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1 Acarologia A quarterly journal of acarology, since 1959 Publishing on all aspects of the Acari All information: acarologia@supagro.inra.fr Acarologia is proudly non-profit, with no page charges and free open access Please help us maintain this system by encouraging your institutes to subscribe to the print version of the journal and by sending us your high quality research on the Acari. Subscriptions: Year 2018 (Volume 58): Previous volumes ( ): 250 / year (4 issues) Acarologia, CBGP, CS 30016, MONTFERRIER-sur-LEZ Cedex, France The digitalization of Acarologia papers prior to 2000 was supported by Agropolis Fondation under the reference ID through the «Investissements d avenir» programme (Labex Agro: ANR-10-LABX ) Acarologia is under free license and distributed under the terms of the Creative Commons-BY-NC-ND which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

2 A NEW SPECIES OF THE GENUS PODOPTEROTEGAEUS (ACARI: ORIBATIDA) BY T. FUJIKAWA 1 (Accepted July 2007) NEW SPECIES NIPPON ORIBATIDA PICEA GLEHNJI FORESTS PODOPTEROTEGAEUS SUMMARY: The forth species of the genus Podopterotegaeus was newly described from natural Picea glehnii forests at Mt. Meakan and Mt. Hayachine in Japan. ZusAMMENFASSUNG : Eine neue Art von der Gattung Podopterotegaeus wurde beschrieben aus Picea Wald in Nippon. In 1969, AoKI erected a genus Podopterotegaeus, designating a new species, P. tectus from Shiga Heights as the type. PIFFL (1972) established the family Podopterotegaeidae for the genus, and described a new species P. altimonticola from Nepal (3,900 m). PAN'Kov (1984) added P. bisetus from the Far East in Russia to the genus. Members of the genus are remarkable by their exceptional lamellae and humeral region. The present species with characteristic features of the genus was collected from natural Picea glehnii forests of Mt. Meakan in Hokkaido and Mt. Hayachine in Iwate Prefecture, Japan, and described newly as the forth member of the genus. The notation follows after AOKI (1969) and VAN DER HAMMEN (1989). PODOPTEROTEGAEUS MIY AMAENSIS spec. nov. [Japanese name: Miyama-hireashidani] (FIGS. 1-4) M easurements and eo/or (14 exs.): Body length, 321 (334) 343 flm; wide, 186 (194) 207fLm. Light yellowish brown. Surface smooth notogaster but finely granulated on prodorsum, humeral region, ventral region and legs. Prodorsum: Rostrum truncated but hard visible from above because of large lamellae covered (FIG. la). Rostral setae (ro) smooth and short, inserted at the lateral side of rostrum (FIG. 2A). Lamellar surface weakly striated under granulation. Cusps long, concaved at the anterior margin, with barbed lamellar setae (le) anterodorsally (FIG. 3A). Tutorium like vertical ridge without tooth, extending forwards from bothridia for a distance of about three-forth as long as the prodorsum. Interlamellar region with weakly sclerotized ridges at the lateral side. Interlamellar setae (in) sparsely barbed. Bothridia large with developed dorsal and ventral bothridial plates, opening antero-laterally. Sensilli (ss) long, conspicuously barbed unilaterally at the middle and wholely at the distal one-third. Exobothridial setae (ex) fine, located antero-ventrally on bothridia. Lateral prosomatic mark (m) present (FIG. 2B). Relative lengths: ss> in> le > ex "" > e ro. I. Ueminami, Nagasato , Asagiri-cho Kumagun, Kumamoto Prefecture , Nippon. Acarologia, 2008, XLVIII, 1-2:

3 -106- le / FIG I.- Podopterotegaeus miyamaensis spec. nov. (Holotype NSMT-Ac 11798). A.-Dorsal view (le: Lamellar seta; in: Interlamellar seta; ss: Sensillus; cl> c 2, la: Dorsal setae; gla: Gland opening). B. - Ventral view (ro: Rostra! seta; a, m, h: Anterior, medial and posterior infracapitular setae, respectively; I a, 2a, 3a, 4a, 4b: Epimeral setae; g 1 : Genital seta; ag: Aggenital seta; an 1 : Anal seta; ad 3 : Adanal seta; iad: Adanallyrifissure). Notogastet: Slightly longer than width, bearing eleven pairs of dorsal setae peripherally. Surface smooth except for humeral regions. Humeral regions granulate, rather angular in form, with a pocket-like excavation bearing two setae, c 1 and c 2 at the bottom; cl barbed unilaterally, longer than c 2 ; c 2 pilose (FIGS. 2C & 2D). Other nine pairs of dorsal setae fine. Five pairs of lyrifissures and gland opening visible at the lateral side (FIG. 2E). Ventral region: Genito-anal setae: ( ); all setae smooth, short. Genital setae inserted near inner margin of the plates; g 1 longer than the remainder. Anal opening wider posteriorally than anteriorally, resembling triangle in form. Anterior interlocking well-developed. Subcapitulum diarthric, bearing each one pair of anterior (a), medial (m) and posterior (h) infracapitular setae; setae smooth. Pedotecta developed. Epimeral setae: ( ); setae smooth, short. Pedipalpal setae excluding solenidion: ( ): Chelicera! setae, cha thick, barbed unilatelally with mid-potion strongly elbowed; chb thin, barbed bilaterally (FIG. 3B). Lyrifissures iad, paraanal, near anterior margin of plates. Adanal setae ad 1 and ad 2 postanal, and ad 3 adanal at the level between anal setae an 1 and an 2. Relative lengths: a> g 1 >m> h > 3a >ad> an> ag.

