Selenoribates divergens Pfingstl, 2015

Hugo-Coetzee K, Elizabeth A., K, Julia Baumann, K, Jan-Andries Neethling, Bardel-Kahr, Iris & PfingstlK, Tobias, 2022, Ontogeny of South African intertidal oribatid mite species (Acari, Oribatida, Ameronothroidea) and supplements to adult morphology., Acarologia 62 (3), pp. 721-753 : 730-732

Selenoribates divergens Pfingstl, 2015

Adult

Measurements: females (n=2): length 285-293 (289), width 157-175 (166), males (n=8): length

269-284 (279), width 162-174 (166); measurements in the original description of specimens from Egypt within range of South African specimens, mean length 273, mean width 164.

Integument ( Figure 5 ): brown in colour, antero-medial notogaster with lighter area, ventrally area posterior to genital plates darker than anterior to this area, genital and anal plates same colour as this posterior area, trochanters III and IV of legs darker than rest of legs; body densely granulate, larger granules irregularly sparsely distributed, denser bigger granules in acetabular region, legs with small dense granules.

Prodorsum ( Figures 5A, C ): rostrum with small lateral humps and rounded median apex; lamellar ridge absent; short line extending from bothridium anteriorly; ro (8-9), in, ex (3-4)

short, simple, le branched in two sub-equal parts (10-16); bothridium large cups opening laterally, with postbothridial tubercle; bs with medium long stem and clavate, spinose head (30-41).

Gnathosoma: same as in Pfingstl (2015c).

Notogaster ( Figures 5A, C ): oval in dorsal view; dorsosejugal furrow incomplete; tubercle present antero-laterally, posterior to bothridial tubercle; two x-shaped ridges antero-laterally, slightly anterior of seta c 1 ; 14 pairs of notogastral setae (c 1-2, da, dm, dp, la, lm, lp, h 1-3, p 1-3), branched basally, branches sub-equal in length (10-20), c 3 absent; five pairs of lyrifissures distinct: ia in humeral region, im anterior to la, ih lateral to lp and h 3, ip lateral to p 3 close to lateroventral border of notogastral plate, ips laterally to p 2 and p 3 ; gla lateral to la.

Lateral aspect ( Figure 5C ): PdI directed anteriorly, rounded; discidium pointed; laterosejugal furrow developed as a groove, extending from s 1 to bothridium; enantiophyses s (1, s 2) present as strong opposite triangular projections.

Ventral region ( Figure 5B ): median sternal cavity on epimeron I demarcated by a ridge; all setae smooth, simple; epimeral setation 1-0-1-1, seta 1b very long (33-38)> 3b (12-14)> 4b

(7-9); three pairs of genital (5-7), two pairs of anal and three pairs of adanal setae (6-9); genital plate (length 32-40, width 19-23) and anal plate (length 56-63, width 20-24) large; pre-anal organ triangularly rounded in ventral view; lyrifissure iad parallel and adjacent to anterior lateral border of anal plate.

Legs: see drawings in Pfingstl (2015c) ; monodactylous, long hook-like claws with proximoventral tooth; femora with ventral carinae; porose areas absent; solenidion φ 1 on Ti I long, but not necessarily curving backwards; for setation and solenidia see Table 2.

Figures

Figure 5 Selenoribates divergensPfingstl, 2015. Adult. A. dorsal view (legs omitted), B. ventral view (legs omitted), C. lateral view (legs and ventral setae omitted).