Berlesia hospitabilis Lindquist &amp; Oconnor &amp; Shaw &amp; Sidorchuk 2020, new species
Creators: name: Lindquist, Evert E.
name: Oconnor, Barry M.
name: Shaw, Matthew D.
name: Sidorchuk, Ekaterina A.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Lebertiidae
Berlesia
Berlesia hospitabilis

description: <i>Berlesia hospitabilis</i> new species (Figures 1–6, 18, 19, 21) <i>Berlesia</i>, undescribed species, host of <i>Podapolipus gryllacridi</i> Lindquist &amp; Sidorchuk, 2019. Diagnosis Adult: dorsal shield faintly reticulated posteriorly, smooth elsewhere, with irregular indication of lateral incisions at level of setae <i>s6</i>; setae <i>j1</i>, mid-dorsals (<i>j4–j6, z5, J1–J3</i>) and <i>J4</i> very short (e.g., <i>j4</i> about one-fourth as long as interval between <i>j4</i> and <i>j5</i>); dorsal shield setae <i>j3</i> and <i>z4</i> moderately long, but shorter than diagonal interval between them, and shorter than transverse interval between <i>j3</i>; setae <i>z1</i> and <i>J2</i> absent. Dorsolateral margins of idiosoma with setae of r-R and S series sparse, not hypertrichous. Soft ventral cuticle with 7 and 6 pairs of opisthogastric setae on female and male, respectively. Leg I genu and tibia each with 12 setae, <i>pd-3</i> absent, <i>av-2</i> present. Tarsus IV with seta <i>pv-1</i> asymmetrically shorter but similar in attenuated form to <i>av-1</i>. Peritremes simple, not elaborated with internal cellular structure. Description <b>Adult: <i>Idiosomatic dorsum</i>.</b> <i>Adult female</i> (Fig. 1A). Idiosoma 550–730 long, 288–377 wide between insertions of setae <i>r3</i>; dorsal shield 507–550 long, greatest width 250–287 at level between insertions of <i>s4</i> (n=4), faintly ornamented with subdermal reticula outlined by sparse puncta (mostly not evident in micrographs of surface structure); shield with irregular indication of lateral incisions at level of setae <i>s6.</i> Dorsal shield with usually 10 or 11 pairs (7 podonotal, 3 or 4 opisthonotal) of smooth setae of which <i>s4</i> or <i>Z5</i> asymmetrically on/off shield margin and <i>J4</i> present or absent; setae <i>j3</i> (58–75), <i>z4</i> (67–85), <i>s4</i> (70–85), <i>Z5</i> (70–75) of similarly long lengths; other shield setae (<i>j4–j6, z5, J1, J3, J4</i>) tiny (5–12), occasionally asymmetrically rudimentary. Soft dorsal peripheral cuticle with tiny setae <i>j1</i> (10–15) anteriorly, <i>z2</i> (40–50), <i>s6</i> (77–83) and <i>r2, r3, r5</i> (50–70) anterolaterally, and <i>Z2</i> (70–83), <i>Z4</i> (80–85), <i>S2</i> (55–67), <i>S3</i> (62–68), <i>S4</i> (72–83), <i>S5</i> (75–90) and <i>R1</i> (48–62) posterolaterally. Dorsal shield with complement of 15 pairs of discernible pore-like structures (5 podonotal, 10 opisthonotal), of which five pairs (two podonotal, three opisthonotal) superficially appear secretory (gland pores) and 10 pairs (three podonotal, seven opisthonotal) non-secretory (poroids). <i>Adult male</i> (Fig. 3A). Idiosoma 566–570 long, 322–330 wide between insertions of setae <i>r3</i>; dorsal shield 512–524 long, greatest width 350–358 at level between insertions of <i>r5</i> (n=2), faintly ornamented and with irregular lateral incisions as in female, margins widened to hold setae <i>j1</i> anteriorly and <i>r2–r5, Z2, Z4, S2–S4</i> on lateral subcutaneous extensions. Dorsal shield with 21 or 22 pairs (13 podonotal, 