Hydrobaenus Fries

• Main Authors: Makarchenko, Eugenyi A., Makarchenko, Marina A.
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Hydrobaenus; Canada; Fries; Kondo; Yakutia
• Online Access: https://dx.doi.org/10.5281/zenodo.5695735; https://zenodo.org/record/5695735

Key to species of Hydrobaenus Fries from the Russian Far East Males 1. Anal point reduced and usually in the form of rounded or triangular tubercle or projection............................ 2 - Anal point well developed.............................................................................. 6 2. Gonostylus wide, distally angularly, on the outer edge with small peakedness projection............................ 3 - Gonostylus different shapes, without projection on the outer edge............................................... 4 3. AR 2.50; LR 1 0.73–0.74. Dorsocentrals 15–17. Transverse sternapodeme wide in middle part. Tergite IX narrowly triangular. Virga consists of 4 setae. Gonostylus nearest of megaseta with some setae of middle length..... H. laticaudus Saether, 1976 - AR 1.27; LR 1 0.61.Dorsocentrals 4–5. Transverse sternapodeme narrow in middle part. Tergite IX rounded.Virga consists of 2 setae. Gonostylus nearest of megaseta with 2 strong and long setae........ H. tiunovi Makarchenko et Makarchenko, 2010 4. Gonostylus with tooth distally; inferior volsella double, with large rounded-triangular dorsal and ventral parts which well sep- arated from each other...................................................... H. biwaquartus Sasa et Kawai, 1987 - Gonostylus without tooth distally; inferior volsella different shapes and if consists of two parts, they not clearly separated... 5 5. Gonostylus straight, with large triangular or rounded triangular crista dorsalis in distal part. Virga consists of 4 setae. Acros- tichals distally curved and beak-shaped....................................... H. kisosecundus Sasa et Kondo, 1991 - Gonostylus slightly curved, distally without crista dorsalis. Virga consists of 2 setae. Acrostichals simple.......................................................................................... H. fusistylus (Goetghebuer, 1933) 6. Gonostylus in apical part on the outer edge with a triangular or rounded-triangular projection......................... 7 - Gonostylus in apical part without projection................................................................ 8 7. Apical projection of gonostylus at angle pointing down. Virga consists of 4 setae. Transverse sternapodema with high rod-like oral projections.............................................................. H. conformis (Holmgren, 1869) - Apical projection of gonostylus usually directed forward. Virga absent. Transverse sternapodema with low-triangular oral pro- jections................................................ H. pseudoconformis Makarchenko et Makarchenko, 2009 8. Gonostylus distally with crista dorsalis.................................................................... 9 - Gonostylus without crista dorsalis....................................................................... 12 9. Crista dorsalis triangular or rounded-triangular, located in apical inner edge and not always clearly visible behind megaseta. Tergite IX with a relatively long (about 33 µm) and narrow anal point. Acrostichals 0–5................................................................................. H. sigaensis Makarchenko, Makarchenko et Yavorskaja, 2009 - Crista dorsalis located on preapical inner edge. Acrostichals 22–24............................................. 10 10. Virga absent. Anal point parallel-sided or subparallel-sided, 28–40 µm long (Figs. 1 –2, 3)................................................................................ H. distinctus (Makarchenko et Makarchenko, 2006) comb. n. - Virga present. Anal point triangular, 16–24 µm long........................................................ 11 11. Gonostylus in apical quarter naked, crista dorsalis low and long, rounded or rounded-triangular. Dorsal part of inferior volsella rounded-triangular, ventral part long and flat................... H. sikhotealinensis Makarchenko et Makarchenko, 2006 - Gonostylus completely covered with microtrichiae, crista dorsalis short and rounded-triangular. Dorsal part of inferior volsella with finger-like projection, ventral part short and rounded.......... H. monodentatus Makarchenko et Makarchenko, 2005 12. Anal point wide and low, with a slightly concave apex. Inferior volsella large and rounded..................................................................................... H. septentrionalis Makarchenko et Makarchenko, 2005 - Anal point narrow and triangular. Inferior volsella different structure.......................................... 13 13. Inferior volsella weakly developed and as two low tuberculate projections.................................................................................................. H. parvacaudatus Makarchenko et Makarchenko, 2009 - Inferior volsella well developed... 14 14. Dorsal part of inferior volsella with finger-like or rounded apical projection (Figs. 30–33). AR 0.9–1.2................................................................................ H. jacuticus Makarchenko et Makarchenko, 2011 - Dorsal part of inferior volsella triangular or rounded, without projection. AR> 1.2................................ 15 15. AR 1.47–1.60. Anal point short (16–20 µm), with subapical pore. Dorsal part of inferior volsella rounded............................................................................... H. siricus Makarchenko et Makarchenko, 2005 - AR 2.0. Anal point more long (28 µm), without subapical pore. Dorsal part of inferior volsella triangular.......................................................................... H. maladistinctus Makarchenko et Makarchenko, 2009 : Published as part of Makarchenko, Eugenyi A. & Makarchenko, Marina A., 2014, On taxonomy of Hydrobaenus Fries, 1830 (Diptera: Chironomidae: Orthocladiinae) from the Russian Far East, with a key to species, pp. 429-438 in Zootaxa 3760 (3) on pages 430-431, DOI: 10.11646/zootaxa.3760.3.9, http://zenodo.org/record/231006 : {"references": ["Saether, O. A. (1976) Revision of Hydrobaenus, Trissocladius, Zalutschia, Paratrissocladius, and some related genera (Diptera, Chironomidae). Bulletin of the Fisheries Research Board of Canada, 195, 1 - 287.", "Makarchenko, E. A. & Makarchenko, M. A. (2010) Hydrobaenus tiunovi sp. n. (Diptera, Chironomidae, Orthocladiinae) from Sokhondinsky State Biosphere Reserve (Zabaikal'sky Territory, Russia). Euroasian Entomological Journal, 9 (3), 411 - 412.", "Makarchenko, E. A., Makarchenko, M. A. & Yavorskaya, N. M. (2009) New findings of chironomids (Diptera, Chironomidae, Orthocladiinae) in Far East and bordering territories. VI. Hydrobaenus Fries. Euroasian Entomological Journal, 8, Supplement 1, 33 - 50. [in Russian]", "Makarchenko, E. A. & Makarchenko, M. A. (2011) New or little-known species of chironomids (Diptera, Chironomidae) from South Yakutia and bordering territory. Euroasian Entomological Journal, 10 (3), 389 - 396. [in Russian]"]}