Corynoneura Winnertz
Creators: name: Fu, Yue
name: Saether, Ole A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Corynoneura

description: Key to Nearctic pupae of Corynoneura Winnertz (based on preliminary manuscript by P.S. Langton and W.P. Coffman)   
1. Tergites (II) III –VIII with posterior points very large and recurrent (Sternite II armed with colorless spinules, which are often difficult to observe).................................................................................... 2  
– Tergites not so heavily armed............................................................................ 3  
2. Dorsocentral seta 3 long and broad taeniate (Posterior points of tergites often recurrent as far forwards as the anterior extent of the smaller recurrent points of the penultimate row. Pearl row present or absent).......................... C. sp. NA 1  
 – Dorsocentral seta 3 narrow setaceous, often difficult to detect. (Posterior points of tergites less recurrent, only partly overlapping the smaller recurrent points of the penultimate row.)............................................. C. sp. NA 2   
3. Sternite II with long colorless spinules, 10 µm or 1onger. (Sternite I may or may not be similarly armed)................ 4  
– Sternite II without long spinules (but may be armed with much smaller spinules, in which case sternite I is unarmed)..... 12  
 4. Sternite I often covered with spinules, otherwise medially bare, occasionally armed only in anterolateral corners, the anterolateral spinules conspicuously large, as large as those on sternite II. (Frontal setae taeniate, often missing; third dorsocentral seta taeniate.).......................................................................... C. arctica Kieffer, 1923   
– Sternite I not completely covered with spinules; if the anterolateral corners armed, then the spinules smaller than those on sternite II (though there may be larger spinules posteriorly)....................................................... 5  
5. Anal fringe restricted to the posterior half of the lobes........................................................ 6  
– Anal fringe complete................................................................................... 8  
 6. Posterior points on tergites II/III–V/VI distinctly larger and area pigmented........................... C. ascensa sp. n.   
– Posterior points on tergites II–VI not distinctly larger and area with or without pigment.............................. 7  
 7. Spinule patch on sternite II large and located centrally, may have light pigmentation along posterior points of tergites III–VI....................................................................................... C. caudicula sp. n.   
 – Spinule patch on sternite II smaller and restricted to the posterior part of segment, without pigment along posterior points of tergites............................................................................... C. acuminata sp. n.   
8. Apical hooklet/point rows present on sternites only........................................................... 9  
– Apical hooklet/point rows present on tergites and sternites.................................................... 11  
 9. Frontal and dorsocentral setae short and narrow. (Sternite I armed with spinules anterolaterally or unarmed.)............................................................................................. C. lacustris Edwards, 1924   
– Frontal setae narrow taeniate............................................................................ 10  
 10. Tergites with distinct bilateral muscle marks; tergites IV–VI with only 4–6 thick hooklets................ C. macula sp. n.   
 – Tergites without bilateral muscle marks; tergites IV–VII with a line of thick hooklets................ C. floridaensis sp. n.   
 11. Frontal setae and dorsocentral setae 3 long and broadly flattened. (Frontal setae 4– 5 mm wide, 165–220 µm long; dorsocentral seta 3 about 4 µm wide, 120– 150 µm long. Sternite I armed anterolaterally or unarmed.)....... C. edwardsi Brundin, 1949   
 – Frontal setae and dorsocentral setae 3 narrow taeniate. (Frontal setae about 3 µm wide; dorsocentral setae 3 about 2 µm wide. Sternite I unarmed.)........................................................................... C. sp. NA 5   
 12. Frontal apotome with distinct tubercles and apical rows on sternites only. (Frontal setae hardly flattened, about 60 µm long; dorsocentral seta 3 hair-like to barely flattened, about 50 µm long.)............................. C. celeripes Winnertz   
– Frontal apotome at most with rounded granules, usually more or less smooth. Apical rows present on sternites only or on tergites and sternites..................................................................................... 13  
13. Apical hooklet/point rows of segments IV–VII present on both tergites and sternites. (Frontal setae narrow taeniate, about 2.5 µm wide, about 80 µm long; dorsocentral seta 3 narrow taeniate, about 2 µm wide, 60 µm long. Sternite II armed with spiculate points about 2 µm long.)............................................................................ 14  
– Apical hooklet/point rows of segments IV–VII present only on sternites, absent on tergites (rarely present on one tergite).. 15  
 14. Tergite armament small and evanescent........................................................... C. sp. NA 6   
– Tergite armament conspicuous and extensive.............................................................. 16  
 15. Suture armed with a band of strong teeth.................................................... C. disinflata sp. n.   
 – Suture somewhat rugose on1y...................................... C. doriceni Makarchenko et Makarchenko, 2006   
 16. Points of abdominal tergites very small (2 µm or shorter); on tergites III–V posteriorly the points are distinctly larger and arranged in horizontal rows; on tergite II the points are minute, but extensive. (Frontal setae narrow taeniate, 2–3 µm wide. Dorsocentral setae 3 short (less than 20 µm long) and slightly flattened. Setae Dl and D5 of tergite VII narrow taeniate, about 3 µm wide. N.B.: on tergite VII the hair-like seta just internal to D5 is probably D3 displaced)........ C. fittkaui Schlee, 1968   
 – Points of abdominal tergites larger, only the most posterior arranged in distinct horizontal rows; on tergite II the points spread only a little in front of D5............................................................ C. lobata Edwards, 1924
description: Published as part of Fu, Yue & Saether, Ole A., 2012, 3536, pp. 1-61 in Zootaxa 3536 on pages 52-53