Flagellozetes (Cosmogalumna) sanqingi Ermilov, 2020

Ermilov, S. G. & Liao, J. - R., 2020, A new species of the genus Flagellozetes Balogh, 1970 (Acari: Oribatida: Galumnidae) from Taiwan, Far Eastern Entomologist 419, pp. 9-17 : 10-16

Flagellozetes (Cosmogalumna) sanqingi Ermilov , sp. n.

http://zoobank.org/NomenclaturalActs/ C885B79C-E220-4D01-B9E3-B0840EA01617

Figs 1–22

TYPE MATERIAL. Holotype – ♂; Taiwan: Yilan County, Dongshan Township ,

Meihua Lake, 24º38.516'N, 121º44.083'E, soil under fallen leave in forest, 10.III 2018, leg.

J.- R. Liao & H.C. Lee ( NTU) . Paratypes: the same label as holotype, 12♂, 4♀ (two paratypes are deposited in the collection of the SMG; 14 paratypes are deposited in the collection of the TSUMZ) . All specimens are preserved in ethanol with a drop of glycerol.

DIAGNOSIS. Body size: 315–332 × 232–249. Prodorsum densely tuberculate. Notogaster and anogenital region completely reticulate, with small cells. Pteromorph striate mediobasally and with short ridges distally. Genital plate with strong longitudinal ridges.

Anal plate reticulate. Rostral and lamellar setae setiform, slightly barbed; ro longest, le inserted medial to L. Interlamellar seta minute. Bothridial seta long, clavate, smooth.

Notogaster with four pairs of rounded porose areas. Median pore and oval postanal porose area present. Epimeral and anogenital setae short, setiform, smooth. Circumpedal carina long, reaching of anterior margin of ventral plate.

2 – ventral view (gnathosoma and legs not shown); 3 – lateral view (pteromorph, gnathosoma and legs not shown); 4 – posterior view. Scale bar 50 μm.

tulum, ventral view; 6 – palp, left, paraxial view; 7 – chelicera, right, antiaxial view; 8 – leg

I, without trochanter, right, antiaxial view; 9 – leg II, without trochanter and tarsus, right,

ventroantiaxial view; 10 – leg III, without trochanter, right, paraxial view; 11 – leg IV, left,

antiaxial view. Scale bar 20 μm.

DESCRIPTION. Measurements. Body length 315 (holotype), 315–332 (16 paratypes);

body width 232 (holotype), 232–249 (16 paratypes).

Integument ( Figs 1–5, 8, 9, 11–14 , 16–22 ). Body color brown. Body surface sparsely microporose and partially microtuberculate (visible under high magnification in dissected specimens). Prodorsum densely tuberculate (diameter tubercle up to 2). Basal part of lamellar line with several longitudinal stria. Notogaster completely reticulate, cells comparatively small. Marginal zone of notogaster densely tuberculate (diameter tubercle up to 2). Pteromorph striate mediobasally and with short ridges distally. Subcapitular mentum with dense short ridges and stria and with several long transverse stria basally. Anterior part of ventral plate slightly tuberculate, lateral part of all epimeres longitudinally striate and rugose. Broad transverse tuberculate band located anterior to genital aperture. Anogenital region completely reticulate, cells comparatively small. Genital plate with strong longitudinal ridges and some images: 12 – dorsal view; 13 – ventral view; 14 – lateral view.

lateral tubercles (diameter tubercle up to 4). Anal plate reticulate, many cells distinctly elongate. Antiaxial side of all leg femora and trochanters III, IV with tubercles and short ridges.

Prodorsum ( Figs 1, 3 , 12, 14–16 ). Rostrum rounded. Lamellar and sublamellar lines thin,

parallel, curving backwards. Lateral structures N and ridges E and T poorly developed.

Rostral (32–41) and lamellar (12–14) setae setiform, slightly barbed; le inserted medial to L.

Interlamellar seta (2–4) setiform, thin, smooth. Bothridial seta (53–61) clavate, smooth, with images: 15 – part of prodorsum, lateral view; 16 – part of prodorsum, dorsal view; 17 –

ornamentation of notogaster; 18 – ornamentation of notogaster and sculpturing of basal part of pteromorph; 19 – sculpturing of pteromorph; 20 – ornamentation and sculpturing of epimeral and anogenital regions; 21 – sculpturing of subcapitular mentum; 22 – ornamentation of anal plate.

long stalk and short, rounded distally head. Exobothridial seta absent. Dorsosejugal porose area (12–16 × 4) narrowly oval, transversely oriented, posterolateral to in. Dorsophragma distinctly elongate longitudinally.

