Poblaciones meridionales de Lasius flavus (Fabr.) y L. myops Forel : estudio biométrico (Hymenoptera, Formicidae)

Counts of ommatidia number versus maximum head width in 469 workers of the ant species Lasius flavus (Fabr. ) and Lasius myops Forel provide evidence that the rule proposed by Seifert (1983) for central european populations is useful to differentiante meridional populations of both species. The head colour pattern of females and mandibular dentition of males can also be used as identification tools. There seems to be no geographical variation concerning these morphological characteristics. L. flavus nests at higher altitudes ​
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