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8 results for “Motonerus”
Neotropical leaf-litter beetle genus Motonerus (Coleoptera: Hydrophilidae): new species, distribution data and description of third instar larva
<p>Numerous new material of the genus <em>Motonerus </em>Hansen, 1989 (Coleoptera: Hydrophilidae: Sphaeridiinae) was examined over the past decade, resulting in the discovery of several undescribed species as well as new distributional records for most of the previously described species. Three species are here described as new: <em>Motonerus explanatus </em>sp. nov. (Panama), <em>M. inca </em>sp. nov. (Venezuela, Ecuador, Peru, Bolivia) and <em>M. sofiae </em>sp. nov. (Peru). New country records are provided for <em>M. depressus </em>Fikáček & Short (new for Venezuela, Ecuador, Peru and Bolivia), <em>M. hanseni </em>Fikáček & Short (new for Panama) and <em>M. problematicus </em>Fikáček & Short (new for Panama). An updated identification key and distributional maps are provided for all species, along with complete occurrence data in a DarwinCore formatted file. Potential distribution of the genus is modelled using the maximum entropy approach. Wing morphology is examined in detail, which revealed most species are macropterous, with <em>M. andersoni </em>Fikáček & Short being brachypterous, and <em>M. apterus </em>Fikáček & Short, <em>M. oosternoides </em>Fikáček & Short and <em>M. explanatus </em>sp. nov. micropterous. The third instar of the putative larva of <em>M. obscurus </em>Hansen is briefly described based on larvae collected in association with adults.</p>
FIGURES 13–20 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 13–20. Male genitalia of Motonerus. 13–14: M. andersoni sp. n., paratype; 15–16: M. hanseni sp. n., holotype; 17–18: M. obscurus Hansen, paratype; 19–20: M. problematicus sp. n., holotype. 13, 15, 17, 19—aedeagus (scale bar = 0.1 mm); 14, 16, 18, 20—apical part of median lobe (scale bar = 0.05 mm).
FIGURES 54–64 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 54–64. Details of Motonerus. 54, 60, 63: M. apterus sp. n.; 55, 64: M. oosternoides sp. n.; 56: M. depressus sp. n.; 57, 62: M. nublado sp. n.; 59: M. problematicus sp. n.; 61: M. obscurus Hansen. 54–59—epipleuron and lateral part of elytron; 60–62—abdominal ventrites; 63–64—head, lateral view. Scale bar = 0.5 mm (54–59), 0.25 mm (60–62); 0.1 mm (63–64).
FIGURES 41–53 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 41–53. Details of of Motonerus. 41, 49: M. sp. B; 42, 52: M. andersoni sp. n.; 43, 53: M. apterus sp. n.; 44: M. depressus sp. n.; 45: M. hanseni sp. n.; 46: M. oosternoides sp. n.; 47: M. nublado sp. n.; 48: M. obscurus Hansen; 50: M. problematicus sp. n.; 51: M. sp. A. 41— preepisternal elevation of mesothorax and median part of metaventrite (scale bar = 0.2 mm); 42–51—median part of prosternum; 52–53—sternite 9 of male.
FIGURES 5–12 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 5–12. Male genitalia of Motonerus. 5–6: M. apterus sp. n., paratype; 7–8: M. oosternoides sp. n., paratype; 9–10: M. depressus sp. n., holotype; 11–12: M. nublado, holotype. 5, 7, 9, 11—aedeagus (scale bar = 0.1 mm); 6, 8, 10, 12—apical part of median lobe (scale bar = 0.05 mm).
FIGURES 21–31 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 21–31. Lateral habitus of Motonerus. 21: M. apterus sp. n.; 22: M. oosternoides sp. n.; 23: M. depressus sp. n.; 24: M. nublado sp. n.; 25: M. andersoni sp. n.; 26: M. hanseni sp. n.; 27: M. problematicus sp. n.; 28: M. obscurus Hansen (El Salvador); 29: M. obscurus Hansen (Oaxaca prov., Mexico); 30: M. sp. B; 31: M. sp. A. Scale bar = 1 mm.
FIGURES 32–40 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 32–40. Preepisternal elevation of mesothorax and median part of metaventrite of Motonerus. 32: M. apterus sp. n.; 33: M. oosternoides sp. n.; 34: M. depressus sp. n.; 35: M. andersoni sp. n.; 36: M. hanseni sp. n.; 37: M. nublado sp. n.; 38: M. obscurus Hansen; 39: M. problematicus sp. n.; 40: M. sp. A. Scale bar = 0.2 mm.
FIGURES 1–4 in A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)
FIGURES 1–4. Dorsal habitus of Motonerus. 1: M. obscurus Hansen; 2: M. apterus sp. n.; 3: M. andersoni sp. n.; 4: M. depressus sp. n. Scale bar = 1 mm.
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