Denopelopia irioquerea (Sasa et Suzuki) Sasa et Suzuki, 2008

Kobayashi, Tadashi & Endo, Kazuo, 2008, Synonymic notes on some species of Chironomidae (Diptera) described by Dr. M. Sasa (†), Zootaxa 1712, pp. 49-64 : 50

Denopelopia irioquerea (Sasa et Suzuki) , comb. nov.

( Figs. 1–2 )

Denopelopia irioquereus (Sasa et Suzuki, 2000: 24, Fig. 26 a–h) (as Yaequintus ). [Holotype 385: 039.] Denopelopia bractea Cheng et Wang, 2005a: 56 –58, Figs. 1–5 . Syn. nov.

In the key to the adult males of Tanypodinae by Murray and Fittkau (1989), Yaequintus irioquereus Sasa et Suzuki will key to Denopelopia Roback et Rutter in having the following characters: costa not produced beyond R4+5, ending almost mid way between M1+2 and M3+4; R2 absent; main teeth of inner spur of mid and hind legs elongate; single row of setae on tergite IX present; and phallapodeme indistinct.

The genus Denopelopia was established by Roback and Rutter (1988) based on a species from the Nearctic Region. Recently, Cheng and Wang (2005a) described three species of Denopelopia from Palaearctic China. Yaequintus irioquereus apparently is a senior synonym of D. bractea Cheng et Wang , as it possesses two distinctive scale-like setae ( Fig. 2 ) subapically on foretibia, and has a brown abdomen. Sasa and Suzuki (2000) did not mention these scale-like setae on the fore tibia. They also stated that the squama was bare. However, in the holotype one setae is present and some additional sockets can bee seen along the edge of the squama. Adults of Tanypodinae without setae on squama are not known ( Murray & Fittkau 1989).

This is the first record of Denopelopia from Japan.

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).