a new subgenus and three new species of oribatid mites of the family scheloribatidae (acari:...

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A New Subgenus and Three New Species of Oribatid Mites of the FamilyScheloribatidae (Acari: Oribatida) from EcuadorAuthor(s): Sergey G. Ermilov and Stanislav KalúzSource: Annales Zoologici, 62(4):773-787. 2012.Published By: Museum and Institute of Zoology, Polish Academy of SciencesDOI: http://dx.doi.org/10.3161/000345412X659795URL: http://www.bioone.org/doi/full/10.3161/000345412X659795

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INTRODUCTION

Scheloribatidae (Acari: Oribatida) is a very largeoribatid mite family which have a cosmopolitan distri-bution and comprises more than 330 species from 27genera/subgenera.

In the course of taxonomic identification of Ecuado-rian scheloribatids we found representatives of threenew species, one belonging to the genus Perschelori-bates Hammer, 1973, one to Mucrobates Balogh andMahunka, 1979 and one to Fissurobates Balogh andMahunka, 1969.

Perscheloribates is a genus that was proposed byHammer (1973) with Perscheloribates clavatus Ham-mer, 1973 as type species. Currently, the genus com-prises 40 species, distributed in the Pantropical andsubtropical regions. Earlier only one identified and onenot identified species of this genus were recorded from

Ecuador (see Illig et al. 2007): Perscheloribates fis-suratus (Hammer, 1961), Perscheloribates sp. (asIscheloribates sp.). The main generic characters arepresented by Hammer (1961) and summarized byBalogh and Balogh (1990, 1992).

Fissurobates is a genus that was proposed byBalogh and Mahunka (1969) with Fissurobates spect-abilis Balogh and Mahunka, 1969 as type species. Cur-rently, the genus is monotypic; one known species dis-tributed in Bolivia. Hence, the genus Fissurobates isrecorded for the first time from Ecuador. The maingeneric characters are presented by Balogh andMahunka (1969) and summarized by Balogh andBalogh (1990, 1992).

Mucrobates is a genus that was proposed by Baloghand Mahunka (1979) with Mucrobates fissurataBalogh and Mahunka, 1979 as type species. Currently,the genus is monotypic; one known species distributed

A NEW SUBGENUS AND THREE NEW SPECIES OFORIBATID MITES OF THE FAMILY SCHELORIBATIDAE

(ACARI: ORIBATIDA) FROM ECUADOR

A N N A L E S Z O O L O G I C I (Warszawa), 2012, 62(4): 773-787

SERGEY G. ERMILOV1, * and STANISLAV KALÚZ2

1Phytosanitary Department, Nizhniy Novgorod Referral Center of the FederalService for Veterinary and Phytosanitary Inspection, Gagarin 97, Nizhniy

Novgorod 603107, Russia; e-mail: [email protected] of Ecology, Institute of Zoology, Slovak Academy of Sciences, Dúbravská

cesta 9, Bratislava 845 06, Slovakia; e-mail: [email protected]*Corresponding author

Abstract.— A new oribatid mite subgenus, Perscheloribates (Ecuadoribates) subgen.nov., and three new species, Perscheloribates (Ecuadoribates) pentasacculus sp. nov.,Fissurobates neotropicus sp. nov. and Mucrobates microsetosus sp. nov., of the family Scheloribatidae are described from Ecuador. The new subgenus differs fromPerscheloribates (Perscheloribates) by the number of notogastral sacculi and number ofgenital setae. Fissurobates and Mucrobates are recorded for the first time in Ecuador.The morphology of gnathosoma and legs are presented for the first time for any member ofFissurobates and Mucrobates.

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Key words.— oribatid mites, Scheloribatidae, Perscheloribates, Fissurobates, Mucrobates,new subgenus and species, Ecuador.

PL ISSN 0003-4541 © Fundacja Natura optima duxdoi: 10.3161/000345412X659795

in Cuba. Hence, the genus Mucrobates is recorded forthe first time from Ecuador. The main generic charac-ters are presented by Balogh and Mahunka (1979) andsummarized by Balogh and Balogh (1990, 1992).

