Fortuynia elamellata micromorpha Marshall & Pugh, 2002

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 : 724

Fortuynia elamellata micromorpha Marshall & Pugh, 2002

Adults

Measurements: females (n=2) length 399-414 (407), width 202-218 (210), males (n=5) length

392-408 (399), width 201-220 (211); holotype (female) length 397, width 190, paratypes

(females) (n=3) length 398-408 (403), width 202-209 (206); body sizes in range of the specimens of the original description, females (n=7) length 380-404, width 206-215.

Integument ( Figures 1 and 2 ): brown to dark brown, genital plate slightly darker, legs with slight darkening of proximal part of tarsi, distal part of tibiae, distal two thirds of femora and entire genua and trochanters; body surface finely punctate, lighter areas around insertions of notogastral setae; granulate in acetabular regions; chelicerae punctate.

Prodorsum ( Figures 1A, C ): rostrum broadly rounded, slightly flattened apex in dorsal view; no lamellar ridges; ro (35-41), le (26-35), smooth, in, ex represented by alveoli; bs (30-36)

smooth, medially incurving, with clavate head; bothridium cup-like; transverse line developed posterior to insertion of alveoli of ro.

Gnathosoma ( Figure 2E ): Setae a, m, h thin, smooth; pedipalp setation 0-2-1-3-9(+ω), ω on tarsus erect, not associated with eupathidium acm ; femur with large porose area; chelicera with teeth, smooth seta chb shorter than barbed seta cha.

Notogaster ( Figures 1A, C ): elongate oval in dorsal view; lenticulus anteriorly with irregular border; 14 pairs of smooth, setiform notogastral setae, relatively long, h 2 longest, c 2, p 3 shortest

(c 1 60-73, c 2 32-40, da, dm, dp 47-67, la, lm, lp 43-70, h 1 35-50, h 2 81-104, h 3 50-67, p 1 58-85,

p 2 34-53, p 3 30-37), c 3 absent; five pairs of distinct lyrifissures present, ia postero-lateral to c 2,

im between lm and lp, ih far lateral to h 3, ip and ips lateral to p 2 ; gla lateral to im.

Lateral aspect ( Figure 1C ): PdI round, small; cuticular canals of van der Hammen’s organ present, canal ce very short, reaching posterior border of bothridium, canal ci absent.

Ventral ( Figures 1B, C ): all epimeral setae setiform, smooth, setation 3-1-3-2, seta 1b

(22-32) slightly longer than others (13-23); discidium rounded; five pairs of genital g (1 19-23,

g 2-5 16-19), one pair of aggenital (ag 15-19), two pairs of anal (an 1 26-35, an 2 20-31) and three pairs of adanal ad (1 40-54, ad 2 27-36, ad 3 22-27) setae thin, smooth; lyrifissure iad medially to ad 2, slightly obliquely orientated; anal plates slightly triangular (length 81-86, width 29-33), preanal organ triangular; genital plates trapezoid, large (length 65-80, width 38-49, no distinct difference in size between males and females but plates in females by trend slightly larger).

Legs ( Figures 2 A-D): monodactylous, long hook-like claws with small teeth dorsally;

porose areas pa on Fe I-IV and Tr III, IV distinct; tarsi with proximal lyrifissure; famulus short, straight, weakly blunt-ended; all solenidia long, setiform; for leg setation and solenidia see Table 1.

Figures

Figure 1 Fortuynia elamellata micromorpha Marshall & Pugh, 2002, Sheffield Beach. Adult. A. dorsal view (legs omitted), B. ventral view (only trochanter IV shown), C. lateral view (legs and epimeral setae omitted).

Figure 2 Fortuynia elamellata micromorpha Marshall & Pugh, 2002, Sheffield Beach. Adult legs A. leg I, right, paraxial view, B. leg II, right, paraxial view, C. leg III, left, paraxial view, D. leg IV, left, antiaxial view, E. chelicera.