two new species of oribatid mites (acari: oribatida) from ethiopia

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Two New Species of Oribatid Mites (Acari: Oribatida) from EthiopiaAuthor(s): Sergey G. Ermilov, Ekaterina A. Sidorchuk and Leonid B. RybalovSource: Annales Zoologici, 60(3):407-417. 2010.Published By: Museum and Institute of Zoology, Polish Academy of SciencesDOI: http://dx.doi.org/10.3161/000345410X535398URL: http://www.bioone.org/doi/full/10.3161/000345410X535398

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INTRODUCTION

In the course of taxonomic studies of oribatid mitefauna of Bale Mountains National Park (Ethiopia,African region) we have found new species in the gen-era Machadobelba Balogh, 1958 (Machadobelbidae)and Microtegeus Berlese, 1916 (Microtegeidae), whichare described below.

The pantropical genus Machadobelba comprises15 species; three species of this genus are known from Africa: M. dispar Balogh, 1958 (Distribution:Congo, Ghana), M. symmetrica Balogh, 1958 (Congo),

M. tanzica Mahunka, 1988 (Tanzania). The pantropi-cal genus Microtegeus comprises 31 species; sevenspecies of which are known from continental Africa: M. alzaveri Pérez-Íńigo, 1958 (Guinea Equatorial), M. cervus Mahunka, 1983 (Tanzania), M. papillosusMahunka, 1984 (Tanzania), M. quadrisetosus Baloghet Mahunka, 1977 (Congo), M. rugosus Mahunka, 1982(Ethiopia), M. undulatus (Berlese, 1916) (Somalia,Tanzania), M. variabilis Mahunka, 1988 (Tanzania)(Subías, 2004). Distinctive morphological characters ofAfrican species of Machadobelba and Microtegeuswere given in the keys of Balogh and Balogh (2002).

TWO NEW SPECIES OF ORIBATID MITES (ACARI: ORIBATIDA) FROM ETHIOPIA

A N N A L E S Z O O L O G I C I (Warszawa), 2010, 60(3): 407-417

SERGEY G. ERMILOV1, EKATERINA A. SIDORCHUK2

and LEONID B. RYBALOV3

1Laboratory of Entomology, Center of Independent Examinations-NN, Gagarin 97,603107 Nizhniy Novgorod, Russia; e-mail: [email protected]

(corresponding author)2Laboratory of Arthropods, Paleontological Institute, Russian Academy of

Sciences, Profsoyuznaya 123, 117997 Moscow, Russia; e-mail: [email protected]

3Laboratory for Soil Zoology and General Entomology, Institute of Ecological andEvolutionary Problems, Russian Academy of Sciences, Lenin 33, 117071 Moscow,

Russia; e-mail: [email protected]

Abstract.— We described Machadobelba shtanchaevae sp. nov. and Microtegeuskhaustovi sp. nov., collected in Bale Mountains National Park (Africa, Ethiopia). The firstnew species is similar to Machadobelba symmetrica Balogh, 1958 (Distribution: Africa, Congo) and to Machadobelba ceylonica Balogh, 1970 (Asia, Sri Lanka), but differs fromthe former species by body size, length of costulae and length of notogastral setae, and fromthe latter species by body size, morphology of cristae and position of adanal setae ad3.Microtegeus khaustovi sp. nov. is similar to Microtegeus variabilis Mahunka, 1988(Africa, Tanzania) and Microtegeus rugosus Mahunka, 1982 (Africa, Ethiopia), but differsfrom the former species by body size, number of prodorsal tubercles, length of notogastralsetae c, and morphology of the notogaster; from the latter species it differs by morphologyof lamellar setae, the number of prodorsal tubercles, and morphology of the notogaster.

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Key words.— Oribatid mites, new species, Machadobelbidae, Microtegeidae, Machado-belba shtanchaevae, Microtegeus khaustovi, Ethiopia.

PL ISSN 0003-4541 © Fundacja Natura optima duxdoi: 10.3161/000345410X535398

MATERIAL AND METHODS

Machadobelba shtanchaevae sp. nov. – six speci-mens (females); Microtegeus khaustovi sp. nov. – fivespecimens (females). The locality and habitat charac-terization of the new species are given in the “Materialexamined” section.

