Table 2 in Revised systematics, phylogeny, and paleontology of the mayfly family Baetiscidae (Insecta: Ephemeroptera)

Table 2. Adult characters of Balticobaetisca Staniczek and Bechly, 2002 (Ephemeroptera: Baetiscidae).
CharactersBalticobaetisca velteni Staniczek and Bechly, 2002 [female imago]Balticobaetisca stuttgardia Godunko and Krzemiński, 2009 [male imago]Balticobaetisca bispinata sp. nov. [male subimago]MeasurementsBody length [mm]8.509.756.80-7.50Forewings length [mm]9.80-10.1011.60-11.758.30-10.5Hind wings length [mm]3.50-3.553.55-3.602.30-2.75Hind/Fore wings length ratio0.350.310.26-0.28Forewings width/length ratio0.420.440.42-0.44Hind wings width/length ratio0.230.260.26-0.28HeadEyessmall, well separatedlarge, contiguous mediallylarge, contiguous medially or separated by narrow gapEyes [vertical bands]absentabsentabsentThoraxProsternum [prominent bispinate projection]presentpresentpresentMesonotal suture [scutellum]elongateelongateelongateMesothorax [anepisternum]distinctly smaller than katepisternumdistinctly smaller than katepisternumdistinctly smaller than katepisternumMesothorax [furcasternal protuberances]contiguouscontiguouscontiguousForewingWings [colouration]unicolorous, no maculationunicolorous, no maculationunicolorous, no maculationPterostigma [number of cross veins]at least 15, dense row811-13Pterostigma [shape of veins]mainly branched1-2 forked, other unbranchedsimple, unbranchedRS furcation [respectively to vein length]0.180.130.13MA furcation [respectively to vein length]0.540.560.56-0.58CuP and A1 [centrally]divergentnearly parallelnearly parallelA1 [number of veins arising to basitornal margin]8-115-66-7A1 [shape of veins arising to basitornal margin]simple and forked veinssimple and forked veinssimple veinsA1-A2 [number of cross veins]03-54-5Intercalary veins between A1 and A26-101-2absentIntercalary veins between A2 and A3absent1-21Hind wingWing [shape]nearly roundnearly roundnearly roundCostal projection [shape]moderately prominent; roundedprominent; widely rounded apicallyprominent; widely rounded apicallyC-Sc field [number of cross veins in costal area]5-84-5up to 12C-Sc field [shape of cross veins in costal area]simplesimplesimple and forkedC-Sc field [intercalary veins]absentabsentpresentFree short marginal intercalariespresentpresentpresentLegsForetarsi [shape of claws]dissimilar; one blunt, one pointedboth bluntboth bluntAbdomenMid-dorsal transverse evaluation of tergum VIpresentpresentpresentSternum IX [in female]without apical cleft--ParacercusvestigialvestigialvestigialGenitalia (male)Forceps segment I [inner projection]-triangularwidely roundedForceps segment II [shape]-nearly triangularnearly conicalPenis lobes [shape]-blunt apicallyblunt apically