S. Mahunka szerk.: Folia Entomologica Hungarica 51. (Budapest, 1990)

- Laraellar setae: 1. They arise medially, far from the lateral carinae (or from a ficticious line in its place) . The distance between these setae is much shorter than the distance between a seta and the lateral carina (e.g. Protoribotritia

), 2. They arise laterally, very near the lateral carinae. The distance between the two setae is several times longer than the distance between a seta and the lateral carina (e.g. Austrotritia) . - Interlamellar setae: 1. They originate in interbothridial position, comparatively near to each other (e.g. Euphthiracarus) , or 2. They stand far from each other, above the bothrydium, or very near to them, sometimes in front of them (e.g. Microtritia) . Their ciliate or smooth condition * is highly variable also in very closely related taxa

. Among the different parts of the trichobothrium the sensillus is very often setiform, its varieties do not fit into this evolutionary line, nor do they distinguish any supraspecific taxa. In contrast with them the position (above or below the bothridium) of the bothridial squama lid, scale is very important, and well characterise the genera. Brachytracheae or. tracheoles also adjoin the bothrydium, their presence (or absence)

, their numbers and shape indicate suprageneric features (Grandjean 1967), but this problem needs further investigations

. Notogaster: Its shield is mostly compressed laterally, amygdaloid, rarely boat-shapedT~ït~is split ventrally by a V-shaped fissure, or having two almost touching lobes ventrally. Strong structures (deep hollows or protuberances) only exceptionally present on its surface (e.g. Euphthiracarus humeralis Norton et Metz, 1977). Notogastral surface with 14 ( rarely 15) normal setae and the insertions of even the vestigial fand f 2 setae are observable

. The shape of the setae also highly varying, having no significance for supraspecific taxa. Normally five pairs of lyrifissures (ia, im, ih, rg, ips

) present, rarely this number can be less; ih, ip or ips may be a"b~sent

. The postero-ventral end with a terminal sinus or~^EermTnal fissure for the plicature plates; before the latter an unpaired median porus perceptible. These characters are all uncertain, having no supraspecific value. Egimeral_re2ion: The setal formula could very also at specific level. Unfortunately, only a very few data are available. The basic formula appears to be: 3-1-2-2. Y.êGtïËl-ïËSiSui Its form is determined by the shape of the notogastral shield. If this region is completely open (e.g. Euphthiracaridae)

, then the plates of the anogenital region and also the plicature plates are well observable. If this region is partly covered by the lobes of the lateroventral part of the notogaster, then they are only partly (the plicature plates never) visible (e.g. Temburongiidae)

. Ano2enital_re_2ion

: The discernability of the original four pairs of the separate plates, or their partial or complete fusion, and the connecting state of each other yield very good features to the identification and derivation of the relationships-of supraspecific taxa. The borders of the plates are shown by complete or incomplete longitudinal sutures, in lack of them the setae might indicate the original borders of the plates

. Between the genital and anal plates (also between the genito-aggenital and ano-adanal ones the anogenital cleft (sillon transversal) is mostly observable. Its length and direction also characterise the supraspecific taxa. The anteroaxial part or the genital plates is sometimes elongated, forming a long free lobe, either with or without setae. This part often accrete to the anterior part of the aggenital plate

. On the anterior part of this latter plate - a mostly strong - transversal tectum (kag ) is observable, along this line the bent aspis is consistent with the anogenital region. The two genital and the two anal plates may be joined either by a short internal apodeme (Querbrücke) or by an (or two) interlocking triangle (Verbindungsdreieck) . Their presence or absence, or the number of the latter two must be a supraspecific character. *See Woas (1981), or Niedbala (1986b).