Cilliba cassideasimilis, Bloszyk, Jerzy, Stachowiak, Marcin & Halliday, Bruce, 2006

Bloszyk, Jerzy, Stachowiak, Marcin & Halliday, Bruce, 2006, Two new species of Cilliba von Heyden from Poland, with discussion of the Cilliba cassidea (Hermann) species complex (Acari: Mesostigmata: Uropodina: Cillibidae), Zootaxa 1219, pp. 1-45 : 13-26

Cilliba cassideasimilis sp. nov. ( Figures 9–22)

Cilliba species II.— Bloszyk & Olszanowski, 1985: 488.

Cilliba cassidea .— Bloszyk & Olszanowski, 1986: 193.

Cilliba species I.— Bloszyk, 1990: 227; 1991: 118; 1992: 324; 1998: 99; 1999: 160.

Cilliba sp.— Bloszyk, 1993: 176; 1995: 166; Bloszyk & Olszanowski, 1999: 44; Bloszyk & Krysiak, 2000: 117.

Uropoda (Cilliba) cassidea: Gwiazdowicz, 1999: 39 .

Uropoda (Cilliba) species 1: Skorupski, 2000: 27.

Uropoda (Cilliba) cassideasimilis .—Wi ś niewski & Hirschmann, 1993: 192; Wi ś niewski, 1993: 259.

Uropoda aff. cassidea .— Mašán, 2001: 284.

Material examined. HOLOTYPE: female, Poland, Gorczański National Park, UTM: DV 39, 22 June 1995, leaf litter, alt. 830 m a.s.l., col. PC (GPN­000.08); PARATYPES: Germany: 6 Ψ, 10 ɗ, Schweingangen valley, [1 sample, 1945]. Spain: 4 Ψ, 2 ɗ, la Coruna Province, 43 °01'00" N, 08° 40 '00" W, [1 sample, 1983], 7 Ψ, 18 ɗ, Ponteverda Province, 42 ° 15 '00" N, 08° 60 '00" W, [2 samples, 1983]. Ireland: 4 Ψ, 8 ɗ, Killarney National Park, 52 °00'00" N, 09° 50 '00" W, [4 samples, 1981] ( Fig. 9). Poland ( Fig. 10): 81 Ψ, 101 ɗ, 79 deutonymphs, 27 protonymphs, 15 larvae, Gorczański National Park, UTM: DV 3947, [84 samples, 1974–1995]; 18 Ψ, 20 ɗ, 15 deutonymphs, 8 protonymphs, 2 larvae, Bialowieski National Park, UTM: FD 8394, [17 samples, [1961–2001]; 68 Ψ, 114 ɗ, 54 deutonymphs, 20 protonymphs, 2 larvae, Roztocze, UTM: FB 40, 68, [45 samples, 1956–2001]; 33 Ψ, 45 ɗ, 6 deutonymphs, 2 protonymphs, Bieszczady Mnts., UTM: EV 87, 94, 97, FB 0 1, FV 0 3, 14, 16, 23, 24, [11 samples, 1959–1995]; 2 females, 1 deutonymph, Upper Silesia, UTM: CA 50, CB 70, 81, [3 samples, 1976–1992]; 36 Ψ, 59 ɗ, 1 deutonymph, 2 protonymphs, 1 larva, Beskidy Mnts., UTM: EA 46, 62, EV 0 8, 0 9, 17, 58, 98 [15 samples, 1958–1983]; 3 Ψ, 4 ɗ, 8 deutonymphs, 6 protonymphs, 3 larvae, "Las Gr dowy nad Mogilnic " Res. near Pniewy, WU 81 [6 samples, 1982–1983]; 20 Ψ, 11 ɗ, 25 deutonymphs, 23 protonymphs, 10 larvae, Majdów Res., UTM: DB 86 [6 samples, 1992]; 31 Ψ, 47 ɗ, 17 deutonymphs, 2 protonymphs, Pieniny Mnts., UTM: DV 15, 57, 66, 67, [15 samples, 1968–1979]; 27 Ψ, 38 ɗ, Mazury, UTM: DD 0 9, 54 DE 17, 19, 33, EE 0 7, 0 8, 24, 39, FE 50, [12 samples, 1971–1980]; 38 Ψ, 36 ɗ, Świętokrzyskie Mnts., UTM: DB 73, 85, EB 0 3, 13 [8 samples, 1971–1981]; 13 Ψ, 22 ɗ, 1 deutonymph, 1 protonymph, Babiogórski National Park, UTM: CA 50, CV 99, [6 samples, 1975–1981]; 13 Ψ, 7 ɗ, 2 deutonymphs, Karkonosze Mnts., UTM: WS 33,44, 52, XR 29, XS 23, [5 samples, 1970–1976]; 3 Ψ, 2 ɗ, 6 deutonymphs, 1 protonymph, Wolin National Park & Southern Pomerania, UTM: VV 67,70, WV 52,83, [4 samples, 1975–1996]; 10 Ψ, 9 ɗ, 3 deutonymphs, 1 protonymph, Ojcowski National Park, UTM: DA 16,24, 82. [5 samples, 1969–1970]; 8 Ψ, 6 ɗ, 5 deutonymphs, Tatra Mnts., DV 25,26, [5 samples, 1973–1979]; 22 Ψ, 20 ɗ, 2 deutonymphs, Tuchola forests, UTM: CE 0 3,95, [5 samples, 1976–1996]; 13 Ψ, 25 ɗ, Kujawy, UTM: XV 0 1,71, [3 samples, 1975–2001]; 6 Ψ, 15 ɗ, 4 deutonymphs, Drawa river basin, UTM: WU 58,76, [3 samples, 1968]; 2 ɗ, Bieniszew near Konin, UTM: CC 0 9 [1 sample, 1968]; 4 ɗ, Toruń, UTM: CD 37, [1 sample, 1975]; 1 female, meadow near Jarocin, UTM: XT 76, [1 sample].

