taxonID	type	description	language	source
7308276D0A03675DFD8941E8FBCD2B7B.taxon	type_taxon	Type species: Microtrombidium (Enemothrombium) fusicomum Berlese, 1910, by original designation. Definitionof larva (based on Gabryś et al. (2005) with modifications) Gnathosoma with stephanostome and internal horseshoe-like sclerite bearing prominent lateral teeth, tritorostral (bs) setae distally with finger-like projections; palpal femur and genu each with one minute seta (spine-like); dorsal scutum of idiosoma with stolascutum bearing three pairs of peripheral setae plus one pair of trichobothria; scutellum with two c 1 setae; scutum with longitudinal striations visible in central, posterior and posterolateral parts, scutellum with longitudinal striations, c 2 plates slightly enlarged, oval in shape, d 1 plates much larger than c 2 and almost round; coxal setal formula: 2 - 1 - 1; setae on coxa I smooth or bifid, setae on coxae II and III with 3 – 4 small setules; tarsal claws: 3 – 3 – 3; tarsus III with a modified inner claw (smilum), and a trifid outer claw; scopa and lophotrix with few setules, lophotrix smaller than smilum in length.	en	Hakimitabar, Masoud, Saboori, Alireza (2024): Notes on Atractothrombium and Fissitrombium (Acari: Trombidiformes: Microtrombidiidae) with description of a new species of Atractothrombium from Iran. Persian Journal of Acarology 13: 409-425, DOI: 10.22073/pja.v13i3.85383
7308276D0A036752FE424201FEE72912.taxon	diagnosis	Diagnosis SD 168 – 178, W 154 – 166, h 2 / h 1 setae (1.22 – 1.29), length of solenidia on Ge I – III less than 50, hypostomal setae (bs) with 7 – 8 finger-like protrusions distally, AL and PL setae barbed, solenidia on Ge I – III less than 50 and Cx formula: NB – B – B. Description (n = 4) Dorsum – Dorsal surface of idiosoma with a scutum, a scutellum and 26 (+ 2) barbed setae, each arising from a smooth sclerite except c 1 setae. There is a cuticular line at the base of each seta; setae c 2 and d 1 with larger sclerite than other hysterosomal setae, c 2 plates slightly enlarged and oval, d 1 plates larger than c 2 plates and oval (Fig. 1). Dorsal idiosomal setal formula: c 1 – 3, d 1 – 3, e 1 – 3, f 1 – 3, h 1 – 2 (6 - 6 - 6 - 6 - 4). Scutum rounded anteriorly and completely deflexed; lateral borders convex near AL bases and concave between AL and PL; and slightly convex at the posterior border; anterolateral angles rounded, bent ventrally (stolascutum-type) (Figs. 1, 2); scutum punctate and conspicuously with longitudinal striae (Fig. 2); bearing three pairs of setae (AM, AL and PL) and one pair of trichobothria (S). AM (30 – 39) filiform and nude, AL (25 – 33) and PL (50 – 55), both slightly thicker than AM and barbed. S filiform and smooth. Boat-shaped scutellum posterior to scutum and wider than long, with striation and punctation (Fig. 2) and two barbed setae on posterior half, with straight anterior and lateral borders, posterior one convex. Ocular sclerites striated, 27 long and 10 wide, situated in the concavity of lateral borders of scutum; with two lenses, anterior 7, and posterior 4 in diameter (Figs. 1, 2).	en	Hakimitabar, Masoud, Saboori, Alireza (2024): Notes on Atractothrombium and Fissitrombium (Acari: Trombidiformes: Microtrombidiidae) with description of a new species of Atractothrombium from Iran. Persian Journal of Acarology 13: 409-425, DOI: 10.22073/pja.v13i3.85383
