Cilliba erlangensis (Hirschmann & Zirngiebl-Nicol)

Stachowiak, Marcin, Halliday, Bruce & Bloszyk, Jerzy, 2008, Review of the genus Cilliba von Heyden (Acari: Uropodina: Cillibidae), Zootaxa 1881, pp. 1-42 : 15-19

Cilliba erlangensis (Hirschmann & Zirngiebl-Nicol)

Uropoda (Cilliba) erlangensis Hirschmann & Zirngiebl-Nicol, 1964: 19 , Fig. 23 ; Hirschmann & Zirngiebl-Nicol, 1965: 3; 1969a: 26; Hirschmann, 1979a: 21; 1979b: 80; Karg, 1989: 176; Peċina, 1970a: 422; 1970b: 35; Wiśniewski, 1993a: 251; 1993b: 421.

Cilliba massanae Athias-Binche, 1980: 52 ; 1981a: 169; 1981b: 139; 1983a: 27; 1983b: 95. (unavailable name in thesis).

Cilliba erlangensis .— Athias-Binche, 1985: 228, 1986: 22; Bloszyk, 1984: 70; 1992: 324; 1998: 99; Błoszyk et al., 2003: 34; 2004: 1504.

Uropoda (Cilliba) massanae .— Wiśniewski, 1993a: 252; 1993b: 421.

Uropoda erlangensis .— Kontschán, 2003a: 55; 2003b: 119; 2003c: 8; Mašán, 2001: 289.

Material examined. 6 ΨΨ, 1 DN, apparently syntypes, slides numbered 26, 28, 1429, 1431, 1432, 1433, no other data ( BSCZ).

Other material examined. France: 13 ΨΨ, Essone, 48°62'00"N, 0 2 50'00"W (1 sample, 1968); 29 ΨΨ, Massane (1 sample, 1957). Poland: 3 ΨΨ, Stołowe Mnts., WR 99 (1 sample, 1983); 8 ΨΨ, 12 PN, Wleń, WS 44 (2 samples, 1976); 1 Ψ, 2 PN, Podgórki, WS 64 (1 sample, 1976); 3 ΨΨ, 2 DN, Nowy Kościół, WS 65 (1 sample, 1976); 1 Ψ, Bardo Śląskie, XR 29 (1 sample, 1975); 1 Ψ, Sobótka, XS 23 (1 sample, 1970); 1 Ψ, Roztocze, FA 87 (1 sample, 1986); 2 ΨΨ, Jaroszowicka Mnt., CA 91 (1 sample, 1971); 1 Ψ, Babiogórski N.P., CV 99 (1 sample, 1975); 1 Ψ, Wąwóz Mnikowski Res., DA 0 4 (1 sample, 1976); 13 ΨΨ, Krzeszowice, DA 0 4 (1 sample, 1978); 3 ΨΨ, Kluczwody Valley, DA 24 (1 sample, 1971); 2 ΨΨ, Limanowa, DA 50 (1 sample, 1970); 1 Ψ, Tatrzański N.P., DV 25 (1 sample, 1973); 8 ΨΨ, Pieniński N.P., DV 57 (4 samples, 1968, 1971, 1974); 1 Ψ, Beskid Niski, EV 0 8 (1 sample, 1958); 1 Ψ, Beskid Niski, EV 0 9 (1 sample, 1974); 3 ΨΨ, Kamień Śląski Res., BB 0 0 (1 sample, 1980); 8 ΨΨ, 2 DN, Izbicko (1 sample, no other information); 1 Ψ, Kalinów, CA 0 9 (1 sample, 1987); 9 ΨΨ, Cisna, EV 95 (1 sample, 1978); 8 ΨΨ, Orle Mts., EV 98 (3 samples, 1957, 1960, 1978); 5 ΨΨ, Jarugi Res., FB 40 (1 sample, 1986); 2 ΨΨ, Solina (1 sample, 2001); 1 PN, Szonowice, BA 95 (1 sample, 1980); 1 PN, Racibórz, CA 14 (1 sample, 1980); 1 Ψ, 1 DN, Pyrzyce, VU 87 (1 sample, 1973); 3 ΨΨ, Puszcza Bukowa, near Szczecin, VV 70 (1 sample, 1979). Romania: 2 ΨΨ, Bezirak lasi, 46°52'11" N, 28°07'08" W (1 sample, 1957). (in AMU).

Redescription. Female. Strongly sclerotised, colour brown.

Dorsal idiosoma ( Fig. 28 ). Length 473–641 μm, width 395–509 μm (n = 38). 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 anteriorly. Dorsal setae numerous, simple (ca 24 µm long). Submarginal setae simple (ca 19 µm long), marginal setae numerous, very short, hook-like. Ve n t r a l idiosoma ( Fig. 29 ). Endopodal shields, sternum and anterior part of opisthosoma ornamented with small pits. Sternal shield with 5 pairs of simple setae; st1 located close to anterior edge of epigynium, st2–st5 lateral to epigynium. Epigynium tongue-shaped (length 113–147 μm, width 75–95 μm), covered with numerous small oval pits. Opisthosoma smooth, except region behind epigynium covered with pits. Ventral setae (v1–v5) simple, v1 = ½ length v2; setae v4–v5 located on shield. Adanal setae Ad1 very short, Ad2 = 2 x Ad1. Unpaired seta Pa = Ad2. Anal opening small, oval. Peritremes V-shaped, length ca 87 μm. Tritosternum 6- branched, with broad base, laciniae with finely serrated tips ( Fig. 31 ).

