Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 80. (Budapest 1988)

Mahunka, S.: The Oribatid fauna of Tanzania (Acari), II

Sensillus very long (90 um), fusiform, its peduncle and its head also finely ciliate. Exobothridial surface granulate (Fig. 35). Notogaster: Very high, nearly semicircular in lateral view. Three pairs of long and six pairs of short setae present as in the type-species of this genus. Setae la the longest of all (ca 150 jim) lp much shorter. All three long setae dilated on their distal end (Fig. 33). Coxisternal region: Surface of pedotecta 1 and a small area in front of it pustulate. Apodemes and epimeral borders well developed, but longitudinal sternal one narrow, much weaklier than transversal ones. Bo. sej. the strongest of all, some transversal thickening also observable on it (Fig. 34). Epimeral surface ornamented by an irregular, polygonal reticulation. Epimeral setae thin, setae lb and lc arising near to each other. Discidium weakly developed, long, legs IV originating very far from legs III, therefore, epimeres III-IV very large, bo. 4 also well arched posteriorly. Anogenital region: Six pairs of short genital setae present. Aggenital setae much longer than adanal ones. Lyrifissures iad in apoanal position. Type material: Holotype (1280-HO-88): No. 105; 2 paratypes: from the same sample. Holotype and 1 paratype (1280-PO-88) deposited in the HNHM, 1 paratype: MHNG. Remarks : The new species is the third* Tectoppia WALLWORK, 1961 species, all known from Africa. On the basis of the shorter notogastral setae the new species stands near to the type-species: Tectoppia nigricans WALLWORK, 1961 from Ghana. However, it is distinguished from the latter by the ratio of the prodorsal setae, the sculpture of the notogaster, the notogastral setae dilated at the end and by the from of the sensillus. Machadobclba tanzica sp. n. (Figs 37-41) Measurements — Length: 418-457 urn, width: 216-240 urn. Prodorsum: Rostrum elongated, nasiform. Costulae characteristically running forwards, their distal end arched outwards, their basal part dilated medially and forming a flat, large tubercle also in the interbothridial region (Fig. 41). Rostral, lamellar and interlamellar setae short, thin and simple; no essential difference among them (Fig. 35). Exobothridial setae arising far anteriorly from the bothridium. Some irregular spots compose polygonate fields along the costulae on each side. Sensillus long, setiform, strongly curved backwards, distinctly ciliate unilaterally. Notogaster: Sejugal region with one pair of wider median and one pair of smaller, narrower tubercles. From the median one a longer inner and a shorter outer lath run posteriorly. Ten pairs of short and simple notogastral setae present. Lateral part of podosoma: Pedotecta 1 very large, rounded anteriorly; posterior part with some large tubercles (Fig. 39). Pedotecta 2-3 small and spiniform. Discidium also well developed, it consists of two parts. Coxisternal region: Apodemes and epimeral borders well developed, they compose a characteristic framework (Fig. 38). Epimeres 1 much larger than epimeres 2. Some irregular spots visible on the epimeral surface. All epimeral setae short and simple. Anogenital region: Anogenital setal formula: 6-1-2-3. All setae short and simple. Setae ad

3 arising far laterally from the anal aperture, ad

x in postanal position. Ventral plate framed posteriorly by a strong chitinous lath. Secondary sexual dimorphism present: by the male near to the insertion of seta ad

3 on each side a well observable area porosa present. The same is absent in the female. Legs: Strong longitudinal crests present on all femora, sometimes they are connected with each other by transversal crests, so a polygonal formation also observable on them. Surface of the other joints smooth. Type material: Holotype (1281-HO-88)

: No. 103; 1 paratype: from the same sample. Holotype deposited in the HNHM and paratype in the MHNG. The known species of the genus Machadobeiba BALOGH, 1958 may be divided into two groups on the basis of the length of the costula. The new species belongs to the group which is characterized by the short costula. Among the species belonging in this relationship * Tectoppia carinae MAHUNKA, 1973 = Tectoppiella carinae (MAHUNKA, 1973) comb. n. Annls hist.-nat. Mus. natn. hung., 80, 1988