Sidorchukdispus ekaterinae, Khaustov & Hugo-Coetzee & Ermilov & Theron, 2019

Khaustov, Alexander A., Hugo-Coetzee, Elizabeth A., Ermilov, Sergey G. & Theron, Pieter D., 2019, A new genus and species of the family Microdispidae (Acari: Heterostigmata) associated with Trinervitermes trinervoides (Sjöstedt) (Isoptera: Termitidae) from South Africa, Zootaxa 4647 (1), pp. 104-114 : 107-110

publication ID	https://doi.org/ 10.11646/zootaxa.4647.1.10
publication LSID	lsid:zoobank.org:pub:005ACBF9-7A5E-4C1B-A12D-68BB48393097
persistent identifier	https://treatment.plazi.org/id/03D187D4-FF95-FFE5-78CB-FA1B330EFB1F
treatment provided by	Plazi
scientific name	Sidorchukdispus ekaterinae
status	sp. nov.

Treatment

Sidorchukdispus ekaterinae sp. nov.

( Figs 1–8 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 )

Description. FEMALE ( Figs 1–8 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 ). Length of idiosoma 150 (140–160), width 80 (80–85).

Gnathosoma ( Figs 2 View FIGURE 2 , 5 View FIGURE 5 , 6E, F View FIGURE 6 , 7C View FIGURE 7 ). Length of gnathosoma 16 (16–18), width 15 (14–15). Dorsal median apodeme absent. Length of cheliceral stylets: 12 (11–13). All gnathosomal setae needle-like and smooth. Lengths of gnathosomal setae cha 5 (5), chb 5 (5), pp 3 (3), m 6 (5–6), dFe 4 (4), dGe 5 (4–5). Pharyngeal pumps as in figure 2.

Idiosomal dorsum ( Figs 1A View FIGURE 1 , 6 View FIGURE 6 A–D). Stigmata elongate, located dorsolaterally and covered by lateral flanges of prodorsum. Tergites C, D, EF and lateral plates with distinct scale-like sculpture ( Figs 6 View FIGURE 6 A–C). All dorsal setae slightly thickened, weakly blunt-ended. Setae sc 2 and c 1 smooth, setae d and f with two minute barbs near the base, other setae distinctly barbed. Trichobothria with long stem, clavate, sparsely barbed, with rounded apex. Tiny round pits (probably remnants of alveoli of setae v 2) located anterolaterally to bases of setae sc 2. Lengths of dorsal setae: sc 2 25 (24–27), c 1 29 (27–29), c 2 17 (16–23), d 29 (27–29), e 25 (23–25), f 29 (28–31), h 1 28 (28–30), h 2 34 (33–34). Distances between setae: sc 2 –sc 2 19 (19–20), c 1 – c 1 32 (29–32), c 1 – c 2 12 (12–13), d–d 21 (18–23), e–f 16 (14–17), f–f 20 (20–24), h 1 – h 1 9 (8–9), h 1 – h 2 10 (10–11).

Idiosomal venter ( Figs 1B View FIGURE 1 , 7A, B View FIGURE 7 ). Aggenital and posterior part of posterior sternal plates with scale-like microsculpture. All ventral setae pointed. Setae 1 b, ps 1, and ps 3 distinctly barbed, other ventral setae smooth. Lateral plates with several oblique sclerotized lines laterally to legs III–IV. Posterior margin of aggenital plate evenly rounded. Lengths of ventral setae: 1 a 17 (17–19), 1 b 17 (17–20), 2 a 25 (24–27), 2 b 22 (21–23), 3 a 19 (18–21), 3 b 23 (21–23), 3 c 18 (17–18), 4 a 25 (24–26), 4 b 30 (28–31), 4 c 25 (24–26), ps 1 22 (21–23), ps 3 19 (19–20).

Legs ( Figs 3 View FIGURE 3 , 4 View FIGURE 4 , 7 View FIGURE 7 D-F). Leg I ( Fig. 3A View FIGURE 3 ). Lengths of solenidia ω 1 8 (8–9), φ 1 5 (5), φ 2 7 (7–8); ω 1 large, fingershaped, φ 1 clavate, φ 2 baculiform. Setae v’ of trochanter, v” of femur, l” of genu, k, pl” and (pv) of tibiotarsus smooth; other setae (except eupathidia) barbed. Setae l’ of femur and (l) of genu blunt-ended; other setae (except eupathidia) pointed. Leg II ( Figs 3B View FIGURE 3 , 7E View FIGURE 7 ). Solenidion ω 5 (5) prominent, finger-shaped, solenidion φ 3 (3) ( Fig. 7E View FIGURE 7 ) weakly clavate, located in depression. Setae d of femur and tibia weakly blunt-ended, other setae pointed. Setae v’ of trochanter, l’, v” of femur, v’ of genu, l’ of tibia, pl”, tc” and pv” of tarsus smooth; other setae barbed. Seta v” of femur very small, 1–2 long. Leg III ( Figs 4A View FIGURE 4 , 7F View FIGURE 7 ). Solenidion ω 5 (5) prominent, finger-shaped, solenidion φ 2 (2) weakly clavate, located in depression ( Fig. 7F View FIGURE 7 ). Seta d of femur weakly blunt-ended, other setae pointed. Setae tc’ and pv” of tarsus smooth; other setae barbed. Leg IV ( Fig. 4B View FIGURE 4 ). Setae v” of tibia and tc’ of tarsus smooth, other setae barbed. Seta v’ of trochanter, d of femur and tibia blunt-ended, other setae pointed. Tibia IV without solenidia, but with pore-like structure visible on its typical insertion point.

Type material. Female holotype, slide VK 161018, South Africa, North West Province, near Potchefstroom, Faan Meintjes Nature Reserve , 26°42’S 26°42’E, on termites Trinervitermes trinervoides (Sjöstedt) , 16 October 2018, collected by V.A. Khaustov, S.G. Ermilov GoogleMaps ; paratypes: 36 females, same data GoogleMaps .

Type deposition. The holotype and 10 paratypes are deposited in the acarological collection of the National Museum, Bloemfontein, South Africa ( NMBS), other paratypes are deposited in the mite collection of the Tyumen State University Museum of Zoology, Tyumen, Russia ( TSUMZ)— Zhang (2018). Etymology. The new species is named after the late Dr Ekaterina Sidorchuk.