TABLE. Main morphological differences between known species of the monticola - group of the genus Hypogastrura * and H. metegensis sp. nov. in New records of the genus Hypogastrura (Collembola: Hypogastruridae) from the Greater Caucasus, with the description of a new species from the monticola- group

TABLE. Main morphological differences between known species of the monticola -group of the genus Hypogastrura * and H. metegensis sp.nov.
SpeciesSensilla S9 on Ant.IVSetae m6 on Th.IISetae m6 on Th. IIISetae m on Abd.IVSetae m on Abd.VSetae p between sensilla on Abd.VTibiotarsal setaSetae on VTBody granulationDens granulationDens/mucro ratioOuter lamella on mucroAnal spineDistribution areamonticola Stach–++11+113+32+2pointed4+4finefine4–5: 1moderateas long as papillaeCentral Europepapillata Gisin **+++?5+54+42+2blunt or pointed4+4finemoderate3: 1high0.5 as long as papillaeEurope meridionalhispanica Steiner–++6+62+23+3clavate5+5finefine3: 1high, tooth-likeas long as papillaeSpainelevata Cassagnau+??????4+4coarsefine3–4: 1lowas long as papillaeFrance, Pyreneesdasiensis Selga–++5+52+22+2clavate4+4coarsefine or moderate3–4: 1highas long as papillaeSpainsubpapillata Babenko+++6+62(3)+2(3)2+2blunt or slightly clavate4+4coarsecoarse3: 1highslightly smaller than papillaeRussia, Siberiahatiparae Babenko+++5(6)+5(6)0–1 on each side2+2clavate4+4coarsefine3: 1lowminiature on very low papillaeCaucasusherrerosvelai Arbea & Pérez Fernández–––(+)6+6–2+2pointed or blunt4+4finefine3.5–4.5: 1high0.5–0.7 as long as papillaeSpain, cavemetegensis sp.nov.–++variable, up to 6 on each sidevariable, 0–2 on each side2–3 on each sideblunt or slightly clavate4+4moderatefine2.2–3.2:1lowas long as papillaeCaucasus
TABLE. Main morphological differences between known species of the monticola -group of the genus Hypogastrura * and H. metegensis sp.nov.
* based on Skarżyński (2009) and Arbea & Pérez Fernández (2020)
** According to Arbea & Pérez Fernández (2020), H. papillata sensu Jordana et al. 1997, described on the material from Portugal, lacks m6 setae on both Th. II–III. It can be supposed that this is a different, not yet described species.