Anderemaeus chilensis Hammer, 1962,

Norton, Roy A. & Ermilov, Sergey G., 2019, Anderemaeus (Acari, Oribatida) - overview, three new species from South America and reassessment of Anderemaeidae supported by ontogeny, Zootaxa 4647 (1), pp. 241-289: 268

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Anderemaeus chilensis Hammer, 1962


Anderemaeus chilensis Hammer, 1962 

( Figs 20–22View FIGURE 20View FIGURE 21View FIGURE 22)

Anderemaeus  species with adult size 670–786 × 407–504. Cerotegument mostly thin, encrusting, with adherent organic and mineral particles ( Figs 20FView FIGURE 20, 22JView FIGURE 22), adherent dirt rarely in large masses ( Fig. 22KView FIGURE 22); where distinct, excrescences granular ( Fig. 22DView FIGURE 22) to phallus-like, covered with minute dust-like particles ( Fig. 22 E, G, HView FIGURE 22). Rostrum with terminal mucro and prominent rostral bulge ( Fig. 20FView FIGURE 20). Lamella simple in form, broadest in middle third, without lateral tooth but with distinct tubular cusp and long prolamella; main part of lamellar pair moderately converging, mutual distance of setal pair le slightly greater than that of ro, but prolamellae ( Fig. 20D, FView FIGURE 20) converging strongly, nearly touching at tips. With distinct transverse prelamellar ridge but without laterorostral carina ( Fig. 20EView FIGURE 20). Seta in long, inserted on small tubercle well anterior to notogastral margin; with additional larger, subtriangular tubercle midway between each in and margin ( Fig. 22FView FIGURE 22). Bothridial seta long, baculiform, slightly tapered to slightly expanded distally ( Fig. 20IView FIGURE 20), with minute, inconspicuous barbs. Humeral process well developed. Notogastral setae relatively large (lm ~100), mostly (except c) erect, isodiametric to weakly clavate ( Fig. 20HView FIGURE 20), distinctly and densely barbed. Aggenital enantiophysis (e4) usually with small tooth at medial corner of posterior tubercle ( Fig 20JView FIGURE 20); enantiophysis e3 absent; tubercle of seta 3b expressed as low mound extending across sejugal groove, 3c without tubercle. Anterior border of subcapitular mentum strongly rebordered by unusually thickened edge ( Fig. 20GView FIGURE 20). Legs with tarsi longer than respective tibia on I, II but similar in length on III, IV; genua I, II longer than III, IV ( Fig. 22A, BView FIGURE 22). Femora III, IV respectively 1.4, 1.6 x longer than wide; each with distinct ventral blade, not produced as tooth or spine. Trochanters III and IV with large dorsodistal spine; III with ventrodistal keel and separate small, sharp proximal tooth; IV with larger blade, extending entire ventral length and produced proximally as tooth. Solenidion σ of genu I subflagellate, distinctly longer than segment; φ of tibiae II–IV subflagellate, equal or only slightly less than segment length. Preanal organ distinctly expanded internally ( Fig. 21CView FIGURE 21), often almost T-shaped.