Hydrosmittia, Ferrington Jr & Saether, 2011

Ferrington Jr, Leonard C. & Saether, Ole A., 2011, A revision of the genera Pseudosmittia Edwards, 1932, Allocladius Kieffer, 1913, and Hydrosmittia gen. n. (Diptera: Chironomidae, Orthocladiinae) 2849, Zootaxa 2849 (1), pp. 1-314 : 106

Key to known pupae of Hydrosmittia gen. n.

1. Tergite IX without setae, frontal setae absent................................................................ 2

– Tergite IX with pair of basal setae and 2 pairs of hair-like macrosetae; frontal setae present.............................. 4

2. Tergal conjunctives II/III and VII/VIII each with about 30–37 spinules.................... H. falsicostata sp. n. (p. 134)

– Tergal conjunctive II/III at most with 8 spinules, or tergal conjunctive VII/VIII bare................................. 3

3. Sternite I with shagreen varying from extensive over whole segment, extensive posteriorly, or only a few weak spinules medially; tergite VIII with spinules considerably reduced in front of posterior band of spinules, normally with a transverse spinulefree band across third quarter of tergite ( Fig. 42 G, H )..................... H. ruttneri (Strenzke et Thienemann) (p. 129)

– Sternite I bare or with a few faint, pale, anterolateral spinules; tergite VIII without spinule-free band in apical three fourths, but with muscle scars larger than on preceding tergites.......................................... H. virgo (Strenzke) (p. 126)

4. Frontal warts distinct, frontal apotome with several wrinkles and usually spinules or tubercles; abdomen more or less pale grayish or yellowish brown; exuviae 2.5–3.4 mm long................................ H. oxoniana (Edwards) (p. 120)

– Frontal warts absent or weak, frontal apotome smooth or wrinkled but without spinules; abdomen clear or only slightly yellowish; exuviae 2.0– 2.8 mm long.................................................................................... 5

5. Abdomen clear, frontal apotome smooth or with a few wrinkles......................... H. brevicornis (Strenzke) (p. 107)

– Abdomen slightly tinged with yellow, frontal apotome with several wrinkles................... H. montana (Strenzke) (p. 118) (NOTE— H. oxoniana , H. brevicornis and H. montana may turn out not to be separable when a larger series of rearings become available).

Figures

FIGURE 42. Hydrosmittia oxoniana (Edwards) comb. n., male. A—wing; B—head; C—third palpomere; D—cibarial pump and stipes; E—virga; F—hypopygium, left dorsal aspect, right ventral aspect.