Machadocepheus excavatus

Mahunka, S., 1986, A survey of the family Carabodidae C. L. Koch, 1836 (Acari: Oribatida), Acta Zoologica Hungarica 32, pp. 73-135: 125-129

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Machadocepheus excavatus


Machadocepheus excavatus  Balogh, 1958

Balogh, 1958: 21.

Examined type series: Holotype and 62 paratypes. Ang. 4370-1: Angola: Riv. Tchimboma, affl. E. du Cuango-Muque , galerie forestière des sources, Alto Chicapa, 1.VIII. 1954. Station, Holotype and 30 paratypes: IRATGoogleMaps  , 30 paratypes ( 1107-PO-55): HNHMGoogleMaps  , 2 paratypes: MHNG.GoogleMaps  Other material 1 specimens: Ang. 16888: Angola, Environs de Dundo, foret de la Luachimo , 28. III. 1962. (Sanjinje et Barros Machado coll.).GoogleMaps 

Measurements. - Length: 396-648 µm, width: 214-402 µm. Prodorsum: Very strongly convex medially (Fig. 43), but concave medially in anterior view (Fig. 96). Lamellae with sharp cuspis, lamellar setae phylliform, with serrate margin. Rostral setae thin, arising comparatively near to each other, in a transversal line with the lamellar ones. Interlamellar setae also very thin, originating on the highest part of prodorsum. Bothridial cup very long (Fig. 97) sensillus uncate, its outer surface barbed. Prodorsal surface smooth, but some areolae marginally visible.

Notogaster: Very strongly convex medially (Fig. 42) in lateral view. Dorsosejugal suture very sharp, well visible. Anteromedian part of notogaster excavate, a weak median and a pair of lateral crests running to the convex part. Surface smooth anteriorly and areolate on the posterior part of the elevation. Fifteen pairs of very thin, filiform notogastral setae present.

Coxisternal region: Much longer longitudinally than the anogenital region, well chitinized (Fig. 44). Among the apodemes ap. 2, ap. sej. and ap. 3 well observable. Borders also visible and distinctly separate all epimeres from one another. Epimeral setal formula 3 —1—3— 3. Setae 1b, 3b, 3c and 4 a— 4c long, all other minute. Epimeral surface nearly smooth. Discidium well developed, its outer margin rounded.

Anogenital region: Genital and anal apertures originating very near to each other, distance between them much smaller than the length of genital opening. Ventral plate also well chitinized, some tecta or ribs present. Anogenital setal formula: 4 —1—2— 3. Genital setae very long, being longer than adanal setae. Anal setae short, an.2 originating on the anterior half of anal plates. Lyrifissure iad well visible. Standing very far from the anal aperture.

Legs: Lateral setae (l" G) of genu I and II asymmetrically phylliform.




Hungary, Budapest, Hungarian Natural History Museum


Switzerland, Geneva, Museum d'Histoire Naturelle