Insectolaelaps diaperi Mašán, 2025, sp. nov.

Insectolaelaps diaperi sp. nov. (Figures 14–27) Diagnosis Idiosoma broadly oval, with mostly strong, acicular and similarly long setae; setae j1, r2 and r3 on soft integument in deutonymph. Shield surface completely (dorsal and ventrianal shields, ventral shield of male) or only laterally reticulate (sternal and sternogenital shields), or punctate (anal shield) or smooth (genital shield, sternal shield of deutonymph). In females, sternal setae st1–st3 somewhat thicker than others, bases of st3 conspicuously close together; in deutonymph, st2 and st4 unusually placed on soft integument. Ventrianal shield with four pairs of opisthogastric setae (Jv1–Jv3, Zv2), strongly widened in anterior part, with distinct punctation near anus. Peritremes of adults short, reaching level between coxae II and III. Movable cheliceral digit with six to seven teeth in females and five to seven teeth in deutonymphs; male spermatodactyl thin, apically narrowed, moderately curved and longer than movable cheliceral digit. Genu III and tibia III with eight setae each; genu IV and tibia IV without conspicuously elongated dorsal setae. Male legs II and IV spurred, as in Figs 22A–C, 22E, 23; subapical spur of tarsus II well developed, with rounded apex. Description Female (Figs 14A, 15–17, 18C, 19A, 19B, 20A–20C, 21C, 27A). Dorsal idiosoma (Figs 14A, 15). Idiosoma 530– 660 μm long, 365–445 μm wide (n = 5), weakly dorso-ventrally flattened, elongate, suboval to obovate, completely covered by two dorsal shields. Podonotal shield 240–305 μm long, 350–440 μm wide, semicircular, strongly convex anteriorly, moderately curved laterally and almost straight or slightly convex posteriorly, with four weakly indicated medial scleronodules at level of setae r5, reticulate pattern on surface in anterior and lateral parts, and 22 pairs of setae (j1–j6, z1–z6, s1–s6, r2–r5). Opisthonotal shield 295–350 μm long, 350–440 μm wide, subpentagonal, widest at level between setae S1 and S2, with straight to slightly convex anterior margin, curved lateral margins slightly expanded ventrally, well-rounded posterior margin, reticulate surface and finely punctate medial area between setae J4 and J5; 20 pairs of opisthonotal setae, of which only R1 is located on the soft integument outside the shield. Most dorsal setae relatively stout, acicular and similar in length, except for short, needle-like setae z1 and J5 and elongate, whip-like setae Z5 and S5. Lengths of selected dorsal setae: j1 28–35 μm, j2 37–47 μm, j3 47–54 μm, j4 35–42 μm, j5 34–40 μm, j6 36–44 μm, z1 10–20 μm, z5 34–44 μm, s1 20 –29 μm, s5 and s6 54 –63 μm, r2 26–34 μm, r3 44–54 μm, J1 41–47 μm, J2 39–48 μm, J3 35–43 μm, J4 29–39 μm, J5 15–23 μm, Z1 57–63 μm, Z2 55–64 μm, Z3 39–46 μm, Z4 29–36 μm, Z5 125–175 μm, S1 50 –59 μm, S2 55 –66 μm, S3 49 –58 μm, S4 46 –52 μm, S5 140–190 μm, R1 25–35 μm, R2 25–33 μm, R3 27–38 μm, R4 29–37 μm, R5 32–40 μm. Ventral idiosoma (Figs 16, 17). Tritosternum normal for the genus. Presternal plates weakly sclerotized, transversely striate and separately connected to anterolateral margins of sternal shield. Sternal shield shorter than wide, 68–85 μm long in its better sclerotized part, 98–115 μm wide at the narrowest part between coxae II, with well-developed anterolateral and lateral corners, straight medial anterior and deeply concave posterior margins; lateral surface reticulate or with longitudinal lines, medial surface smooth or sometimes with very faint reticulate pattern in its anterior part; four pairs of sternal setae (st1–st4) and three pairs of slit-like lyrifissures (iv1–iv3), of which st1 on weakly sclerotized anterior part of shield; sternal setae st1–st3 similar in length and thickness, slightly thicker than st4 and other ventral setae, with following distances between them: st3↔st3 (48–60 μm) ≤ st1↔st1 (55–69 μm) <st2↔st2 (92–104 μm) <st4↔st4 (105–112 μm). Epigynal shield elongate, 125–140 μm long, 105–125 μm at widest part behind genital setae (st5) and 76–86 μm at narrowest part in anterior part between coxae IV, with rounded hyaline anterior margin reaching level of setae st4, almost straight lateral and posterior margins, smooth surface, and a pair of setae on posterolateral margins; genital lyrifissures (iv5) on soft integument near posterolateral corners of shield. Ventrianal shield (Fig. 17) longer than wide, 223–255 μm long and 185–232 μm wide, convex anteriorly and posteriorly, concave laterally, conspicuously widened in anterior part and moderately narrowed in submedial or posterior part, normally with four pairs of opisthogastric setae (Jv1–Jv3, Zv2) in addition to three circumanal setae (in one female, as in Fig. 16, Zv3 also on ventrianal shield); almost entire surface reticulate except for punctate area in posteriormost part near anus; circumanal setae similar in length (ad 46–55 μm, pa 42–49 μm); posterior margin connected to opisthonotal shield, with cribrum having two or three transverse rows of denticles. Endopodal