Pergalumna paratsurusakii, Ermilov, Sergey G., Shtanchaeva, Umukusum Ya., Kalúz, Stanislav & Subías, Luis S., 2013

Ermilov, Sergey G., Shtanchaeva, Umukusum Ya., Kalúz, Stanislav & Subías, Luis S., 2013, Three new species of the genus Pergalumna (Acari: Oribatida: Galumnidae) from India, Zootaxa 3682 (3), pp. 412-420 : 413-415

Pergalumna paratsurusakii sp. nov.

( Figs 1–5 )

Diagnosis. Body size 365–415 × 265–332. Body surface and pteromorphs foveolate and densely microgranulate, genital plates with one longitudinal striae, anogenital region with three striate bands. Rostrum pointed. Rostral, lamellar and interlamellar setae long, slightly barbed. Sensilli setiform, ciliate. Anterior notogastral margin absent. Three pairs of porose areas developed (Aa and A1 elongate, A3 oval). Median pore present. Adanal setae ad 1 considerably longer than other adanal setae. Postanal porose area absent.

Description. Measurements. Body length 365 (holotype), 365–415 (mean 403; seven paratypes); body width 282 (holotype), 265–332 (mean 303; seven paratypes).

Integument. Body color brown. Body surface and pteromorphs foveolate (diameter of foveolae up to 6) and densely microgranulate (diameter of granules less than 1). Pteromorphs with distinct wrinkles. Genital plates with one long, longitudinal striae in lateral part. Anogenital region with two lateral, transversal striate bands (s), which are located between genital and anal apertures, and one arcuate striate band, which is located posteriorly to anal plates and marginally in ano-adanal region.

Prodorsum. Rostrum with strong tooth (t). Rostral (ro, 57–65), lamellar (le, 77–82) and interlamellar (in, 94– 102) setae setiform, slightly barbed. Sensilli (ss, 106–123) setiform, with short cilia. Exobothridial setae not present. Lamellar and sublamellar lines well developed, parallel. Insertions of lamellar setae located near to lamellar lines. Porose areas Ad not evident.

Notogaster. Anterior notogastral margin absent. Dorsophragmata (D) long. Notogastral setae represented by 10 pairs of alveoli. Three pairs of porose areas developed: Aa (32–36 × 8–12) and A1 (41–45 × 10–12) elongate, A3 (16–20 × 10–12) oval. Porose areas Aa with distinct margins, A1 and A3 without distinct margins. Alveoli of setae la inserted laterally to Aa. Median pore (mp) represented by several foveolae, located between porose areas A1 (similar in males and females). All lyrifissures and opisthonotal gland openings (gla) distinct, located typical for Pergalumna .

Gnathosoma . Morphology of subcapitulum, palps and chelicerae typical for Pergalumna (see Engelbrecht 1972; Ermilov & Anichkin 2011 a, 2011 b).

Epimeral and lateral podosomal regions. Apodemes 1, 2, sejugal and 3 well visible. Six pairs of setiform and smooth epimeral setae observed; setal formula: 1–0–2–3. Setae 1c, 3c and 4c (8–12) longer than others (4). Pedotectae, discidia (dis) and circumpedal carinae (cp) located typical for the genus.

Anogenital region. Six pairs of genital (g 1, g 2, 12; g 3– g 6, 4), one pair of aggenital (4), two pairs of anal (12) and three pairs of adanal (ad 1, 24–32; ad 2, ad 3, 4) setae setiform, thin, smooth (except slightly barbed ad 1). Anterior part of genital plates with two (g 1, g 2) setae. Adanal setae ad 3 inserted postero-laterally to lyrifissures iad. Postanal porose area absent.

Legs. Morphology of leg segments, setae and solenidia typical for Pergalumna (see Engelbrecht 1972; Ermilov & Anichkin 2011 a, 2011 b). Homology of setae and solenidia indicated in Table 1 .

Roman letters refer to normal setae (e to famulus), Greek letters to solenidia. Single prime (') marks setae on anterior and double prime (") setae on posterior side of the given leg segment. Parentheses refer to a pseudosymmetrical of setae.

Material examined. Holotype (female) and seven paratypes (three males and four females): India, 28°19 ' 32 '' N 95°57 ' 31 '' E, Arunachal Pradesh, Hunli vicinity, 1300 m a.s.l., collected 0 1.06.2012 by L. Dembický & O. Šauša.

Type deposition. The holotype is deposited in the collection of the Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia; four paratypes are in the collection of the Siberian Zoological Museum, Novosibirsk, Russia; three paratypes are in the personal collection of the first author.

Etymology. The prefix para is Latin meaning “near” and refers the similarity between the new species and the species Pergalumna tsurusakii Starý, 2005 .

Remarks. In having the combination of pointed rostrum, setiform sensilli, development of prodorsal setae, absence of anterior notogastral margin, presence of three pairs of notogastral porose areas, striate genital plates, long adanal setae ad 1, Pergalumna paratsurusakii sp. nov. is most similar to P. tsurusakii Starý, 2005 from Japan, however it clearly differs from the latter by the body surface with foveolae, microgranules and striate bands (versus smooth in P. tsurusakii ), smaller body size (365–415 × 265–332 versus 608 × 432 in P. tsurusakii ), elongate notogastral porose areas Aa and A1 (versus oval in P. tsurusakii ) and the absence of postanal porose area (versus present in P. tsurusakii ).

Also, Pergalumna paratsurusakii sp. nov. is similar morphologically to P. amorpha Mahunka, 2008 from Thailand and P. pterinervis ( Canestrini, 1898) from New Guinea and the Oriental region (see also Mahunka 1992), however it clearly differs from both by following characters: pointed rostrum (versus rounded in P. amorpha and P. pterinervis ), body surface with foveolae, microgranules and striate bands (versus punctate in P. amorpha or smooth and P. pterinervis ), presence of three pairs of notogastral porose areas (versus four pairs present in P. pterinervis ), presence of median pore (versus absent in P. amorpha and P. pterinervis ) and long adanal setae ad 1 (versus short in P. amorpha ).

Figures

FIGURES 1 – 5. Pergalumna paratsurusakii sp. nov., adult: 1 — dorsal view of body, 2 — ventral view of body (legs not shown), 3 — dorso-lateral view of prodorsum, 4 — medio-posterior view of notogaster, 5 — right pteromorpha. Scale bar 100 μm.

Tables

TABLE 1. Leg setation and solenidia of Pergalumna paratsurusakii sp. nov. (same for P. a s e t o s a sp. nov. and P. mahunkai sp. nov.).

Leg	Trochanter	Femur	Genu	Tibia	Tarsus
I	v'	d, (l), bv''	(l), v', σ	(l), (v), φ1, φ2	(ft), (tc), (it), (p), (u), (a), s, (pv), v', (pl), l'', e, ω1, ω2
II	v'	d, (l), bv''	(l), v', σ	(l), (v), φ	(ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2
III	v'	d, ev'	l', σ	l', (v), φ	(ft), (tc), (it), (p), (u), (a), s, (pv)
IV	v'	d, ev'	d, l'	l', (v), φ	ft'', (tc), (p), (u), (a), s, (pv)