Morphological differentiation amongst juvenile mitten crabs from Germany and Belgium A juvenile crab from Germany (ID: KC20-02, collected in the Kiel Canal in 2020, E. sinensis mtDNA) with a toothed infraorbital region (brackets) and pointed fourth lateral tooth (arrow) B juvenile crab from Belgium (ID: BE20-05, collected in Belgium in 2020, E. japonica mtDNA) with a lobed infraorbital region and inconspicuous fourth lateral tooth. Scale bars indicate 1 cm. Distribution of morphological characteristics of infraorbital region C and fourth lateral tooth D in respect to mtDNA and origin of individuals. Significant differences between groups are marked by asterisks. Purple colour indicates Japanese mitten crab character states and mtDNA and blue colour indicates Chinese mitten crab character states and mtDNA.

 
 
  Part of: Homberger L, Xu J, Brandis D, Chan T-Y, Keirsebelik H, Normant-Saremba M, Schoelynck J, Chu KH, Ewers-Saucedo C (2022) Genetic and morphological evidence indicates the persistence of Japanese mitten crab mitochondrial DNA in Europe for over 20 years and its introgression into Chinese mitten crabs. NeoBiota 73: 137-152. https://doi.org/10.3897/neobiota.73.72566