New faunistical and taxonomic data on oribatid mites (Acari: Oribatida) of Taiwan Author Ermilov, Sergey G. Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, Tyumen, Russia. Author Liao, Jhih-Rong Department of Entomology, National Taiwan University, Taipei, Taiwan. & Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, Tyumen, Russia. text Acarologia 2021 2021-04-29 61 2 297 320 http://dx.doi.org/10.24349/acarologia/20214432 journal article 10.24349/acarologia/20214432 2107-7207 5392448 Jacotella puyuma n. sp. Zoobank: 68246793-3547-4AC3-87E7-EB9938BE528F (Figures 5–9) Diagnosis — Adult. Body size: 365–415 × 182–215. Body surface microsculptured, covered by tubercular and bacillar cerotegument and band-like structures between them, forming microreticulate ornament. Anterior prodorsal part with large depression. Bothridial seta long, with elongate flattened head covered by dense small scales. Anterior notogastral part with transverse ridge, centrodorsal notogastral part with two longitudinal ridges, each with two lateral transverse branches, posteriorly fused. Four pairs of setiform, roughened setae developed, h 1 long, p 1 of medium length, p 2 and p 3 short; h 1 and p 1 inserting on strong tubercles. All epimeral and anogenital setae short, setiform, roughened. Leg femora with saccule. Tritonymph. Bothridial seta and gastronotic seta h 1 long, with elongate flattened head covered by dense small scales. Gastronotic seta c 3 very long, setiform, densely barbed; other setae comparatively short, narrowly phylliform.

Figure 5 Jacotella puyuma n. sp. , adult: a – dorsal view (legs omitted); b – ventral view (gnathosoma and legs omitted). Scale bar 50 μm.
Description of adult — Measurements – Body length 398 (holotype, male), 365–415 (11
paratypes, all males); body width 199 (holotype), 182–215 (11 paratypes).
Integument (Figs 7a-h, 8a-d) – Body color brown. Body and legs covered by thick
cerotegumental layer represented by tubercular and bacillar structures (length up to 2) and
band-like structures between them, forming microreticulate ornament. Body surface densely
microtuberculate. Setae usually with cerotegument.
Prodorsum (Figs 5a, 7a, 7d) – Rostrum rounded. Anterior prodorsal part with large
depression. Basal prodorsal part with inverse V-shaped ridge structure. Enantiophysis

Figure 6 Jacotella puyuma n. sp. , adult: a – subcapitulum, ventral view; b – palp, left, paraxial view; c – chelicera, right, antiaxial view; d – leg I, without trochanter, right, antiaxial view; e – leg II, without trochanter and tarsus, right, ventroantiaxial view; f – leg III, without tarsus, left, ventroantiaxial view; g – leg IV, left, antiaxial view. Scale bar 20 μm (a, c-g), 10 μm (b). Figure 7 Jacotella puyuma n. sp. , adult, SEM micrographs (a-f) and microscope images (g, h): a – dorsal view; b – ventral view; c – lateral view; d – dorsoanterior view; e – posterior view; f – tuberculate notogastral cerotegument; g – microtuberculate notogastral integument; h – microtuberculate subcapitular integument. Scale bar 100 μm (a-e), 5 μm (f); images without scale bar.

Figure 8 Jacotella puyuma n. sp. , adult, SEM micrograph (b) and microscope images (a, c-e): a – microtuberculate notogastral integument; b – claws of leg III; c – bacillar and tuberculate cerotegument in mediobasal part of leg tarsus III; d – articulation between genu and femur of leg IV; e – saccule of leg femur IV. Scale bar 5 μm (b); images without scale bar.
absent. Rostral (41–45) and lamellar (32–36) setae setiform, roughened. Interlamellar seta (6)
spiniform, smooth. Bothridial seta (86–90) with long stalk and elongate flattened head covered
by dense small scales. Exobothridial seta (16–20) setiform, roughened.
Notogaster (Figs 5a, 5b, 7a-e, 8a) – Exuvial scalps always absent. Humeral process
tubercle-like. Anterior notogastral part with transverse ridge. Centrodorsal notogastral part
with two longitudinal ridges, each with two lateral transverse branches, posteriorly fused.
Posterior notogastral part with short longitudinal ridge. Four pairs of setiform, roughened setae
( h 1, 53–57; p 1, 32–36; p 2, p 3, 16–20); h 1 and p 1 inserting on strong tubercles. Opisthonotal gland opening and all lyrifissures distinct.
Gnathosoma (Figs 6a-c, 7b) – Subcapitulum size: 77–86 × 57–65. All subcapitular (14–16)

Table 2 Leg setation and solenidia of adult and tritonymph Jacotella puyuma n. sp.

