Chionomus, Fennah, 1971
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publication ID |
https://doi.org/10.11646/zootaxa.4811.1.1 |
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publication LSID |
lsid:zoobank.org:pub:EB3E2796-D738-405B-AAB7-4D8209214114 |
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DOI |
https://doi.org/10.5281/zenodo.4335520 |
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persistent identifier |
https://treatment.plazi.org/id/9C5C87C4-AB47-FFFB-FF2E-FC71FA0EFECE |
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treatment provided by |
Plazi (2020-07-14 09:30:06, last updated 2023-10-31 19:43:28) |
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scientific name |
Chionomus |
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Key to males of the Genus Chionomus View in CoL View at ENA
1. Armature of diaphragm distinctly bilobed ( Figures 6i View FIGURE 6 , 28a View FIGURE 28 , 29a View FIGURE 29 ).............................................. (2).
- Armature of diaphragm not distinctly bilobed, may be cordate, notched, or U-shaped ( Figures 19a View FIGURE 19 , 25a View FIGURE 25 , 30a View FIGURE 30 )........... (5).
2. Armature of diaphragm hooked, lobes parallel; processes of segment X present but not particularly strong, specimens with carinae of the mesonotum lightened frequently forming a vitta ( Figures 6 View FIGURE 6 , 22 View FIGURE 22 , 13 View FIGURE 13 , 28 View FIGURE 28 )............................. (3).
- Armature of diaphragm not hooked, lobes distinctly diverging; processes distinct and directed ventrad, carinae of mesonotum concolorous ( Figures 5 View FIGURE 5 , 21 View FIGURE 21 , 14 View FIGURE 14 , 29 View FIGURE 29 )..................................................................... (4).
3. Armature of diaphragm hooked only in apical half, lobes only diverging in apical half; aedeagus with toothed flange on left side ( Figures 6 View FIGURE 6 , 22 View FIGURE 22 )............................................................................. C. bellicosus View in CoL .
- Armature of diaphragm hooked along entire length, lobes diverging from point of origin; aedeagus without flange, with two rows of scattered teeth ( Figures 13 View FIGURE 13 , 28 View FIGURE 28 )........................................................... C. pacificus View in CoL .
4. Lobes of armature of diaphragm small and closely approximated; processes of segment X parallel. Posterior edge of pronotum dark, only paranota white in color ( Figures 5 View FIGURE 5 , 21 View FIGURE 21 )................................................. C. banosensis View in CoL .
- Lobes of armature of the diaphragm produced, diverging from point origin; processes of segment X diverging. Posterior edge of pronotum white, paranota also white ( Figures 14 View FIGURE 14 , 29 View FIGURE 29 )............................................... C. puellus View in CoL .
5. Pygofer with prominent quadrate, dorsolateral process. Parameres not flattened at apex. ( Figures 12 View FIGURE 12 , 27 View FIGURE 27 )......... C. herkos View in CoL .
- Pygofer without dorsolateral processes, if produced at dorsolateral margin, not quadrate. Parameres flattened at apex. ( Figures 19 View FIGURE 19 , 23 View FIGURE 23 , 26 View FIGURE 26 )......................................................................................... (6).
6. Segment X with a total of 4 processes ( Figures 23b View FIGURE 23 , 24b View FIGURE 24 , 25b View FIGURE 25 , 30b View FIGURE 30 )............................................ (7).
- Segment X with only 2 processes or processes vestigial ( Figures 19b View FIGURE 19 , 20b View FIGURE 20 , 26b View FIGURE 26 , 31b View FIGURE 31 )............................. (10).
7. Secondary processes of segment X small, spine-like. Armature of diaphragm shelf-like. Ventral margin of pygofer with caudally projecting median process ( Figures 9 View FIGURE 9 , 24 View FIGURE 24 )..................................................... C. dolonus View in CoL .
- Secondary processes of segment X long, sinuate. Armature of diaphragm quadrate, quadrate and notched, or U-shaped. Ventral margin of pygofer lacking median process ( Figures 23 View FIGURE 23 , 25 View FIGURE 25 , 29 View FIGURE 29 )............................................... (8).
8. Armature of diaphragm quadrate or cordate/notched, toothed along vertical margins; aedeagus not distinctly enlarged at base ( Figures 23a, c View FIGURE 23 , 25a, c View FIGURE 25 )............................................................................... (9).
- Armature of diaphragm U-shaped, lacking teeth; aedeagus with distinctly enlarged, quadrate base ( Figures 29 a, b View FIGURE 29 ).............................................................................................. C. quadrispinosus View in CoL .
9. Armature of diaphragm notched along ventral margin; aedeagus with slight enlargement apically. Parameres not produced opposite of basal angle. Posterior compartments of vertex and stem of Y-shaped carina dark ( Figures 10 View FIGURE 10 , 25 View FIGURE 25 )... C. gluciophilus View in CoL .
- Armature of diaphragm quadrate, notch along ventral margin not evident; aedeagus tapering along entire length, not enlarged apically. Parameres with rounded projection opposite of basal angle. Posterior compartment of vertex light but with fuscous markings, stem of Y-shaped carina light ( Figures 8 View FIGURE 8 , 23 View FIGURE 23 )............................................. C. dissipatus View in CoL .
