The original description of Rebutia (Aylostera) albiareolata was published in Kakteen und andere Sukkulenten 28(4): 76, 1977, the journal of the Deutsche Kakteen-Gesellschaft, by Friedrich Ritter.

Here is the text in Latin as published, but you should look up the original description for more details. The English translation below is my own.

Rebutia albiareolata Ritter spec. nov.

Solitaria, globosa, clare viridis, 3—5 cm crassa, radice rapacea; costae dissolutae tuberculis 2-2,5 mm altis; areolae oblongae, 1-2 mm diam., 3—4 mm inter se remotae, lana alba copiosa obtectae; spinae asperae, marginales 10-14, albae, 6-10 mm longae, centrales complures, robustiores, ferrugineae, 8—15 mm longae.

Flores 3—4 cm longi ; ovarium lana alba et saetis albis instructum;  stylus ca. 6 mm cum tubo coalitus; sulcus nectarifer 3 mm longus; tubus floralis 3-5 mm longus, glaber; filamenta alba, biseriata; stylus et 4 stigmata flaveola; petala 17-20 mm longa, 4-6 mm lata, fere linearia, interne coccinea, externe carminea; semina 1,2 mm longa, tenuiter tuberculata; habitat Padcaya, Prov. Arce, Bolivia.

Sammelnummer FR 761

English translation:

Rebutia albiareolata Ritter Spec. nov.

Solitary, spherical, bright green, 3-5 cm thick, tap root; the ribs broken by tubercles 2-2,5 mm high; areoles oblong, 1-2 mm in diam., 3-4 mm apart, covered in white wool; spines coarse, 10 – 14 marginals white, 6-10 mm long, many strong reddish-brown centrals, 8-15 mm long.

Flowers 3-4 cm long; ovary with white wool, arranged with white bristles; style ca. 6 mm in the tube; nectary groove 3 mm long; the floral tube 3-5 mm long, slender, glabrous; anthers white, in 2 rows, style and 4 stigmata yellowish; petals, 17-20 mm long, 4-6 mm wide, almost linear, internally scarlet, externally carmine; seeds 1.2 mm long with thin bumps; habitat Padcaya, Prov. Arce, Bolivia.

Collected as 761 Fr.