Zootaxa 1914: 65–68 (2008) www.mapress.com / zootaxa/
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ZOOTAXA ISSN 1175-5334 (online edition)
A new species of Linotetranus (Acari : Prostigmata: Linotetranidae) from Iran MOHAMMAD BAGHERI1, KARIM HADDAD IRANI-NEJAD2, KARIM KAMALI3, MOHAMMAD KHANJANI4, ALIREZA SABOORI5 & PARISA LOTFOLLAHI2 1
Department of Plant Protection, Faculty of Agriculture, University of Maragheh, Maragheh, Iran. E-mail:
[email protected] 2 Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran. E-mail:
[email protected],
[email protected] 3 Department of Agricultural Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran 4 Department of Plant Protection, Faculty of Agriculture, University of Bu-Ali Sina, Hamadan, Iran. E-mail:
[email protected] 5 Department of Plant Protection, Faculty of Agriculture, University of Tehran, Karaj, Iran. E-mail:
[email protected]
Mites of the family Linotetranidae (Acari: Prostigmata) are unique among the tetranychoid families in that eyes are absent (Meyer & Ueckermann, 1997). They are usually colourless, slender and less than a third of a millimeter in length, and occur mostly in soil. Linotetranids have been reported from moss, soil and rotting trees, but most collection indicate an association with the crown and roots of grass or sedge in dryland habitats (Beard & Walter, 2004). Up to now eight species of the genus Linotetranus have been described in the world. In this paper we describe and illustrate a new species. The terminology and abbreviations follow Lindquist (1985) and all measurements are given in micrometers.
Key to the species of Linotetranus Berlese, 1910 (Females) 1 2 3 4 5 6 7 8 -
Setae e4 on caudal area absent ...............................................................................L. achrous Baker & Pritchard, 1953 Setae e4 on caudal area present ..................................................................................................................................... 2 With 2 pairs of genital setae.......................................................................... L. ramosus Meyer & Ueckermann, 1997 With 3 pairs of genital setae......................................................................................................................................... 3 Dorsal caudal area with transverse striae ............................................................ L. protractulus Athias-Henriot, 1961 Dorsal caudal area smooth or with irregular striae ...................................................................................................... 4 Palptibia with 1 seta ..................................................................................................................................................... 5 Palptibia with 2 setae ................................................................................................................................................... 6 Palpgenu with 1 seta .........................................................................................................L. cylindricus Berlese, 1910 Palpgenu with 2 setae................................................................................... L. amiculus Meyer & Ueckermann, 1997 Genu I with 4 setae................................................................................. L. edenvillensis Meyer & Ueckermann, 1997 Genu I with 5 setae....................................................................................................................................................... 7 Dorsal setae d3 shorter than distance between d3 and e3 ............................................................ L. mirabebensis Andre Dorsal setae d3 longer than distance between d3 and e3 ................................................................................................ 8 Palpgenu without setae; dorsal setae h2< twice length of seta h1 ...................... L. annae Meyer & Ueckermann, 1997 Palpgenu with 1 seta; dorsal setae h2> twice the length of seta h1 ................L. niknami Bagheri & Haddad, sp. nov.
Family Linotetranidae Baker and Pritchard, 1953 Type genus: Linotetranus Berlese,1910 Genus Linotetranus Berlese, 1910 Type species: Linotetranus cylindricus Berlese, 1910
Accepted by Q.H. Fan: 8 Oct. 2008; published: 24 Oct. 2008
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Diagnosis. Members of Linotetranus can be separated from those of other genera (Afrolinotus, Anoplopalpus and Australinus) by the following features: palpus five-segmented, palptarsus with six phaners; palptibia with a strong claw, forming a thumb-claw complex, also bearing 1 or 2 setae dorsodistally; palpgenu with or without setae; femur with 1 seta and trochanter globrous; coxae I each with two setae and opisthosomal dorsum with 17 or 18 pairs of setae, dorsal setae d1, e1 and f1 present, tibiae II and IV with 4 setae; tarsi without forked setae.
Linotetranus niknami Bagheri & Haddad sp. nov. (Figs. 1–8) Female (n=3): Measurements of holotype (paratypes in parantheses): Length of body (including gnathosoma) 390 (397, 420), Length of body (excluding gnathosoma) 315 (335, 352), width 142 (145, 150), length of leg I 165 (165, 180), leg II 112 (120, 120), leg III 97 (97, 97), leg IV 97 (97, 97). Dorsum (Fig.1). Integument reticulate- areolated, mostly covered by elongate elements, but caudal part smooth; body setae linear and mostly setose; prodorsal setae vi (fig. 2) pinnate; length of setae: prodorsal setae vi 15 (15, 15) ; ve 50 (50, 56) ; sci 93 (82, 93) ; sce 105 (105, 102) ; opisthosomal setae c1 33 (39, 36); c2 90 (102, 99); c3 95 (93, 94); c4 103 (104, 104); d1 56 (57, 51); d2 99 (93, 93); d3 106 (102, 105); e1 16 (15, 15); e2 54 ( 63, 66 ); e3 99 (105, 111); e4 68 (66, 75); f1 20 (15, 21); f2 33 (30, 31); f3 153 (170, 170); h1 99 (93, 87); h2 211 (201, 207); h3 86 (81, 84); h4 78 (72, 75).
