Cilliba cassidea ( Hermann, 1804 ),

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: 5-12

publication ID 10.5281/zenodo.172506

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Cilliba cassidea ( Hermann, 1804 )


Cilliba cassidea ( Hermann, 1804)  ( Figures 1–8View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6View FIGURE 7View FIGURE 8)

Uropoda  clavus Haller, 1881: 183.

Discopoma cassidea (Hermann)  .— Berlese, 1882: 9. Cilliba (Discopoma) cassidea  .— Michael, 1894: 307. Cilliba cassidea (Hermann)  .— Athias­Binche, 1977: 575. Uropoda (Cilliba) cassidea  .— Wiśniewski & Hirschmann, 1993: 191; Skorupski & Luxton, 1998:


Material examined. New collections of this species from Spain, France, Great Britain, Ireland, Germany, Poland, and Turkey, and information from the literature were used to determine the distribution of this species in Europe ( Fig. 1View FIGURE 1). Germany: 11 Ψ, 9 ɗ, Karlsruhe, 49 °00'00" N, 08° 40 '00" W, [5 samples, 1980–1982]. France: 26 Ψ, 46 ɗ, Lyon, Belfort, [5 samples, 1978–1980]. Ireland: 11 Ψ, 4 ɗ, Killarney National Park, 52 °00'00" N, 09° 50 '00" W, [3 samples, 1981]. Poland ( Fig. 2View FIGURE 2): 3 Ψ, Szczyrk, CA 50 [2 samples, 1976]; 2 Ψ, 3 ɗ, Świnia Góra Res., DB 85 [1 sample, 1973]; 4 Ψ, 3 ɗ, Bieszczady, FV 16 [1 sample, 1977]; 7 Ψ, 21 ɗ, Przydarlów near Pyrzyce, VU 67,87, [2 samples, 1973]; 1 Ψ, 1 ɗ, Puszcza Bukowa near Szczecin, VV 70, [1 sample, 1973]; 1 Ψ, 3 ɗ, Kolobrzeg, WA 30, [1 sample, 1978]; 43 Ψ, 30 ɗ, 16 deutonymphs, 1 protonymph, Karkonosze Mnts., WS 33,44, 52,64, [6 samples, 1973–1976]; 3 Ψ, 2 ɗ, Suliszewo near Drawsko Pomorskie, WV 53, [1 sample, 1978]; 4 Ψ, 4 ɗ, Grzybno near Slawno, XA 0 2, [1 sample, 1978]; 10 Ψ, 3 ɗ, Stolowe Mnts., XR 26, XS 21,23, 41 [4 samples, 1970–1976].

Female. Strongly sclerotised, brown.

Dorsal idiosoma ( Fig. 3View FIGURE 3 A). Length 849–1104 m, width 820–1053 m (after Athias­ Binche (1977), Hirschmann & Zirngiebl­Nicol (1969 c) and Wiśniewski & Hirschmann (1993 )). In material examined, length 849–952 m, mean 902 m, width 820–915 m, mean 868 m, n = 54. Dorsal shield subcircular, with characteristic ornamentation of scattered circular pits in the posterior half. Marginal shield smooth, with numerous lyrifissures (id), completely separated from dorsal shield. Dorsal setae numerous, simple (ca 50 µm long). Submarginal setae simple (ca 20 µm long), marginal setae numerous, very short, hook­like.

Ventral idiosoma ( Fig. 3View FIGURE 3 B) smooth, except for small pits on endopodal shields and anterior part of opisthosoma. Sternal shield with 5 pairs of simple setae; st 1 located in front of anterior edge of epigynium, st 2 –st 5 lateral to epigynium. Epigynium tongue­shaped (length 189–231 m, width 120–147 m), covered with numerous small oval pits in the central part. Opisthosoma smooth, except region below epigynium covered with pits. Ventral setae (v 1 –v 5) simple, v 1 = v 2; setae v 4 and v 5 located on small mounds. Adanal setae Ad 1 very short, Ad 2 = 2 x Ad 1. Unpaired seta Pa = Ad 1. Anal opening small, oval. Peritremes V­shaped, length ca 161 m.

Gnathosoma  ( Fig. 4View FIGURE 4) Epistome narrow, laterally serrated. Hypostomal setae h 1 very long (ca 76 m), simple; h 2 short (ca 19 m), robust, serrated; h 3 short (ca 26 m), less robust than h 2, distally serrated; h 4 short (ca 29 m), curved, robust, laterally serrated. Hypostomal surface covered with fine denticles of various size; denticles grouped in single row at the level of setae h 2 and distributed irregularly between setae h 3 –h 4.

