Neosuctobelba madegassica, Mahunka, 2011

Mahunka, S., 2011, New And Little Known Oribatid Mites From Madagascar (Acari: Oribatida) Ii., Acta Zoologica Academiae Scientiarum Hungaricae 57 (1), pp. 1-21 : 9-11

Neosuctobelba madegassica sp. n.

( Figs 17–20 )

Diagnosis: Rostral apex wide, rounded. Rostral incisure long, rostral tooth very large. Rostral rib narrow, rostral setae well curved anteriorly. Tectopedial field without borders medially, lamellar knob normally developed. Prebothridial rib, interbothridial field and bothridial lobe distinct. Sensillus very long, with short lanceolate head. Dorsosejugal scissure with two pairs of connected condyles. Nine pairs of comparatively short notogastral setae. Sternal field narrow, epimeral setae short. Posteroepimeral fossa absent. Genito-anal setal formula: 4–1–2–3.

Material examined: Holotype: Madagascar, Vohimana reserve , primary forest. 17. 04. 2008. Leg. CS. CSUZDI (Afr-996). Holotype (1813-HO-10) deposited in the HNHM.

Measurements: Length of body: 242 µm, width of body: 132 µm.

Prodorsum: Rostral part wide, margin undulating in dorsal view. Rostrum divided by a deep rostral incisure and distinct rostral tooth. Rostral elevation narrow, bearing long, simply curved and ciliate rostral setae. Tectopedial field opened medially, median borders absent. Antero-median part of lamellar knob sharply pointed. Interbothridial region well-sclerotised, with distinct ribs and arches. Bothridium well-developed, with large basal bothridial lobe, posterobothridial tubercles absent. Peduncle of sensillus very long, with short lanceolate head. This part bifurcate or sharply pointed, smooth.

Notogaster: Anterior margin of notogaster with two pairs of connected condyles, all condyles with distinct basal crests directed backwards. Nine pairs of comparatively short notogastral setae.

Lateral part of podosoma: Bifurcate head of sensillus well observable. Exobothridial and anterior margin of pedotecta II well granulated.

Ventral parts: Epimeral borders and apodemes normally developed, a wide sternal field present medially. Epimeres IV normal in shape, without posteroepimeral fossa. Epimeral setal formula 3–1–3–3, all short, setae 3c furcate. Anogenital setal formula 4–1–2–3. All setae nearly smooth and no essential difference among them.

Remarks: On the basis of the form and sculpture of prodorsum the new species is closest to Neosuctobelba xena MAHUNKA, 1978 . However, it is distinguished from the latter species by the form of lamellar knob and the sensillus and the much shorter notogastral setae.

Etymology: Named after its country of origin.

Figures

Figs 17–20. Neosuctobelba madegassica sp. n.: 17 = body in dorsal view, 18 = body in ventral view, 19 = podosoma in lateral view, 20 = basal part of prodorsum with prodorsal condyles