Specimens were studied and illustrated in lacticacid, mounted on temporary cavity slides for the dura-tion of the study. All body measurements are present-ed in micrometers for holotype and first, second andthird paratypes (in parentheses, accordingly). Bodylength was measured in lateral view, from the tip of therostrum to the posterior edge of the ventral plate, toavoid discrepancies caused by different degrees ofnotogastral distension. Notogastral width refers to themaximum width in dorsal aspect. Length of body setaewas measured in lateral aspect. The fourth paratype ofboth species was dissected for detailed studies(gnathosoma, ovipositor, legs).

Formulas for leg setation are given according to thesequence trochanter–femur–genu–tibia–tarsus (famu-lus included). Formulas for leg solenidia are givenaccording to the sequence genu–tibia–tarsus, for eachleg.

TAXONOMY

Family Machadobelbidae Balogh, 1972

Genus Machadobelba Balogh, 1958

Machadobelba shtanchaevae sp. nov.(Figs 1–19)

Diagnosis. With character states of Machadobel-ba as proposed by Balogh (1958), and summarized byBalogh and Balogh (1992) and Sanyal et al. (2005). Thenew species is recognized by the large size of body,531–597 × 282–315; costulae shorter than the halflength of prodorsum; rostral setae 45–53, barbed;lamellar and interlamellar setae approximately ofequal length, 28–32, thinner, smooth or with severalvery small barbs (visible only under high magnifica-tion, ×1500); sensilli 142–146, bifurcated; notogasterwith one pair of humeral tubercles, and with one pair ofmedian tubercles continued in long, well developedcristae; notogastral setae rather short, 28–32; adanalsetae ad3 absent from anal plates.

Measurements. Largest species in genus. Bodylength 597 (581, 531, 564), length of notogaster 381(365, 332, 365), width of notogaster 315 (298, 282, 298).

Integument. Body color red-brown. Surface of bodysmooth. Lateral parts of prodorsum with muscle sigilla.Circumgastric band of sigilla present.

Prodorsum and lateral part of body (Figs 1, 3, 4).Rostrum conical, strongly oblong, rounded in dorsalaspect, distinctly projecting anteroventrally in lateralaspect (Fig. 4). Costulae shorter than the half length ofprodorsum. Basal part of prodorsum in interbothridialregion with one pair of tubercles. Sclerotized trans-verse wide line present between tubercles, visible intransmitted light. Rostral setae 53 (49, 45, 49) in length,setiform, well barbed, located dorsally on prodorsum(Fig. 5). Lamellar and interlamellar setae shorter andthinner than rostral setae, of approximately equallength, 32 (32, 28, 28), strongly curved, smooth or some-times with several very small barbs (visible only underhigh magnification, ×1500) (Fig. 6). Sensilli 142 (146,142, 142) in length, deeply bifurcated (3/4 of sensillusapproximately). Both branches barbed on one sidemedio-distally (Fig. 8). Exobothridial setae short, 16(12, 12, 12), thin, smooth (Fig. 7). Pedotecta 1 verylarge; discidium well developed, finger-shaped. Medio-lateral part of prodorsum and posterior part of pedo-tecta 1 with several (3 and 3–4, accordingly), smalltubercles.

Notogaster (Figs 1, 3). Oval in dorsal view. With onepair of humeral tubercles, and with one pair of mediantubercles continuing as long cristae. Ten pairs of noto-gastral setae rather short, approximately equal inlength, 32 (36, 32, 28), straight or slightly curved,smooth or sometimes with several very small barbs(visible only under high magnification, ×1500) (Fig. 9).All lyrifissures (ia, im, ih, ips, ip) and opisthosomalgland opening (gla) well developed.

Anogenital region (Fig. 2). All anogenital setae seti-form, thin, smooth. Anal, adanal, aggenital setae ofapproximately equal length, 20 (24, 20, 20), longer thangenital setae, 12 (16, 16, 16) (Fig. 10). Lyrifissures iadwell developed, adjacent to anal plates. Ovipositor (Fig.12) elongate, narrow (163 × 45). Length of blades 73,length of bDp (cylindrical distal part) 90. Each of threelobes with 4 straight or slightly curved smooth setae.Setae ψ1 ≈ τ1 (41) longer than ψ2 ≈ τa ≈ τb ≈ τc (20).Setae k absent.

