Hydrosmittia Ferrington Jr & Saether 2011, gen. n.
Creators: name: Ferrington Jr, Leonard C.
name: Saether, Ole A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Hydrosmittia

description: Key to male imagines of Hydrosmittia gen. n.   
 1. Phallapodeme with well sclerotized hook-like apical projection ending in 2–3 distinct, sharp teeth; virga apparently without lateral groups of spinules; superior volsella barely indicated; Japan..... H. togadistalis (Sasa, Watanabe et Arakawa) (p. 111)   
– Phallapodeme without hook-like apical projection or if present very weekly sclerotized; virga consisting of median single spine, sometimes difficult to distinguish, and two rows of lateral spinules superior volsella absent or indicated as basal swelling of inner margin of gonocoxite............................................................................ 2  
2. AR 0.15–0.35, costa not extended......................................................................... 3  
– AR 0.38–2.02, costal extension 9–103 µm long, often with additional false vein.................................... 4  
 3. AR about 0.35, R 4+5 ending proximal to apex of M 3+4, lateral spinules of virga fused and sclerotized (Fig. 40 E); Canada................................................................................... H. setaven a (Saether)(p. 116)   
 – AR about 0.15, R 4+5 ending distal to apex of M 3+4, lateral spinules of virga not strongly sclerotized (Fig. 35 D); Palaearctic............................................................................... H. brevicornis Strenzke (p. 107)   
 4. Anal point parallel-sided for most of its length, about 46 µm long, gonostylus widest at apex with well developed heel (Fig. 50 F); Norway...................................................................... H. aagaardi sp. n. (p. 139)   
– Anal point triangular, 0–43 µm long; gonostylus with or without heel............................................ 5  
5. Transverse sternapodeme without oral projections, inner verticals present......................................... 6  
– Transverse sternapodeme with oral projections, inner verticals present or absent.................................... 8  
 6. Gonostylus tapering to narrow apex (Fig. 37 E); Tanzania................................ H. tenuistylata sp. n. (p.111)   
– Gonostylus not tapering................................................................................ 7  
 7. Tergite I–III and most of VI and VII pale; Tanzania....................................... H. annulata sp. n. (p. 114)   
 – No pale tergites; Tanzania............................................................ H. soelii sp. n. (p. 112)   
 8. Inner verticals (1–2) conspicuous, up to 40–60 µm long; accessory lobe of inferior volsella adpressed to gonocoxite; gonostylus with more or less well developed outer heel (Fig. 42 F); AR 0.38–0.71; Holarctic....... H. oxoniana (Edwards) (p. 120)   
– Inner verticals absent, or if occasionally present as in some specimens of H. ruttneri short and inconspicuous; accessory lobe of inferior volsella well developed, usually free at apex; gonostylus without distinct outer heel; AR 0.44–2.02..............9  
 9. False vein indistinct, AR 2.02, wing length 2.3 mm, LR 1 0.47; Japan.......... H. kisotriangulata (Sasa et Kondo) (p.109)   
– False vein indistinct or conspicuous, AR 0.44–1.37, wing length 1.2–2.7 mm..................................... 10  
 10. False vein continuing from R 4+5, conspicuous, making the costal extension indistinguishable in most specimens, wing length 2.1–2.7 mm, LR 1 0.46–0.50; Kenya................................................ H. falsicostata sp. n. (p. 134)   
 – False vein indistinct and evanescent, wing length 1.2–1.8 mm, LR 1 0.38–0.45; Holarctic.............................................................................................. H. ruttneri (Strenzke et Thienemann) (p. 129)
description: Published as part of 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, pp. 1-314 in Zootaxa 2849 (1) on page 106, DOI: 10.11646/zootaxa.2849.1.1, http://zenodo.org/record/5288200