Agistemus duzgunesae Koç, Çobanoğlu & Madanlar

Stathakis, Theodoros I., Kapaxidi, Eleftheria V. & Papadoulis, Georgios Th., 2014, A new record and a new species of the genus Agistemus Summers (Acari: Stigmaeidae) from Greece, Zootaxa 3780 (1), pp. 153-170 : 156-162

publication ID	https://doi.org/ 10.11646/zootaxa.3780.1.6
publication LSID	lsid:zoobank.org:pub:7AD1E7AB-9825-4928-AB3D-5F1D39D337B8
DOI	https://doi.org/10.5281/zenodo.6135369
persistent identifier	https://treatment.plazi.org/id/7B5087E2-FFB9-FFE0-F4D2-9CA6C130FC26
treatment provided by	Plazi
scientific name	Agistemus duzgunesae Koç, Çobanoğlu & Madanlar
status

Treatment

Agistemus duzgunesae Koç et al. 2005: 121 .

Diagnosis. Female. Prodorsal and central hysterosomal shields ornamented with polygonal reticulations, each cell with vacuoles; pob about 2.0 times as large as eye; dorsal idiosomal setae strongly barbed and tapered distally; vi / vi–vi 0.6 (0.5–0.6), c1 / c1–c1 0.7 (0.6–0.8). Aggenital shield divided along midline by a striated area, each side with two setae (ag1, ag2). Coxa IV with one seta; femur I with four setae; genu I with 2+1 κ; tibia IV with four setae; tarsus I with 11+1 ω; tarsus IV with seven setae.

Male. Postocular body 1.5 times as large as eye; vi / vi–vi 0.5 (0.4–0.5), c1 / c1–c1 0.5 (0.4–0.6). Aggenital area with one pair of setae (ag1). Dorsal shields and counts of setae and solenidia as in female except for tarsi I–IV with 11+2 ω, 9+2 ω, 7+1 ω, 7+1 ω.

Female (n = 10).

Dorsum ( Figure 1 View FIGURES 1 – 6 ). Oval, sclerotized; length of body (excluding gnathosoma) 287 (246–337), width 211 (179– 246). Idiosoma covered with seven shields surrounded by fine striae. Prodorsal and central hysterosomal shields ornamented with polygonal reticulations, each cell with vacuoles ( Figure 11 View FIGURES 11 – 12 ). Dorsal setae strongly barbed and tapered distally ( Figure 2 View FIGURES 1 – 6 ). Prodorsal shield with three pairs of setae, vi 18 (16–20), ve 28 (24–32), sci 29 (22–34), one pair of eyes 11 (10–12) in diameter and one pair of postocular bodies (pob) 23 (20–28) in diameter. Central hysterosomal shield entire, bearing five pairs of setae, c1 26 (22–30), d1 26 (22–30), d2 28 (22–32), e1 34 (28–38), e2 34 (28–36). Intercalary shields with setae f1 34 (30–38). Humeral shields with setae c2 29 (24–34) ( Figure 12 View FIGURES 11 – 12 ). Suranal shield with two pairs of setae h1 38 (34–42) and h2 34 (30–38). Distances between setae: vi– vi 32 (30–36), ve–ve 60 (56–64), sci–sci 98 (92–105), vi–ve 24 (22–28), ve–sci 28 (26–30), c1–c1 25 (30–40), d1–d1 63 (58–66), d2–d2 118 (109–123), e1– e1 28 (24–32), e2– e2 87 (80–92), f1–f1 64 (58–70), h1–h1 19 (14–22), h2–h2 57 (50– 68), c1–d1 46 (40–50), c1–d2 50 (44–54), d1–d2 32 (28–36), d1– e1 47 (44–50), d1– e2 32 (28–34), d2– e2 47 (42– 54), e1– e2 33 (30–34), e1–f1 30 (22–36), h1–h2 20 (14–24). Ratios: pob /eye 2.0 (1.8–2.4), vi / vi–vi 0.6 (0.5–0.6), c1 / c1–c1 0.7 (0.6–0.8), d1 / d1–d1 0.4 (0.3–0.5), e1 / e1– e1 1.2 (0.9–1.4), h1 / h2 1.1 (1.0–1.2).

