Neparholaspis evansi Krantz, 1960

Marchenko, Irina I., 2016, A new species of Neparholaspis (Acari: Parholaspididae) from Russia, with additional information on Neparholaspis evansi Krantz, 1960, Zootaxa 4154 (4), pp. 453-465 : 460

Neparholaspis evansi Krantz, 1960

( Figs 15–16 , 22–25 )

Neparholaspis evansi Krantz, 1960: 401

Material examined: paratype female, U.S.A., Oregon, 2 miles north of Waldport , under Pinus contorta , in litter, 1 February 1959, coll. J.D. Lattin. Coordinates of Waldport— 44°25’N, 124°04’W. This paratype was transferred from Oregon State University to ISEA, Novosibirsk .

Female. Dorsal idiosoma ( Fig. 23 ). Dorsal shield entire, oval, 990 long, 690 wide at level of setae J1–J1; with strip of soft integument around shield beginning with setae s1. Measurements of dorsal idiosoma including soft strip: 1020 long and 705 wide. Surface of shield with punctiform reticulation, more distinct in opisthonotal region. Shield with 29 pairs of simple long curved or whip-like setae, 88–125 long, except one pair of short setae j1, 38 long. Podonotal region with 17 pairs of setae: setae z1 absent, setae r6 located in soft ventral integument; 10 pairs of poroids, including two pairs of enlarged glands gdz1 and gds4. Opishonotal region with 12 pairs of setae and 11 pairs of poroids, including two enlarged glands gdZ2 and gdS5. Marginal soft integument with three pairs of acicular setae R5–R7, 88–90 long.

Ventral idiosoma. ( Fig. 22 ). Base of tritosternum 50 long and 25 wide, pilose laciniae 150 long. A pair of free, sclerotised, elongate presternal shields present. Sternal shield fused with endopodal I–II and peritrematal shields. Sternal shield 200 long at mid-line and 167 wide at narrowest point between coxae II; extending posteriorly to the middle of coxae III; slightly concave on anterior margin and medially concave on posterior margin; ornamented with punctiform curved lines, more distinct in central region; with three pairs of acicular setae St1–St3 (60–65) and two pairs of slit-like lyrifissures (iv1, iv2) ( Fig. 15 ). Metasternal shields free, small, rounded, partially overlaping posterior margin of sternal shield, anterior margin of genital shield and endopodal III shields; each with acicular setae St4 (65) and lyrifissure iv4. Genital shield wider than long: 155 long and 205 wide at level of St5 setae (77); rounded anteriorly and truncate posteriorly; without distinct punctiform ornamentation. Ventri-anal shield 415 long and 485 wide at widest point at level of Jv2 setae; with punctiform reticulation; fused with peritrematal shields at level of posterior margins of IV coxae; divided from peritrematal shields by short narrow slits. Shield carrying a pair of “expulsory vesicles” or enlarged glands gv2, located in antero-lateral regions of shield, posterior to coxae IV; enlarged glands gv3, genital lyrifissures iv5, located on the anterior margin; three pairs of circular lyrifissures and four pairs of pre-anal setae Jv1–Jv4, Zv1 (88–93), three circum-anal setae, bases of para-anal setae (50) located at level of anterior margin of anal opening, post-anal seta not clearly visible. Ventral soft integument with four pairs of setae: dorso-marginal seta r6 (88), three pairs of opisthogastric setae Jv4, Zv3, Zv4 (88–93) and three pairs of circular lyrifissures. Metapodal shields absent. Peritrematal shields fused anteriorly with dorsal shield, medially with exopodals, endopodals, sternal and posteriorly with ventri-anal shields. Peritrematal shields carrying four pairs of distinct poroids: two pairs of lyrifissures ip1, ip2 and two pairs of enlarged glands: gp1, located between coxae II–III and gp2 posterior to stigmata ( Fig. 16 ). Peritreme extending anteriorly and dorsally lyrifissurees idj1 or insertion of setae j2; or to middle of coxae I from ventral view. All glands on dorsal and ventral parts of idiosoma enlarged, similar in structure, with the exception of largest glands gv2 or “expulsory vesicles” with a specific internal structure.

Spermathecal structures not evident.

Gnathosoma. Fixed digit of chelicera 75 long, with six teeth in addition to to bidentate apical hook ( Fig. 24 ); pilus dentilis not visible; movable digit 73 long, with three teeth in addition to tri-dentate apical hook, with diagonal flange on outer surface of digit and basal transverse relief line. Chelicera with dorsal (paraxial), lateral (antiaxial) lyrifissures, dorsal wedge-shaped seta; crown-like and oblong setal brushes. Epistome as in original description and illustration of Krantz (1960). Corniculi 115 long and 45 wide at widest point of base; 1.57 times longer than movable digit of chelicera ( Fig. 25 ). Internal malae pilose on outer margin. Deutosternal groove with six denticulate rows, each bearings 6–22 denticles and smooth basal raw, seta h1 (92) longer than other: h2 (30), h3 (65) and pc (38). Palp with al1 and al2 setae on genu spine-like, palp apotele 3-tined, medial tines spatulate.

Legs. Lengths: I 650, II 575, III 500, IV 675 µm. Chaetotaxy of legs I–IV: coxae—2, 2, 2, 1; trochanters—5, 5, 5, 5; femora—12, 11, 6, 6; genua—11, 11, 7, 8; tibiae—12, 10, 7, 8; tarsi II–IV: 18, 18, 18. Tarsus II with one spurlike seta al1, all other leg setae simple, acicular. Legs II–IV with pretarsus consisting of ambulacral stalk, a pair of large sclerotised claws and rounded pulvillus with five lobes; legs I with very small claws.

Figures

FIGURES 12 – 16. 12. Neparholaspis dubatolovi sp. nov., female, ventral idiosoma; 13. Neparholaspis dubatolovi sp. nov., female, sternal and genital shields; 14. Neparholaspis dubatolovi sp. nov., female, posterior peritrematal shield, poroid-like structure arrowed; 15 Neparholaspis evansi, female, ventral idiosoma; 16. Neparholaspis evansi, female, part of ventral idiosoma with poroids. Not to scale.

FIGURES 22 – 25. Neparholaspis evansi, female. 22. Ventral idiosoma; 23. Dorsal idiosoma. 24. Chelicera; 25. Hypostome.