Acta Zoologica Academiae Scientiarum Hungaricae

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hiackened gaster and by a flenderer, AOmewhat even Ahorter marginalis. The third paralypeis much smaller than the others, but Ahows practicatly the sume characters ag the holotype.

The ne v species is ne are St to E. flaviniana BOII., and differs froni it mainly by the lack of the postgenal lamella and the shorter marginalis. EURYTOΜΛ SPECIES FOUND IN MONGOLIA

Acta Mologica Academiae Scientiarum Hungaricae 22, 2976

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Acta MOImica Academiae Scientiarum Hungarieae 22, I976

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Critical re marks on identification keys based On antennal morphOIOgy; On theuse of male genitalia in classification; on the European species of the betulae-grOuΡ; On the place of A. mirus BERGROTII, 1894, in the system; description of the hitherio unknown male of A. huthyi HORVATII, 1899.

the antennal seatures are well-known; had ly prepared antennae are miStea ling, miSSing antennae reniter identification impossitile. And there are also other problem8. N early ali keys include in exact coupleis, e . g. Seconii antennaljoint glightlyistrongly thichen ingV. This can he misinterpreteil even is figuresare giVen, und the antennae may Vary With in the species. The antennae Ofmales and iam ales frequently differ, and this te ads to the state1nent 2. Fithler-

Acta ZOOIogica Academiae Scientiarum Hungaricae 22, 1976

195쪽

On the male genitalia. - The configuration of the male genitalia os the Araditis is generalty known, but rather tess the specific differetices, although

hirsute appendage at the base of the para mere. It is also characteristic to the

Fig. I. Male genitalia of A. serbicus HORVLTII, 1888 in superior view: IXT tergite IX, P paramere, ΙXS sternite IX, ΡΑ - parandrium, VIII se para tergite VIII

Acta Mologiea Aeademiae Scientiarum Hungaricae 22, I976

196쪽

Acta ZOOIogica Academiae Scientiarum Hungaricae 22, I976

197쪽

IX agrees with that of the Other features. In &ur Other SpecieS hrumeri, muricatus, riba uti, and accOrding tO KERZHNER and JACZEWSKI also hieroglyphicus), tergites IX are very similar and the Separation of these species is difficult. In the rest Of the species, tergites IX are considerably disserent, concurrent With the differetices of Other characters by Mhicli they can easilybe Separated from their congenerS. ThuS, among the Europe an memberS Ofthe betulae-group, the white ieeth are mis Sing Only from the legS and antennae Of pictus, and the media originates ne arer the radius than the cubitus Only On the membrarie of hemelytra of brens ei Figs. 36, 3T). The dorsat sideos anisotomus is unicoloured brOwn, Only iis antennae and membrane blackish and the posterior angle of the abdominal paratergites light. Finalty the semale abdomen os botulae is terminalty elongated, the marginS Os Parater-

sordidus HORV.

Aeta Mosegiea Academiae Scientiarum Bungarieae 22, 2976

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acter, namely that the Pronotat marginS WidenS rectangularly, is expressedrather On the males Whereas it is Often widely rounded in the se males, but thewidest section Os the pronotum is more anteriorad even in the lalter Ones than in the species characteriZed OtherwiSe.

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discedens HORV.

Aeta Mologica Aeademiae Scientiarum Hungaricae 22, I976

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Acta MoIogica Academiae Scientiarum Hungarieae 22, 1976