platelets III/IV free, small and subtriangular. Exopodal platelets fused into a narrow strips, free of peritrematal shields except for their posterior tips. Peritrematal shields narrow, free over almost entire length including poststigmatic part, connected to podonotal shield between setae r2 and r3; peritremes short, 115–135 μm long, with anterior tip between setae r3 and r4. Two pairs of metapodal platelets present; larger platelets narrow and long, 52–65 μm x 8–15 μm in size, more or less constricted in anterior part; smaller platelets suboval to irregularly shaped, 8–16 μm x 6–10 μm in size. Soft opisthogastric integument with three pairs of setae (Jv5, Zv1, Zv3). All sternal and opisthogastric setae with attenuated apical part and following lengths: st1 35–43 μm, st2 and st3 31–40 μm, st4 33–43 μm, st5 36–45 μm, Jv1 30–39 μm, Jv2 and Jv3 40–49 μm, Jv5 49–65 μm, Zv2 and Zv3 43–55 μm. Sperm induction system (Fig. 21C). Normal for genus, with a pair of well-sclerotized spherical structures, each adjacent to inner margin of coxa IV and bearing two tubular processes; processes often variously curved, slightly thicker in the basalmost part, 45–62 μm long, and with short terminal parts usually insignificantly thickened and apically rounded. Gnathosoma (Figs 14A, 18C, 19A, 19B, 20A–20C). Deutosternal furrow wide (Fig. 18C), with five transverse rows of many denticles connected laterally by undulate longitudinal lines; posteriormost row widest and extending well beyond longitudinal lines; corniculi well sclerotized and spaced, horn-like, slightly divergent to each other; internal malae apically pointed, with densely fimbriated outer margins and projecting beyond corniculi. Hypostomal setae smooth and needle-like; setae h2 shortest and h3 longest (h1 35–45 μm, h2 9–15 μm, h3 45–56 μm, pc 20–27 μm). Middle article of chelicerae relatively long and narrow, gradually widening proximally, 125–140 μm long (Figs 19A, 19B); movable digit 44–52 μm long, with well-developed terminal hook and usually six to seven teeth, including the largest with most proximal position; fixed digit with bidentate terminal hook, a small subterminal tooth and a laterally located row of three larger medial teeth and usually 2–4 minute proximal teeth; pilus dentilis short and thick; dorsal seta short, hyaline and barely observable; arthrodial membrane well developed, usually with a row of several spines near ventral base of movable digit. Anterior margin of epistome triramous; all processes similar in size, pointed and spiny in their apical part (Figs 20A–C). Legs (Figs 14A, 27A). All legs shorter than idiosoma, with well-developed pretarsus and ambulacral apparatus including pulvillus and two claws; pulvillus and claws of legs I slightly smaller than those of other legs; legs I shorter or similar in length to legs IV; dorsal scutal surface of coxae I obliquely cleft, with an interspace of soft cuticle (seen in Fig. 14A) and a row of several denticles on anterior margin; anterior margin of coxae II with a sharp spine; legs I 410–455 μm, legs II 340–385 μm, legs III 330–405 μm, legs IV 410–495 μm long. Chaetotaxy of the legs: leg I—coxa (2), trochanter 1-1/3-1 (6), femur 2-3/1, 2/3-2 (13), genu 2-3/2, 2/1-2 (12), tibia 2-3/2, 2/1-2 (12); leg II—coxa (2), trochanter 1-0/3-1 (5), femur 2-3/1, 2/2-1 (11), genu 2-3/1, 2/1-2 (11), tibia 2-2/1, 2/1-2 (10); leg III—coxa (2), trochanter 1-1/3-0 (5), femur 1-2/1, 1/0-1 (6), genu 2-2/1, 2/0-1 (8), tibia 2-1/1, 2/1-1 (8); leg IV— coxa (1), trochanter 1-1/3-0 (5), femur 1-2/1, 1/0-1 (6), genu 1-2/1, 2/0-1 (7), tibia 1-1/1, 2/1-1 (7); tarsi II–IV with 18 setae; pv1 of genu III absent. Leg setae smooth and mostly needle-like, except for some slightly thickened dorsal setae of femora II–IV and genua III–IV, including spine-like seta pd2 on genua III and IV (Fig. 27A), conspicuously shortened and thickened apicoventral setae (av1, pv1) on tarsi II–IV, elongated and distally attenuated whip-like setae ad2 on tarsi II–IV (these ad2 with unusual perpendicular orientation to tarsal axis). Male (Figs 14B, 18E, 19C, 19D, 20D–20F, 21A, 21B, 22, 23, 27B). Idiosoma 465–570 μm long, 335–420 μm wide (n = 6; Fig. 22D). Podonotal shield 230–290 μm long and 335–420 μm wide, laterally fused with peritrematal shield located ventrally at anterolateral margins; opisthonotal shield 245–295 μm long and 335–415 μm wide, extensively united laterally and posteriorly with ventral shield. All dorsal setae on podonotal and opisthonotal shields, including marginal setae R2–R5. Sternitogenital shield as in Fig. 21A, 210–235 μm long, with well-developed endopodal corners between coxae II–III and III–IV, reticulate pattern only on lateromarginal areas and four pairs of similar sternal setae (st1–st4 30–47 μm); genital setae (st5) on triangular plates adjacent to posteriormost part of sternitogenital shield, each plate with two or three longitudinal lines on outer surface and inner posterior margin connected to posterior margin of sternitogenital shield. Ventr