Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 71. (Budapest 1979)

Balogh, J. ; Mahunka, S.: New taxa in the system of the Oribatida (Acari)

Anogenital region (Fig. 9) : Inner margin of anal plate with 4 pairs of hairs immediately following one another, all equal in length; 1 pair of much shorter hairs far removed, on anterior part of anal plate. Material examined — Holotype (414-HO-78): Hungary, near Keszthely, Keszthely Hill, VIII. 1954, leg. I. LOKSA. — Holotype in the HNHM. Remarks — Only a few of the species belonging to the genus Steganacarus EWING, 1917, have neotrichial hairs on their notogaster. The new species is characterized also by the long, ciliate sensillus as well as the short erect hairs of the aspis. The new species is related to S. serratus FEIDER et Suciu, 1957, and S. clavigerus (BERLESE, 1923), but they differ by a different number of notogastral hairs and shorter hairs on the anal plate. Steganacarus perezinigoi nom. n. Steganacarus clavigerus (Berlese, 1923) sensu Perez-Inigó, 1968. In his faunal work on the Spanish Oribatids Perez-Inigó erroneously identified an Oribatid species with S. clavigerus BERLESE, 1923. We had opportunity to study a number of specimens of this latter species, both Hungarian exemplars and by courtessy of Dr. F. BERNINI also Italian ones. BERNINI published in one of his earlier papers (1971) data and photographic details of this species. To facilitate identification of the species, we submit total figures (Figs. 10, 11). The hairs of the species described and illustrated by PEREZ

—INIGÓ are much longer and thieker, and the hairs of the aspis show different proportions. We dedicate the species to DR. C. PEREZ-INIGÓ (Madrid). Phthiracarus feideri sp. n. (Figs. 12-14) Measurements — Length of aspis: 205-226 fx, length of notogaster: 360-369 [x, height of notogaster: 279-296 jx. Aspis (Fig. 13): Rostral hairs arising relatively near each other, shorter than those of interbothridial region. Inner pair of interbothridial hairs longer than outer ones, but despite their length inner hairs not reaching insertion point of rostral hair. Sensillus narrow, lanceolate, widest medially. Notogaster (Fig. 12): Notogastral hairs thin, curved, reclinate very variable in length. Hairs Ci, c, and c

3 arising on margin of collar, hair c

3 very short, at most one-third as long as c

2

. Among others hairs /?

4 shortest, hardly half as long as p

3

. Anogenital region (Fig. 14): Among the 3 pairs of real setae arising on anal plate 2 pairs of anal hairs longer than adanal hair. Material examined — Holotype (415-HO-78) : Hungary, Örvényes, valley of brook Péczeli, moss pad, 19. VI. 1954, leg. J. BALOGH; 3Paratypes: same locality. — Holotype and 2 Paratypes (415-PO-78) in the HNHM, 1 Paratype in the MHNG. Remarks — The new species is well characterizable by the position of hairs c, the direction of the notogastral hairs, and the shape of the sensillus. It is readily separable from the nearly related species (P. crenophylus WILLMANN, 1951 ; P. pallidas FEIDER et Suciu, 1957) by the great differences in length among the hairs Cj-c,-^.,. Dedicated to Prof. Z. FEIDER (Jassy, Roumania), who contributed considerably to the knowledge of Phthiracarid mites. Archiphthiracarus gen. n. Diagnosis : Body of phthiracaroid form. Anoadanal plates with 5 pairs of well developed hairs : 2 pairs situated on inner margin, 3 other pairs on inner surface of these plates. Type-species : Archiphthiracarus variabilis sp. n. Remarks — The genus Phthiracarus PERTY, 1841, has so far included species with 5 well developed anoadanal hairs as well as those with 2 reduced hairs (ad

u ad

2

) among the adanal ones. To ensure the homogeneity of taxa the two groups had to be separated.