Spatulaphorus enoplotruporum Khaustov & Frolov 2018, sp. nov.

Spatulaphorus enoplotruporum sp. nov.

(Figs 1–5)

Description. FEMALE (Figs 1–5). Body well sclerotized. Length of idiosoma 205 (175–240), width 120 (100–140). Gnathosoma (Fig. 2). Gnathosomal capsule, excluding palps, subrectangular, length 22 (19–24), width 22 (19–24). Dorsum with one pair of needle-like cheliceral setae (сha) 7 (5–7). Dorsal median apodeme absent. Postpalpal setae (pp) spine-like, situated laterally to setae сha. Ventral gnathosoma with one pair of smooth, pointed subcapitular setae m 6 (5–7) and round pits situated posteriad to m. Palps with smooth setae dFe and dGe dorsolaterally, setae dGe pointed, about twice longer than needle-like dFe. Palps ventrally each with mushroomlike accessory setigenous structure (ass) and tiny solenidion. Palps terminated with small tibial claw and tiny eupathidium-like seta. Pharyngeal pump 2 with weak transverse striation; pharyngeal pump 1 small, butterfly-like; pharyngeal pump 3 oval, slightly smaller than oval pump 2 (Fig. 2C).

Idiosomal dorsum (Figs 1A, 5A, C, E, G). All dorsal shields with numerous tiny, barely discernable dimples (Figs 5A, C, E, G). Prodorsal shield with three pairs of setae (v 1, v 2, sс 2), one pair of weakly barbed capitate trichobothria and one pair of round stigmata (Fig. 5 C). Stigmata associated with well developed tracheal trunks. All dorsal idiosomal setae blunt-ended and barbed. Cupules ia on tergite D, im on tergite EF and ih on tergite H large, round. Tergites D, EF and H each with one pair of oval porous areas. Lengths of dorsal setae: v 1 23 (21–23), v 2 13 (10–13), sс 2 49 (45–54), с 1 37 (30–38), с 2 49 (44–54), d 42 (39–48), e 25 (23–31), f 54 (44–58), h 1 51 (45–57), h 2 16 (16–21). Distances between setae: v 1– v 1 22 (20–23), v 2 –v 2 39 (34–42), sс 2 –sс 2 47 (39–49), с 1– с 1 46 (39–47), с 1– с 2 27 (23–29), d–d 68 (55–74), e–f 17 (14–17), f–f 40 (31–46), h 1– h 1 26 (22–32), h 1– h 2 18 (14–20).

Idiosomal venter (Figs 1B, 5B, D, F, H, I). All ventral plates with numerous tiny dimples. Setae 1 b and 2 с pointed; other ventral setae with slightly rounded tips. Setae 1 b and ps 3 with a few barbs; setae ps 1, 2 strongly barbed; other ventral setae smooth. Bases of setae ps 3 situated distinctly anteriad bases of setae ps 1-2. Apodemes 1 (ap1) and apodemes 2 (ap2) well developed and joined with thick prosternal apodeme (appr); sejugal apodeme (apsej) developed only laterally; apodemes 3 (ap3) weak, not reaching to poststernal apodeme (appo); apodemes 4 (ap4) well developed, exceeding beyond bases of setae 3 b. Apodemes 5 (ap5) well developed, joined with appo and reaching beyond setae 4 a. Anterior genital sclerite (ags) small, cup-like; posterior genital sclerite (pgs) small, oval, with lateral processes (Figure 5I). Posterior margins of posterior sternal plate weakly concave in middle part. Posterior margin of aggenital plate rounded. Lengths of ventral setae: 1 a 9 (9–10), 1 b 17 (15–21), 1 с 11 (10–12), 2 a 10 (10–11), 2 с 23 (18–23), 3 a 14 (12–16), 3 b 10 (9–11), 3 с 12 (11–14), 4 a 11 (10–13), 4 b 15 (14–17), 4 с 12 (12–14), ps 1 22 (21–25), ps 2 23 (21–25), ps 3 18 (17–20).