4 107- E la ss ~.. ::--.. \, \ \~~,: -:-.:;'~ -, B!,_ ' ' g I a 1 ~o..e5 > ps3 ~1-,-,ip~ ',-!~1 52 ' ) ~hl ~-h2 FIG Podopterotegaeus miyamaensis spec. nov. (Depressed paratype NSMT-Ac 11800a) A. - Lateral view of rostra! region (le: Lamellar seta; ro: Rostra! seta; I c: Epimeral seta); B.-Lateral view of bothridial region (ex: Exobothridial seta; in: Interlamellar seta; m: Lateral prosomaticmark; ss: Sensillus); C.- Left humeral region (cl> c 2, Dorsal setae); D. - Lateral view of right humeral region (ia: Lyrifissure;la: Dorsal setae); E, Lateral view of left notogastral margin (cl> c 2,, la, /m, lp, hj> h 2, h 3, psj> ps 2, ps 3, Dorsal setae; ia, ih, im, ips, ip: Lyrifissure; gla: Gland opening).

5 -108- A B c '.,....,,.. -. ~., ~ 25t~m ABCD E l g, ag ) l l { l A an ad 3a m h D E FIG Podopterotegaeus miyamaensis spec. nov. (Depressed paratype,a-d: NSMT-Ac 11800a; E: NSMT-Ac 11800b) A.- Lamellae; B. Chelicera (cha: Posterior seta; chb: Anterior seta); C.-Pedipalp; D. -Setae: (g 1 : Genital seta; ag: Aggenital seta; an: Anal seta; ad: Adanal seta; 3a: Epimeral seta; a, m, h: Infracapitural setae); E.- Deutonymphal scalps (Apo: Area porosa).

6 ' t c B - 109,_. ' ' D ' ~ ',, " ---(I FrG. 4.- Podopterotegaeus miyamaensis spec. nov. (Depressed paratype NSMT-Ac 11800a) A.-Tarsus I and tibia I (AR); B.-Genu I and femur I (AL); C. - Ventral view of trochanter I (a part, R); D. - Solenidial region on tarsus I (PL); E.-Tarsus II to genu II (PR); F. Femur II and a part of trochanter II (AR); G.-Leg III (PR); H.- Tarsus IV (PR); I.-Tibia to trochanter of leg IV (PR). (A: Antaxial; L: Left; P: Paraxial; R: Right).

7 Legs: All legs monodactle; claw bearing one or two minute dents dorsally at the mid-portion. Leg chaetotaxy including famulus, but excluding solenidia, I ( ); II (1-3-3 or ); Ill ( ); IV ( ): Number of seta on genu II variable in number. Leg fin on femora and trochantera of leg Ill and IV remarkable. Solenidiotaxy, I (1-2-2); II (1-1- 2); Ill (1-1-0), IV (0-1-0). Solenidia on tibiae II to IV, and all genua bacilliform, but the others terminating in a fine point. On tarsus I, famulus located just anteriorly between solenidia w 1 and w 2. Solenidia cp 1, and a on genua I and II, coupled with seta d. Deutonymphal scalp: Network-like structure with elongate area porosa (Apo ), six pairs of thick, roughened setae and one pair of short, barbed setae. MATERIAL EXAMINED: Holotype (NSMT-Ac 11798) from mosses at the forest floor of a natural Picea glehnii Masters forest at the western side of Mt. Meakan (about 700 m above the sea-level) of Mo-Ashoro District in eastern Hokkaido, Aug. 27, 2001, Y NAKAMURA; 11 paratypes (NSMT-Ac 11799, 11800a and 11800b ): the same data as holotype; 2 paratypes: humus and soil of a natural P. glehnii forest, at Mt. Hayachine in Iwate Pref, Nov. 6, 2000, Y-H. NAKA MURA. The types are deposited in the National Science Museum, Tokyo. REMARKS:, The new species is very similar to the type species, P. tectus Aoki, 1969 among three known members of the genus Podopterotegaeus Aoki, 1969 in dorsal view. The author tried to reexamine the type specimens, but without success. According to the original description of all members belonging to the genus, the new species differs from P. tectus by smaller body size, concave anterior margin of cusps bearing lamellar setae anterodorsally, eleven pairs of dorsal setae including two setae into humeral excavation, and interlamellar ridges, from P. bisetus by seta c 1 longer than c 2, and different structure of interlamellar ridges, and from P. altimonticola by concave anterior margin of cuspis, setae ex inserted at the anterolateral side of bothridia and different setal number epimerata and genua I. ACKNOWLEDGMENT The author desires to express her obligation to Pro Dr. Y NAK.AMURA of Ehime University and Dr. Y-N. NAKAMURA of Kyushu University for their giving her the samples. REFERENCES AoKI (J.-1.), Taxonomic investigations on freeliving mites in the subalpine forest on Shiga Heights IBP Area Ill. Cryptostigmata. - Bull. Nat. Sci. M us. Tokyo, 12 (1): HAMMEN (L. VAN DER), An Introduction to Comparative Arachnology. - SP B Academic Publishing, The Hague. PAN'Kov (A. N.), A new species and interesting findings of mites (Oribatei) in the Far East.-Zoo!. Zh., 58 (9): PIFFL (E.), Zur Systematik der Oribatiden (Acari) (Neue Oribatiden aus Nepal, Costa Rica und Brasilien ergeben eine neue Familie der Unduloribatidae und erweitern die Polypterozetidae urn die Gattungen Podopterotegaeus, Nodocepheus, Eremaeozetes und Tumerozetes.).- Khumbu Himal, 4 (2):