Epimeral region (Fig. 2). Apodemes and epimeralborders well developed. Epimeral setae approximatelyequal in length, 24 (20, 16, 20), thin, smooth or with onesmall barb (visible only under high magnification,×1500) (Fig. 11). Setae 3c located on tubercles.

Gnathosoma (Figs 13–15). Subcapitulum (Fig. 13)longer than wide, 123 × 82. Subcapitular mentumwider than long (length of mentum 61). Hypostomalsetae setiform, smooth; setae a and m of approximate-ly equal length (20), setae h little longer (24). Laterallips with 2 pairs of short (8), thin adoral setae. Palps(length 82) with setation 0–2–1–3–9(+1ω). All setae,except palptarsal, barbed. Palpal solenidion ω pressedto surface of tarsus (Fig. 14). Chelicera (length 114)with few blunt teeth on fixed and movable digits.

408 S. G. ERMILOV, E. A. SIDORCHUK and L. B. RYBALOV

TWO NEW SPECIES OF ORIBATID MITES FROM ETHIOPIA 409

Cheliceral setae long, setiform, barbed; cha (41) longerthan chb (24) (Fig. 15).

Legs (Figs 16–19). Claws on legs II–IV with verysmall tubercle ventro-basally. Formula of leg setationand solenidia: I (1–5–2–4–20) [1–2–2], II (1–5–2–4–14)[1–1–2], III (2–3–1–3–13) [1–1–0], IV (1–2–2–3–10)[0–1–0]; homology of setae and solenidia indicated inTable 1. Setae well barbed; setae p on tarsi II–IVabsent. Famulus acuminate. All solenidia free, blunt-ended, except flagellate ϕ1 on tibiae I. Solenidia σ ontibiae IV and ϕ on genua I, II with hook-form tips;solenidion ϕ2 on tibia I bow-shaped.

Type material. Holotype (female), paratypes (fivefemales). Specimens were obtained from: Africa,Ethiopia, 6°38’N, 39°43’E, 1883 m above sea level, BaleMountains National Park, Harenna Forest, in soil, col-lected by L.B. Rybalov, 23.11.2009.

The holotype is deposited in the collection of theZoological Institute of the Russian Academy of Sci-ences, St. Petersburg, Russia; first, second, thirdparatypes ibid; fourth, fifth paratypes is in the person-al collection of the first author.

Etymology. The species is named in honor ofRussian acarologist, Dr. Umukusum Ya. Shtanchaevaof the Caspian Institute of Biological Resources,Makhachkala.

Differential diagnosis. Machadobelba shtan-chaevae sp. nov. is most similar to Machadobelba

symmetrica Balogh, 1958 (Africa, Congo), but differsfrom this species by body size, length of costulae andlength of notogastral setae. The new species is alsosimilar to Machadobelba ceylonica Balogh, 1970(Asia, Sri Lanka), but differs by body size, morphologyof the cristae and position of adanal setae ad3. Distinc-tive characters of the three species are presented inthe Table 2.

Distribution. At present, this species is onlyknown from type locality, Ethiopia.

Family Microtegeidae Balogh, 1972

Genus Microtegeus Berlese, 1916

Microtegeus khaustovi sp. nov.(Figs 20–35)

Diagnosis. With character states of Microtegeusas proposed by Berlese (1916), and summarized by assummarized by Balogh and Balogh (1992). The newspecies is recognized by the size of body, 398 ×257–265 and surface of body with irregular rugae andgranules. Basal part of prodorsum in the interbothridi-al region with four tubercles. All prodorsal setae seti-form, smooth; rostral setae (24) shorter than lamellarand interlamellar setae (49–53). Sensilli 82–86, with

Leg Trochanter Femur Genu Tibia Tarsus

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

II v’ d, (l), bv”, v” (l), σ (l), (v), ϕ (ft), (tc), (it), (u), (a), s, (pv), l”, ω1, ω2

III l’, v’ d, l’, ev’ l’, σ l’, (v), ϕ (ft), (tc), (it), (u), (a), s, (pv)IV v’ d, ev’ d, l’ l’, (v), ϕ ft”, (tc), (u), (a), s, (pv)