Legs (Figs 3, 4). Leg I (Fig. 3A) slightly thicker than leg II. Setal formula: 1–4–2–17 (4). Tibiotarsus enlarged, with large claw. Setae (u) consolidated into a horn-like structure opposing to claw. Tarsal claw blunt-tipped. Seta s distinctly foliate distally; seta pv” slightly foliate distally. Seta d of femur spatulate, with short subterminal projection. Setae l’ of femur pl’ and k of tibiotarsus smooth; other leg setae (except eupathidia) sparsely barbed. Setae l’ of femur, (l) of genu and k of tibiotarsus blunt-ended; other leg setae (except eupathidia) pointed. Lengths of solenidia ω 1 8 (7–9), ω 2 6 (5–7), φ 1 8 (8–9), φ 2 6 (5–6); Solenidion φ 1 thick, clavate, other solenidia weakly clavate. Leg II (Fig. 3B). Setal formula: 1–3–1–4–6(1). Tarsus with padded claws and empodium with three lobes, one distal and two lateral. Solenidion ω 6 (5–7), weakly clavate, solenidion φ absent. Setae (pv) of tarsus distinctly foliate distally; setae d and l’ of femur blunt-ended; other leg setae pointed. Seta u’ of tarsus smooth and thin; other leg setae barbed. Leg III (Fig. 4A). Femur divided into basi- and telofemur. Setal formula: 1–2–1–4–6. Claws and empodium of same shape as on tarsus II. Setae (pv) of tarsus distinctly foliate distally; setae v’ of trochanter, d, v’ of femur and l‘ of genu blunt-ended; other leg setae pointed. Seta u’ of tarsus smooth; other leg setae barbed. Leg IV (Fig 4B). Femur divided into basi- and telofemur. Setal formula: 1–2–0–4–6. Claws simple, empodium round, stalked. Setae tс”, u’, and (pv) slightly foliate distally (flattened tips difficult to discern in some specimens); setae l’, v’ of tibia and t с’ of tarsus pointed; other leg setae blunt-ended. Seta pl” of tarsus smooth, spiniform; other leg setae barbed.

MALE unknown.

Type material. Female holotype, slide ZISP T-Pygm-001, Thailand, Chiang Mai, X.1986; paratypes: 19 females, same data, 4 females, Thailand, Chiang Mai, Mae Ai, VII.1992, N.Kagana.

Type deposition. The holotype and four paratypes are deposited in the collection of Zoological Institute of RAS, Saint Petersburg, Russia; 19 paratypes are deposited in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.

Differential diagnosis. The new species is most similar to S. сamerikae Dastych and Rack, 1993, described from Botswana (Dastych & Rack 1993), by the similar modifications of setae on tibiotarsus I and tarsus II, presence of apodemes 5, and characteristic position of setae ps 3 anteriorly to ps 1, 2. The new species differs from S. сamerikae by distinctly barbed setae ps 1, 2 (vs. smooth in S. сamerikae), foliate setae on tarsi III and IV (vs. nonmodified in S. сamerikae) and by distinctly longer dorsal setae d 39–48, f 44–58, h 1 45–57 (vs. d 25–30, f 24–31, h 1 24–31 in S. сamerikae). The new species also similar to S. langi Dastych and Rack, 1993, described from Vietnam (Dastych & Rack 1993), by the similar relative lengths of dorsal idiosomal setae and by the same number of modified foliate setae on tibiotarsus I and tarsi I and II. The new species differs from S. langi by non-modified setae tс’ on tarsi II and III (vs. spiniform in S. langi), by setae ps 1, 2 distinctly barbed and subequal to ps 3 (vs. ps 1, 2 smooth and distinctly shorter than ps 3 in S. langi), and by setae 2 a distinctly shorter than 2 с (vs. 2 a distinctly longer than 2 с in S. langi).

Etymology. The name of the new species refers to its association with beetles of the genus Enoplotrupes.