Venter ( Figure 3 View FIGURES 1 – 6 ). Ventral setae subequal, 1a 24 (18–30), 3a 24 (21–28), 4a 22 (20–24). Aggenital shield divided along midline by a striated area, each side with two setae, ag1 18 (14–21) and ag2 24 (21–27). Setae ag1 on small platelets. Anogenital covers with one pair of genital setae, g1 34 (31–37) and three pairs of pseudanal setae, ps1 18 (16–21), ps2 19 (16–20), ps3 17 (14–18) ( Figure 4 View FIGURES 1 – 6 ).

Gnathosoma. Subcapitulum bearing two pairs of adoral setae (ro1, ro2) and two pairs of subcapitular setae, m 21 (19–24) and n 24 (22–25) ( Figure 5 View FIGURES 1 – 6 ). Distances between subcapitular setae: m–m 28 (26–30), n–n 22 (20–24) and m–n 8 (7–10). Movable cheliceral digits 38 (36–40), in length. Palpi five-segmented; palptarsus with a tridentate terminal eupathidium, one subterminal spine-like eupathidium, one solenidion and four smooth setae; palptibia with a large claw, a slender accessory claw and two proximal setae; palpgenu with one smooth seta; palpfemur with two smooth and one strongly barbed setae ( Figure 6 View FIGURES 1 – 6 ).

Legs ( Figures 7–10 View FIGURES 7 – 10 ). Length of legs: legI 179 (159–191), legII 167 (155–191), legIII 179 (163–198), legIV 188 (179–198). Counts of setae and solenidia on legs I–IV: coxae 2+1 elcp, 1, 2, 1; trochanters 1, 1, 1, 1; femora 4, 4, 2, 2; genua 2+1 κ, 0, 0, 0; tibiae 5+1 φp, 5+1 φp, 5+1 φp, 4; tarsi 11+1 ω, 9+1 ω, 7+1 ω, 7. Length of spines and solenidia: κ I 4, ω I 11 (10–12), ω II 10 (8–11), ω III 6 (5–7).

Male (n = 7)

Dorsum ( Figure 13 View FIGURES 13 – 18 ). Oval, sclerotized; length of body (excluding gnathosoma) 257 (206–286), width 178 (151–195). Idiosoma covered with five shields surrounded by fine striae. Prodorsal, central hysterosomal and suranal shields ornamented with polygonal reticulations, each cell with vacuoles. Dorsal setae as in female. Prodorsal shield with three pairs of setae, vi 15 (14–16), ve 22 (18–28), sci 23 (18–26), one pair of eyes 10 (8–10) in diameter and one pair of postocular bodies (pob) 14 (10–18) in diameter. Central hysterosomal shield entire, bearing six pairs of setae, c1 18 (14–20), d1 17 (16–18), d2 23 (18–26), e1 12 (10–14), e2 23 (18–28), f1 33 (30– 36). Humeral shields with setae c2 24 (20–26). Suranal shield with two pairs of setae h1 12 (10–12) and h2 20 (18– 22). Distances between setae: vi– vi 33 (30–36), ve–ve 57 (52–60), sci–sci 88 (82–94), vi–ve 19 (14–22), ve–sci 26 (24–28), c1–c1 35 (30–42), d1–d1 55 (50–62), d2–d2 97 (92–99), e1– e1 27 (26–30), e2– e2 70 (66–74), f1–f1 44 (38–56), h1–h1 9 (6–10), h2–h2 45 (42–48), c1–d1 39 (34–46), c1–d2 42 (40–46), d1–d2 24 (22–28), d1– e1 36 (34–38), d1– e2 24 (22–26), d2– e2 34 (30–36), e1– e2 25 (22–26), e1–f1 16 (14–16), h1–h2 18 (16–20). Ratios: pob /eye 1.5 (1.0–1.8), vi / vi–vi 0.5 (0.4–0.5), c1 / c1–c1 0.5 (0.4–0.6), d1 / d1–d1 0.3 (0.2–0.3), e1 / e1– e1 0.4 (0.4– 0.5), h1 / h2 0.6 (0.5–0.7).

Venter ( Figure 14 View FIGURES 13 – 18 ). Ventral setae subequal, 1a 20 (16–24), 3a 19 (16–24), 4a 19 (16–21). Aggenital area with one pair of setae, ag1 16 (13–19) situated on small platelets. Anal area with three pairs of pseudanal setae, ps1 7 (6–7), ps2 11 (11–12), ps3 11 (10–12) ( Figure 15 View FIGURES 13 – 18 ). Aedeagus as in Figure 16 View FIGURES 13 – 18 .