Female. Well sclerotised, colour brown.

Dorsal idiosoma ( Fig. 11, 13 A, B). Length 775–828 µm (mean 808 µm), width 746–814 µm (mean 769 µm) (n = 31). Dorsal shield subcircular, smooth, with characteristic ornamentation of scattered circular pits in the posterior half. Marginal shield smooth, with numerous lyrifissures (id), fused with dorsal shield at anterior end of body. Dorsal setae numerous, thick, simple (mean 55 µm). Submarginal setae simple (mean 19 µm), marginal setae very numerous, short, hook­like.

Ventral idiosoma ( Figs 12 A, 13 C, D). Sternal shield smooth, with five pairs of sternal setae (st 1 – st 5); st 1 above the anterior edge of epigynium, and st 2 – st 5 lateral to the epigynium (st 1 = 6 µm, st 2 = 10 µm, st 3 = 15 µm, st 4 = 18 µm, st 5 = 17 µm). Epigynial shield tongue­shaped, articulated at level of coxae IV, with small pits in the central part ( Fig. 13 D). Length of epigynial shield 158–190 µm (mean 175 µm), width 110–134 µm (mean 118 µm); surface = 15344–21079 µm 2. Opisthosoma smooth, except punctate area near the epigynial shield. Ventral setae simple, short; length of setae v 1 = v 2. Adanal setae Ad 1 very short, Ad 2 twice as long as Ad 1. Unpaired seta Pa as long as Ad 1. Anal opening small, oval. Peritreme Vshaped, with characteristic curve in anterior third, without poststigmatic section, prestigmatic section 137–193 µm in length; stigmata at level of coxae III.

Gnathosoma ( Fig. 14). Epistome narrow and serrated, distally bifid. Hypostomal setae h 1 very long (61–82 µm), smooth; h 2 short (17–30 µm), robust; h 3 (16–29 µm), ca one­third length of h 1, serrated; h 4 (12–24 µm), curved, robust or distally serrated. Hypostomal denticles in a row between setae h 2 and scattered between setae h 3 and h 4. Ventral setae of palp trochanter robust, pv 1 (19–33 µm) longer and thicker than pv 2 (11–20 µm) ( Fig. 14 A). Fixed digit of chelicera longer than movable digit, with anterior globular sensillum ( Fig. 14 C). Base of tritosternum broad, with anterior shoulders, then narrowing, 6 ­branched, laciniae finely serrated ( Fig. 14 D).

