A new species of Proctotydaeus Berlese (Tydeoidea: Iolinidae) from Iran Author Darbemamieh, Maryam . Department of Plant Protection, Faculty of Agricultural Science and Engineering, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran; E-mail: m. darbemamieh @ razi. ac. ir m.darbemamieh@razi.ac.ir Author Ahadiyat, Ali . Department of Plant Protection, Science and Research Branch, Islamic Azad University, Tehran, Iran; E-mails: a. ahadiyat @ srbiau. ac. ir, v. r. farmahiny @ gmail. com Author Farmahiny-Farahani, Vahid Reza . Department of Plant Protection, Science and Research Branch, Islamic Azad University, Tehran, Iran; E-mails: a. ahadiyat @ srbiau. ac. ir, v. r. farmahiny @ gmail. com Author Kaźmierski, Andrzej . Department of Animal Morphology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland; E-mail: akazmierski @ tlen. pl akazmierski@tlen.pl text Persian Journal of Acarology 2022 2022-01-15 11 1 23 34 journal article 10.22073/pja.v11i1.72954 2251-8169 7173465 6604E252-7339-4264-9C24-B15252A4E455 Proctotydaeus ( Proctotydulus ) hajiqanbari Darbemamieh, Ahadiyat & Farmahiny-Farahani sp. nov. ( Figs. 1–4 ) http://zoobank.org/ urn:lsid:zoobank.org:act: 1707098B-EF8E-4B3F-ABC0-A8F570E4131E Description Idiosoma – Holotype female ( Fig. 1 ): length 257, width 125. Paratype deutonymph ( Figs. 3D, E, F , 4 ): length146, width 98. Dorsum ( Fig. 1 ) – Prodorsum procurved. Aspidosomal chaetotaxy- 4: ro (situated posteriad line la-la ), la , ex , bo (bothridial setae); setae bo whip-like and finely serrate. Sejugal furrow well developed. No eyes. Ten pairs of hysterosomal setae. Hysterosomal chaetotaxy: cl , c2 , dl , el , f1 , f2 , h1 , h2 , ps1 , ps2 and ps3 (on ventral side). Dorsal setae weakly barbed or serrate. Dorsal hysterosomal setae short with exception of f2 , h2 and ps2 which visibly longer than others, finely serrate, with exception of nude ps3. ro ˃ la ; c1 and d1 short, c1 four times shorter than c1-d1 distance. Setae ps1 situated terminally, ps2 lateroventrally, and ps3 set on anal valves ventrally. Poroidotaxy: four pairs of lyrifissures: ia , im , ip , ih . Dorsal idiosoma narrowly striated. Dorsal ornamentation consists of longitudinal stria on aspidosoma and central part of hysterosoma to level of dl-dl and changes to “V” shape between dl-dl and e1-e1 . Posterior part of opisthosoma covered by transverse stria from im to posterior margin. Adult and deutonymph have caudal part or pygidium at the end of opisthosoma. Length of setae ( bo ˃ ex ˃ ro ˃ la ; Fig. 3A ): bo : 34, ro : 12, la : 9, ex : 29, c1 : 11, c2 : 12, dl : 13, e1 : 17, f1 : 18, f2 : 42, h1 : 16, h2 : 34, ps1 : 14, ps2 : 25, ps3 : 6. Distances between setae: c1-c1 : 41, d1-d1 : 29, e1-e1 : 57, f1-f1 :25, h1-h1 : 26, f2-f2 : 63, h2-h2 : 46 c1-dl : 79, d1-e1 : 45. Venter ( Fig. 2 ) – Ornamentation finely striated; more lines in comparison with dorsum, ventral setae shorter and more delicate, all serrate; stria longitudinal between pt , mtα , mtss and ag1 . Transverse stria in area between pairs of pt and mtα setae. Striae are longitudinal in ventral part but become transverse between legs II and III that form an eye shape. Length of ventral setae: pt : 120, mtα : 10, mtss : 9, ag1 : 8, ag2 : 7, ag3 : 6, ag4 : 10. One pair of genital acetabula, four pairs of aggenital setae. Epimeral formula (3-1-4-2). Legs ( Figs. 3B, C ) – Tarsal setae serrate; Genua Ill and IV and femur IV each with very small delicate apophysis situated in dorso-paraxial position and hardly visible. Leg chaetotaxy of adult as follows (tarsus—trochanter): Legs I (8+ ω –3 + k + φ –3–3–1), II (7 + ω –2–3–3–1), III (7–2–2–2–1), IV (7–2–1– (1–1) –0). Figures 1–2. Proctotydaeus ( Proctotydulus ) hajiqanbari Darbemamieh, Ahadiyat & Farmahiny-Farahani sp. nov. (female) – 1. Dorsal view of idiosoma; 2. Ventral view of body. Lengths of legs: leg I (157–158); leg II (104–105); leg III (119–120) and leg IV (111–112). Tarsus I ( Fig. 3B ) (14/7); solenidion ω1 short and less than half of tarsal width; length of ωI 3; length of tc’ζ 20; tc’’ζ 28; length of seta k 2. Other legs each with two claws ( ol ) and ciliate empodium. Empodial hooks absent. Tarsus II (21/7) (length to base of apotele) ( Fig. 3C ) with minute, spherical, scarcely visible solenidion ωII (1). Gnathosoma ( Figs. 3D, E, F ) – Width: 40, total length without palp: 50 ( Fig. 3F ). Visible from above, subcapitulum triangular reaching distal end of femur I. sc1 (4); sc2 (6) Cheliceral frame fused in great part, stylets shorter than palp tarsus. Cheliceral stylet ( Fig. 3E ): 8. Palpal tarsus ( Fig. 3D ): length 12, width 3. Palp (6-1-2) with a double eupathidia at tip of tarsus. Palpal eupathidium ( pζ ) terminate with straight cleft distally (length 7), ( pζ ), 1" , 1' , d , v , ba (very small), ω . Deutonymph ( Fig. 4 ) – Smaller than female; with dehiscence line on aspidiosoma situated anteriad ro and la . Material examined One female, Shahriyaar, Tehran province , latitude: N 35° 39' , longitude: E 51° 03' , altitude: 997 m a.s.l., gallery of Scolytus amygdali attacking apricot ( Prunus armeniaca Linnaeus, 1753 ), 24 April 2002 , Ali Ahadiyat; one deutonymph, Sharifabad, Tehran province , latitude: N 35° 25' 39" , longitude: E 51° 47' 7" , altitude: 1054 m a.s.l., gallery of Orthotomicus erosus attacking pine tree ( Pinus sp. ), 11 June 2010 , coll. Ali Ahadiyat and Ahmad Valizadeh. Figure 3. Proctotydaeus ( Proctotydulus ) hajiqanbari Darbemamieh, Ahadiyat & Farmahiny-Farahani sp. nov. (female) – A. Aspidiosomal setae; B. Leg I; C. Leg II; D. Pedipalp of deutonymph; E. Cheliceral stylet of deutonymph; F. Gnathosoma of deutonymph. Differential diagnoses This species is morphologically close to Proctotydaeus hypobori Khaustov, 1997 , but it can be distinguished with some characters, including forms of dorsal setae, length of cheliceral stylets, length and the locality of the solenidion ω1 , and the situation of the dorsal transverse furrow. These differential diagnoses are summarized in Table 1 . Figure 4. Proctotydaeus ( Proctotydulus ) hajiqanbari Darbemamieh, Ahadiyat & Farmahiny-Farahani sp. nov. (deutonymph) – Dorsal view of idiosoma. Table 1. Differential morphological characters between Proctotydaeus hypobori and P. hajiqanbari sp. nov. Proctotydaeus hypobori Proctotydaeus hajiqanbari sp. nov. Setae la , h2 and f2 smooth All dorsal setae serrate Setae ft” , tc and p all serrate at one-third of length at Setae ft” , tc and p all serrate at three-fourth of length at basis basis Cheliceral stylets longer (16) than palp tarsus (12) Cheliceral stylets (8) shorter than palptarsus(12) Solenidion ω1 longer (6), reaching the tip of tarsus I Solenidion ω1 shorter (4), not reaching the tip of tarsus I A transverse furrow between setae e1 and f1 No transverse furrow between setae e1 and f1 Etymology The species is named in memory of the late Dr. Hamidreza Hajiqanbar (1973–2021), an eminent Iranian acarologist who contributed significantly to the fauna of insect associated Prostigmata . Type repository Holotype female and paratype deutonymph are deposited at the Acarological Collection , Department of Plant Protection , Razi University , Kermanshah , Iran .