The purpose of this paper is to describe and illus-trate these three new scheloribatid species under thenames Perscheloribates (Ecuadoribates) pentasac-culus sp. nov., Fissurobates neotropicus sp. nov. andMucrobates microsetosus sp. nov., and also to pro-pose a new subgenus of the genus Perscheloribatesunder the name Perscheloribates (Ecuadoribates)subgen. nov.

MATERIAL AND METHODS

Material. The locality and habitat data for the newspecies are given below (see Material examined sec-tions).

Specimens were mounted in lactic acid on tempo-rary cavity slides for measurement and illustration. Allbody measurements are presented in micrometers.Body length was measured in lateral view, from the tipof the rostrum to the posterior edge of the ventral plate,to avoid discrepancies caused by different degrees ofnotogastral distortion. Notogastral width refers to themaximum width in dorsal aspect. Lengths of bodysetae were measured in lateral aspect.

Formulae for leg setation are given in parenthesesaccording to the sequence trochanter-femur-genu-tib-ia-tarsus (famulus included). Formulae for leg soleni-dia are given in square brackets according to thesequence genu–tibia–tarsus.

The general morphological terminology used in thedescriptions follows that presented by Norton andBehan-Pelletier (2009).

SYSTEMATICS

Genus Perscheloribates Ecuadoribates subgen. nov.

Type species. Perscheloribates (Ecuadoribates)pentasacculus sp. nov.

Etymology. The subgeneric name “Ecuadori-bates” refers to the country of origin (Ecuador).

Diagnosis. Five pairs of sacculi present, S3 divid-ed into S3a and S3p. Genital plates with five pairs ofgenital setae. Palp solenidion and eupathidiumstraight. Leg tarsus III without setae it.

Comparison. The classification of genera in thefamily Scheloribatidae is difficult for understanding. Inour opinion, the main reason of it that in separation ofgenera the authors use characters, which possible cannot be used as generis characters (for example,

number of leg claws and genital setae, morphology ofsensilli and rostrum, presence or absence of aggenitaland interlamellar setae).

In having the combination of characters (morpholo-gy of rostrum, number of genital setae, monodactylouslegs, number of sacculi) the new taxa differ from allgenera in the Scheloribatidae. However, these charac-ters we do not use for propose of a new genus, becausethese characters not generic as we have specifiedabove. We place a new taxon as subgenus in the genusPerscheloribates because it is similar in having themorphology of lamellar complex, monodactylous legs,presence of 10 pairs of notogastral alveoli, setation ofaggenital and ano-adanal regions, morphology of sen-silli. The new subgenus clearly differs from type sub-genus, Perscheloribates (Perscheloribates), by thefive pairs of notogastral sacculi with separation S3 intoS3a and S3p (versus four pair of sacculi, S3 not divid-ed in Perscheloribates (Perscheloribates)), and alsopresence of five pairs of genital setae (versus four pairsin Perscheloribates (Perscheloribates)).

Perscheloribates (Ecuadoribates) pentasacculussp. nov.

(Figs 1–12)

Etymology. The specific name “pentasacculus”refers to the presence of five pairs of notogastral sac-culi.

Diagnnosis. Body size 531–547 × 398–415. Rostrumpointed. Rostral and lamellar setae long, interlamellarseta minute. Sensillus clavate. Prolamellar line absent.Seta it’’ on tarsi I, II and pair of it on tarsus III absent.

Description. Measurements. Body length 547(holotype), 531 (paratype); body width 415 (holotype),398 (paratype).

Integument. Body color brown. Body surfacesmooth. Posterior part of notogaster with irregularmuscle sigilla.

Prodorsum (Figs 1, 3, 5). Rostrum pointed. Lamel-la located laterally, longer than half of prodorsum,without cusp. Rostral (ro, 73) and lamellar (le, 82–90)setae setiform, barbed. Rostral seta inserted dorso-lat-erally. Interlamellar seta (in, 4) minute, thin, poorlyvisible. Lamellar seta inserted on the distal part oflamella. Sensillus (ss, 166–199) clavate, but the headweakly developed, short, barbed.