7308276D0A036752FE424201FEE72912.taxon	description	Venter – Ventral surface of idiosoma with one pair of nude intercoxal setae (3 a), 2 pairs of ventral setae located on smooth sclerites and an anus. All setae on ventral idiosoma with distinct barbs. Coxa I with nude proximal seta 1 a; antero-median setulose seta 1 b. Coxa II and III with setulose setae 2 b and 3 b respectively (Fig. 3). Claparède's organs between coxae I and II, oval, distinctly elevated, 12 in diameter. NDV = 26 (+ 2) + 4 = 30 (+ 2). Gnathosoma – Gnathosoma with a pair of adoral setae (cs) nude. One pair of hypostomal setae (bs) short and thick, with 8 blunt digitations distally. Cheliceral base 82 – 92 long; cheliceral blade 25 – 27 long, curved with two minute subterminal teeth. Sclerotized oral ring (stephanostome) not closed dorsally, with large denticled membranes (more than 30 teeth) outside it, and small denticles inside it. Palpal femur and genu each with 1 small spine-like seta. Tibia with 3 nude setae of which 1 long and 1 shorter and the other one spine-like (Fig. 4); palpal tibial claw bifid. Palpal tarsus with 5 nude setae and a solenidion (8 – 9) and an eupathidium (18 – 19). fPp = 0 - N-N-NNN 2 - 5 Nωζ. Leg segmentation formula – 6 – 6 – 6. Leg setal formula: Leg I: Tr – 1 n; Fe – 6 n; Ge – 20, 1 κ, 4 n; Ti – 2 φ, 1 κ, 6 n; Ta – 1 ω, Ιε, 2 ζ, 18 n (Figs. 5 – 6). Leg II: Tr – 1 n; Fe – 5 n; Ge – Ι 0, Ικ, 2 n; Ti – 2 φ, 5 n; Ta – Ιω, Ιε, Ιζ, 14 n (Figs. 7 – 8). Leg III: Tr – 1 n; Fe – 4 n; Ge – 10, 2 n; Ti – 5 n; Ta – 13 n (Figs. 9 – 10). Tarsi I and II with two trifid falciform claws and a slender claw-like empodium; Ta III deformed with a modified inner claw (smilum), a trifid outer claw and a long and slender empodium; scopa with few setules, and lophotrix with 6 setules. Measurements are given in Table 2. Type material and deposition The holotype (ARS ‒ 20221025 ‒ 1 a) and three paratype (ARS ‒ 20221025 ‒ 1 b to 1 d) larvae were collected by M. Hakimitabar and O. Joharchi, 23 July 2009, near the Velayat river, Dizin region, Chalous road, Karaj city, Alborz province, Iran (36 ° 3.085 ' N, 51 ° 24.925 ' E, 2665 m a. s. l.), ectoparasitic on an undetermined Tachinidae (Insecta: Dip.) (paratypes 1 b and 1 d) or off host (holotype and paratype 1 c). The holotype and paratypes (ARS ‒ 20220208 ‒ 1 b to 1 d) are deposited in the Acarological Collection, Jalal Afshar Zoological Museum, Faculty of Agriculture, University of Tehran, Karaj, Iran. Etymology The species is named in honor of Dr. Omid Joharchi (Johann-Friedrich-Blumenbach Institute of Zoology and Anthropology, Germany), a famous Iranian acarologist, for his great contribution to the taxonomy of Mesostigmata especially the family Laelapidae in Iran and other countries. Remarks There are 14 species of Atractothrombium, of which four species (see discussion) are based on larvae [L] or post-larval stages and larvae [P, L] as follows: A. sylvaticum (C. L. Koch, 1835) [P, L]) from Austria, France, Germany, Hungary, Ireland, Italy, Norway, Poland, Romania, Switzerland, The Netherlands, and Türkiye; A. tectocervix (Oudemans, 1903) [L] from Germany; A. amirkabiri Noei, Saboori & Hajizadeh, 2015 [L] from Iran and A. brevisetosum Karakurt & Sevsay, 2015 from Türkiye (Southcott 1994; Gabryś et al. 2005; Mąkol and Wohltmann 2012; Adil and Sevsay 2014; Noei et al. 2015; Karakurt and Sevsay 2015). Atractothrombium joharchii sp. nov. differs from A. tectocervix in a stout conical seta at the end of Ta III (absent vs. present) (there is not enough information on this species for further comparisons); from A. sylvaticum in the normal setae on Ta I (18 vs. 17), Ta II (14 vs. 13), Ta III (13 vs. 12), shorter h 2 / h 1 setae (1.22 – 1.29 vs. ~ 2) and SD / W (1.01 – 1.12 vs. 1.56 – 1.90), from A. amirkabiri in the longer SD (168 – 178 vs. 126 – 141), W (154 – 166 vs. 121 – 131), AL (25 – 30 vs. 12 – 20), shorter solenidia on Ge I – III (less than 50 vs. more than 100) and seta 1 a (nude vs. barbed), and differs from A. brevisetosum in the normal setae on Ta II (14 vs. 13), Ta III (13 vs. 11) and shorter SD / W (1.01 – 1.12 vs. 1.67 – 1.91), longer h 2 (76 – 84 vs. 31 – 39) and h 1 (62 – 65 vs. 30 – 37), DS Max (62 – 69 vs. 33 – 40), 1 a (28 – 34 vs. 16 – 22), AM / AL (1.06 – 1.48 vs. more than 2 times) and AL setae (barbed vs. nude).	en	Hakimitabar, Masoud, Saboori, Alireza (2024): Notes on Atractothrombium and Fissitrombium (Acari: Trombidiformes: Microtrombidiidae) with description of a new species of Atractothrombium from Iran. Persian Journal of Acarology 13: 409-425, DOI: 10.22073/pja.v13i3.85383
7308276D0A0D6753FD9B435BFB782AB7.taxon	distribution	Distribution – Australia Specimens examined – ACB 1262 A (lectotype) and ACB 1262 B (paralectotype). Leg setal formula (corrected data) – Leg I: Ta – 1 ω, 1 ε, 2 ζ, 17 n; Ti – 2 φ, 1 κ, 6 n; Ge – 2 σ, 1 κ, 4 n; Fe – 6 n; Tr – 1 n; Cx – 2 n. Leg II: Ta – 1 ω, 1 ε, 1 ζ, 14 n; Ti – 2 φ, 5 n; Ge – 1 σ, 1 κ, 2 n; Fe – 5 n; Tr – 1 n; Cx – 1 n. Leg III: Ta – 13 n; Ti – 5 n; Ge – 1 σ, 2 n; Fe – 4 n; Tr – 1 n; Cx – 1 n.	en	Hakimitabar, Masoud, Saboori, Alireza (2024): Notes on Atractothrombium and Fissitrombium (Acari: Trombidiformes: Microtrombidiidae) with description of a new species of Atractothrombium from Iran. Persian Journal of Acarology 13: 409-425, DOI: 10.22073/pja.v13i3.85383
7308276D0A0D6753FDB14275FB60246C.taxon	distribution	Distribution – Australia Specimens examined – ACB 1264 (holotype) Leg setae formula (corrected data) – Leg I: Ta – 1 ω, 1 ε, 2 ζ, 17 n; Ti – 2 φ, 1 κ, 6 n; Ge – 3 σ, 1 κ, 3 n; Fe – 6 n; Tr – 1 n; Cx – 2 n. Leg II: Ta – 1 ω, 1 ε, 1 ζ, 14 n; Ti – 2 φ, 5 n; Ge – 2 σ, 1 κ, 2 n; Fe – 5 n; Tr – 1 n; Cx – 1 n. Leg III: Ta – 13 n; Ti – 5 n; Ge – 2 σ, 2 n; Fe – 4 n; Tr – 1 n; Cx – 1 n.	en	Hakimitabar, Masoud, Saboori, Alireza (2024): Notes on Atractothrombium and Fissitrombium (Acari: Trombidiformes: Microtrombidiidae) with description of a new species of Atractothrombium from Iran. Persian Journal of Acarology 13: 409-425, DOI: 10.22073/pja.v13i3.85383
