Eutarsopolipus teuceri, Seeman, 2021

Seeman, Owen D., 2021, Contrasting species diversification of Eutarsopolipus (Acariformes: Podapolipidae) on Castelnaudia and Notonomus (Coleoptera: Carabidae), Zootaxa 4971 (1), pp. 1-74 : 34-37

Eutarsopolipus teuceri sp. nov.

( Figs 21–23 )

Diagnosis. Adult female: Gnathosomal length 58–61, width 51–54; anterior margin of prodorsal shield slightly eroded medially; v1 8–10, sc1 18–20, c1 17–22, c2 15–16, d 18–19, f 15–18, h 7–10, v1-v1 42–48, d-d 130–140, f-f 125–130; genua II-III setae l′ 2–4, tibia I seta l′ 6–7, tarsi II-III setae tc′ 3–4, tc′′ 5–6, pv′′ large, 4. Larval female: Unknown.

Material examined. Holotype female, ex Castelnaudia porphyriaca . 1.5 km from Mt Cabinet , via Jimna, Sunday Ck, 26° 42ʹ 39ʺ S 152° 33ʹ 49ʺ, 9 Sep-30 Nov 1974, G. & S. Monteith, pitfall trap, IN5370, HR# T 57070 ( QMS 113506 ) . Paratypes. 2 females, 3 males, ex C. porphyriaca, Conondale Range , 27 Nov. 1974, G. Monteith, unregistered specimen ( QMS 113507 , 113510-12 , ANIC 52-003962 ). All in QM except one female in ANIC .

Description. FEMALE ( Figs 21–22 ; n = 3).

Gnathosoma . Length 58 (60–61), width 54 (51–54). Cheliceral stylets 77 (75–82), setae ch 26 (20–27), su 8 (10).

Idiosoma ( Fig. 21 ). Length 360 (310–325), width 250 (225–250). Prodorsal plate not eroded anteriorly; setae slender, v1 10 (8–9), v2 alveolar remnant, sc1 20 (18–20), sc2 broken (85–105). Distance between setae v1–v1 48 (42–44), sc1–sc1 92 (80–86), v1–sc1 31 (26–30), v2–v2 48 (41–43), sc2–sc2 105 (100–105), sc1–sc2 28 (23–29). Opisthosomal setae slender. Plate C setae c1 17 (17–22), c2 17 (15–16), distance between setae c1–c1 80 (70–75). Plate D setae d 19 (18–19), d–d 140 (130–135), cupuli ia anterolaterad d. Plate EF setae f 18 (15–16), f–f 130 (125), cupuli im anterolaterad f. Plate H divided or fused weakly, seta h 7 (7–10). Venter: coxisterna 1-3 moderately well defined, with few folds, coxisterna 3 weaker than 1-2; coxal setae slender, 1a 4 (3–4), 2a 5 (5–6), 3a 4 (5), 3b 7 (5–6). Alveoli of 1b, 2b present.

Legs ( Fig. 22 ). 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’ m (2), v″ 8 (7-9); genu I, l′ 2 (2–3), l″ 2 (2–3); tibia I, d broken (60–68), l’ 7 (5–6), l’’ 6 (8), v’ 4 (4–5), v’’ 9 (8–10), k 4 (3–4), φ 9 (8); tarsus I, tc’ 15 (13–14), tc’’ 14 (15), pl’ 8 (11–12), pl’’ broken (9–15), pv′ 3 (3–4), pv’’ 3 (4), ω 2 (3), s 6 (6–7), u′′ m (m). Leg II. Genu II, l′ 2 (3–4); tibia II, d 40 (35–43), l’ 6 (7), v’ 10 (10–14), v’’ 17 (18–20); tarsus II, tc′ 3 (3–4), tc ″ 5 (5–6), pl ″ 50 (41–43), pv’’ 4 (4), u’ 6 (7), u′′ m (m). Leg III. Genu III, l′ 2 (3); tibia III, d obscured (32–35), l’ 6 (5–6), v’ obscured (11–13), v’’ obscured (14–15); tarsus III, tc’ 4 (3), tc ″ 5 (5), pl ″ broken (38–42), pv’’ 4 (4), u’ 7 (6–7), u′′ m (m).

LARVIFORM ADULT MALE ( Fig. 23 ; n = 3).

