Trichouropoda turcicaovalis sp. nov., a new uropodine mite (Acari: Mesostigmata: Trematuridae) from Turkey Bal, Durmuş Ali Özkan, Muhlis Zootaxa 2006 1132 31 49 [264,607,604,630] Arachnida Trematuridae Trichouropoda GBIF Animalia Mesostigmata 9 40 Arthropoda species turcicaovalis sp. nov.  Material examined  HolotypeΨ, Turkey, GümüŞhane province, Kelkit district, 39° 88’ N, 39° 38´E, 22 April 2004, litter from mixed forests of  Populus tremula, Quercusinfectoria, Quercus petraea, altitude 1958 ma.s.l.  Paratypes: 2 Ψ, 1 ɗ, same data as holotypeexcept 10 May 2004; 3 Ψ, 2 ɗ, 2 DN, 2 PN, same data as holotypeexcept 9 September 1994.   FIGURE 1.  Trichouropoda turcicaovalis sp. nov., female, dorsal idiosoma. Female  Dorsum( Fig. 1) Dorsal idiosoma oval, 690 long x 550 wide, slightly narrowed anteriorly, well sclerotized, brown. Dorsal plate intact, strongly convex, its surface with weak net­like ornamentation and small circular markings. Plate surrounded by an entire marginal plate. Marginal plate narrow, finely edged with short incisions, bearing 15 pairs of setae. Dorsal plate with a large number of relatively short, simple thorn­like setae, setae not reaching insertion of following setae. Posterior half of dorsum ornamented with small rounded hollows, some of them associated with the bases of setae, others without setae; these hollows absent from anterior half of plate. Setae  I2, I3setae slightly longer and densely pilose; also posterior setae Z5short, pilose.   FIGURE 2.  Trichouropoda turcicaovalis sp. nov., female, ventral idiosoma.  Ven te r( Fig. 2) Epigynial plate 327 long and 173 wide, helmet­like, oblong, with obtusely pointed anterior margin; posterior margin behind coxae IV, anterior point between coxae I. Surface of plate with 6–12 circular markings in posterior half. Ventral region with 5 pairs of sternal (  v1–v5) setae, 12–13 pairs of ventri­anal V­setae, and 27 pairs of marginal setae. Ventrianal plate ornamented with small rounded hollows, some of them associated with the bases of setae. All ventral setae simple, smooth, needle­like. Anterior end of peritremes hooklike at level of coxae II, curved at level of coxae I–II, tip directed inward. Stigmatal openings followed by short posterior prolongation of peritreme. Endopodal line present, reaching to coxae II. Exopodal plate with surface reticulation, metapodal plates without ornamentation, ventral region ornamented with small circular markings. Pedofossal grooves distinct and well developed, without net­like ornamentation, with micropunctation. Anal opening 40 long and 27.7 wide. Anal setae,  V2–V4, V6–V7and other x­region setae short and thorn­like, about 13 long. Post­anal seta Upresent, similar in form to the other ventral setae.   FIGURE 3.  Trichouropoda turcicaovalis sp. nov.: A) Ventral view of gnathosoma, Female; B) Tritosternum, Female; C) Epistome, Female; D) Chelicera, Female; E) Palp, Female; F) Sculpture of dorso­ventral plates, Adults.  Gnathosoma( Fig. 3) Setae C1simple, smooth, thorn­like, almost reaching end of laciniae; setae C2, C3, C4branched. Setae C2with 3–4 sharp points apically; C4with 4–5 fine denticulations laterally, C3longest, with 2 lateral denticles, length 3 x C2. Corniculus 3­pronged, with blunt ends. Hypostomal constrictions present between C3–C4( Fig. 3A). Chelicerae multidentate, with nodus, movable digit 18 long, fixed digit 27 long, middle part 72 long ( Fig. 3D). Tritosternum vase­shaped basally, with a medio­lateral denticle, laciniae laterally denticulate; tip trifid, lateral branches pilose and longer than medial point, medial point with two lateral denticles ( Fig. 3B). Epistome with triangular base and denticulate lateral margins ( Fig. 3C).  Legs( Fig. 4) Coxa I large, tarsi on all legs with a pair of claws at tip of ambulacral prolongation; setae on all legs simple and thorn­like. Femora and trochanters bearing a membranous flange.   FIGURE 4.  Trichouropoda turcicaovalis sp. nov., female, A, leg I; B, leg II; C, leg III; D, leg IV. Male Dorsum Length of idiosoma 660, width 530, as for female.  Venter( Fig. 5). Surface of sternal plate ornamented with small rounded hollows. Sternal setae  v2–v3trifid, inserted close together;  v1,  v4–v5straight, thorn­like. Sternal setae v1inserted level with coxae I–II,  v2–v3close to anterior of genital aperture,  v4close to posterior end of plate,  v5level with coxae IV. Genital aperture oval, between coxae III, and surrounded by an arch posteriorly. Genitalopening 62.5 long x 52.5 wide. Surface of genital plate with weak longitudinal net­like ornamentation. Other morphological features, setal arrangement, body shape and patterns as for female.   