Hermanniella spiniseta, Mahunka & Mahunka-Papp, 2007

Mahunka, S. & Mahunka-Papp, L., 2007, Taxonomical And Faunistical Studies On Oribatids Collected In Kenya (Acari: Oribatida) I., Acta Zoologica Academiae Scientiarum Hungaricae 53 (1), pp. 51-74 : 57-59

Hermanniella spiniseta sp. n.

( Figs 10–13 )

Diagnosis – Prodorsum with some crests. Sensillus bacilliform, comparatively long. All prodorsal setae – except setae ex – spiniform, interlamellar setae much longer than the sensilli. All notogastral setae – except the minute c 3 – spiniform, in the males bacilliform. Setae e 1 much shorter than the others. Notogastral surface ornamented by alveoli. Epimeral setae spiniform, their formula: 3–1–3–3. Genitoanal setal formula: 7–1–2–3. Legs tridactylous.

Material examined: Holotype: Kenya, Muguga: 20.11.2004. Leg. CS . CSUZDI, (Afr. 978) . 7 paratypes from the same sample. Holotype (1719-HO-2006) and 5 paratypes (1719-PO-2006): HNHM , 2 Paratypes: MHNG .

Measurements: Length of body: 623–694 µm, width of body: 429–485 µm.

Prodorsum: Strongly concave in lateral view ( Fig. 11 ), betwenn the rostral and lamellar setae a distinct hollow observable. Dorsal surface ornamented by crests and irregular alveoli. A pair also stronger crests present between the interlamellar setae, and irregular crest present around the alveoli of the interlamellar setae. Prodorsal setae spiniform, rostral, lamellar and interlamellar setae sharply pointed. Exobothridial ones minute, arising on the lateral surface. Interlamellar setae much longer than the bacilliform sensilli, the latter ones finely roughened, the setae shortly pilose or barbed ( Fig. 10 ).

Notogaster: Surface ornamented by roundish alveoli of various dimensions ( Fig. 13 ). All setae – except e 1 – nearly equal in length, spiniform, weakly pilose. Setae e 1 mch thicker but shorter than the others.

Lateral part of podosoma: Ratio of prodorsal setae as shown in Fig. 11 . Exobothridial setae arising near to the bothridia on the prodorsal surface.

Ventral regions: Infracapitulum and apodemes are typical for the genus. All epimeral setae spiniform, slightly pilose. Ventral plate ornamented by irregular ribs, anal plates alveolate. Genital setae also spiniform, 7 pairs aranged in two rows, 4 pairs medially, three pairs laterally ( Fig. 12 ). Anal and adanal setae varying in length, an 1 much longer than an 2 and ad 1 much longer than ad 2, ad 3 the longest of all. Lyrifissures iad located transversally, near to the anterior corner of the anal aperture.

Legs: Typical for the genus.

Remarks – Both new species belong to the “ congoensis ” group (see BALOGH 1962). The interlamellar setae are much longer in the new species than in H. humilis BALOGH, 1962 . The notogastral setae in the latter species are strongly dilated, while the others are not. The notogastral setae of H. congoensis are bacilliform, blunt at tip, while those of spiniseta are spiniform. The latter species clearly differs from congoensis in the size of the alveoli, furthermore, its notogastral setae are shorter than those of congoensis .

Etymology – Named after the form of the notogastral setae.

Figures

Figs 10–13. Hermanniella spiniseta sp. n. – 10 = body in dorsal view, 11 = prodorsum in lateral view, 12 = anogenital region, 13: sculpture of notogaster