FIGURES 1–3. Linotetranus niknami Bagheri & Haddad, sp. nov. (Female ). 1. Dorsal view of idiosoma; 2. Prodorsal seta vi; 3. Ventral view of idiosoma. Venter (fig. 3). The ventral sculpturing consist of elongate ornamentations; intercoxal setae IC2 about three quarters length of IC1; IC3 and IC4 about equal in length and about half length of IC1 ; pregenital shield more or less trapezoidal,
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with aggenital setae ag1 on middle part; setae ag2 situated on integument, laterad of genital aperture; three pairs of genital setae (g1- 3) present, g2-3 half length of g1; three pairs of pseudanal setae (ps1-ps3) present, ps2 and ps3 about equal in length and about half length of ps1. Gnathosoma: Rostrum extending to about proximal half of genu I; palpus (fig. 4) five-segmented, with the following complement of setiform structures: tarsus with 4 eupathidia and 2 setae; tibia with a dorsal claw and 2 setae; genu and femur each with 1 seta, trochanter glabrous. Legs (figs. 5–8). Setae and solenidia (in parantheses) as follows: coxae 2 + supercoxal seta, e – 1-1-1; trochanters 11-1-0; femora 5-3-2-1; genua 5- 2-1-0; tibiae 5(1)-4-3-4; tarsi 11(2)-7(1)-4-4.
FIGURES 4–8. Linotetranus niknami Bagheri & Haddad, sp. nov. (Female ). 4. Palp; 5. Leg I; 6. Leg II; 7. Leg III; 8. Leg IV. Male and immature stages: Unknown. Type materials : Holotype female and one of the paratypes from the soil of wheat fields, 14 June 2002, were collected by the senior author and one paratype female from the soil of alfalfa field, 7 June 2004 was collected by P. Lotfollahi, Marand, East Azarbaijan Province, Iran. The holotype and one paratype will be deposited in British Museum, London, United Kingdom and one paratype in the Acarological Collection, Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran. Remarks: This species resembles L. amiculus Meyer & Ueckermann, 1997 in that the dorsal integument pattern is mostly reticulated. However, it differs in that the palpgenu bears 1 seta versus without seta on palpgenu in L. amiculus; tibiae III bears 3 setae versus 4 setae on tibiae III of L. amiculus. Etymology: This species is named in honour of Dr. Golam-Reza Niknam, the former head of Department of Plant Protection, University of Tabriz, for his kind help in supporting this project.
A NEW SPECIES OF LINOTETRANUS
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Acknowledgments This project was supported by research division of the Tabriz University, Iran, which is greatly appreciated. We also would like to express our appreciation to Dr. E.A.Ueckermann (ARC-Plant Protection Research Institute, Pretoria, South Africa) and to Dr. D. E. Walter, (University of Queensland, Australia) for helping with the literatures.
References Athias-Henriot, C. (1961) Nouveaux acariens phytophages d’Algérie (Actinotrichida, Tetranychoidea: Tetranychidae, Linotetranidae). Annals de l’ Ecole Nattionale d’Agriculture d’Alger, 3(3), 1–10. Baker, E.W. & Pritchard, A.E. (1953) The family category of tetranychoid mites, with review of the new families Linotetranidae and Tuckerellidae. Annals of the Entomological Society of America, 46(2), 243–258. Beard, J.J. & Walter, D.E. (2004) Cryptic false spider mites: a new genus, Austrolinus and a review of the family Linotetranidae (Acari: Prostigmata: Tetranychoidea ). Invertebrate Systematics, 18, 593–606. Berlese, A. (1910) Acari nuovi-Manipulus V. Redia, 6,199–234. Lindquist, E.E. (1985) Anatomy, phylogeny and systematics. 1.1.3. Diagnosis and phylogenetic relationships. In: Hell, W. & Sabelis M.W. (eds.), World Crop Pest, Vol. 1A. Spider mites, their biology, natural enemies and control. Amesterdam, Elsevier, pp. 63–74. Meyer, M.K.P. (Smith) & Ueckermann, E.A. (1997) A review of the some species of the families Allochaetophoridae, Linotetranidae and Tuckerellidae (Acari: Tetranychoidea). International Journal of Acarology, 23(2), 67–92.
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