Hypostomal groove finely serrated ( Fig. 4View FIGURE 4 A). Ventral setae pv 1 –pv 2 on palp trochanters robust, pv 1 ca 26 m long, robust, distally serrated, pv 2 ca 16 m long, simple. Chelicerae of average length, fixed digit with globular sensillus and small denticles on the internal surface, movable digit shorter than fixed digit, with single denticle on the internal surface ( Fig. 4View FIGURE 4 C). Tritosternum 6 ­branched, with broad base, laciniae serrated finely on distal ends ( Fig. 4View FIGURE 4 D).

Legs. Proximal seta ad on leg I in the form of a short, robust process. Dorsal setae on tibia I robust, short. Setae al, pl and distal setae pd on tarsus II –IV serrated.

Male. Strongly sclerotised, brown.

Dorsal idiosoma. Length 849–1095 m, width 830–1007 m (after Athias­Binche (1977), Hirschmann & Zirngiebl­Nicol (1969 c) and Wiśniewski & Hirschmann (1993 )). In material examined, length 849–934 m, mean 891 m, width 830–905 m, mean 868 m, n = 44. Ornamentation and chaetotaxy as for female.

Ventral idiosoma ( Fig. 3View FIGURE 3 C). Sternal region, endopodal shields and anterior part of opisthosoma ornamented with small circular pits. Operculum oval (76–98 x 49 –64 m), located at a level between coxae III and IV. Sternal setae st 1 –st 3 very short, st 4 –st 5 longer. Three pairs of glands located near setae st 3. Ornamentation and chaetotaxy of opisthosoma and peritremes as for female.

Gnathosoma  ( Fig. 4View FIGURE 4 B). Epistome as for female. Hypostomal groove finely serrated. Hypostomal setae h 1 ca 44 m, simple; h 2 ca 12 m, simple; h 3 short (4 µm), blunt, rounded; h 4 ca 17 m, curved, pinnate laterally and serrated distally.

Legs. Structure and chaetotaxy as for female, except some sexual dimorphism of legs I visible: setae al and pl on trochanter robust, setae al on femur and genu robust, dorsal setae of genu and tibia robust, short. Setae pd and pl on femur III robust. Setae al, pl, ad and pd on legs II –III serrated. Setae pl and pd on tarsus IV serrated.

Deutonymph. Partly sclerotised, colour yellowish to lightly brown.

Dorsal idiosoma ( Fig. 5View FIGURE 5 A). Length 775–993 µm, width 700–885 µm. Dorsal shield subcircular, smooth, marginal shield absent. Anterior end of idiosoma with single cuticular process. Dorsal setae numerous, simple; some of them accompanied by circular pores. Between the setae ca 6 pairs of dorsal lyrifissures (id). Submarginal setae simple. Marginal setae very numerous, short, hook­like.

Ventral idiosoma ( Fig. 5View FIGURE 5 B). Sternal shield amphora­shaped, with distinctly widened base, smooth, 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 reaching camerostome, stigmata at level of coxae III.

Gnathosoma  . Epistome narrow and serrated, distally bifid. Hypostome similar to female. Tritosternum 6 ­branched, with broad base.

Legs. Structure and chaetotaxy as for female.

Protonymph. Weakly sclerotised, colour white to yellowish.

Dorsal idiosoma ( Fig. 6View FIGURE 6 A). Length 587–640 µm, width 472–550 µm. Podonotal shield pear­shaped, large, smooth. Mesopodal shields small, elongate; mesonotal shields irregular in shape; pygidial shield crescent­shaped; 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 shield. 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. Several idiosomal setae with associated circular pores.

Ventral idiosoma ( Fig. 6View FIGURE 6 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, 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); stigmata at level of coxae III.

Gnathosoma  and legs. Not analysed.

Larva. Unsclerotised, colour whitish.

Dorsal idiosoma ( Fig. 7View FIGURE 7 A). Length ca 476 µm, width ca 344 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 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 on 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 spinose.

Ventral idiosoma ( Fig. 7View FIGURE 7 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 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 1 long, serrated, hypostomal denticles and denticulated hypostomal groove blunt ( Fig. 8View FIGURE 8 A). Palp trochanter setae pv 1 and pv 2 robust, short; pv 1 = pv 2. Tritosternum 6 ­branched, with broad base.

Legs ( Fig. 8View FIGURE 8 B). Trochanter I with all setae smooth; tibia I with robust dorsal setae; tarsus I with two proximal postero­dorsal setae robust, serrated laterally, pd 2 = 2 pd 1. Femur II with all setae smooth; genu and tibia II with setae ad 1 –ad 2 and pd 1 –pd 2 spine­like; tarsus II with setae ad 1 and pd 1 –pd 2 robust, pd 1 distally serrated; setae v 1 –v 2 robust, and seta pl robust. Tarsus III with all setae robust, al 2, ad 2 and pl long.














Cilliba cassidea ( Hermann, 1804 )

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

Discopoma cassidea

Wisniewski 1993: 191
Athias-Binche 1977: 575
Michael 1894: 307
Berlese 1882: 9


Haller 1881: 183