Notogaster (Figs 1, 4). Anterio-medial part weaklybordered. Ten pairs of notogastral alveoli present. Fivepairs of sacculi (Sa, S1, S2, S3a, S3p) small. Lyrifis-sures im and ip and opisthonotal gland opening (gla)located in normal position for Scheloribatidae.

Lateral part of body (Figs 1–3). Prolamellar lineabsent. Sublamellar line present. Sublamellar porosearea (Al) rounded, small (4). Exobothridial seta (ex,

774 S. G. ERMILOV and S. KALÚZ

12–16) setiform, thin, with indistinct barbs. PedotectaII (Pt II) rounded distally. Discidium (di) blunt-ended.Lyrifissure ia not evident; ih and ips short, thin, locat-ed in normal position for Scheloribatidae.

Gnathosoma (Figs 6–8). Subcapitulum longer thanwide: 106 × 86. Hypostomal setae (h, m, a) setiform,barbed, similar in length (24–28). Adoral setae andtheir alveoli absent. Palp (69) with setation0–2–1–3–9(+1ω). All setae (excepting distal and andlateral setae on tarsus) barbed. Solenidion thickened,blunt-ended, attached with eupathidium acm. Che-licera (110) chelate-dentate. Cheliceral setae setiform,barbed; cha (41) longer than chb (24). Trägårdh’sorgan (Tg) distinct.

Epimeral region (Fig. 2). Epimeral setal formula3–1–3–3. Setae 1a, 2a and 3a (20) little shorter thanothers (28–32); all setiform, thin, with indistinct barbs.

Anogenital region (Figs 2, 9, 10). Five pairs ofgenital (g1–g5 8–12), one pair of aggenital (ag 8–12),two pairs of anal (an1, an2 6–8) and three pairs ofadanal (ad1–ad3 4) setae setiform, thin, smooth. Lyri-fissure iad distinct, in paranal position. Seta ad3inserted in preanal position. Circumpedal carina (cp)distinct.

Legs (Figs 11, 12). Claw smooth. Formulae of legsetation and solenidia: I (1–5–3–4–17) [1–2–2], II(1–5–3–4–14) [1–1–2], III (2–3–1–3–13) [1–1–0], IV(1–2–2–3–12) [0–1–0]; homology of setae and solenidiaindicated in Table 1. Famulus short, straight, blunt-ended. Seta it’’ on tarsi I, II, both it on tarsus IIIabsent. Solenidia ω1 on tarsus I, ω1 and ω2 on tarsus IIand σ on genu III blunt-ended; the other solenidia seti-form.

Material examined. The holotype (female) andparatype have the following collection data: Ecuador,0°25’8.04’’S, 79°0’14.04’’W, Reserva de Bosque IntegralOtonga, near San Francisco de las Pampas, 2000–2200m a.s.l., sifted litter, 7.11.1996, collected by GiovanniOnore.

Type deposition. The holotype is deposited in thecollection of the Zoological Institute of the RussianAcademy of Sciences, St. Petersburg, Russia; one para-type is in the personal collection of the first author.

Comparison. Perscheloribates (Ecuadoribates)pentasacculus sp. nov. differs from the other species

of Perscheloribates (Perscheloribates) by the pres-ence of five pairs of sacculi, S3 divided into S3a andS3p (versus absence of four pairs of sacculi, S3 notdivided in representatives of Perscheloribates (Per-scheloribates)) and five pairs of genital setae (versusfour pairs in Perscheloribates (Perscheloribates)).

Fissurobates neotropicus sp. nov.(Figs 13–24)

EEtymology. The specific name “neotropicus”refers to the region of origin, Neotropical region.

Diagnosis. Body size 1121–1311 × 996–1095. Ros-tral, lamellar and interlamellar setae long, setiform.Sensillus spindle-form, with dilated head unilaterally.Four pairs of sacculi present. Prolamellar line welldeveloped. Seta ad3 inserted in paranal position.

Description. Measurements. Body length 1311(holotype), 1121–1124 (mean 1122; two paratypes);body width 1095 (holotype), 996–1045 (mean 1020; twoparatypes).

