Trigonotylus
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publication ID |
https://doi.org/ 10.5281/zenodo.279906 |
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DOI |
https://doi.org/10.5281/zenodo.6178593 |
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persistent identifier |
https://treatment.plazi.org/id/03FEBF64-BD0E-1A3C-D6D1-FDDF08ABF8D5 |
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treatment provided by |
Plazi |
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scientific name |
Trigonotylus |
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Key to species of Trigonotylus View in CoL View at ENA from British Columbia, Yukon, adjacent Northwest Territories and Alaska, and the northwestern United States
1. Hind tibia strongly pilose.......................................................... longipes Slater and Wagner
- Hind tibia not strongly pilose............................................................................ 2
2. Antennal segment I thickened ( Fig. 1 View FIGURE 1 B)...................................................... antennatus Kelton View in CoL
- Antennal segment I slender ( Figs. 1 View FIGURE 1 A, C–G)................................................................ 3
3. Antennal segment I dark, often completely dark brown to black; if segment I dark with pale mediodorsal stripe practically spanning full length of segment, than setae fine ( Figs. 1 View FIGURE 1 E–F)................................................... 4
- Antennal segment I pale, usually pale yellowish green or greenish brown to darker orange brown, often with indistinct reddish brown to brown stripes on apical region that reach beyond the midpoint of the segment; sometimes with three distinct red to reddish brown longitudinal stripes; if segment I slightly darkened with pale mediodorsal stripe practically spanning full length of segment, than setae stiff ( Figs. 1 View FIGURE 1 A, C, E, G)............................................................... 6
4. Antennal segment I less than length of pronotum; segment II short (1.33–1.57 in males and 1.47–1.83 in females); endosomal spicule short and straight ( Fig. 2 View FIGURE 2 ).............................................................. brooksi Kelton View in CoL
- Antennal segment I equal to or longer than length of pronotum; segment II long (2.10–2.50 in males and 2.23–2.65 in females); endosomal spicule either long and straight or long and gently twisted ( Figs. 1 View FIGURE 1 J–K, 2)........................ 5
5. Antennal segment I with fine moderate length brown, suberect setae ( Fig. 1 View FIGURE 1 D); endosomal spicule straight ( Figs. 1 View FIGURE 1 J, 2).................................................................................................. exilis View in CoL sp. n.
- Antennal segment I with coarse or stout moderate length black suberect setae; ( Fig. 1 View FIGURE 1 F) endosomal spicule gently twisted ( Figs. 1 View FIGURE 1 K, 2)............................................................................... setosus View in CoL sp. n.
6. Endosoma without spicule and with field of spines basal to secondary gonopore; antennal segment I with three red to reddish brown longitudinal stripes ( Fig. 1 View FIGURE 1 C); labium longer than 1.7 mm [does not apply in Yukon Territory]; apex of clypeus rather pointed in dorsal view............................................................... caelestialium (Kirkaldy) View in CoL
- Endosoma with spicule and either with or without field of spines basal to secondary gonopore ( Fig. 2 View FIGURE 2 ); antennal segment I without three reddish stripes; possibly diffusely red or reddish brown with pale mediodorsal stripe, or with diffuse reddish brown apical crown ( Figs. 1 View FIGURE 1 A, G); labium less than 1.7 mm [does not apply in Yukon Territory]; apex of clypeus narrow or slightly rounded in dorsal view........................................................................... 7
7. Endosomal spicule small and twisted ( Fig. 2 View FIGURE 2 ); body length short (3.80–4.50 in males and 4.18–5.30 in females); antennal segment I short (0.56–0.65 in males and 0.56–0.78 in females), pale green with contrasting black setae ( Fig. 1 View FIGURE 1 E, distal segments yellowish orange; female with hemelytral membrane usually not surpassing proctiger................. flavicornis Kelton View in CoL
- Endosomal spicule either large and curved or small and straight with apex somewhat expanded ( Fig. 2 View FIGURE 2 ); body length long (4.70–6.10 in males and 5.50–7.10 in females); antennal segment I long (0.60–0.86 in males and 0.60–0.94 in females) with variable coloration and setae (Figs. A, G); remaining segments with variable coloration; female with hemelytral membrane usually surpassing proctiger............................................................................. 8
8. Endosoma with long curved spicule, without field of spines basal to secondary gonopore ( Fig. 2 View FIGURE 2 ); Antennal segment I with stiff black setae ( Fig. 1 View FIGURE 1 G); antennal segment II, distal portion of hind tibia, and tarsomeres I and II usually not suffused with red....................................................................................... viridis (Provancher) View in CoL
- Endosoma with short straight spicule, with field of spines basal to secondary gonopore ( Fig. 2 View FIGURE 2 ); antennal segment I with finer black setae ( Fig. 1 View FIGURE 1 A); antennal segment II, distal portion of hind tibia and tarsomeres I and II usually suffused with red.......................................................................................... americanus Carvalho View in CoL
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