10. Aedeagus nearly straight, may have slight dorsal curve ( Figures 19b View FIGURE 19 , 20c View FIGURE 20 , 26c View FIGURE 26 )................................. (11).
- Aedeagus with distinct curve dorsad, nearly forming a right-angle apical hook on left, small teeth along length. Segment X with two rounded processes, lobe-like, arising from the middle of segment. Specimens frequently large for Chionomus View in CoL , with wings infuscate ( Figures 17 View FIGURE 17 , 31 View FIGURE 31 )......................................................................... C. tenae View in CoL .
11. Aedeagus with subapical and distinctly projecting flagellum, lacking teeth and hooks ( Figure 19b View FIGURE 19 )............ C. havanae View in CoL .
- Aedeagus without flagellum, with hooks and/or teeth ( Figures 20c View FIGURE 20 , 26c View FIGURE 26 )....................................... (12).
12. Aedeagus with large hooks on right side of aedeagus; apex of parameres anvil shaped ( Figures 20b,c View FIGURE 20 ).......... C. balboae View in CoL .
- Aedeagus with small teeth in two scattered rows, lacking any sort of hook; apex of parameres quadrate ( Figures 26b,c View FIGURE 26 )............................................................................................... C. haywardi View in CoL .
FIGURE 5. Habitus of Chionomus banosensis (holotype; terminalia in balsam); A. dorsal view, habitus; B. frontal view, habitus; C. lateral view, habitus; D. calcar; E. anal tube, right lateral view; F. pygofer, caudal view; G. hind tarsus, ventral view; H. paramere, widest view (right paramere from underside); I. aedeagus, left lateral view.
FIGURE 6. Habitus of Chionomus bellicosus (holotype; A, C, E-I; holotype terminalia in balsam); A. dorsal view, habitus brachypterous holotype; B. dorsal view, habitus macropter; C. lateral view, habitus brachypterous holotype; D. lateral view, habitus macropter; E. labels of holotype; F. front habitus of holotype; G. aedeagus and anal tube of holotype, left lateral view; H. parameres of holotype, caudal view; I. pygofer of holotype, caudal view, J. lateral view of male terminalia, left lateral view.
FIGURE 8. Habitus of Chionomus dissipatus (holotype; A, C, E-F); A. habitus dorsal view, brachypterous holotype; B. habitus dorsal view, macropter; C. habitus lateral view, brachypterous holotype; D. habitus lateral view, macropter; E. labels of holotype; F. habitus front of holotype; G. caudal view of male terminalia; H. left lateral view of male terminalia.
FIGURE 9. Habitus of Chionomus dolonus n. sp.(holotype); A. dorsal habitus; B. lateral habitus; C. frontal habitus; D. male terminalia, left lateral view, E. male terminalia, caudal view; F. male terminalia, ventral view.
FIGURE 10. Habitus of Chionomus gluciophilus (holotype, C, E, G, H embedded in balsam). A. dorsal habitus; B. labels of holotype; C. aedeagus; D. lateral habitus; E. parameres, caudal view; F. frontal habitus; G. anal tube, semilateral view; H. pygofer, caudal view.
FIGURE 12. Habitus of Chionomus herkos n. sp. A. Dorsal view, habitus (holotype); B. lateral view, habitus (holotype); C. frontal habitus; D. pygofer, lateral view; E. pygofer, caudal view.
FIGURE 13. Habitus of Chionomus pacificus. A. dorsal habitus; B. lateral habitus; C. frontal habitus; D. male terminalia, left lateral view; E. male terminalia, caudal view.
FIGURE 14. Habitus of Chionomus puellus. A. dorsal habitus; B. lateral habitus; C. frontal habitus D. male terminalia, left lateral view; E. male terminalia, caudal view.
FIGURE 17. Habitus of Chionomus tenae (A-C paratype of Delphacodes arcuata Beamer, Lower Matecumbe Key, Florida). A. dorsal habitus; B. lateral habitus; C. frontal habitus, D. male terminalia, left lateral view, E. male terminalia, caudal view.
FIGURE 19. Line art of Chionomus havanae terminalia, A. pygofer, caudal view, B. aedeagus and anal tube, left lateral view, C. left paramere, widest view.
FIGURE 20. Line art of Chionomus balboae terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 21. Line art of Chionomus banosensis terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 22. Line art of Chionomus bellicosus, terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 23. Line art of Chionomus dissapatus, terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 24. Line art of Chionomus dolonus n. sp., terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 25. Line art of Chionomus gluciophilus, terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 26. Line art of Chionomus haywardi, terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view; D. left paramere, widest view.
FIGURE 27. Line art of Chionomus herkos n. sp. terminalia, A. pygofer, caudal view, B. anal tube and aedeagus, left lateral view, C. left paramere, widest view.
FIGURE 28. Line art of Chionomus pacificus terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. aedeagus, left lateral view, D. left paramere, widest view.
FIGURE 29. Line art of Chionomus puellus terminalia, A. pygofer, caudal view, B. anal tube, left lateral view, C. anal tube, caudal view, D. aedeagus, left lateral view, E. left paramere, widest view.
FIGURE 30. Line art of Chionomus quadrispinosus terminalia, A. pygofer, caudal view, B. anal tube and aedeagus, left lateral view, C. left paramere, widest view.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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