Integument. Body color yellow-brownish to darkbrown. Body surface smooth.

Prodorsum (Figs 13, 15, 17). Rostrum rounded,weakly protruding in dorsal wiev. Lamella located lat-erally, longer than half of prodorsum, without cusp.Rostral seta (116–149) setiform, barbed, inserted later-ally. Lamellar (232–249) and interlamellar (348–381)setae setiform, with indistinct barbs. Lamellar setainserted on the distal part of lamella. Sensillus (166–199) spindle-form, slightly barbed; head short, dilatedunilaterally, distal thin part shorter than head.

Notogaster (Figs 13, 16). Anterio-medial partweakly bordered. Ten pairs of notogastral alveoli pre-sented. Four pairs of sacculi (Sa, S1, S2, S3) with longand thin openings, located dorso-laterally on noto-gaster. Sa opening longer than S1 opening, and the lat-er longer than similar S2 and S3 openings. Lyrifissuresim and ip and opisthonotal gland opening located innormal position for Scheloribatidae.

Lateral part of body (Figs 13–15). Prolamellarline present. Sublamellar line long. Sublamellar porosearea not visible. Exobothridial seta (32) setiform, thin,with indistinct barbs. Pedotecta II rounded distally.

NEW ORIBATID MITES FROM FAMILY SCHELORIBATIDAE 775

Leg Trochanter Femur Genu Tibia Tarsus

I v’ d, (l), bv’’, v’’ (l), v’, σ (l), (v), ϕ1, ϕ2 (ft), (tc), it’, (p), (u), (a), s, (pv), (pl), e, ω1, ω2II v’ d, l’1, l’2, bv’’, v’’ (l), v’, σ (l), (v), ϕ (ft), (tc), it’, (p), (u), (a), s, (pv), ω1, ω2III l’, v’ d, l’, ev’ l’, σ l’, (v), ϕ (ft), (tc), (p), (u), (a), s, (pv)IV v’ d, ev’ d, l’ l’, (v), ϕ ft’’, (tc), (p), (u), (a), s, (pv)

Table 1. Leg setation and solenidia of Perscheloribates (Ecuadoribates) pentasacculus sp. nov.

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

Discidium (di) blunt-ended. Lyrifissure ia not evident;ih and ips short, thin, located in normal position forScheloribatidae.

Gnathosoma (Figs 18–20). Subcapitulum longerthan wide: 249 × 182. Hypostomal setae setiform,slightly barbed: h (82) longer than m (61) and a (45).Both adoral setae (32) setiform, barbed. Palp (135)with setation 0–2–1–3–9(+1ω). All setae (exceptingdistal, dorsal and lateral setae on tarsus) barbed.Solenidion thickened, blunt-ended, attached witheupathidium acm. Chelicera (278) chelate-dentate.Cheliceral setae setiform, barbed; cha (90) longer thanchb (53). Trägårdh’s organ distinct.

Epimeral region (Fig. 14). Epimeral setal formula3–1–3–3. Setae 1b, 3b, 3c and 4c (53–65) longer thanothers (32–41), setiform, thin, slightly barbed.

Anogenital region (Figs 14, 21, 22). Four pairs ofgenital (g1 53–61, g2–g4 36–41), one pair of aggenital(32–41), two pairs of anal (32–41) and three pairs ofadanal (32–41) setae setiform, smooth. Lyrifissure iaddistinct, in paranal position. Seta ad3 inserted paranal,anteriorly to iad. Circumpedal carina distinct.

Legs (Figs 23, 24). Claws smooth. Formulae of legsetation and solenidia: I (1–5(6)–3–4–18(19)) [1–2–2], II(1–5–3–4–15) [1–1–2], III (2–3–1–3–15) [1–1–0], IV(1–2–2–3–12) [0–1–0]; homology of setae and solenidiaindicated in Table 2. Famulus short, straight, blunt-ended. Solenidia ω1 on tarsus I, ω1 and ω2 on tarsus IIand σ on genu III blunt-ended; the other solenidia setiform.

