Stempellinella, Brundin, 1947

Orel, Oksana V., 2023, Stempellinella Brundin, 1947 (Diptera: Chironomidae) from Eastern Siberia and the Russian Far East, with the description of new species, Zootaxa 5380 (4), pp. 341-360 : 359

Key to pupae of the genus Stempellinella from Russian Far East and Siberia

1. Tergite VI with two anterolateral patches of spines; tergite VII with in proximal part with two patches of shagreen ( Figs 20 , 24 ).... 2

- Tergite VI without anterolateral patches of spines; tergite VII with in proximal part with one median patch of shagreen ( Sasa 1980, Fig. 22 ) ….......................................................... Stempellinella tamaseptima (Sasa)

2. Tergites III–VI with parallel point patches which are partly or completely transversely divided in middle ( Ekrem 2007, Fig. 14 C ) …..................................................................... Stempellinella edwardsi Spies et Saether

- Tergites III–VI with π-shaped shagreen not divided medially ( Figs 19–20 , 24 ) …............ Stempellinella chirka sp. nov.

Figures

FIGURES 17–20. Details of the structure of the pupa of Stempellinella chirka sp. nov. 17—frontal apotome; 18—thorax, lateral view; 19—tergites I–V; 20—tergites VI–IX. Scale bar 20 µm.

FIGURES 21–25. Details of the structure of the pupa of Stempellinella chirka sp. nov. 21—frontal tubercles; 22—thorax, lateral view; 23—tergites II–III; 24—tergites VI–VII; 25—tergite VIII. Scale bar 50 µm.

FIGURES 8–16. Details of the structure of the male of Stempellinella chirka sp. nov. 8—head; 9—antenna; 10—wing; 11, 15—hypopygium, dorsal view; 12, 14—hypopygium, ventral view; 13—hypopygium, lateral view; 16—superior, median and inferior volsellae, dorsal view. Scale bar 20 µm (8–14), 50 µm (15–16).