8 or 9 opisthonotal) of smooth setae of which <i>S3</i> asymmetrically present or absent; setae <i>j1</i> (10–12), <i>j4–j6, z5</i> (7–9), <i>J1, J3, J4</i> (5–7) tiny as in female, occasionally asymmetrically rudimentary; other setal lengths <i>j3</i> (30–37), <i>z2</i> (14–18), <i>z4</i> (47–50), <i>s4</i> (65–71), <i>s6</i> (55–60), <i>r2</i> (25–28), <i>r3</i> (28–30), <i>r5</i> (43–45), <i>Z2</i> (70–72), <i>Z4</i> (62–67), <i>Z5</i> (62–63), <i>S2</i> (44–50), <i>S3</i> (50–53), <i>S4</i> (80–82). Soft dorsal peripheral cuticle with setae <i>R1</i> (37–39) laterally and <i>S5</i> (68–78) posteriorly. Dorsal shield with complement of ca 22 pairs of discernible pore-like structures (9 podonotal, 13 opisthonotal), many of which are difficult to discern whether secretory (gland pores) or non-secretory (poroids). <i>Idiosomatic venter</i>. <i>Adult female</i> (Fig. 1B). Tritosternum base 27–32 long and 22–27 wide at its base, with paired, shortly ciliated laciniae fused for about 8–15 of entire length (150–162) (Fig. 1F). Presternal region without platelets. Sternal shield mid-length (75–82) much less than narrowest width (125–145) between legs II, unornamented; sternal setae <i>st1</i>, <i>st2</i> attenuated, of similar length (53–62). Sternal setae <i>st3</i>, <i>st4</i> similarly attenuated (45–57), with poroid <i>iv3</i> on soft cuticle. Endopodal strips absent alongside coxae III–IV. Epigynal shield smooth, its rounded hyaline anterior margin reaching or slightly overlapping posterior edge of sternal shield, its lateral margins slightly widened at insertions of attenuated setae <i>st5</i> (55–62), its posterior margin slightly convex; shield 198–220 long, 55–63 at narrowest width between legs IV, 68–75 at widest level at setae <i>st5</i>. Postgenital groove with elements of one pair of platelets widely separated at level behind paragenital poroids. Opisthosomatic venter with two pairs of small baculiform platelets, longitudinal metapodal platelets 27–34 long, 5–7 wide and nearly transversal postgenital platelets. Anal shield subrhomboidal, unornamented; shield greatest width (118–135) slightly less than length (128–160, including cribrum 12–15), cribrum width 43–50; postanal seta (52–65) about 1.5 longer than paranal setae (35–40) inserted in line with posterior margin of anus. Soft cuticle with seven pairs of opisthogastric setae flanking anal shield, <i>JV1</i> (40–43), <i>JV2</i> (38–45), <i>ZV1</i> (35–40), <i>ZV2</i> (32–40) anteriorly and <i>JV3</i> (32–38), <i>ZV3</i> (27–32), <i>JV5</i> (52–60) posterolaterally; of three pairs of pore-like structures on soft cuticle, paranal gland pores well separated from lateral margins of anal shield. Peritrematal shield and peritreme extending barely to mid-level of coxae III; peritreme structure simple, without embellished internal chambers (Fig. 1J), its length 52–55, including stigmatal diameter of ca 15; peritrematal shield continuous posteriorly with short exopodal strip extending partly around posterior margin of coxa IV. Exopodal elements absent alongside coxae II–IV. Spermathecal apparatus with simple, elongate (65–75) tubulus leading from solenostome in soft cuticle between bases of legs III–IV to an unpaired sacculus (Fig. 1K). <i>Adult male</i> (Fig. 3C). Tritosternum formed as in female, with laciniae fused for only about one-tenth of entire length (125–140). Presternal region with a pair of platelets preceding genital opening. Sternitigenital shield length 255, narrowest widths 115 at level between coxae II, 100 between coxae III; posterior margin width 63; shield unornamented, narrowly connected to anterior edge of endopodal strips beside coxae IV; alveoli of setae <i>st5</i> barely contiguous with rounded posterolateral corners of shield; setae <i>st1–st5</i> attenuated as in female, <i>st4</i> (26–30) clearly shorter than others (42–50). Paragenital poroids on soft cuticle flanking posterolateral corners of sternitigenital shield. Postgenital groove not developed. Inguinal region with five or six pairs of sigilla indicating unusual muscular development connected with deeply retractable bases of chelicerae.Anal shield similar in rhomboid form, lack of ornamentation as in female, its anterior and lateral apices more irregular; shield longer (136–138, including cribrum ca 12 long) than wide (118–120, cribrum width 45–50); postanal seta (62–65) nearly twice as long as paranal setae (28–37). Soft cuticle with six pairs of opisthogastric setae flanking anal shield, <i>ZV1</i> absent (present on female); other than <i>JV5</i>, these setae much shorter than in female; <i>JV1</i> (23–30), <i>JV2</i> (18–25), <i>JV3</i> (29–32), <i>ZV2</i> and <i>ZV3</i> tiny (7–8), <i>JV5</i> (49–57); six pairs of pore-like structures evident on soft cuticle, paranal gland pores well separated from lateral margins of anal shield. Peritremes, and peritrematal shield with brief poststigmatal exopodal extension, as in female. <i>Gnathosoma</i>. <i>Adult female</i>. Gnathotectum anterior margin with a single smooth, medial anterior projection extending from a convex margin which smooth or slightly serrate at base of projection (Figs 1G, H). Cheliceral shaft, excluding basal section, 175–178 long; fixed digit with truncated apex bearing two or three tiny serrae, alveolar remnant of pilus dentilis, and minute subapical tooth; movable digit (33–35) with three coarse teeth flared laterally (Figs 1C, D). Subcapitulum with 11 to 13 rows of deutosternal denticles, each similarly narrow, with a single denticle (Fig. 1E); subcapitular setae <i>hp1</i> (76–80) and <i>hp3</i> (82–90) similar in attenuated lengths, <i>hp2</i> (22–27) and capitular setae <i>pc</i> (20) similarly short, but <i>pc</i> strongly bulbiform basally. Corniculi somewhat hyaline, blade-like, narrowly rounded apically, moderately long (50–52), but exceeded by elongated tubular salivary stylets (70–80) and even longer, slender, finely fimbriated internal malae (80–90). Palp length 155–162; palptrochanter setae dissimilar in length, <i>v1</i> 53–63, <i>v2</i> 17–20; palpus with femoral seta <i>al-1</i> and genual setae <i>al-1</i>, <i>al-2</i> blunt, not spatulate; palpfemoral seta <i>d</i> (31–35) slightly spine-like, nearly as long as femur; palptarsal apotele two-tined (Figs 2 L–N). <i>Adult male.