Material examined. The holotype (female) andtwo paratypes have the following collection data:Ecuador, 0°25’8.04’’S, 79°0’14.04’’W, Reserva deBosque Integral Otonga, near San Francisco de lasPampas, 2000-2200 m a.s.l., sifted litter, 7.11.1996, col-lected by Giovanni Onore.

Type deposition. The holotype is deposited in thecollection of the Zoological Institute of the RussianAcademy of Sciences, St. Petersburg, Russia; oneparatype is deposited in the collection of Siberian Zoo-logical Museum, Novosibirsk, Russia; one paratype isin the personal collection of the first author.

Comparison. Fissurobates neotropicus sp. nov.clearly differs from the type species, Fissurobates

spectabilis Balogh and Mahunka, 1969, from Bolivia(see Balogh and Mahunka 1969) by the presence of fourpairs of sacculi (versus six pairs in F. spectabilis),spindle-form sensillus (versus thickened, with weaklydeveloped head in F. spectabilis), localization of setaad3 in paranal position (versus in preanal position inF. spectabilis).

Balogh and Mahunka (1969) proposed the genericcharacters to the genus Fissurobates, one of which ispresence of six pairs of sacculi on notogaster. Howev-er, Fissurobates neotropicus sp. nov. has only fourpairs of sacculi. Hence, this addition should be indicat-ed in any future diagnosis of the genus.

Mucrobates microsetosus sp. nov.(Figs 25–36)

Etymology. The specific name “microsetosus”refers to the very short notogastral setae.

Diagnosis. Body size 597–664 × 398–415. Bodysurface smooth. Interlamellar setae long, as long asprodorsum. Sensilli with lanceolate, slightly barbedhead. Ten pairs of notogastral setae presented bymicrosetae. All lyrifissures located in normal positionfor many Scheloribatidae.

Description. Measurements. Body length 647(holotype), 597–664 (mean 622; four paratypes); bodywidth 415 (holotype), 398–415 (mean 410; fourparatypes).

Integument. Body color brownish. Body surfacesmooth.

Prodorsum (Figs 25, 27, 29). Rostrum rounded.Lamella located dorsolaterally, equal approximately tohalf of prodorsum. Rostral (82–90), lamellar (155–159)and interlamellar (225–233) setae setiform, slightlybarbed. Interlamellar seta as long as prodorsum. Sen-sillus (114–123) with lanceolate, slightly barbed head.

Notogaster (Figs 25, 28). Ten pairs of notogastralsetae presented by microsetae (length up to 4), oftenvisible only with high magnification. Four pairs of smallsacculi (Sa, S1, S2, S3) well visible. Lyrifissures imand ip and opisthonotal gland opening located in nor-mal position for many Scheloribatidae.



I v’ d, (l), bv’’, v’’; (l), v’, σ (l), (v), ϕ1, ϕ2 (ft), (tc), (it), (p), (u), (a), s, (pv), (pl), e, ω1, ω2;also rarely l’’* also rarely v’

II v’ d, l’1, l’2, bv’’, v’’ (l), v’, σ (l), (v), ϕ (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2III l’, v’ d, l’, 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)

Table 2. Leg setation and solenidia of Fissurobates neotropicus sp. nov.

See Table 1 for explanations.

Lateral part of body (Figs 26, 27, 34). Prolamellarline well developed. Sublamellar line present, but usu-ally poorly visible. Sublamellar porose area (Al) small,rounded (4–6). Exobothridial seta (24–32) setiform,slightly barbed. Pedotecta II tipical for genus (withdeveloped blunt ledge). Discidium blunt-ended. Lyrifis-sures ia, ih and ips short, thin, located in normal posi-tion for many Scheloribatidae.

Gnathosoma (Figs 29–31). Subcapitulum longerthan wide: 143–147 × 90. Hypostomal setae setiform,barbed: h (41) longer than m and a (both 28–32). Bothadoral setae (12) setiform, barbed. Palp (82–90) with se-tation 0–2–1–3–9(+1ω). All setae (excepting distal setaeon tarsus) barbed. Solenidion thickened, blunt-ended,attached with eupathidium. Chelicera (151–155) chelate-dentate. Cheliceral setae setiform, barbed; cha (41–45)longer than chb (24–28). Trägårdh’s organ distinct.

