Paramerina divisa (Walker)

(Figs. 5–6)

Paramerina divisa (Walker, 1856: 192) (as Chironomus); Fittkau (1962: 332–333).

Paramerina kurobekogata Sasa et Okazawa, 1992a: 64, Fig. 24. [Holotype 233: 096.] Syn. nov. Paramerina tokararesea Sasa et Suzuki, 1995: 285 –287, Fig. 23. [Holotype 290: 075.] Syn. nov. Krenopelopia yunouresia Sasa, 1989: 152 –153, Plate 4A. [Holotype 052: 023b.]. Syn. nov. Krenopelopia amaminova Sasa, 1990: 138 –139, Fig. 26. [Holotype 179: 061.] Syn. nov.

Krenopelopia togavicea Sasa et Okazawa, 1992b: 213 –214, Fig. 10. [Holotype 188: 056.] Syn. nov. Monopelopia okigenga Sasa, 1990: 141 –142, Fig. 28. [Holotype 174: 094.] Syn. nov.

Krenopelopia amaminova, K. togavicea, and K. yunouresia do not belong to Krenopelopia Fittkau, but to Paramerina Fittkau, since they all possess the following characters (features of Krenopelopia in parentheses): costa ending clearly before end of M1+2 (costa ending beyond M1+2); abdominal tergite IX without row of setae (with row of setae); mid tibial spurs very narrow and elongate, with 2–3 lateral teeth (slender, with 3–4 lateral teeth) (Fig. 6); some abdominal tergites with dark band (all abdominal tergites without dark band, overall very pale); apodemes distinct, apical part of transverse sternapodeme pointed, phallapodeme long (phallapodeme indistinct) (Fig. 5).

Monopelopia Fittkau is characterized by the spindle-shaped tibial spurs, single spurs on mid and hind tibiae, short phallapodeme, tergite IX with transverse row of setae, and by lacking R2+3. Monopelopia okigenga has two tibial spurs on mid and hind legs, with main tooth and some lateral teeth, weak R2+3, long phallapodeme, and tergite IX without row of setae. These characters clearly indicate that the species belongs in Paramerina .

According to Fittkau (1962: 327–328) and Pinder (1978: 34), Krenopelopia amaminova Sasa, K. togavicea Sasa et Okazawa, K. yunouresia Sasa, Monopelopia okigenga Sasa, Paramerina kurobekogata Sasa et Okazawa, and P. t o k a r a re s e a Sasa et Suzuki all key to Paramerina divisa (Walker) as they have wing membranes without pigmentation and abdominal tergites II and V almost pale. All six species thus are considered as synonyms of P. divisa .