Tetrabothrus species
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publication ID |
https://doi.org/ 10.5281/zenodo.5414012 |
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persistent identifier |
https://treatment.plazi.org/id/0396774B-FF96-FFF2-FE0E-BF60FBEFF99F |
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treatment provided by |
Marcus |
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scientific name |
Tetrabothrus species |
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Key to the Tetrabothrus species of China
C o m m e n t: For a key to the Tetrabothrus species of Taiwan see PACE (2010). Tetrabothrus bicolor CAMERON, 1939 from Burma is readily distinguished from all the species keyed below by its coloration alone (forebody black; abdomen red; legs blackish- brown; antennae black).
1. Elytra conspicuously short, approximately 0.55 times as long as pronotum ( Fig. 16 View Figs 12-17 ). Hind wings and palisade fringe at the posterior margin of the abdominal tergite VII reduced ( Fig. 20 View Figs 18-23 ). Antenna 1.7 mm long ( Fig. 19 View Figs 18-23 ). Abdomen broader than elytra. Median lobe of aedeagus as in Figs 21-22 View Figs 18-23 . Paramere with long and slender apical lobe ( Fig. 23 View Figs 18-23 ). Yunnan ( Map 1 View Map 1 ) ...................................................................... brevalatus View in CoL nov.sp.
- Elytra longer, at least approximately 0.85 times as long as pronotum. Hind wings and palisade fringe at the posterior margin of the abdominal tergite VII fully developed. Antenna shorter. Abdomen narrower than elytra. Sexual characters different...................2
2. Forebody distinctly bicoloured: pronotum pale-reddish, strongly contrasting with the blackish posterior portion of the head and the blackish elytra. Head strongly transverse,> 1.3 times as broad as long. Eyes much longer than distance from posterior margin of eye to posterior constriction of head ( Fig. 24 View Figs 24-28 ). Abdomen broader, with more transverse segments ( Fig. 26 View Figs 24-28 ). Tergite VIII and sternite VIII strongly transverse ( Figs 27-28 View Figs 24-28 ). Northern Sichuan ( Map 1 View Map 1 )....................................................................... rubricollis View in CoL nov.sp.
- Forebody not distinctly bicoloured, more or less uniformly reddish to dark-brown. Head less transverse, <1.3 times as broad as long. Eyes shorter than distance from posterior margin of eye to posterior constriction of head. Abdomen more slender and with less transverse segments. Tergite VIII and sternite VIII less transverse.....................3
3. Legs pale-yellowish, mostly with the apices of the femora weakly to distinctly infuscate..............................................................................................................................4
- Legs reddish-brown to brown, with the bases of the femora paler at most.........................5
4. Apices of the femora very narrowly and indistinctly infuscate at most. Anterior angles of pronotum visible in dorsal view. Median lobe of aedeagus smaller, 0.45 mm long at most, and with short, strongly angled ventral process ( Figs 15-16 View Figs 12-17 ). Paramere smaller and with shorter apical lobe ( Fig. 17 View Figs 12-17 ). Western Yunnan ( Map 1 View Map 1 ) ............... inflexus View in CoL nov.sp.
- Apices of the femora broadly and distinctly infuscate. Anterior angles of pronotum not visible in dorsal view. Median lobe of aedeagus larger, 0.5 mm long, and with smoothly curved ventral process. Paramere larger and with longer apical lobe ( Fig. 6 View Figs 1-8 ). Yunnan, North Sichuan ( Map 1 View Map 1 ) ..................................................................... cavus View in CoL nov.sp.
5. Basal half to two-thirds of femora yellowish. Head with obtusely marked posterior angles ( Fig. 30 View Figs 29-32 ). Pronotum less convex and more transverse, 1.13 times as broad as long ( Fig. 29 View Figs 29-32 ). Apical portion of abdomen moderately tapering ( Fig. 32 View Figs 29-32 ). Median lobe of aedeagus larger, 0.57 mm long and shaped as in PACE (2012: figures 21-22). Paramere> 0.6 mm long. Border region between Shaanxi, Chongqing, and Hubei ( Map 1 View Map 1 ). ....................................................................................................... chinensis PACE View in CoL
- Femoral bases only narrowly and indistincly paler than remainder of femora and tibiae. Posterior angles of head obsolete. Pronotum more convex in cross section and less transverse. Apical portion of abdomen strongly tapering ( ASSING 2009: figures 16, 32). Median lobe of aedeagus 0.5 mm long and shaped as in ASSING (2009: figures 19-20). Paramere 0.5 mm long. Northwestern Yunnan ( Map 1 View Map 1 )................................. puetzi ASSING View in CoL
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