Epimeral region (Fig. 26). Epimeral setal formula3–1–3–3. Setae differ little in length (16–24, only 3ashorter 8–12), setiform, thin, slightly barbed.

Anogenital region (Figs 26, 33). Four pairs genital(20), one pair aggenital (20), two pairs anal (20–28) andthree pairs adanal (28–36) setae setiform, with indis-tinct barbs. Lyrifissure iad distinct.

Legs (Figs 35, 36). Claws smooth. Formulae of legsetation and solenidia: I (1–5–3–4–19) [1–2–2], II(1–5–2–4–15) [1–1–2], III (2–3–1–3–15) [1–1–0], IV(1–2–2–3–12) [0–1–0]; homology of setae and solenidiaindicated in Table 3. All setae setiform, slightly barbedor with short cilia. Famulus short, straight, blunt-end-ed. Solenidia ω1 on tarsi I, ω1 and ω2 on tarsi II thick-ened, blunt-ended; the other solenidia setiform.

Material examined. The holotype (female) andthree paratypes have the following collection data:Ecuador, 0°25’8.04’’S, 79°0’14.04’’W, Reserva deBosque Integral Otonga, near San Francisco de lasPampas, 2000–2200 m a.s.l., sifted litter, 7.11.1996, col-lected by Giovanni Onore.

Type deposition. The holotype is deposited in thecollection of the Zoological Institute of the RussianAcademy of Sciences, St. Petersburg, Russia; twoparatypes are deposited in the collection of SiberianZoological Museum, Novosibirsk, Russia; one paratypeis in the personal collection of the first author.

Comparison. In general morphological characters,Mucrobates microsetosus sp. nov. is similar to other

known species (type species) of this genus, Mucro-bates fissuratus Balogh and Mahunka, 1979, fromCuba (see Balogh and Mahunka 1979). Hovewer itclearly differs from the latter by the presence of veryshort notogastral setae (absent in M. fissuratus), lo-calization of lyrifissures in normal position (one pair oflyrifissures located near to the genital aperture (in M. fissuratus), rostral setae inserted laterally (dorso-laterally in M. fissuratus), longer sensilli (shorter inM. fissuratus), tips of sejugal apodemes near to thegenital aperture (far from genital aperture in M. fis-suratus), smooth anogenital region (foveolate in M. fissuratus).

Both known representatives of the genus Mucro-bates (new species and type species) very similar mor-phologically to the species of the subgenus Schelori-bates (Hemileius) Berlese, 1916 (see Berlese 1916,Bayartogtokh et al. 2011). They differ from the latteronly by the one main character: pedotectum II withblunt ledge (rounded in Scheloribates (Hemileius)).Probably, that this character is insufficient for preser-vation of taxonomic status of the genus Mucrobatesand is possible, that both representatives of Mucro-bates should be moved to the subgenus Scheloribates(Hemileius) or potentially new subgenus Schelori-bates (Mucrobates) Balogh and Mahunka, 1979. How-ever, our opinion is only the assumption as the typespecies differs also from Mucrobates microsetosussp. nov. and the other Scheloribatidae by unique pres-ence of one pair of lyrifissures near to genital aperture.Thus, additional studying of typical material is re-quired, and only then it will be possible to draw ade-quate conclusions on the taxonomic status of the genusMucrobates.

ACKNOWLEDGEMENTS

We gratefully acknowledge Dr. Umukusum Shtan-chaeva (Caspian Institute of Biological Resources,Makhachkala, Russia) and Prof. Dr. Luis Subías (Universidad Complutense de Madrid, Madrid, Spain)for consultations. We gratefully acknowledge Prof. Dr.Giovanni Onore (Pontifical Catholic University, Ecua-dor) for his help with collecting Ecuadorian oribatidmites.



I v’ d, (l), bv’’, v’’ (l), v’, σ (l), (v), ϕ1, ϕ2 (ft), (tc), (it), (p), (u), (a), s, (pv), v’, (pl), e, ω1, ω2II v’ d, l’1, l’2, bv’’, v’’ (l), σ (l), (v), ϕ (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2III l’, v’ d, l’, 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)

Table 3. Leg setation and solenidia of Mucrobates microsetosus sp. nov.

