Eutarsopolipus hadros Seeman 2021, sp. nov.
Creators: name: Seeman, Owen D.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Podapolipidae
Eutarsopolipus
Eutarsopolipus hadros

description: Eutarsopolipus hadros sp. nov.
(Figs 1–8, 10)
Diagnosis. Adult female: setae sc1, c1, c2, d, f with thickened bases, finely tapering (rarely asymmetrically not tapering); anterior margin of prodorsal shield eroded, concave; setae v1 9–11. Larviform male: sc1 9. Larval female: Setae c1 16–17, d 11–12, f 10–11.
Material examined. Holotype female ex. Castelnaudia setosiceps. 9.5 km N of Ravenshoe, 17° 31′ 31″ S 145° 29′ 21″E, 9 Feb-15 Apr 1999, G. & S. Monteith, pitfall trap, 1060 masl, HR# T 78934 (QMS 113562). Paratypes. All ex. C. setosiceps. 10 females, 1 male, 3 larvae, as follows: 2 females, same data as holotype; 6 females, 1 male, 1 larva, The Crater NP, Atherton Tablelands, 17° 25′ 43″ S 145° 29′ 13″E, 5 Dec 1988, G. Monteith & G. Thompson, 1000 masl, HR# T 19427 (QMS 113565–71, 1 female ANIC 52-003949); 2 females, 2 larvae, Millaa Millaa Lookout, 17° 31′ 23″ S 145° 34′ 05″E, 1 Dec 1993 - 25 Feb 1994, J. Hasenpusch, pitfall trap, 1000 masl, HR# T 19429 (QMS 113572–74, ZMH-A0015181). 1 female in each of ANIC, ZMH.
Note: one female specimen from the Crater was too poor to include in the type series (QMS 113575). One pharate female from the Crater (QMS 113576).
Description. FEMALE (Figs 1-3, 10; n = 11).
Gnathosoma. Length 60 (58–64), width 55 (52–62). Cheliceral stylets 73 (68–75), setae ch 21 (19–24), su 14 (11–13).
Idiosoma (Figs 1–2, 10). Length 340 (340–400), width 265 (255–350). Prodorsal plate eroded mid-anteriorly and anterolaterally; setae v1 11 (9–11), v2 alveolar remnant, sc1 20 (15–19), sc2 66 (65–74); setae sc1 thickened but not bulbous (Fig. 10). Distance between setae v1–v1 46 (46–53), sc1–sc1 92 (100–105), v1–sc1 31 (28–35), v2–v2 44 (50–52), sc2–sc2 135 (135–140), sc1–sc2 35 (31–35). Opisthosomal setae c1, c2, d, f thickened, sometimes appearing stout by lacking fine tips, especially setae c2 (Figs 1, 10). Plate C setae c1 17 (11–21), c2 8 (8–18), distance between setae c1–c1 96 (92–100). Plate D setae d 14 (13–20), d–d 145 (145–165), cupuli ia laterad d. Plate EF setae f 14 (14–18), f–f 130 (115–155), cupuli im laterad f. Plate H almost completely divided into two small plates, often ventral, seta h 7 (5–6). Venter (Fig. 2): coxisterna 1 and 2 well defined, coxisterna 3 weakly defined; coxal setae slender, 1a 5 (4–5), 2a 8 (7–8), 3a 6 (7–8), 3b 8 (9–11). Alveoli of 1b, 2b present.
Legs (Fig. 3). Setal counts legs I–III, femur-tarsus: 3-2-6(+ φ)-8(+ ω), 0-1-4-6, 0-1-4-6. Leg I. Femur I, d minute, l’ 3 (2–3), v″ 12 (10–12); genu I, l′ 3 (3), l″ 3 (3); tibia I, d 75 (60–75), l’ 7 (6–7), l’’ 8 (7–10), v’ 4 (4–5), v’’ 11 (10–12), k 5 (5–6), φ 10 (9–10); tarsus I, tc’ 15 (15–18), tc’’ 16 (16–19), pl’ 11 (9–11), pl’’ 17 (14–18), pv′ 3 (2–3), pv’’ 4 (4–5), ω 3 (3–4), s 8 (7–8), u′′ 2 (m–2). Leg II. Genu II, l′ 4 (3–4); tibia II, d 56 (45–50), l’ 7 (6–7), v’ 17 (12–13), v’’ 15 (15–20); tarsus II, tc′ 2 (2), tc ″ 6 (5–6), pl ″ 51 (31–49), pv’’ 4 (4–5), u’ 7 (7–8), u′′ minute. Leg III. Genu III, l′ 3 (3–4); tibia III, d 38 (35–45), l’ 7 (6–7), v’ 13 (11–15), v’’ 16 (16–22); tarsus III, tc’ 2 (2–3), tc ″ 5 (5–6), pl ″ 45 (41–50), pv’’ 3 (3–4), u’ 7 (7), u′′ minute.
LARVIFORM ADULT MALE (Figs 4–5; n = 1).
Gnathosoma. Length 33, width 30. Cheliceral stylets 25, setae ch 5, su 6.
