Lasius Subgenera

Chthonol. bicornis
  • Dorsal surface of t1 with only two rows of erectile silks placed at the posterior and anterior edges. The area between has almost no erectile silks
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  • PE high, upper edge approximately as high as the PP. In caudal view very thin, with an upper edge deeply incised
  • Short and strongly flattened scapus : SL/CL 0,812±0,010
    SMAX/SMIN 1,743±0,072
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        Hungary, South Slovakia, South Austria
    Cautolasius
  • Erectile setae on the whole dorsal surface of t1
  • Absence of erectile silks on the upper face of the cranium. Do not count the long laying and fine silks
  • Transition masticatory/basal edge forms a distinct angle
  • PE large and in front view obtuse if CW > 700 µm then scale sides diverge from base upward then converge a bit higher
  • Whole Palaearctic
    • Chthonolasius
  • Erectile setae on the whole dorsal surface of t1
  • Rear head always with a few or numerous erectile silks, which are stronger, longer and far more erectile than the pubescences that rise only from 0° to 30°
  • Transition masticatory/basal edge forms a curve
  • PE slighter, sides are parallel or continuously converging toward apex. Apex pointed but very variable
  • Whole Palaearctic