See Table 1 for explanations.


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Hammer, M. 1961. Investigations on the oribatid fauna of the Andes Mountains. II. Peru. Det Kongelige DanskeViden-skabernes Selskab Biologiske Skrifter, 13(1), 1–157.

Hammer, M. 1973. Oribatids from Tongatapu and Eua, theTonga Islands, and from Upolu, Western Samoa. Det Kongelige Danske Videnskabernes Selskab BiologiskeSkrifter, 20(3), 1–70.

Illig, J., Sandmann D., Schatz H., Scheu S. and M. Maraun.2007. Checklist reserva biólogica San Francisco (Prov.Zamora-Chinchipe, S. Ecuador). Ecotropical monographs,4, 221–230.

Norton, R. A. and V. M. Behan–Pelletier. 2009. Oribatida.Chapter 15. In: G. W. Krantz & D.E. Walter (eds.). A Man-ual of Acarology. Texas Tech Univ. Press, Lubbock,430–564.

Received: February 27, 2012Accepted: May 12, 2012


Figures 1–4. Perscheloribates (Ecuadoribates) pentasacculus sp. nov., adult: 1 – dorsal view; 2 – ventral view, legs and hypostomal setae not shown; 3 – lateral view of prodorsum, legs, palp, hypostomal and epimeral setae, epimeral borders not shown; 4 – posterior view, legs not shown.

Scale bar 100 μm.

1 2

3 4


Figures 5–10. Perscheloribates (Ecuadoribates) pentasacculus sp. nov., adult: 5 – sensillus; 6 – subcapitulum, left half; 7 – palp; 8 – chelicera; 9 – genital plate, right; 10 – anal plate, right. Scale bars (5, 6, 8–10) 20 μm, (7) 10 μm.

9

5 6 7

8

10


Figures 11–12. Perscheloribates (Ecuadoribates) pentasacculus sp. nov., adult: 11 – leg I, without trochanters, left, antiaxial view; 12 – leg IV, right, antiaxial view. Scale bar 50 μm.

11 12


Figures 13–16. Fissurobates neotropicus sp. nov., adult: 13 – dorsal view; 14 – ventral view, legs and hypostomal setae not shown; 15 – lateralview of prodorsum, legs, palp, hypostomal and epimeral setae, epimeral borders not shown; 16 – posterior view, legs not shown. Scale bar 200 μm.

1615

13 14


Figures 17–22. Fissurobates neotropicus sp. nov., adult: 17 – sensillus; 18 – subcapitulum, right half; 19 – palp; 20 – chelicera; 21 – genital plate, left; 22 – anal plate, left. Scale bars (17, 19) 20 μm, (18, 20, 21) 50 μm, (22) 100 μm.

17

18

19

20 21 22


Figures 23–24. Fissurobates neotropicus sp. nov., adult: 23 – leg I, without trochanters, right, antiaxial view; 24 – leg IV, left, antiaxial view. Scale bar 50 μm.

23 24


Figures 25–28. Mucrobates microsetosus sp. nov., adult: 25 – dorsal view; 26 – ventral view, legs and hypostomal setae not shown; 27 – lateral view of prodorsum, legs and gnathosoma not shown; 28 – posterior view, legs not shown. Scale bar (25, 26) 200 μm, (27, 28) 100 μm.

25 26

27 28


Figures 29–34. Mucrobates microsetosus sp. nov., adult: 29 – sensillus; 30 – subcapitulum, right half; 31 – palp; 32 – chelicera, anterior part; 33 – genital plate, left; 34 – pedotectum II. Scale bars (29, 31, 33, 34) 20 μm, (30, 32) 50 μm.

29 3031

32

33 34


Figures 35–36. Mucrobates microsetosus sp. nov., adult: 35 – leg I, without trochanters, left, paraxial view; 36 – leg IV, left, antiaxial view. Scale bar 50 μm.

3536

a new subgenus and three new species of oribatid mites of the family scheloribatidae (acari:...

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