Anderemaeus hammerae Mahunka, 1980,

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: 272

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Anderemaeus hammerae Mahunka, 1980


Anderemaeus hammerae Mahunka, 1980 

( Figs 23View FIGURE 23, 24View FIGURE 24)

Anderemaeus  species with adult size 580–680 × 383–436. Cerotegument, dense and often slightly pigmented, excrescences mostly polyp-like, with several tapered arms, or bullet-shaped ( Fig. 24View FIGURE 24 D–G, I); little or no adherent particulate debris. Rostrum with terminal mucro and moderate rostral bulge. Foveation present between lamellae in anterior half of prodorsum. Lamella simple, with distinct tubular cusp and short prolamella; latter pair converging more strongly than lamellae. Mutual distance of setal pair le slightly greater than that of ro. Prelamellar ridge weakly developed or absent. Tutorium extended unusually far anteriorly onto rostrum as carina ( Fig. 23FView FIGURE 23). Seta in long (~120), baculiform, nearly smooth, with extremely minute, inconspicuous barbs ( Fig. 23EView FIGURE 23); each seta inserted on strongly-projecting tubercle, about its width removed from notogastral margin. Bothridium ( Figs 23GView FIGURE 23, 24CView FIGURE 24) with series of conspicuous, rounded tubercles posteriorly; bothridial seta (75–80) much shorter than in, virtually smooth, with distinct pyriform head. Notogaster covered with shallow foveolae ( Fig. 23AView FIGURE 23); humeral process strongly developed, with oblique dorsal carina ( Fig. 24CView FIGURE 24). Notogastral setae relatively long (lm ~75–80), mostly (except c) erect, heavily barbed, isodiametric or acicular ( Fig. 24FView FIGURE 24). Enantiophysis e3 present ( Fig. 24HView FIGURE 24), posterior tubercle extended as ridge across epimere IV to merge with e4; tubercle of seta 3b distinct, with opposing small tubercle across sejugal groove to form ventrosejugal enantiophysis (ev). Legs ( Fig. 24A, BView FIGURE 24) all with tarsus slightly longer than respective tibia; genua I, II longer than III, IV. Femora III, IV about 1.7 times longer than broad, each with ventral keel, enlarging to narrow blade distally, not produced as tooth or spine. Trochanter III with modest proximal (anterior pointing) spine ( Fig. 24IView FIGURE 24) and dorsodistal tooth; IV only with dorsodistal 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 ( Fig. 23BView FIGURE 23, insert) slightly expanded internally, often vase-like.