Notogaster ( Figs 1, 3, 4 , 12, 14 , 17, 18 ). Dorsosejugal suture complete, convex medially.

With 10 pairs of microsetae (1) and four pairs of rounded porose areas (Aa, 8–12; A1, A2, A3,

4–8). Porose area Aa located close to pteromorphal hinge, anterior to la. Median pore present in female and male, located below virtual line connected A2. Opisthonotal gland opening and all lyrifissures distinct; gla located anterolateral and close to A2, im between lm and lp (equal distanced from them), ip between p 1 and p 2 (closer to p 1), ih and ips close to each other between p 2 and p 3.

Gnathosoma ( Figs 5–7 ). Subcapitulum size: 77–82 × 65–69. Three pairs of subcapitular setae setiform, m (4–6) smooth, a (16–20) and h (12–14) roughened; a thickest, m thinnest.

Two pairs of adoral setae (8) setiform, barbed. Length of palp: 61–65. Postpalpal seta (2)

spiniform. Length of chelicera: 92–98. Two cheliceral setae (cha, 30–32; chb, 22–24) setiform, barbed. Trägårdh’s organ long, elongate triangular.

Epimeral and lateral podosomal regions ( Figs 2, 3 , 13, 14 , 20 ). Anterior tectum of epimere I smooth. Epimeral setal formula: 1-0-1-1. Three pairs of epimeral setae (3b, 8–10;

1a, 4a, 4) setiform, thin, smooth. Pedotectum II rounded distally in ventral aspect. Discidium triangular. Circumpedal carinae long, thin, reaching of anterior margin of ventral plate.

Anogenital region ( Figs 2–4 , 13, 14 , 20 ). Six pairs of genital, one pair of aggenital, two pairs of anal and three pairs of adanal setae similar in length (4), setiform, thin, smooth.

Anterior edge of genital plate with three setae. Aggenital seta located between genital and anal apertures, closer to genital aperture. Adanal lyrifissure located close and parallel to anal plate. Adanal setae ad 1 and ad 2 posterior, ad 3 lateral to anal plate. Unpaired postanal porose area oval (12–16 × 6–8).

Note: Roman letters refer to normal setae, Greek letters to solenidia (except ɛ = famulus).

Single prime (’) marks setae on the anterior and double prime (”) setae on the posterior side of a given leg segment. Parentheses refer to a pair of setae.

Legs ( Figs 8–11 ). Median claw distinctly thicker than lateral claws, all slightly barbed on dorsal side. Porose area on all femora and on trochanters III, IV present, but poorly visible.

Formulas of leg setation and solenidia: I (1-4-3-4-20) [1-2-2], II (1-4-3-4-15) [1-1-2], III (1-

2-1-3-15) [1-1-0], IV (1-2-2-3-12) [0-1-0]; homologies of setae and solenidia indicated in

Table 1. Famulus on tarsus I inserted anterior to solenidion ω 1. Solenidion ω 1 on tarsus I, ω 1

and ω 2 on tarsus II and σ on genu III bacilliform, other solenidia setiform. Solenidion of tibia

IV inserted in anterior part of the segment.

ETYMOLOGY. The species name sanqingi refers to three Taoist gods – The Three Pure

Ones (Sanqing daozu). Because Sanqing Taoist Temple, the headquarters of the Taoist temples in Taiwan, stands on the type locality Meihua Lake.

REMARKS. Flagellozetes (Cosmogalumna) sanqingi Ermilov sp. n. is morphologically most similar to Flagellozetes (Cosmogalumna) ornatus (Aoki, 1988) from the Oriental region and Japan (Aoki, 1988; Hagino & Shimano, 2017) in having completely reticulate notogaster and anogenital region, unpair median pore, four pairs of notogastral porose areas and in the absence of reticulate ornamentation on prodorsum and pteromorph. However, the new species differs from the latter by the presence of stria and short ridges on pteromorph

(versus tuberculate), strong longitudinal ridges on genital plate (versus mostly tuberculate and partially slightly striate) and reticulate ornamentation on anal plate (versus tuberculate).

near Meihua Lake) of Flagellozetes (Cosmogalumna) sanqingi Ermilov sp. n. (the place of collection is indicated by a red circle).

Figures

Figs 1–4. Flagellozetes (Cosmogalumna) sanqingi Ermilov sp. n., adult: 1 – dorsal view;

Figs 5–11. Flagellozetes (Cosmogalumna) sanqingi Ermilov sp. n., adult: 5 – subcapi-

Figs 12–14. Flagellozetes (Cosmogalumna) sanqingi Ermilov sp. n., adult, microscope

Figs 15–22. Flagellozetes (Cosmogalumna) sanqingi Ermilov sp. n., adult, microscope