Pseudosmittia Edwards, 1932

Mukherjee, Tuhar, Som, Dipak Kumar & Hazra, Niladri, 2022, Two new species of Pseudosmittia Edwards, 1932 from India with a key to Oriental species adult males (Diptera: Chironomidae: Orthocladiinae), Zootaxa 5200 (1), pp. 51-62 : 59-60

Key to the males of the Oriental species of Pseudosmittia Edwards, 1932

1. Gonostylus strongly curved; inferior volsella absent ( Ferrington and Saether, 2011 —Fig. 54) (Oriental China, Japan, and Afrotropical)......................................................... Pseudosmittia guineesis ( Kieffer, 1918)

- Gonostylus not curved; inferior volsella present............................................................. 2

2. Gonostylus broad; crista dorsalis not well developed ( Fig. 4 ) ( India)................................. P. valida sp. n.

- Gonostylus slender; crista dorsalis well developed........................................................... 3

3. Virga U-shaped; inferior volsella low, accessory lobe barely indicated; anal lobe reduced ( Ferrington and Saether, 2011 —Fig. 90) (Oriental Japan)...................................................... P. tokaraneoa Sasa and Suzuki, 1995

- Virga not U-shaped; inferior volsella well developed, accessory lobe well developed; anal lobe well developed.......... 4

4. Crista dorsalis rounded; Cu 1 straight ( Ferrington and Saether, 2011 —Fig. 68) (Oriental China and Nearctic)................................................................................ P. cristagata Ferrington and Saether, 2011

- Crista dorsalis not rounded; Cu 1 not straight................................................................ 5

5. Accessory lobe of inferior volsella present................................................................. 6

- Accessory lobe of inferior volsella absent.................................................................. 9

6. Gonostylus bifurcate with inner lobe crenulate; AR less than 1 ( Ferrington and Saether, 2011 —Fig. 80) (Oriental China, Japan, and the Holarctic)................................................................. P. mathildae Albu, 1968

- Gonostylus simple; AR greater than 1..................................................................... 7

7. Anal point complex ( Ferrington and Saether, 2011 —Fig. 62) ( Indonesia)....... P. tobaduovicesima Kikuchi and Sasa, 1990

- Anal point simple.................................................................................... 8

8. Inferior volsella bluntly triangular; dorsocentrals 4 ( Ferrington and Saether, 2011 —Fig. 63) ( Japan and Afrotropical)....................................................................................... P. topei Lehmann, 1979

- Inferior volsella sharply triangular; dorsocentrals 8–13 ( Ferrington and Saether, 2011 —Fig. 64) ( Thailand).................................................................................. P. malickyi Ferrington and Saether, 2011

9. Antenna with apical seta; inferior volsella long............................................................ 10

- Antenna without apical seta; inferior volsella short......................................................... 11

10. Inferior volsella short with a basal projection, without accessory lobe ( Ferrington and Saether, 2011 —Fig. 106) (Oriental Japan; and Oceania)................................................................ P. bifurcata ( Tokunaga, 1936)

- Inferior volsella long without a basal projection, with accessory lobe ( Ferrington and Saether, 2011 —Fig. 79) (Oriental Japan)............................................................................ P. littoralis ( Tokunaga, 1936)

11. Gonostylus curved in apical one-half to one-third.......................................................... 12

- Gonostylus straight.................................................................................. 15

12. Post cubitus forked; strong apical antennal seta present ( Ferrington and Saether, 2011 —Fig. 72) (Oriental Japan, Thailand; and Palaearctic)...................................................... P. nishiharaensis Sasa and Hasegawa, 1988

- Post cubitus simple; strong apical antennal seta absent...................................................... 13

13. AR greater than 1 ( Fig. 2 ) ( India).............................................................. P. luna sp. n.

- AR less than 1...................................................................................... 14

14. Anal point with small apical projection on a broad triangular base; AR about 0.9 ( Ferrington and Saether, 2011 —Fig. 75) ( Thailand)......................................................... P. siamensis Ferrington and Saether, 2011

- Anal point broadly triangular without apical projection; AR about 0.6 ( Ferrington and Saether, 2011 —Fig. 74) (Oriental China; also, Oceania and Afrotrpical)................................................... P. triangula (Tokunaga, 1964)

15. Inferior volsella with a posterior bulge; tergite IX without caudolateral corners ( Ferrington and Saether, 2011 —Fig. 117) ( China, Thailand; also, Holarctic and Neotropical)....................................... P. forcipata ( Goetghebuer, 1921)

- Inferior volsella digitiform, apically rounded; tergite IX with caudolateral corners ( Ferrington and Saether, 2011 —Fig. 103) ( Thailand)......................................................... P. digitrienta Ferrington and Saether, 2011

Figures

FIGURE 2. Pseudosmittia luna sp. n. male (A–D). A, B.Thorax; C. Wing, scale: 50 µm; D. Hypopygium, scale: 50 µm; E. Virga.

FIGURE 4. Pseudosmittia valida sp. n. male (A–D). A, B. thorax; C. wing, scale: 100 µm; D. hypopygium, scale: 100 µm; E, virga.