Macrolygistopterus
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publication ID |
https://doi.org/ 10.11646/zootaxa.4105.4.2 |
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publication LSID |
lsid:zoobank.org:pub:07266FCB-8D6E-4AEA-9159-ECE7D8D31ED0 |
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DOI |
https://doi.org/10.5281/zenodo.6057057 |
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persistent identifier |
https://treatment.plazi.org/id/03CC878F-FF93-FFEE-FF1C-2BB3C3FE2AD0 |
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treatment provided by |
Plazi |
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scientific name |
Macrolygistopterus |
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Key to the species of Macrolygistopterus
1. Elytra entirely bluish black.............................................................................. 2
- Elytra with basal portion testaceous or reddish and apical third to half black or bluish black........................... 3
2. Apical portion of elytra widened; costa I subapically fused with costa IV, forming an arch subapically; costa II approximately touching the middle apex of the arch formed by costae III+IV; costa III partially obliterated after elytral apical half, fused with costa II and IV at the 4/5 elytral ( Figs. 3 View FIGURES 1 – 9 , 29 View FIGURES 27 – 35 ). Pronotum trapezoidal, glabrous, with anterior and lateral margins thickened, pronounced ( Fig. 21 View FIGURES 19 – 26 ).............................................................. M. caeruleus (Gorham, 1881)
- Elytra subparallel, not broadened distally; elytral costae I and II apically fused; costa III and IV fused apically ( Figs. 5 View FIGURES 1 – 9 , 31 View FIGURES 27 – 35 ). Pronotum rectangular, densely pubescent, with anterior and lateral margins thin ( Fig. 23 View FIGURES 19 – 26 ).......... M. grandjeani Pic, 1930
3. Pronotum black, glabrous, strongly sculptured ( Fig. 19 View FIGURES 19 – 26 ), if testaceous with a slender black stripe restricted to the middle of the median elevations. Arrangement of elytral costae: costa I subapically obliterated, costae II and IV subapically fused forming an arch; costa III apically fused with the arch formed by costae II+IV, with parallel lines between costae II and III, in some specimens parallel lines very obliterated ( Figs. 1 View FIGURES 1 – 9 , 27 View FIGURES 27 – 35 )................................. M. succinctus ( Latreille, 1811)
- Pronotum testaceous, scarcely pubescent, with a broad black longitudinal stripe. Arrangement of elytral costae not like above....................................................................................................4
4. Pronotum more or less pentagonal, with anterior margins rounded................................................ 5
- Pronotum more or less subtrapezoidal.....................................................................6
5. Rostrum short ( Fig. 18 View FIGURES 10 – 18 ); costa I and II apically fused, forming an arch; costa III subapically fused with the arch formed by costae I+II; costa IV following alone without touching the elytral apex ( Fig. 35 View FIGURES 27 – 35 )........................ M. kirschi Pic, 1931
- Rostrum long ( Fig.17 View FIGURES 10 – 18 ); costae I and IV apically fused, forming an arch, with elytral 4/5 strongly obliterated; costa III obliterated at elytral 4/5; costa II reaching elytral apex, crossing the arch formed by costae I+IV, obliterated after the arch ( Fig. 35 View FIGURES 27 – 35 )..................................................................................... .. M. simoni Pic, 1930
6. Elytral costa I reaching elytral apex, subapically obliterated; costae II and IV subapically fused, forming an arch, subapically obliterated; costa III not touching the arch formed by costae II+IV ( Fig. 30 View FIGURES 27 – 35 ). Adjacent area of scutellum black ( Fig. 30 View FIGURES 27 – 35 )....................................................................................... M. germaini Pic, 1930
- Arrangement of elytral costae not like above. Adjacent area of scutellum of the same color of basal portion of elytra....... 7
7. Costa I and II fused subapically, apex of costa I apically obliterated; costa III subapically obliterated and fused to the outer margin of II; costa IV reaching elytral apex, with an oblique obliterated line linking costa II and IV ( Fig. 32 View FIGURES 27 – 35 )............................................................................................. M. subparallelus Pic, 1930
- Costa I and IV not fused to any other, both free; costae II and III subapically fused, this fusion continuing into a single costa (II+III); elytral costae not reaching elytral apex. Rostrum black or testaceous..................................... 8
8. Rostrum testaceous; apical region of ventrite VII of females notched, forming two acuminated apices ( Fig. 40 View FIGURES 36 – 40 ); antennomere IV subequal to III in width; elytral costae slightly distinct ( Figs. 8 View FIGURES 1 – 9 , 33 View FIGURES 27 – 35 )...................... M.testaceirostris Pic, 1930
- Rostrum black; apical region of ventrite VII of females notched, forming two rounded apices ( Fig. 37 View FIGURES 36 – 40 ); antennomere IV distinctly wider than the others; elytral costa distinctly visible ( Figs. 2 View FIGURES 1 – 9 , 28 View FIGURES 27 – 35 )................ M. quadricostatus ( Buquet, 1842)
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