Table 1 in Towards elucidating species diversity of European inland Strigamia (Chilopoda: Geophilomorpha): a first reassessment integrating multiple lines of evidence

Table 1. Morphological characters analysed for their variation in 11 populations of Strigamia (Supporting Information, Tables S2 and S4) and used in the species delimitation analysis in 52 specimens (Supporting Information, Table S3). Characters are listed in anatomical order, anterior to posterior, and the evaluation method is indicated for each of them as follows: i = by incident light with stereomicroscope; t = by transmiưed light with biological microscope. Variation with body size and differences between sexes are indicated when their effects were statistically significant in the GLMMs (see the Materials and Methods; also, Supporting Information, Table S4). Arrows indicate either increase (↑) or decrease (↓) with body size.
CharacterOperational definitionVariableEvaluationVariationDifferencesConsideredCorrectiontypemethodwith bodybetween sexesfor speciesfor speciessizedelimitationdelimitationHead elongationHead length/widthContinuoustYes↓YesNoArrangement of clypealSetae on anterior clypeus: three groups vs.BinarytNoNoYesNosetaecontinuous rowRelative size of forcipularForcipular tergite/head lengthContinuoustYes↑NoNotergiteRelative separation ofDistance between condyles of coxosternite/ContinuoustYes↓NoNoforcipulesbasal width of trochanteroprefemurPresence of projection onInternal margin of forcipular tibia:only smallBinarytNoNoYesNoforcipular tibiatubercle or shallow bump vs.large projectionRelative size of forcipularDistance between tip of tarsungulum andContinuoustYes↓NoNotarsungulumforcipular external hinge/distance betweencondyles of coxosterniteRelative size of forcipularDistance between tip of forcipular den-ContinuoustNoNoYesNodenticleticle and forcipular external hinge/distancebetween tip of tarsungulum and forcipularexternal hingeShape of forcipular den-External and internal margins of denticleBinarytNoNoYesNoticleof forcipular tarsungulum:approximatelystraight vs. distinctly curvedShape of forcipularIntermediate part of external and internalBinarytNoNoYesNoungulummargins of forcipular tarsungulum: uni-formly convergent vs. sub-parallelNumber of legsNumber of leg-bearing segmentsMeristiciNoYesYes+2 if malePresence of stripe on an-Mid-longitudinal sclerotized stripe at 20%BinaryiNoNoYesNoterior sternitesof the series of trunk sternites:absent vs.presentNumber of coxal poresMaximum number of coxal pores betweenMeristictYes↑YesYes+1 if male, andthe two coxopleuradivided by (head width)2Size of coxal poresMaximum diameter of coxal poresContinuoustYes↑NoYesDivided by headwidth