Table 1. Leg setation and solenidia of Machadobelba shtanchaevae sp. nov.*

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

Character M. shtanchaevae sp. n. M. symmetrica M. ceylonica

Length of body 531–597 404–461 367.5Width of body 282–315 220–230 196

CostulaeShorter than half length of Longer than half length of Shorter than half length of

prodorsum prodorsum prodorsumCristae Well developed Well developed Weakly developedNotogastral setae Short Long ShortPosition of adanal

Removed from anal plates Removed from anal plates Adjacent to anal platessetae ad3

Table 2. Morphological traits distinguishing Machadobelba shtanchaevae sp. nov. from two similar species.*

* Data for Machadobelba symmetrica from Balogh (1958, 1959), Balogh and Balogh (2002); data for Machadobelba ceylonica from Balogh(1970), Balogh and Balogh (2002). Measurements of body – in micrometers.


long stalk and short, barbed head. Centrodorsal part ofnotogaster with well developed pair of long longitudinalribs and with two short and one long pair of transver-sal ribs, forming eight concave fields between ribs. Tenpairs of notogastral setae, approximately of equallength, 32–36. Two pairs of adanal setae.

Measurements. Body length 398 (all 398), length ofnotogaster 298 (282, 298, 282), width of notogaster 265(257, 265, 265).

Integument. Body color red-brown. Surface of bodywith irregular rugae and granules. Rugae oblong,sometimes strongly branched. Granules small, up to 2μm in diameter, oval dorsally and granules longer, upto 8 μm in length, elongated laterally.

Prodorsum and lateral part of body (Figs 20, 22, 23).Prodorsum convex medially. Rostrum positioned dis-tinctly ventral to rest of prodorsum. Rostrum conical,oblong (Fig. 23). Lamellae wide, located laterally, withlong, triangular inner cusps. Sublamellae weakly developed. Basal part of prodorsumin the interbothridial region with four tubercles. Ros-tral setae 24 (all 24) in length, setiform, thin, smooth.Lamellar and interlamellar setae longer than rostralsetae, approximately equal in length, 53 (53, 53, 49),setiform, smooth, located on apophyses (Fig. 25).Lamellar setae slightly thicker than interlamellarsetae. Sensilli 82 (82, 86, 82) in length, with long stalkand short, barbed head (Fig. 26). Bothridia funnel-shaped, opening laterally.Exobothridial setae 36 (all32), very thin, smooth. Pedotecta 1 large, rounded, discidium triangular.

Notogaster (Figs. 20, 22, 24). Wide in dorsal view.Centrodorsal part with well developed pair of long lon-gitudinal chitinous ribs and with two short and onelong pair of transverse ribs. Eight notogastral concavi-ties visible between ribs. Ten pairs of notogastral setaeapproximately equal in length, 36 (32, 36, 36), setiform,slightly curved, smooth, located on apophyses (Fig. 27).Lyrifissures (ia, im, ih, ips, ip) and opisthosomalgland opening (gla) not observed.

Anogenital region (Fig. 21). All anogenital setaesetiform, smooth. Two pairs of adanal setae, 16 (16, 20,16) in length; anal and aggenital setae shorter, ofapproximately equal length, 12 (all 12) (Fig. 28); 5 pairsof genital setae, 4 pairs short, 8 (all 8) in length, ante-rior pair longer, 24 (all 24). Lyrifissures iad well devel-oped near to anal plates.

Epimeral region (Fig. 21). Apodemes and epimeralborders well developed. Epimeral setae of approxi-mately equal length, 12 (all 12), thin, smooth. Setae 4blocated on well developed tubercles.

Gnathosoma (Figs 29–31). Subcapitulum (Fig. 29)longer than wide, 94 × 53. Subcapitular mentum widerthan long (length of mentum 45). Hypostomal setaesetiform, smooth; setae h and a equal in length (16),setae m slightly shorter (12). Adoral setae absent.Palps (length 65) with setation 0–2–1–3–9(+1ω). All setae smooth. Palpal solenidion ω pressed to sur-face of tarsus (Fig. 30). Chelicera pelopsiform (length77), with few small blunt teeth on fixed and movabledigits. Cheliceral setae long, setiform, barbed; cha (36)longer than chb (20) (Fig. 31).