</i> Gnathotectum with simple anterior margin as in female, but sides more angular, leading to single median projection (Fig. 3E). Cheliceral shaft, excluding short basal section ca 130 long, including fixed digit projection; fixed digit straight, more slender and pointed than in female; movable digit reduced, except for greatly elongated, sinuous spermatodactyl 375–430 long, its base extending anteroventrally beyond apex of fixed digit, gradually narrowing apically, without elaborations (Figs 3B, 18A, 19B). Unlike female, corniculi shorter (25–26), more truncated apically, greatly exceeded by elongated salivary styli (96–100), and capitular setae <i>pc</i> setiform (Fig. 3D). Form and length of other gnathosomatic structures much as in female: internal malae (115–134); setae <i>hp1</i> (ca 50) and <i>hp3</i> (70–76) much longer than <i>hp2</i> and <i>pc</i> (16–18); deutosternum with 11–12 rows of single or rarely doubled denticles. Palp length 150–152. Form and length of palpal setae as in female. <i> <i>Legs.</i> Adult female</i> (Figs 2 A–K). Legs I (462–500) nearly as long as legs IV (495–537), and about 0.9 as long as dorsal shield; other leg lengths (excluding pretarsi): II (395–427), III (405–440). Leg I pretarsus (40–45) to apex of pulvillus, tarsus (125–137) about 1.7–2.1 longer than each of the similarly long femur (73–80), genu (60–65), and tibia (65–70). Legs II–IV with tarsus/tibia length ratios about 1.8–2.1. Complement of setae on leg segments holotrichous for femora I-II-III-IV (12-11-6-6) as presented for the genus; chaetotactic formulae for genua I-II-III-IV: 12 (2-3/2, 2/1-2), 11 (2-3/1, 2/1-2), 9 (2-2/1, 2/1-1), 10 (2-2/1, 3/1-1); tibiae: 12 (2-3/2, 2/1-2), 10 (2-2/1, 2/1-2), 8 (2-1/1, 2/1-1), 10 (2-1/1, 3/1-2); genu I and tibia I without <i>pd-3</i>; tibia III without <i>pl-2</i>. Tarsus I with seta <i>md</i> (65–70) longer than other setae on basal half of segment (Fig. 2G); dorsal subapical cluster of sensory structures with a row of four, tightly adjacent, tiny, pointed setae surrounded by three solenidia, one of which biramous (Figs 2J, K). Tarsi II–IV with a finely serrated ventroapical ridge basal to a short, rounded process (Figs 2E, F), and with setae (<i>d-1</i>) (10–15) nearly half as long as pretarsus to base of claws (22–30). Coxal seta <i>av</i> on leg I and <i>pv</i> on legs II, III strongly bulbiform like subcapitular <i>pc</i> (Figs 2 A–C); coxa IV seta <i>v</i> setiform (Fig. 2D). Trochanters II–IV with basal seta <i>pv-2</i> attenuated (50–55), and III–IV <i>ad</i> slightly spinelike. Femur IV with seta <i>v</i> large, spine-like (40). Tarsus IV with apical seta <i>pv-1</i> asymmetrically shorter, but not thicker than <i>av-1</i> (Fig. 2E). Legs I–IV each with particular dorsal setae enlarged, spinelike: I Fe <i>ad-1</i> (55–62), <i>pd-1</i> (37–42); I Ge <i>ad-1</i> (50–52), <i>pd-1</i> (55–57); II Fe <i>ad-1</i> (60–65), <i>pd- 1</i> (55–60); II Ge <i>ad-1</i> (34–35), <i>pd-1</i> (55–60); II Ti <i>pd-1</i> (29); III Fe <i>ad-1</i> (45–52); III Ge <i>ad-1</i> (55–60), <i>pd-1</i> (60–63); III Ti <i>ad</i> (55), <i>pd-1</i> (61); IV Fe <i>ad-1</i> (50–66); IV Ge <i>ad-1</i> (62–70), <i>pd-1</i> (65–70); IV Ti <i>ad-1</i> (52–55), <i>pd-1</i> (57–60). Relative lengths of other leg setae as shown in Figures 2 A–G. <i>Adult male</i> (Figs 4 A–E). Legs similar in relative dimensions to those of female. Lengths I 440–452, II 367–400, III 392–415, IV 494–495. Legs without noticeable male dimorphism in thickness of segments, with same chaetotaxy as female; legs I–III with form and relative sizes of setae somewhat similar to those of female, including attenuated form of basal seta <i>pv-2</i> of trochanter, but particular dorsal spine-like setae generally shorter and ventral setae more spine-like on