Sympotthastia

Liu, Wenbin, Ferrington Jr, Leonard C. & Wang, Xinhua, 2016, Sympotthastia wuyiensis sp. n. from China, with description of the immature stages of S. takatensis (Tokunaga) (Diptera, Chironomidae), Zootaxa 4126 (3), pp. 427-434 : 433

Key to known larvae of Sympotthastia

1. Mentum with 7–9 pairs of lateral teeth.................................................................... 2

- Mentum with 10 pairs of lateral teeth.............................................................. S. sp Epler

2. Mandible with distal inner tooth subequal to remaining inner teeth.............................................. 3

- Mandible with inner tooth unequal....................................................................... 4

3. Mentum with 7–8 pairs of lateral teeth; AR 1.50............................................. S. fulva (Johannsen)

- Mentum with 9 pairs of lateral teeth; AR 2.97.......................................... S. repentina Makarchenko

4. Mandible with distal inner tooth larger than remaining inner teeth; AR 1.84–2.17...................... S. zavreli Pagast

- Mandible as in Fig. 2 , the third and fourth inner tooth wider and bigger than remaining; AR 2.06–2.36.................................................................................................... S. takatensis (Tokunaga)

Figures

FIGURES 1 – 9. Sympotthastia takatensis (Tokunaga). Larvae. 1 — head; 2 — antenna; 3 — mandible; 4 — mentum. Pupae. 5 — frontal apotome; 6 — tergites I-VII; 7 — tergite VIII and anal lobe; 8 — thorax, lateral view. Male. 9 — genitalia.