Gnathosoma. Subcapitulum bearing two pairs of adoral setae (ro1, ro2) and two pairs of subcapitular setae, m 20 (16–24) and n 16 (14–17). Distances between subcapitular setae: m–m 24 (24–27), n–n 21 (20–22) and m–n 11 (10–13) ( Figure 17 View FIGURES 13 – 18 ). Movable cheliceral digits 36 (30–40), in length. Palpi five-segmented; palptarsus with a tridentate terminal eupathidium, one subterminal spine-like eupathidium, one solenidion and four smooth setae; palptibia with a large claw, a slender accessory claw and two proximal setae; palpgenu with one smooth seta; palpfemur with two smooth and one strongly barbed setae ( Figure 18 View FIGURES 13 – 18 ).

Legs ( Figures 19–22 View FIGURES 19 – 22 ). Length of legs: legI 175 (163–191), legII 163 (155–175), legIII 162 (151–171), legIV 171 (159–179). Counts of setae and solenidia on legs I–IV: coxae 2+1 elcp, 1, 2, 1; trochanters 1, 1, 1, 1; femora 4, 4, 2, 2; genua 2+1 κ, 0, 0, 0; tibiae 5+1 φp, 5+1 φp, 5+1 φp, 5+1 φp; tarsi 11+2 ω, 9+2 ω, 7+1 ω, 7+1 ω. Length of spines and solenidia: κ I 4, ω I 10 (8–12), ω I♂ 13 (12–15), ω II 11 (10–12), ω II♂13 (12–14), ω III 5 (4–6), ω IV 6 (4–9).

Materials examined. Fourteen female and one male specimens collected at Kounoupidiana, Co. Chania, Crete Island, 18 July 2011, on Vitex agnus castus L. ( Verbenaceae ). Six females and one male, on Rubus sp. ( Rosaceae ) and one female on Salvia pomifera L. ssp. pomifera (Lamiaceae) , Sirikari, Co. Chania, Crete Island, 21 July 2011.

Nine females, Psahna, Co. Evia, on Cupressus sempervirens L. ( Cupressaceae ) and two females, Aghia Kyriaki, Co. Evia, on Quercus coccifera L. ( Fagaceae ), 2 December 2011. One female, Pethamenos, Co. Evia, on Cupressus sempervirens L. ( Cupressaceae ), 3 December 2011.Two females, Ano Vlasia, Co. Achaia, on Quercus coccifera L. ( Fagaceae ), 10 December 2011. One female, on Hedera helix L. ( Araliaceae ) and one female on Rubus sp. ( Rosaceae ), Makrynitsa, Co. Magnisia and one female on Hedera helix L. ( Araliaceae ), Portaria, Co. Magnisia, 16 December 2011. Six females on Quercus ilex L. ( Fagaceae ), Horefto, Co. Magnisia and one female on fern, Zagora, Co. Magnisia, 17 December 2011. One female, Hymmetos Mountain, Co. Attiki, on unidentified Thymelaeaceae , 18 March 2012. Three females and one male, on Asparagus officinalis L. ( Asparagaceae ) and two females on Rubus sp. ( Rosaceae ), Stemnitsa, Co. Arcadia, 24 March 2012. Two females, Vytina, Co. Arcadia, on Hedera helix L. ( Araliaceae ), 25 March 2012. Four females and one male, Dervenochoria, Co. Viotia, on unidentified Thymelaeaceae , 16 April 2012. Five females, Rizoma, Co. Rodopi, on Cupressus sempervires L. ( Cupressaceae ), 25 May 2012. Two females on Populus sp. ( Salicaceae ) and two females on Salix caprea L. ( Salicaceae ), Glyki, Co. Thesprotia, 26 August 2012. Two females on Ceratonia siliqua L. ( Fabaceae ) and one male on Olea europaea L. ( Oleaceae ), Melinta, Lesvos Island, 1 September 2012. 13 females and four males, Dikella, Co. Evros, on Lycium barbarum L. ( Solanaceae ), 17 October 2012. One female, Neapoli, Co. Laconia, on Pyrus amygdaliformis Vill. (Rosaceae) , 5 December 2012.

All specimens are deposited in the Acari collection of Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, Greece.

Distribution. Turkey ( Koç et al. 2005) and Greece (this paper).

Remarks. The holotype specimen matches closely with the Greek specimens, except that the aggenital setae are on an entire shield in the holotype, but on small platelets in the Greek specimens.