femora, genua, tibiae. Other than trochanter, leg IV segments with nearly all dorsal and ventral setae spine-like; tibia and basal half of tarsus with <i>pd-</i> setae formed as a column of five blunt spine-like setae; femur IV with spine-like seta <i>v</i> distinctly smaller (20) than on female. Lengths of elongated dorsal spine-like setae: I Fe <i>ad-1</i> (56), <i>pd-1</i> (20); I Ge <i>ad-1</i> (27–32), <i>pd-1</i> (34–37); II Fe <i>ad-1</i> (65), <i>pd-1</i> (45); II Ge <i>ad-1</i> (23), <i>pd-1</i> (44); III Fe <i>ad-1</i> (23); III Ge <i>ad-1</i> (52), <i>pd-1</i> (41); III Ti <i>ad</i> (37), <i>pd-1</i> (33); IV Fe <i>ad-1</i> (67); IV Ge <i>ad-1</i> (75), <i>pd-1</i> (50); IV Ti <i>ad-1</i> (60). Tarsi II and III with setae (<i>v-1</i>), and <i>mv</i> bulbiform; tarsus IV with setae (<i>d-2</i>) and basitarsal (<i>d-3</i>) thickened, spine-like. <b>Deutonymph. <i>Idiosomatic dorsum</i></b> (Fig. 5A). Idiosoma ca 520 long, ca 290 wide between insertions of setae <i>r3</i> (n=2); dorsal shields weakly sclerotized, unornamented, completely divided by transverse strip of soft cuticle between setae <i>j6</i> and <i>J1</i>. Podonotal shield 245–285 long, ca 260–290 wide at its greatest width at level of setae <i>r5</i>, with 10 or 11 pairs of (<i>j1</i>, <i>j3–j6, z2</i>, <i>z4</i>, <i>z5, s4</i>, <i>s6</i>, sometimes <i>r5</i>); opisthonotal shield ca 175–240 long and 210–225 at widest level anteriad setae <i>Z2</i>, with five or six pairs of setae (<i>J1 J3</i>, <i>J4</i>, <i>Z2</i>, <i>Z5</i>, sometimes <i>Z3</i>). Soft cuticle with two or three pairs of podonotal setae (<i>r2</i>, <i>r3</i>, sometimes <i>r5</i>) and five or six pairs of opisthonotal setae (<i>S2–S5</i>, <i>R1</i>, sometimes <i>Z3</i>). Form and relative lengths of dorsal setae as in adult female, all smooth. Setal lengths on podonotum: <i>j1</i> (11), <i>j3</i> (35–40), <i>j4</i> (10–12), <i>j5–j6</i> (6–7), <i>z2</i> (17–20), <i>z4</i> (ca 60), <i>z5</i> (5–7), <i>s4</i> (ca 60), <i>s6</i> (57), <i>r2</i> (ca 30), <i>r3</i> (37), <i>r5</i> (32–35); on opisthonotum: <i>J1</i> (5–7), <i>J3–J4</i> (3–5), <i>Z2, Z4</i> (50–60), <i>Z5</i> (50–60), <i>S2–S3</i> (40–42), <i>S4</i> (45–48), <i>S5</i> (68–70), <i>R1</i> (25). Peritreme short (50 including stigma), extending anteriorly to mid-level of coxae III, similar in form to adult. <i>Idiosomatic venter.</i> Tritosternum similar in form to that of adult, with laciniae fused for about 22–29 of entire length (98–112 excluding base). Presternal area devoid of ornamentation. Intercoxal area length 210–225, weakly sclerotized (lateral margins not clearly discerned), bearing five pairs of setae and three pairs of poroids (Fig. 5C); setae <i>st1</i> (50), <i>st2–st3</i> (42–43) longer than <i>st4</i> (27) and <i>st5</i> (32–35); paragenital poroid on soft cuticle flanking setae <i>st5</i>. Opisthogaster with oboval, smooth anal shield (Fig. 5C); length ca 90, greatest width ca 70; shield with postanal seta (49) stouter and about 1.4 longer than paranal setae (35). Soft opisthogastric integument with seven pairs of setae; <i>JV1</i>, <i>JV2</i> (30–32), <i>ZV1</i> (8–10), <i>ZV2</i> (15), <i>JV3, ZV3</i> (10–12), <i>JV5</i> thicker (33–36). Paranal gland pores on anal shield laterally. <i>Gnathosoma.