Idiosoma (Figs 4–5). Length 165, width 130. Prodorsal plate with setae v1 5, v2 alveolar remnant, sc1 9, sc2 85. Distance between setae v1–v1 22, sc1–sc1 48, v1–sc1 18, v2–v2 28, sc2–sc2 60, sc1–sc2 21. Plate CD setae c1 6, c2 5, d 6, distance between setae c1–c1 40, c1–c2 30, d–d 41; cupuli ia laterad setae d (asymmetrical expression). Plate EF concave, eroded posteriorly; with setae f 3, distance f–f 28; cupuli im anterolaterad setae f. Genital capsule length 29, width 34, setae h minute. Venter (Fig. 4): coxal setae 1a 3, 2a 4, 3a 5, 3b 5.
Legs. Setal counts legs I–III, femur-tarsus: 3-2-6(+ φ)-8(+ ω), 0-1-4-6, 0-1-4-6. Leg I. Femur I, d minute, l′ minute, v″ 6; genu I l′ 2, l″ 2; tibia I, d 45, l’ 2, l’’ 3, v ’ 3, v ’’ 8, k 4, φ 9; tarsus I, tc’ 13, tc’’ 15, pl’ 8, pl’’ 14, pv ′ 2, pv’’ 2, ω 3, s 5, u ′′ minute. Leg II. Genu II, l′ 2; tibia II, d 21, l’ 5, v’ 11, v’’ 15; tarsus II, tc′ 2, tc ″ 5, pl ″ 27, pv’’ 2, u’ 5, u″ 2. Leg III. Tibia III, d 22, l’ 4, v’ 10, vʺ 13; tarsus III, tc′ 2, tc ″ 5, pl ″ 28, pv’’ 3, u ’ 5, u″ minute.
LARVAL FEMALE (Figs 6–8; n = 3).
Gnathosoma. Length 50–51, width 46–50. Palp with minute dorsal femoral seta. Cheliceral stylets 62–65, setae ch 20–27, su 10–11.
Idiosoma (Fig. 6). Length 225–240, width 175–185. Prodorsal plate overlapping folded membranous cuticle (outline shown in figure), with setae v1 5–6, v2 alveolar remnant, sc1 9–10, sc2 100–120. Distance between setae v1–v1 33–37, sc1–sc1 68–70, v1–sc1 26–28, v2–v2 36–39, sc2–sc2 85–88, sc1–sc2 34–37. Plate C setae c1 16–17, c2 10–11, distance between setae c1–c1 49–52. Plate D setae d 11–12, d–d 61–62, cupuli ia very close to setae d, anteriad to anterolaterad d. Plate EF setae f 10–11, f–f 52–57, cupuli im close to setae f, anterolaterad f. Plate H narrow, 16–19 wide, ca. 25–30 long bearing setae h1 ca. 180, h2 11–12. Venter (Fig. 7): coxisterna 1-2 well defined, coxisterna 3 poorly defined, membranous; coxal setae slender, 1a 2–3, 2a 4–5, 3a 6–7, 3b 5. Alveoli of 1b, 2b present.
Legs (Fig. 8). Setal counts legs I–III, femur-tarsus: 3-2-6(+ φ)-8(+ ω), 0-1-4-6, 0-1-4-6. Leg I. Femur I, d minute, l′ minute, v″ 6–9; genu I, l′ 2, l″ 2; tibia I, d 53–60, l’ 8–9, l’’ 11–13, v’ 2–3, v’’ 12–13, k 6–7, φ 10–11; tarsus I, tc’ 15–16, tc’’ 16–18, pl’ 9–10, pl’’ 17–20, pv′ 2, pv’’ 3, ω 3, s 5, u′′ minute. Leg II. Genu II, l′ 2–3; tibia II, d 35–40, l’ 6–7, v’ 13–15, v’’ 14–20; tarsus II, tc′ 2–3, tc ″ 4–5, pl ″ 40–43, pv’’ 3, u’ 6, u′′ 2. Leg III. Genu III, l′ 2–3; tibia III, d 29–45, l’ 6–8, v’ 12–17, v’’ 15–17; tarsus III, tc’ 2–3, tc ″ 4–5, pl ″ 30–35, pv’’ 3, u’ 6–7, u′′ minute.
Differential diagnosis. Female E. hadros sp. nov. has idiosomal setae that are less thickened than those of E. mixtus sp. nov. and E. umbonatus sp. nov., giving these setae a comparatively slender appearance. See Fig. 10 and the Differential diagnosis for E. mixtus for further discussion of this feature. The anterior margin of the prodorsal shield of female E. hadros is also deeply eroded medially; this erosion is weak in E. umbonatus and absent in E. mixtus. The male of E. hadros has a longer seta sc1 (9 versus 3–6 in E. mixtus and E. umbonatus), but the single male specimen of E. hadros reduces confidence in this possible diagnostic feature. Larval female E. hadros are difficult to distinguish from E. mixtus, but the size of setae f (10–11 versus 14–19) is useful. Larvae of E. hadros are distinguished from E. umbonatus by having longer setae c1 (16–19 versus 8–11).
Etymology. The specific name hadros (Greek, strong, stout) alludes to the strong dorsal setae.
description: Published as part of Seeman, Owen D., 2021, Contrasting species diversification of Eutarsopolipus (Acariformes: Podapolipidae) on Castelnaudia and Notonomus (Coleoptera: Carabidae), pp. 1-74 in Zootaxa 4971 (1) on pages 10-18, DOI: 10.11646/zootaxa.4971.1.1, http://zenodo.org/record/4771514