa (Walker, 1856)], hypopygium (5), hind tibial spurs (6). 7 – 8. Paramerina okimaculata Sasa, 1990, hypopygium (7), mid tibial spurs (8). 9 – 10. Krenopelopia togatibea Sasa et Okazawa, 1992 [= Psectrotanypus orientalis Fittkau, 1962], hypopygium (9), mid tibial spurs (10). 11 – 12. Krenopelopia joganflava Sasa et Okazawa, 1991 [= Rheopelopia ornata (Meigen, 1838)], hypopygium (11), mid tibial spurs (12). Scale lines: 1000 μm (3); 100 μm (1, 5, 7, 9, 11); 50 μm (2, 4, 6, 8, 10, 12).

FIGURES 13 – 26. Male holotypes of Tanypodinae (13 – 22) and Diamesinae (23 – 26). 13 – 14. Zavrelimyia inaveua Sasa, Kitami et Suzuki, 2001 [= Tanypus punctipennis Meigen, 1818], scutal tubercle in dorsal view (13), mid tibial spurs (14). 15 – 18. Trissopelopia oyabetrispinosa Sasa, Kawai et Ueno, 1988 [= Trissopelopia longimana (Staeger, 1839)], hypopygium (15), fore tibial spur (16), mid tibial spurs (17), hind tibial spurs (18). 19 – 22. Zavrelimyia tusimuheia (Sasa et Suzuki, 1999), comb. nov., hypopygium (19), fore tibial spur (20), mid tibial spurs (21), hind tibial spurs (22). 23. Diamesa kurobedistalis Sasa et Okazawa, 1992 [= Diamesa alpina Tokunaga, 1936], hypopygium. 24 – 25. Diamesa sunabacedea (Tanaka et Sasa, 2001), comb. nov., hypopygium (24), anal point (25). 26. Potthastia togabicolis Sasa et Okazawa, 1992 [= Potthastia gaedii (Meigen, 1838)], hypopygium. Scale lines: 100 μm (13, 15, 19, 23 – 26); 50 μm (14, 16 – 18, 20 – 22).