Legs (Figs. 32–35). Formula of leg setation andsolenidia: I (1–4–3–4–18) [1–2–2], II (1–4–3–4–15)[1–1–2], III (2–3–2–3–15) [1–1–0], IV (1–2–3–3–12)[0–1–0]; homology of setae and solenidia indicated inTable 3. Many setae barbed. Famulus not observed. Allsolenidia free, blunt-ended. Solenidia ϕ2 on tibiae Ialways strongly curved.

Type material. Holotype (female), paratypes (fourfemales). Specimens were obtained from: Africa,Ethiopia, 6°38’N, 39°43’E, 1883 m above sea level, BaleMountains National Park, Harenna Forest, in soil, col-lected by L.B. Rybalov, 23.11.2009.

The holotype is deposited in the collection of theZoological Institute of the Russian Academy of Sci-ences, St. Petersburg, Russia; first, second, thirdparatypes ibid; fourth paratype is in the personal col-lection of the first author.

Etymology. The species is named in honor of Dr.Alex A. Khaustov, the acarologist from Ukraine (NikitaBotanical Gardens – National Scientific Center, Yalta,Crimea).

Differential diagnosis. Microtegeus khaustovisp. nov. is most similar to Microtegeus variabilisMahunka, 1988 (Distribution: Africa, Tanzania), butdiffers from this species by body size, number ofprodorsal tubercles, length of notogastral setae c, andthe morphology of the notogaster. The new species isalso similar to Microtegeus rugosus Mahunka, 1982(Africa, Ethiopia), but differs by body width, morpholo-gy of lamellar setae, the number of prodorsal tuber-cles, and the morphology of the notogaster. Distinctive

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), (pl), v’, ω1, ω2 (e not observed)II v’ d, (l), bv” (l), v’, σ (l), (v), ϕ (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2

III l’, v’ d, l’, ev’ l’, v’, σ l’, (v), ϕ (ft), (tc), (it), (p), (u), (a), s, (pv)IV v’ d, ev’ d, l’, v’ l’, (v), ϕ ft”, (tc), (p), (u), (a), s, (pv)

Table 3. Leg setation and solenidia of Microtegeus khaustovi sp. nov.*

* Designations as in Table 1.

characters of the three species are presented in theTable 4.

Distribution. At present, this species is onlyknown from type locality, Ethiopia.

ACKNOWLEDGEMENTS

The authors are very grateful to Dr. Valerie Behan-Pelletier (Systematic Entomology, Agriculture andAgri-Food Canada, K.W. Neatby Building, Ottawa,Canada) for thorough review of this manuscript andmany valuable suggestions. The authors are also grate-ful to Prof. Dr. Roy A. Norton (State University of NewYork, College of Environmental Science and Forestry,Syracuse, USA) and Edit Horváth (Hungarian NaturalHistory Museum, Hungary) for help with collecting literature.

REFERENCES

Balogh, J. 1958. Oribatides nouvelles de l’Afrique tropicale.Revue de zoologie et de botanique africaines, 58: 1–34.

Balogh, J. 1959. Some oribatid mites from Eastern Africa(Acari: Oribatidae). Acta zoologica Academiae Scien-tiarum Hungaricae, 5(1–2): 13–32.

Balogh, J. 1970. New oribatids from Ceylon. Opuscula Zoolo-gica Budapest, 10(1): 33–67.

Balogh, J. and P. Balogh. 1992. The oribatid mites genera ofthe world. V. 1. Hungarian National Museum press, 263 pp.

Balogh, J. and P. Balogh. 2002. Identification keys to the orib-atid mites of the Extra-Holarctic regions. V. 1. Publisher:Well-Press Publishing Limited, 453 pp.

Berlese, A. 1916. Centuria prima di Acari nuovi. Redia, 12:19–67.

Mahunka, S. 1982. Oribatids from the Eastern Part of theEthiopian Region (Acari) I. Acta zoologica Academiae Scientiarum Hungaricae, 28(3–4): 293–336.

Mahunka, S. 1988. The Oribatid fauna of Tanzania (Acari) I.Acta Zoologica Hungarica, 34(4): 345–378.

