Dr. Murai Éva szerk.: Parasitologia Hungarica 22. (Budapest, 1989)

New mite species of the cohort Tarsonemina (Acari: Acarophenicidae and Pygmephoridae) Dr. Sándor MAHUNKA and Dr. Alex FAIN Zoological Department of the Hungarian Natural History Museum, Budapest, Hungary — Institut Royal des Sciences Naturelles de Belgique, Bruxelles, Belgium "New mite species of the cohort Tarsonemina (Acari: Acarophenicidae and Pygmephoridae)" -Mahunka, S. and Fain, A. - Parasit. hung., 22: 125-136. 1989. ABSTRACT. Four new species and a new genus (Pygmephoroides gen, nov.) of Tarsonemina are described from Central Africa and South America. KEY WORDS: Parasitic Acari, Tarsonemina, Acarophenax lukoschusi sp. n. (Acarophenacidae), Pygmephoroides margaritatus gen.n., sp.n. Sicilipes crossi sp. n., Sicilipes lindquisti sp.n. (Pygmephoridae), systematic, morphology. The mite collections in Bruxelles, Gembloux and Tervuren contain some slides with mites belonging to the cohort Tarsonemina and to the families Acarophenacidae and Pygmephoridae. We have examined some of them and in the following we give descriptions of four species, all new for science. The establishment of a new genus (

Pygmephoroides gen, nov.) was also necessary. The species which are described herein were collected by Dr. J. LECLERCQ, Facultés Universitaires de Gembloux, by Mr. F. PUYLAERT, Musé Royal de l'Afrique Centrale, Tervuren, as well as by A. FAIN, Institut Royal des Sciences Naturelles de Belgiaue, Bruxelles. ACAROPHENACIDAE Acarophenaxlukoschusi sp. n. Measurements. - Length: 168-193 urn, width: 128-149 urn. Dorsal side (Fig. 1): Body comparatively wide, rounded. Stigmae opening anteriorly, peritremes well visible. All four pairs of dorsal setae setiform, blunt at tip and finely roughened. Setae scj and sc^ nearly equal in length, setae v-^ much longer than Vg, but both pairs much shorter than the preceding two pairs. All setae ofthe opisthosomatal segments strong, blunt at tip and roughened (or finely ciliate) like the prodorsal ones. Segment Ps bearing only one pair of setae. Ratio of the opisthosomatal setae: psj < h2 < hj < fj < ej ï dj s d„^ c^. Only two pairs of couples (ia, in) were observable.