Legs ( Fig. 15 A). Structure and chaetotaxy typical for the genus ( Table 2). Leg I without claws, but with a long terminal seta.

Male. Well sclerotised, colour brown.

Dorsal idiosoma. Length 756–911 µm (mean 815 µm), width 725–839 µm (mean 780 µm) (n = 38). Structure and chaetotaxy as for female.

Ventral idiosoma ( Fig. 12 B, 13 E, F). Intercoxal region ornamented with small circular pits at level of coxae II–III and in area behind genital shield; sternal setae st 1 – st 3 very short, st 4 – st 5 longer. Genital operculum oval (68–81 x 48 –56 µm). Chaetotaxy and sculpture of opisthosoma as for female.

Gnathosoma ( Fig. 14 B). Hypostomal setae h 1 very long (ca 41 µm), smooth, simple; h 2 very short (9 µm), simple; h 3 modified into nodules 6 µm in diameter; h 4 short (ca 13 µm), curved, with pinnate ending and distal serration, located far from hypostomal axis. Setae pv on palp trochanters massive, pv 1 (ca 19 µm) simple, with single denticle, pv 2 ca 9 µm. Fixed digit of chelicera longer than movable digit, provided with anterior globular sensillum. Tritosternum 6 ­branched, with broad base.

Legs ( Fig. 15 B). As for female, except trochanter III with a robust ventral spine (length 29–44 µm).

Deutonymph. Partly sclerotised, colour yellowish to lightly brown.

Dorsal idiosoma ( Fig. 16 A). Length 681–780 µm (mean 720 µm), width 629–780 µm (mean 660 µm) (n = 37). Dorsal shield subcircular, smooth, marginal shield absent. Dorsal setae numerous, simple (mean 46 µm); some of them accompanied by circular pores; shield surface also with several lyrifissures (id). Submarginal setae simple (ca 36 µm). Marginal setae very numerous, short, hook­like.

Ventral idiosoma ( Fig. 16 B, 18 A). Sternal shield amphora­shaped, with slightly widened base, smooth (length 306–364 µm), extending behind coxae IV, with five pairs of short, simple setae (st 1 –st 5). Two pairs of lyrifissures: iv 1 near camerostome, iv 2 below setae st 5. Ventral shield wide, smooth, with five pairs of simple ventral setae; all setae of equal length. Setae v 1, v 2 and v 5 accompanied by circular pores. One pair of lyrifissures (iv 3) located near setae v 2. Anal shield triangular, with anal opening covered by a small valve, and a pair of very short setae Ad 1. Setae Ad 2 and Pa on shield surrounding the anus, Ad 2 = 2 x Pa. Peritreme long, with characteristic curve at level of coxae II, without poststigmatic extension, prestigmatic section 177–230 µm in length, reaching camerostome, stigmata at level of coxae III.

Gnathosoma . Epistome narrow and serrated, distally bifid. Hypostome similar to female ( Fig. 17 A). Tritosternum 6 ­branched, with broad base ( Fig. 17 B).

Legs ( Fig. 17 C). Structure and chaetotaxy as for female.

Protonymph. Weakly sclerotised, colour white to yellowish.

Dorsal idiosoma ( Fig. 19 A). Length 469–504 µm, width 381–404 µm (n = 3). Podonotal shield pear­shaped, large (length 264–293 µm, width 180–186 µm), smooth. Mesopodal shields small, elongate (59–72 µm); mesonotal shields irregular in shape (diameter 84–91 µm); pygidial shield crescent­shaped (152–163 µm); all shields smooth. Setae j 3–6 simple, short, inserted on podonotal shield; Z 1, J 1 and J 2 longer, inserted on pleura between podonotal and pygidial shields. Setae j 2, z 2, z 3, s 3–6, S 1, Z 2 and J 4 short, positioned submarginally; only J 4 on small protuberances. Setae j 1, s 2, r 3–5, R 1, R 3, S 3, S 4, Z 3, Z 4 and J 5 long, massive, inserted on protuberances along the margin of the idiosoma; apparently supporting a soft, membranous fringe surrounding the idiosoma (width 102–117 µm). Several idiosomal setae with associated circular pores.

