Tenuipalpus combreti Meyer.

Elgoni, Nasreldeen Ahmed, Kamran, Muhammad & Alatawi, Fahad Jaber, 2024, New species, new records and complementary descriptions of two species of the genus Tenuipalpus Donnadieu (Acari: Tenuipalpidae), Zootaxa 5529 (2), pp. 341-358 : 349-353

Tenuipalpus combreti Meyer.

Tenuipalpus combreti Meyer, 1979: 27 .

Redescription Based on female (n =3)

Dorsum ( Fig. 17 ): Colour in life red, Body oval in shape. Length of body from setae v2-h1 188–197; width from sc2-sc2 108–110. Anterior margin of propodosoma deeply notch, depth of notch 16–20, propodosoma with prominent lateral lobes anterior marginally; mediodorsal area of propodosoma framed by longitudinal striae, filled with few irregular striate; lateral area with longitudinal to irregular striae. Opisthosomal integument entirely with rugose; dorsal body setae lanceolate serrate, almost equal in length, except setae sc1 and h2, seta h2 flagelliform, whip-like; opisthosoma pores present in area between d3 and e3. All dorsal setae short (except sc1 and h2), not more than 30 long; setae v2, sc1, and sc2 serrate, sc1 more than three times longer than v2 and sc2; opisthosomal setae serrate; setae e3 shorter than distance between e3 and f2, h2 flagelliform, whip-like. Setal lengths: v2 24–30, sc1 72–79, sc2 25–30, c1 10–15, c3 10–11, d1 10–12, d3 8–9, e1 6 –7, e3 6 –8, f 2 8–9, f 3 8–9, h1 8–11, h2 198–210. Distance between dorsal setae: v2-v2 18–20, sc1-sc1 66–72, c1-c1 44-49, c3-c3 127–128, d1-d1 21–26, d3-d3 121– 123, e1- e1 11–13, e3-e3 95–99, f2-f2 81–85, f3-f3 66–72, h2-h2 49–53, h1-h1 28–30, c1-d1 34–41, d1- e1 30–34, c1-c3 38–41, d1-d3 45–49, e1- e3 40–44, c3-d3 24–25, d3- e3 46–48, e3-f3 20–26, f2-f3 8–11, h1-h2 10–11.

Venter ( Fig. 18 ): Ventral cuticle with longitudinal striations medially. Area between setae 1a and 3a with longitudinal striae, area posterior setae 3a with few transverse striate, area anterior seta 4a with longitudinal striae. All ventral setae smooth, setae 1a, 4a elongate, genitoventral plate developed with transverse striae. Setal lengths: 1a 44–51, 1b 25–28, 1c 20–26, 2b 24–29, 2c 23–25, 3a 10–16, 3b 18–20, 4a 52–59, 4b 20–27, ag 15–16, g1 10–11, g2 10–13, ps2 9–10, ps3 9–10. Distance between ventral setae: 1a–1a 20–31, 3a–3a 20–29, 4a–4a 16–22, 1a–3a 44–50, 3a–4a 47–51.

Gnathosoma ( Fig. 19–20 ): Palpi 3-segmented, median segment elongates, bearing one barbed seta d 7–8; distal segment short, with eupathidia ul ′ 3–4 ul ″ 6–7, one pair of subcapitulum seta m 12–18; distance between setae m-m 11-12

Legs ( Fig. 21–24 ): Legs measurement from trochanter to tarsus; leg I 115–121; leg II 106–110; leg III 99–105 and leg IV 95–100; Number of setae on leg I-IV (from coxa to tarsus, solenidion in parenthesis): coxae 2-2-1-1; trochanters 1-1-2-1; femora 4-4-2-2; genu 3-3-1-1; tibiae 5-5-3-3; tarsus 7(1ω)-7(1ω)-5-5.

Material Examined: Three females ( KSMAAS24 -Ten-Ten-1–3), Amaranthus spp. ( Amaranthaceae ), Aseer, Saudi Arabia, 18. 5542441°N, 42. 208737°E, March 1, 2024, coll. M. Kamran, E.M. Khan .

Distribution: South Africa ( Meyer,1979, 1993) and Saudi Arabia (present study)

Remarks: Our re-description matches the original description except setae in coxa I which three in original description and two setae in our re-description and variation in the length of dorsal setae, especially the second pair of propodosomal setae sc1 longer than other dorsal setae. The species T. combreti previously reported from Combretum apiculatum and C. molle , while in this study collected from Amaranthus spp. Tenuipalpus emeticae Meyer.

Figures

FIGURE 17. Tenuipalpus combreti Meyer, Female, Dorsum. Scale bar 100 um.

FIGURE 18. Tenuipalpus combreti Meyer, Female, Venter. Scale bar 100 um.

FIGURE 19. Tenuipalpus combreti Meyer, Female, Sub-capitulum. Scale bar 20 um.

FIGURE 20. Tenuipalpus combreti Meyer, Female, Palp. Scale bar 10 um.

FIGURES 21–24. Tenuipalpus combreti Meyer, Female, 21. Leg I; 22. Leg II; 23. Leg III; 24. Leg IV. Scale bar 50 um.