FIGURE 5.  Trichouropoda turcicaovalis sp. nov., male, ventral idiosoma. Deutonymph  Dorsum( Fig. 6) Idiosoma 560–600 long, 460–500 wide. Dorsum with small superficial pores. All dorsal and ventral setae thorn­like; basal parts of ventral setae not associated with circular markings. Marginal setae on platelets, except caudal marginal platelets without setae.  Venter( Fig. 7) Sternal and ventri­anal plates ornamented with circular markings of moderate size. Sternal plate anvil­shaped, bearing five pairs of simple, smooth, needle­like setae (  v1, v2, v3, v4, v5); 310 long, 130 wide; sternal pores circular and polygonal. Setae  V2, V3, V4, V6and V8inserted on ventri­anal plate;  V7and V7' inserted in soft integument adjacent to anal plate. Anterior end of peritreme long and twisted, with a distinct deep curve at level of coxae II; posterior extension behind stigma short, straight. Pedofossae distinct, well developed; posterior margin of pedofossae IV pointed. Anal plate boat­shaped, 115 long x 245 wide, with small circular markings along anterior margin. Post­anal seta Upresent, anus with 2 pairs of smooth pointed setae. Distance between coxae II, III and IV: 97, 150, 195 respectively.   FIGURE 6.  Trichouropoda turcicaovalis sp. nov., deutonymph, dorsal idiosoma. Gnathosoma Hypostomal setae C1simple, needle­like, smooth; setae C2forked apically, setae C3longest, with two lateral denticles, setae C4with 4–5 fine lateral denticulation. Epistome, tritosternum, chelicera and other gnathosomal features as in adults, but slightly less robust. Legs Coxae I large, placed close to each other. Structure and chaetotaxy as for adult.    Protonymph   Dorsum(Fig. 8)  Idiosoma 506–520 long, 387–400 wide; podonotal plate trapezoidal, 305 long x 237 wide, with five pairs of mediodorsal setae (  i2, i3, i4, i5, z2). Marginal setae on small platelets, occurring around entire margin of idiosoma. Lateral plates (112 long x 60wide) triangular, with polygonal ornamentation. Pygidial plate transverse, elliptical, 50 long x 140 wide. Anterior half of idiosoma with six pairs of lateral setae ( s1, s2, z1, s5, s6, s7), and posterior half with setae  I1, I2and I3located on membraneous integument. All dorsal setae inserted on tubercles, with a set of needle­like slender thorn­like processes.  Venter( Fig. 9) Sternal plate pitcher­like in shape, with three pairs of short, straight setae, 135 long x 65wide. Anterior sternal platelets 15 long x 25wide. Anal plate elliptical, 65 long x 145 wide; peritremes at the level of coxae II–III, their anterior end hook­like, turned posteriorly, the posterior end straight and long. Setae  V2straight, needle­like; setae  V4, V6and V8on platelets; seta Ushort and thorn­like. Inguinal plates without setae, located behind coxae IV. Larva Unknown.   FIGURE 7.  Trichouropoda turcicaovalis sp. nov., deutonymph, ventral idiosoma.   FIGURE 8.  Trichouropoda turcicaovalis sp. nov., protonymph; dorsal idiosoma.   FIGURE 9.  Trichouropoda turcicaovalis sp. nov., protonymph; ventral idiosoma. Notes   Trichouropoda turcicaovalis sp. nov.belongs to the  T. ovalisspecies group. It is distinguished by its weakly ornamented net­like dorsal and ventral plates. The species also differ from the closely related species  T. ovalisin having densely serrated vertical setae (  i1), by having the epigynial plate ornamented in the posterior half, and more than three pairs of x­setae in the x­area. The new species is also smaller than  T. ovalisin overall body size. Males of the new species are easily distinguished from other males in the  T. ovalisspecies group by the surface reticulation of the epigynial plate. The deutonymph of  T. turcicaovalis sp. nov.can be distinguished from the closely related species  T. ovalisby having 65–70 moderate sized circular markings on the sternal plate. The anal plate has 18 circular markings, which are larger than those on the sternal plate. The protonymph is distinctive in having the dorsal idiosomal setae inserted on tubercles, with a compound base and a set of needle­like slender processes. Females of the new species were carrying one or two eggs in their body cavity.