Sanyal, A. K., Saha, S. and S. Chakraborty. 2005. A newspecies of the genus Machadobelba (Acarina: Oribatida:Machadobelbidae). Zoos’ Print Journal, 20(5): 1856–1858.

Subías, L. S. 2004. Listado sistemático, sinonímico y biogeo-gráfico de los ácaros oribátidos (Acariformes: Oribatida)del mundo (excepto fosiles). Graellsia, 60. (número extra-ordinario): 3–305. Actualized en abril de 2009, 547 pp.http://www.ucm.es/info/zoo/Artropodos/Catalogo.pdf.


Character M. khaustovi n. sp M. variabilis M. rugosus

Length of body 398 320–329 384–404Width of body 282–298 232–244 248–270Lamellar setae Smooth Smooth BarbedProdorsum basally With four tubercles With two tubercles With five tubercles

Notogastral setae c Subequal in length with other Shorter than other Subequal in length with other notogastral setae notogastral setae notogastral setae

Notogastral Longer than the half length Longer than the half length Shorter than the half length longitudinal ribs of notogaster of notogaster of notogasterNumber of transverse ribs in centrodorsal Two short and one long Three short ribs Weakly developedof notogaster

Notogastral field Subdivided into eight large Subdivided into six large Weakly expressedconcave fields polygonal fields

Table 4. Morphological traits distinguishing Microtegeus khaustovi sp. nov. from two similar species.*

* Data for Microtegeus variabilis from Mahunka (1988), Balogh and Balogh (2002); data for Microtegeus rugosus from Mahunka (1982), Baloghand Balogh (2002). Measurements of body – in micrometers.

Received: May 11, 2010Accepted: August 30, 2010


Figures 1–4. Machadobelba shtanchaevae sp. nov. (1) dorsal view, legs partly removed; (2) ventral view, legs partly removed; (3) lateral view, gnathosoma and legs removed; (4) anterior part of prodorsum, dorsal view, from dissected specimen. Scale bar (1–3) 200 μm, scale

bar (4) 20 μm.

1 2

3

4


Figures 5–15. (5–11) Machadobelba shtanchaevae sp. nov., setae: (5) rostral seta; (6) interlamellar seta, (7) exobothridial seta; (8) sensillus; (9) notogastral seta lp; (10) genital seta g3; (11) epimeral seta 4b. Scale bar 20 μm, the following groups to same scale (5–7, 9–11), scale bar (8) 50 μm; (12) Machadobelba shtanchaevae sp. nov., ovipositor. Scale bar 50 μm; (13–15) Machadobelba shtanchaevae sp. nov., gnathosoma:

(13) subcapitulum; (14) palp; (15) chelicera. Scale bar 50 μm.

5

6

7

89

10

11

12


Figures 16–19. Machadobelba shtanchaevae sp. n., segments of legs: 16 – leg I, right, antiaxial view, 17 – leg II, without trochanter, left, antiaxial view, 18 – leg III, left, paraxial view, 19 – leg IV, right, paraxial view. Scale bar 50 μm.

16 17 18 19


Figures 20–23. Microtegeus khaustovi sp. nov.: (20) dorsal view, legs removed; (21) ventral view, gnathosoma and legs partly removed; (22) lateral view, gnathosoma and legs removed; (23) anterior part of prodorsum, dorsal view. Scale bar (20–22) 100 μm, scale bar

(23) 50 μm.

21 22

2324


Figures 24–31. (24) Microtegeus khaustovi sp. nov., notogaster, anterior view. Scale bar 50 μm; (25–28) Microtegeus khaustovi sp. nov, setae:(25) lamellar seta; (26) sensillus; (27) notogastral seta lm; (28) anal seta an1. Scale bar 20 μm; (29–31) Microtegeus khaustovi sp. nov.,

gnathosoma: (29) part of subcapitulum; (30) palp; (31) chelicera. Scale bar 20 μm.

24

25 26

27

28

29

30

31


Figures 32–35. Microtegeus khaustovi sp. nov., segments of legs: (32) leg I, left, paraxial view; (33) leg II, right, antiaxial view; (34) leg III, right, antiaxial view; (35) leg IV, without trochanter and femur, right, antiaxial view. Scale bar 50 μm.

32 33 34

35

two new species of oribatid mites (acari: oribatida) from ethiopia

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