Ventral idiosoma ( Fig. 18 B, 19 B). Weakly sclerotised, smooth. Sternal shield poorly defined, with three pairs of simple sternal setae. Metapodal shields elongate, smooth. Opisthogastric integument with four pairs of simple ventral setae (v 1, v 3 – v 5); v 1 and v 3 anterior to the ventri­anal shield, v 4 and v 5 lateral to ventri­anal shield. Three pairs of glands open on soft ventral pleura near metapodal shields (gv 1, gv 2 and gl 6). Ventri­anal shield oval (width 143–156 µm), smooth, with anal opening, a pair of setae Ad and an unpaired seta Pa; Ad = ½ Pa. Peritreme short, simple, without poststigmatic section (prestigmatic section straight, 61–86 µm in length); stigmata at the level of coxae III.

Gnathosoma . As for female, except hypostomal groove more distinctly denticulate. Hypostomal setae h 3 denticulate. Palp trochanter setae pv 1 and pv 2 serrated ( Fig. 20 A). Tritosternum 6 ­branched, with broad base ( Fig. 20 B).

Legs ( Fig. 20 C). Structure of podomeres similar to adults. Chaetotaxy has not been analysed.

Larva. Unsclerotised, colour whitish.

Dorsal idiosoma ( Fig. 21 A). Length ca 347 µm, width ca 266 µm. Anterior end of body with three indistinct cuticular processes. Podonotal shield lanceolate, smooth. Two pairs of sclerites located below the podonotum. Dorsal setae j 1 –j 6 and J 2 inserted paraaxially; j 1 long, recurved, j 2 –j 6 simple, short, located on the podonotum, J 2 bifid, inserted on pleura between podonotal and pygidial shields. Setae z 2, z 3, s 4, S 1 and Z 2 on lateral part of the idiosoma; z 2, z 3 and s 4 robust, longer than j ­series setae, inserted on the edge of podonotum, S 1 and Z 2 positioned in soft pleura. Setae R 1 –R 3, S 4, Z 3, Z 4, J 4 and J 5 massive, inserted on protuberances along the margin of the body; all bifid, except S 4 and Z 4, which are horn­like.

Ventral idiosoma ( Fig. 21 B). Sternal setae (st 1 – st 3) short, simple. Ventral setae v 1 short, simple, located above anal shield, v 5 bifid, inserted lateral to anal shield; v 5 = 60 µm; v 1 = 1 / 3 v 5. One pair of ventral glands (gv) located above setae v 1. Anal shield with one pair of glands, a pair of adanal setae Ad and unpaired postanal seta Pa; Pa = Ad.

Gnathosoma . As for female, except hypostomal setae h 3 and h 4 not present, h 2 long, serrated, denticles on hypostomal surface and hypostomal groove blunt ( Fig. 22 A). Palp trochanter setae pv 1 and pv 2 robust, short; pv 1 = pv 2. Tritosternum 6 ­branched, with broad base ( Fig. 22 B).

Legs ( Fig. 22 C). Trochanter I with serrated seta pl; tibia I with long robust dorsal setae; tarsus I with two proximal postero­dorsal setae robust, laterally serrated, pd 2 = 2 pd 1. Femur II with serrated seta pl; genu and tibia II with spine­like ad 1 – ad 2 and pd 1 – pd 2 setae; tarsus II with setae ad 1 and pd 1 – pd 2, robust, laterally serrated; setae v 1 – v 2 robust, and seta pl robust, distally serrated. Tarsus III with all setae robust, v 1 – v 2, ad and pd long.

Etymology: The name of this species refers to its similarity to C. cassidea .