Gnathosoma . Epistome narrow, laterally serrated, anterior processes finely serrated. Hypostomal setae h1 very long (ca 34 μm), simple; h2 short (ca 12 μm), robust; h3 short (ca 14 μm), blunt; h4 short (ca 13 μm), curved, distally serrated ( Fig. 30 ). Hypostomal surface covered with fine denticles of various sizes distributed irregularly between setae h3–h4. Hypostomal groove smooth. Ventral setae pv1–pv2 on palp trochanters robust, pv1 ca 14 μm long, robust, blunt, pv2 ca 10 μm 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.

Legs. Structure and chaetotaxy typical for the genus ( Fig. 32 ). Tarsi II–IV subdivided into basitarsus and telotarsus by complete peripodomeric fissure. Setae al and pl on tarsus II and III serrated, on tarsus IV only pl serrated.

Male. Unknown.

Deutonymph. Partly sclerotised, colour yellowish to light brown.

Dorsal idiosoma ( Fig. 33 ). Length ca 501 µm, width ca 426 µm. Dorsal shield subcircular, smooth, marginal shield absent. Dorsal setae numerous, simple; some accompanied by circular pores. Between the setae ca 6 pairs of dorsal lyrifissures (id). Submarginal setae simple, those in posterior part inserted on small tubercles. Marginal setae very numerous, short, hook-like.

Ve n t r a l idiosoma ( Fig. 34 ). Sternal shield amphora-shaped, with distinctly widened base, extending behind coxae IV, lightly ornamented medially. Sternal setae st1–st5 very short. Two pairs of lyrifissures: iv1 near camerostome, iv2 behind setae st5. Ventral shield wide, smooth. Ventral setae short, v1 = length v2; setae v3 located close to anal opening. One pair of lyrifissures (iv3) located near setae v2. Anal shield triangular, anal opening covered by a small valve and a pair of very short setae Ad1. Setae Ad2 and Pa on shield surrounding anus, Ad2 = Pa. Peritreme long, with characteristic curve at level of coxae II, without poststigmatic extension, prestigmatic section (ca 141 μm long) reaching camerostome, stigmata at level of coxae III. Tritosternum typical for the genus.

Gnathosoma . Epistome narrow and serrated, distally bifid. Hypostome similar to female, except setae h2 simple and h3 serrated ( Fig. 35 ). Hypostomal denticles arranged in three rows between setae h2–h4.

Legs. Structure and chaetotaxy as for female.

Ecology. This species is widely distributed in Europe, in low altitude habitats. It was described from Germany, and has subsequently been recorded from Albania, Czech Republic, France, Germany, Poland, Slovakia and Ukraine ( Fig. 36 ), in the litter of oak-hornbeam forests and beechwoods. Wiśniewski & Hirschmann (1993) recorded this species in Lithuania, but this is a misidentification of specimens of Neodiscopoma as C. erlangensis . In Poland this species is never abundant ( Fig. 67 C). It occurs in mixed deciduous forests, lowland and Carpathian beechwoods, fir-beech forests, marshy meadows, oak-hornbeam forests, fir forests, and parks. It is occasionally also found in grasses on non-limestone rocks, thickets of various types, grasses on limestone rocks and in rotten tree trunks. Its optimum altitude is below 400 m a.s.l.

Figures

FIGURE 36. Distribution of Cilliba erlangensis in Europe. A = recorded distribution, B additional area of potential distribution.

FIGURE 67. Regional abundance of Cilliba species in geographical regions of Poland. Levels of shading represent the mean number of specimens of each species per sample (0.5 litres of seived leaf litter per sample). A = C. cassidea; B = C. insularis; C = C. erlangensis; D = C. rafalskii; E = C. sellnicki.

FIGURES 22 – 27. Cilliba cassidoidea. 22, male, ventral idiosoma; 23, male, hypostome; 24, male, leg II, posterolateral view; 25, deutonymph, dorsal idiosoma; 26, deutonymph, ventral idiosoma; 27, deutonymph, tritosternum (after Hirschmann & Zirngiebl-Nicol, 1969 a).

FIGURES 28 – 32. Cilliba erlangensis, female. 28, dorsal idiosoma; 29, ventral idiosoma; 30, hypostome; 31, tritosternum; 32, legs: I, anterolateral view, II, III, IV, posterolateral view.

FIGURES 33 – 35. Cilliba erlangensis, deutonypmh, 33, dorsal idiosoma; 34, ventral idiosoma; 35, hypostome.