Pachylaelaps (Longipachys) anatolicus Özbek, 2015

Özbek, Hasan Hüseyin & Mašán, Peter, 2018, A new species and subgenus of Pachylaelaps Berlese from Turkey (Acari: Pachylaelapidae), Zootaxa 4418 (5), pp. 481-492 : 484-486

Pachylaelaps (Longipachys) anatolicus Özbek, 2015

( Figs 1‒23 )

Pachylaelaps (Longipachylaelaps) anatolicus Özbek, 2015: 67 .

Pachylaelaps (Longipachylaelaps) anatolicus .— Mašán, 2017: 111.

New specimens examined. E Turkey, Tunceli Province, Pülümür District, Uzuntarla Village, leaf litter under Quercus sp., 27 April 2016 (two females and seven males), 25 May 2017 (three females and one male) ; Alacık Village , leaf litter under Quercus sp., 27 April 2016 (three females and two males). The specimens are deposited at the Acarology Laboratory of Erzincan University, Turkey; except two specimens (female and male) sent to the mite collection of the Institute of Zoology, Slovak Academy of Sciences, Bratislava.

Amendments to original description. Female.

The female was adequately described in detail by Özbek (2015), and his original description needs only additional metric data, with some marginal changes to the detected variation, because some of our newly collected specimens are smaller and more variable in some characters than stated in the original description.

Dorsal idiosoma ( Fig. 1 ). Dorsal shield 685‒810 µm long and 370‒445 µm wide (length/width 1.63‒1.89), reticulate on surface; net-like pattern usually with additional punctation (punctation sometimes very weakly indicated, or absent in some specimens). Revised lengths of some setae as follows: j1 38‒48 µm, j2 58‒76 µm, j3 70‒90 µm, J4 75‒96 µm, J 5 21‒31 µm (J4/J5 2.88‒4), z2 65‒90 µm, z4 70‒90 µm, z5 46‒63 µm, s2 52‒80 µm, s4 70‒90 µm, s6 60‒80 µm, S1, S3 and S4 50‒80 µm, S5 60‒83 µm, and r5 46‒80 µm.

Ventral idiosoma ( Fig. 2 ). Revised measurements of some structures as follows: sternal shield length 220‒280 µm, genitiventral shield width 214‒255 µm, L/W of genitiventral shield 1.12‒1.23, anal shield length 99‒132 µm, anal shield width 150‒185 µm, L/W of anal shield 0.6‒0.78. Lengths of some selected setae on venter as follows: st1 70‒83 µm, st2 and st3 50‒70 µm, st5 60‒70 µm, and JV1 75‒87 µm. Punctation of net-like meshes on genitiventral shield sometimes very weakly indicated or absent. Lateral and ventral soft integument with 15 pairs of setae (r6, R1, R3‒R7, ZV2‒ZV5, JV2‒JV5), setae ZV1 absent.

Gnathosomal structures ( Figs 3, 5 , 16, 21, 22 ). Central projection of epistome lanceolate, apically with simple point or furcate. Movable digit 150‒170 µm long and 54‒59% of the length of medial segment (270‒295 µm); fixed digit 135‒145 µm long (from dorsal seta to apex). For some other features of epistome and chelicerae see the subgeneric diagnosis above.

Legs ( Figs 4 , 18 ). Femur II with small spur-like projection on ventral surface, as shown in Fig. 4 .

Male. Dorsal idiosoma. Dorsal shield 610‒660 µm long, 360‒415 µm wide, oblong and ornamented with netlike pattern. Chaetotaxy and other characters on dorsum as in female (Özbek 2015).

Ventral idiosoma ( Fig. 6 ). Holoventral shield present, 540‒620 µm long, regularly reticulate on whole surface, and bearing nine pairs of setae (in addition to three circum-anal setae), namely st1‒st5, JV1‒JV3, and ZV2. Parapodal portions of peritrematal shields fully fused to lateral margins of holoventral shield. Lateral and opisthogastric soft integument with 12 pairs of setae (seven pairs of marginals and five pairs of opisthogastric setae). Free metapodal platelets absent, completely incorporated into holoventral shield. Peritremes with anterior ends reaching close to setae z1.

Gnathosomal structures ( Figs 7‒11 , 15, 17, 23 ). Ventral surface of hypostome as in Fig. 7 . Hypostomal setae h1 longest, h2 similar in length to palpcoxal setae (pc), both shorter than h3; corniculi horn-like and lanceolate; deutosternal groove with six transverse rows of denticles. Epistome with base and central projection as in female, but central projection shorter, with more widened serrate subtriangular base, thicker apical part and furcate apex ( Figs 9 , 23 ). Cheliceral digits slender but not so markedly elongate as in female, monodentate; movable digit around 85 µm long, with prominent distal tooth, curved distal hook and sabre-like spermatodactyl; spermatodactyl 158‒163 µm in length, almost two times longer than movable digit (1.85‒1.91); fixed digit with dentition similar to that in movable digit; pilus dentilis setiform, slim and minute ( Figs 8 , 15 ). Palps with three-tined apotele on tarsi and three petal-like projections on tibiae ( Figs 10 , 17 ), and rounded tubercle on femora ( Fig. 11 ).

Legs ( Figs 12‒14 , 19 ). Chaetotaxy as in female. Segments of legs II ventrally spurred, as shown in Figs 12 and 19 ; tarsi II with only one spur-like seta, pl1 ( Figs 13 , 19 ).

Figures

FIGURES 1–5. Pachylaelaps (Longipachys) anatolicus, female, With setal nOtatiOn Of sOme dOrsal setae. 1. DOrsal idiOsOma; 2. Ventral idiOsOma; 3. EpistOme, With variant fOrms Of central prOjectiOn; 4. Ventral spur On femur II, variant fOrms; 5. Chelicera.Scale bar:200 µm (Figs 1, 2) and 100 µm (Figs 3‒5).

FIGURES 6–14. Pachylaelaps (Longipachys) anatolicus, male. 6. Ventral idiOsOma; 7. Ventral gnathOsOma; 8. Chelicera, variant fOrms; 9. EpistOme; 10. Terminal part Of palp (tarsus and tibia); 11. Palpfemur; 12. Ventral spurs On leg II (femur, genu and tibia); 13. Tarsus II; 14. Tarsus IV. Scale bar: 200 µm (Fig. 6) and 100 µm (Figs 7‒14).

FIGURES 15–24. Pachylaelaps spp. 15‒23. Pachylaelaps (Longipachys) anatolicus. 15. Chelicera, male, variant fOrms; 16. Chelicera, female; 17. Terminal parts Of palps (tarsi and tibiae), male; 18. Leg II (tarsus, tibia and genu), female; 19. Leg II (tarsus, tibia, genu and femur), male; 20. Spermathecal duct, female; 21‒22. EpistOme, female, variant fOrms; 23. EpistOme, male. 24. Pachylaelaps (Pachylaelaps) armiger sp. nov., chelicera, female.NOt scaled.