</i> Gnathotectum elongate-angular as in male (Fig. 5B); chelicerae, palpal structures, and subcapitulum much as in female, except setal pair <i>pc</i> simple. Cheliceral shaft, excluding basal section, 145 long; movable digit 28–33 long. Subcapitulum with 11 or 12 rows of deutosternal denticles formed as in female; subcapitular setae <i>hp1</i> (60–69) and slightly longer <i>hp3</i> (65–70) similarly attenuated, <i>hp2</i> (18–22) and capitular setae <i>pc</i> (20–21) similarly short. Corniculi (55) with slightly narrower apices than in female, exceeded by elongated tubular salivary styli (80) and even longer, slender, finely fimbriated internal malae (ca 100). Palpus length 135; palptrochanter setae <i>v1</i> 10, <i>v2</i> 28; palpgenual seta <i>d</i> (10) slightly spine-like. <i>Legs.</i> Leg lengths, excluding pretarsi, I (430–490), II (346–372), III (385–414), IV (450–481). Leg setation with normal deutonymphal complement of setae as given for adult female. Tarsi II to IV with ventroapical process and pretarsal structures formed as in female; dorsoapical setal processes (<i>d-1</i>) relatively short (12–13, about 0.6 as long as pretarsus to base of claws 20–25) as in female; form and relative lengths of setae much as in female, with particular setae enlarged, spine-like: I Fe <i>ad-1</i> (45–48), <i>pd-1</i> (31–33); I Ge <i>ad-1</i> (40–43), <i>pd-1</i> (47–50); II Fe <i>ad-1</i> (57), <i>pd-1</i> (38–42); II Ge <i>ad-1</i> (36), <i>pd-1</i> (46–50); III Fe <i>ad-1</i> (53); III Ge <i>ad-1</i> (46–50), <i>pd-1</i> (40); IV Fe <i>ad-1</i> (56); IV Ge <i>ad-1</i> (67), <i>pd-1</i> (61); IV Ti <i>ad-1</i> (ca 50), <i>pd-1</i> (ca 50). Tarsus IV with asymmetry in lengths of setae (<i>v-1</i>) as in female. Claws of all legs strongly formed (length ca 15), projecting freely from pulvillus (Fig. 19E), in contrast to adult and protonymph. <b>Protonymph. <i>Idiosomatic dorsum.</i></b> Idiosoma 405 long, 250 wide at widest level of setae <i>r5</i> (n=1), with weakly sclerotized dorsal shields (Fig. 6A); podonotal shield 208 long and 225 at level between setae <i>s4</i>,
description: Published as part of <i>Lindquist, Evert E., Oconnor, Barry M., Shaw, Matthew D. &amp; Sidorchuk, Ekaterina A., 2020, Review of the genera Berlesia Canestrini, 1884, and Katydiseius Fain &amp; Lukoschus 1983, the subfamily Katydiseiinae Fain &amp; Lukoschus, 1983, and their family group relationships (Acari: Mesostigmata: Gamasina), with description of three new species parasitic on gryllacridid crickets (Orthoptera), pp. 5-70 in Zootaxa 4857 (1)</i> on pages 9-18, DOI: 10.11646/zootaxa.4857.1.4, http://zenodo.org/record/4396474
description: {"references": ["Lindquist, E. E. &amp; Sidorchuk, E. A. (2019) A new species of Podapolipus (Acari: Heterostigmata: Podapolipidae) from an Australian gryllacridid cricket (Orthoptera), with keys to orthopteran-associated species of the genus. Zootaxa, 4647 (1), 115 - 133. https: // doi. org / 10.11646 / zootaxa. 4647.1.11", "Rentz, D. C. F., Su, Y. N. &amp; Bethoux, O. (2018) A new raspy cricket from the northern Australian rainforests (Orthoptera: Gryllacrididae). Zootaxa, 4514 (1), 41 - 52. https: // doi. org / 10.11646 / zootaxa. 4514.1.3", "Lindquist, E. E., Bethoux, O., Robin, N. &amp; Sidorchuk, E. A. (2016) The first case of mite-on-mite hyperparasitism? In: 8 th Symposium of the European Association of Acarologists, Valencia, 11 - 15 July 2016. Universitat Politecnica de Valencia, Valencia, pp. 88."]}