Gnathosoma . Length 32–34, width 21–25. Cheliceral stylets 21–25, setae ch 5–6, su 5–6.

Idiosoma . Length 155–165, width 110–125. Prodorsal plate with setae v1 3–4, v2 alveolar remnant, sc1 5–6, sc2 62–70. Distance between setae v1–v1 16–19, sc1–sc1 41–42, v1–sc1 15–19, v2–v2 18–21, sc2–sc2 49–50, sc1–sc2 21–25. Plate CD setae c1 6–7, c2 5–6, d 6–7, distance between setae c1–c1 42–45, c1–c2 24–29, d–d 35–37; cupuli ia anterolaterad setae d. Plate EF slightly eroded medially; with setae f 2–4 (thickened in one specimen), distance f–f 22–24; cupuli im anterolaterad setae f. Genital capsule length 26–29, width 30–32, setae h minute. Venter: coxal setae 1a 2–3, 2a 3–4, 3a 3–4, 3b 4–5.

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″ 3–4; genu I l′ 2, l″ m–2; tibia I, d 32–37, l’ 3–4, l’’ 3–4, v ’ 2–3, v ’’ 6–10, k 2–3, φ 6–7; tarsus I, tc’ 13, tc’’ 13–14, pl’ 6–7, pl’’ 9–12, pv ′ m, pv’’ 2, ω 2, s 4–5, u ′′ m. Leg II. Genu II, l′ 2; tibia II, d 16–17, l’ 5–6, v’ 9–12, v’’ 10–15; tarsus II, tc′ 2, tc ″ 4, pl ″ 27–33, pv″ 2–3, u’ 4–5, u″ minute. Leg III. Genu III, l′ 2–3; tibia III, d 12–16, l’ 4, v’ 8–10, v″ 12–15; tarsus III, tc′ 2, tc ″ 4–5, pl ″ 26–32, pv″ 3, u ’ 5–6, u″ minute.

LARVAL FEMALE. Unknown.

Differential diagnosis. Eutarsopolipus teuceri sp. nov. is close to E. raveni . Females are most easily separated by the length of seta h, which is short (2–4) in E. raveni but longer (7–10) in E. teuceri . Other small differences are the size of setae tc′ (3–4 versus 2) and pv′ (4 versus 2–3) on tarsus III, which are larger in E. teuceri , and the longer cheliceral stylets (75–82 versus 68–72). Males are almost identical, differing only by the length of setae sc2 (45–50 vs 62–70 in E. raveni ), although the smaller tc′ is also apparent (2 versus minute in E. raveni ).

Eutarsopolipus raveni and E. teuceri both share a small gnathosoma with E. rutherfordae , which is also a member of the nahmani subgroup but its host is Trichosternus subvirens . These two species are most easily distinguished from E. rutherfordae by the strong, stiff setae d and f in E. rutherfordae (very fine, not stiff in E. raveni and E. teuceri ). Eutarsopolipus raveni also has small setae h (2–4 compared to 7–10 in E. rutherfordae and E. teuceri ), while E. teuceri has longer cheliceral stylets (75–82 versus 60), shorter cheliceral setae (20–27 versus 42), shorter seta v′′ on femur II (7–9 versus 16) and much larger setae pv′′ on tarsi II-III (4 versus 2).

Etymology. The specific name teuceri refers to the legendry archer Teucer of the Odyssey, who in battle hid behind the glittering shield of Ajax, alluding to the spectacular metallic purple sheen of the elytra of the host beetle E. porphyriaca .

Remarks. Castelnaudia porphyriaca hosted three species described herein, but also had one larva of another species collected at Conondale. The larva belongs to the pterostichi species group and has an enlarged tibia I seta v′, the only femoral seta is d, and the only setae on all genua is on leg I (seta l′).

The ochoai species group - despoticus subgroup

Diagnosis. Female with dorsal idiosomal setae fine, slender; setae h minute. All life stages with gnathosomal apex evenly rounded.

Figures

FIGURE 21. Eutarsopolipus teuceri sp. nov. Female, dorsum.

FIGURE 22. Eutarsopolipus teuceri sp. nov. Female. Dorsal tibia-tarsus I (A); ventral tibia-tarsus I (B); tibia-tarsus II (C).

FIGURE 23. Eutarsopolipus teuceri sp. nov. Male, dorsum.