Table 1 in Postembryonic development in freshwater crayfish (Decapoda: Astacidea) in an evolutionary context

Table 1. Comparison of the morphologs of postembrsonic stages of European Astacidae and American Astacidae.
European AstacidaeAmerican AstacidaeAustropotamobius torrentium (von Paula Schrank, 1803) 1)Austropotamobius fulcisianus (Ninni, 1886) 2,3)Astacus astacus (Linnaeus, 1758) 4)Pontastacus leptodactylus (Eschscholtz, 1823) 4)Pacifastacus leniusculus (Dana, 1852) 5)Stage IEseStalk absentStalk absentStalk absentStalk absentStalk absentCarapaceRostrum bent downward, carapace globular without setaeRostrum bent downward, carapace globular without setaeRostrum bent downward, carapace globular without setaeRostrum bent downward, carapace globular without setaeRostrum bent downward, carapace globular without setaeAntenna 1Seta absent, internal and external flagellum with 4 segmentsSeta absent, internal and external flagellum both with 3 segmentsSeta absent, internal and external flagellum with 4–7, 5–7 segmentsSeta absent, internal and external flagellum with 4–7, 5–7 segmentsSeta absent, internal and external flagellum both with 5 segmentsAntennal scaleSeta absentSeta absentSeta absentSeta absentSeta absentAntenna 2Seta absent, flagellum with 50 segmentsSeta absentSeta absent, flagellum with 50 segmentsSeta absent, flagellum with 40 segmentsSeta absent, flagellum with 50 segmentsMandibleDentition absentDentition absentDentition absentDentition absentDentition absentMaxilla 1Seta presentSeta presentSeta presentSeta presentSeta presentMaxillipedSeta on distal end of exopodite absentSeta on distal end of exopodite absentSeta on distal end of exopodite absentSeta on distal end of exopodite absentSeta on distal end of exopodite absentPereiopod tipRecurved hookRecurved hookRecurved hookRecurved hookRecurved hookPereiopodSeta absentSeta absentSeta absentSeta absentSeta absentPleopodSeta absentSeta absentSeta absentSeta absentSeta absentTelsonRound shape with 50 marginal conate setaeRound shape with 50–55 marginal conate setaeRound shape with 57 marginal conate setaeRound shape with 57–60 marginal conate setaeRound shape with 66 marginal conate setaeStage IIEseStalk presentStalk presentStalk presentStalk presentStalk presentCarapaceLess globularLess globularLess globularLess globularLess globularAntenna 1Seta present, internal and external flagellum both with 4–7, 5–7 segmentsSeta presentSeta present, internal and external flagellum both with 4–7, 5–7 segmentsSeta present, internal and external flagellum both with 4–7, 5–7 segmentsSeta present, internal and external flagellum both with 5 segmentsAntennal scaleSeta presentSeta presentSeta presentSeta presentSeta presentAntenna 2Seta present, flagellum with 42–49 segmentsSeta presentSeta present,flagellum with 60 segmentsSeta present,flagellum with 50 segmentsSeta present,flagellum with 54 segmentsMandible Maxilla 1Dentition present Seta presentDentition present Seta presentDentition present Seta presentDentition present Seta presentDentition present Seta presentMaxilla 2Scaphognathite with 1 longer multidenticulate setae on distal partScaphognathite with 1 longer multidenticulate setae on distal part*Scaphognathite with 1 longer multidenticulate setae on distal part**Scaphognathite with 1 longer multidenticulate setae on distal partScaphognathite with 1 longer multidenticulate setae on distal partMaxillipedSetae on distal end of exopodite presentSetae on distal end of exopodite presentSetae on distal end of exopodite presentSetae on distal end of exopodite presentSetae on distal end of exopodite presentPereiopod tip Pereiopod PleopodCurved spine Seta present Seta presentCurved spine Seta present Seta presentCurved spine Seta present Seta presentCurved spine Seta present Seta presentCurved spine Seta present Seta presentTelsonRound shape with 51–53 plumose setae and 15–18 long simple setae along marginRounded shape with plumose setae and acuminate setae along marginRound shape with 50–60 plumose setae and 15–25 simple setae along marginRound shape with 50–60 plumose setae and 15–25 simple setae along marginRound shape with 46 plumose setae and 20 simple setae along marginStage III Antenna 1Seta present?Seta presentSeta presentSeta presentAntennal scaleSeta present?Seta presentSeta presentSeta presentAntenna 2 Maxilla 1Seta present Seta present? Seta presentSeta present Seta presentSeta present Seta presentSeta present Seta presentMaxillipedSetae on distal end of exopodite present?Setae on distal end of exopodite presentSetae on distal end of exopodite presentSetae on distal end of exopodite presentPereiopod tipCurved spine?Curved spineCurved spineCurved spineTelsonSegmented with long plumose setae?Segmented with long plumose setaeSegmented with long plumose setaeSegmented with long plumose setae