Leg	Tr	Fe	Ge	Ti	Ta
I	v’	d, (l), bv”, v”	d, (l), v’, σ	(l), (v), d φ1, φ2	(ft), (tc), (it), (p), (u), (a), s, (pv), v’*, (pl), l”*, ɛ, ω1, ω2
II	v’	d, (l), bv”, v”	d, (l), v’, σ	d, (l), (v), φ	(ft), (tc), (it), (p), (u), (a), s, (pv), l”*, ω1, ω2
III	l’, v’	d, l’, ev’	d, l’, v’, σ	d, l’, (v), φ	(ft), (tc), (it), (p), (u), (a), s, (pv)
IV	v’	d, ev’	d, l’, v’	d, l’, (v), φ	ft”, (tc), (p), (u), (a), s, (pv)

See Table 1 for explanations. * – Setae l” on tarsi I and II and seta v’ on tarsus I absent in tritonymph (versus present in adult). and adoral (8) setiform, slightly barbed. Palp (45–49) with setation 0-2-1-3-9(+ω). Postpalpal seta (2) spiniform, smooth. Chelicera (73–77) with two setiform, barbed setae ( cha , 24–26; chb , 16–18). Trägårdh’s organ not observed. Epimeral and lateral podosomal regions (Figs 5b, 7b, 7c) – Epimeral setal formula 3-1-3-3. All epimeral setae ( 4c , 16–20; others 10–12) setiform, roughened. Tubercles of parastigmatic enantiophysis not observed. Discidium elongate triangular. Anogenital region (Figs 5b, 7b, 7c, 7e) – Genital, aggenital, anal (all 10–12), and adanal (16–20) setae setiform, roughened. Adanal lyrifissure not observed. Legs ( Figs 6 d-g, 7c, 8b-e) – Heterotridactylous; claws smooth. Tibia I with dorsodistal cylindrical apophysis bearing two solenidia and seta. All femora with saccule (instead porose area). Formulas of leg setation and solenidia: I (1-5-4-5-20) [1-2-2], II (1-5-4-5-16) [1-1-2], III (2-3-3-4-15) [1-1-0], IV (1-2-3-4-12) [0-1-0]; homology of setae and solenidia indicated in Table 2 . Famulus on tarsus I sunken in cup-like cuticular deepening. Solenidion 1 φon tibia I setiform, other solenidia thickened, rounded apically. Description of tritonymph — Measurements – Body length: 348 (one tritonymph); gastronotum width: 199 (one tritonymph). Integument – Body color grey yellowish. Body and legs covered by thick cerotegumental layer represented by tubercular and bacillar structures (length up to 2). Gastronotum (except dorsocentral part), ventral side of body and lateral side of prodorsum folded. Setae with or without cerotegument. Exuviae with reticulate ornamentation. Prodorsum (Fig. 9a) – About 1/2 length of gastronotum. Rostrum rounded. Dorsal part with one pair of longitudinal, slightly divergent carinae. Enantiophysis not developed. Rostral (41) and lamellar (36) setae setiform, roughened. Interlamellar seta (4) spiniform, smooth. Bothridial seta (102) with long stalk and elongate flattened head covered by dense small scales. Exobothridial seta (10) setiform, roughened. Gastronotic region (Fig. 9a) – Gastronotum carrying scalps of previous instars, with four strong posterior apophyses bearing setae h 1 and p 1 . Ten pairs of gastronotic setae present: seta h 1 (102) with long stalk and elongate flattened head covered by dense small scales; seta c 3 (131) setiform, densely barbed; other setae c 1 (, 16; others 20–24) narrowly phylliform (except c 2 , p 2 and p 3 broken). Opisthonotal gland opening and all cupules slightly visible. Larval exuvium with nine, proto- and deutonymphal exuviae with seven pairs of setae, all narrowly phylliform (except broken c 2 and dp in larva and broken c 2 and h 1 in proto- and deutonymph). Gnathosoma (Fig. 9b) – Mostly similar to adult. Subcapitulum size: 73 × 53. Subcapitular (12) and adoral (6) setae setiform, roughened. Palp (65) with setation 0-2-1-3-9(+ω). Postpalpal seta (2) spiniform, smooth. Chelicera (69) with two setiform, barbed setae cha (, 24; chb , 16). Epimeral and lateral podosomal regions (Fig. 9b) – Epimeral setal formula 3-1-3-3. All epimeral setae (12–16) setiform, roughened. Anogenital region (Fig. 9b) – Genital, aggenital, anal, and adanal (all 10–12) setae setiform, roughened. Adanal cupule slightly visible. Legs – Mostly similar to adult. Single claw of each leg strong, smooth. Saccule and porose area on segments not observed. Formulas of leg setation and solenidia: I (1-5-4-5-18) [1-2-2],