Cilliba rafalskii Bloszyk, Stachowiak & Halliday, 2006, sp. nov.

Abstract

Cilliba rafalskii sp. nov. (Figures 23–34) Cilliba cassideasimilis Bloszyk, 1984: 70 (nomen nudum). Cilliba species I: Bloszyk & Olszanowski, 1985: 488. Cilliba species II: Bloszyk, 1991: 118; 1992: 324; Bloszyk, 1995: 170; 1998: 99; 1999: 161. Uropoda (Cilliba) rafalski (sic): Wi ś niewski & Hirschmann, 1993: 193; Wi ś niewski, 1993: 259. Material examined. HOLOTYPE: female, Poland, "Jakubowo" Res. near Pniewy. Querco­carpinetum forest, UTM: WU 81, 8 October 1978, leaf litter, alt. 200 m a.s.l., coll. J. Bloszyk (JB­ 1445). PARATYPES: Poland (Figs 23, 24): 18 Ψ, 3 deutonymphs, 1 protonymph, same data as holotype; 8 Ψ, 5 deutonymphs, 6 protonymphs, "Jakubowo" Res. near Pniewy. Querco­carpinetum forest, UTM: WU 81, [4 samples, 1978–1979]; 114 Ψ, 65 deutonymphs, 41 protonymphs, 26 larvae, "Jakubowo" Res. near Pniewy, UTM: WU 81, [84 samples, 1973–2001]; 28 Ψ, 7 deutonymphs, 1 protonymph, Bytyń near Pniewy, UTM: WU 91, XU 0 1, [11 samples, 2001–2002]; 49 Ψ, 5 deutonymphs, 2 protonymphs, Upper Silesia, UTM: BB 0 0, 10, CA 0 9, [5 samples, 1987]; 36 Ψ, 3 deutonymphs, 4 protonymphs, Roztocze, UTM: FB 40, [4 samples, 1964–2001]; 36 Ψ, 2 deutonymphs, Bogucice near Pińczów, UTM: DA 16,79, [2 samples, 1968–1973]; 2 Ψ, Pieniny Mnts., UTM: DV 57, [2 samples, 1971–1975]; 29 Ψ, Beskidy Mnts., UTM: CA 84, CV 99, [2 samples, 1968–1975]; 1 deutonymph, 3 protonymphs, Lagów, UTM: WT 19, [1 sample, 2001]; 2 Ψ, 2 deutonymphs, Gudowo, UTM: WV 52, [1 sample, 1978]; 6 Ψ, 1 deutonymph, Lutomskie Lake near Sieraków, UTM: WU 72, [1 sample, 1972]; 2 Ψ, "Szumny Zdrój" Res. near Brodnica, UTM: DD 0 9, [1 sample, 1974]. Female. Well sclerotised, colour brown. Dorsal idiosoma (Fig. 25 A, 26 A, B). Length 771–843 µm (mean 813 µm), width 731–814 µm (mean 771 µm) (n = 32). Dorsal shield subcircular, smooth, with characteristic ornamentation of scattered circular pits in the posterior half. Marginal shield smooth, with numerous lyrifissures. Dorsal setae numerous, thick, lanceolate (mean 64 µm). Submarginal setae simple (mean 22 µm), marginal setae very numerous, short, hooklike. Ventral idiosoma (Fig. 25 B, 26 C, D). Sternal shield smooth, with a pair of anterior lyrifissures. Sternal setae simple; st 1 slightly above anterior edge of epigynium, st 2 – st 5 lateral to the epigynium. Epigynial shield tongue­shaped, with distinct central ornamentation. Length of epigynial shield 180–196 µm (mean 187 µm), width 120–140 µm (mean 131 µm); surface = 19495–21674 µm 2. Opisthosoma smooth, except for a punctate area near posterior border of epigynial shield. Five pairs of simple ventral setae arranged in two rows behind coxae IV. Ventral setae simple; seta v 1 shorter than v 2. Adanal setae Ad 1 and Ad 2 very short. Unpaired seta Pa shorter than Ad. Anal opening small, oval. Peritreme V­shaped, without poststigmatic section (prestigmatic section 101–183 µm in length); stigmata at level of coxae III. Gnathosoma. Epistome narrow and serrated, distally bifid. Hypostomal setae h 1 very long (41–69 µm), simple; h 2 short (14–21 µm), robust, smooth or finely pilose; h 3 (16–21 µm) one third length of h 1, smooth; h 4 short (11–19 µm), distally pilose, laterally serrated. Hypostomal denticles in a row between setae h 2 and scattered between h 3 and h 4. Ventral setae of palp trochanter robust, pv 1 twice as heavy as pv 2 (Fig. 27 A). Fixed digit of chelicera longer than movable digit, with anterior globular sensillum (Fig. 27 B). Base of tritosternum broad, with distinct shoulders, 6 ­branched, with finely serrated laciniae (Fig. 27 C). Legs (Fig. 27 D). Structure and chaetotaxy typical for the genus (Table 2). Leg I without claws, but with a very long terminal seta. Male. Unknown. Deutonymph. Partly sclerotised, colour yellowish to light brown. Dorsal idiosoma (Fig. 28 A, 29 A). Length 681–720 µm, width 629–646 µm (n = 3). Dorsal shield subcircular, smooth, marginal shields absent. Dorsal setae numerous, simple (length 54–66 µm); some accompanied by circular pores. Between the setae several dorsal lyrifissures (id). Submarginal setae numerous, simple (ca 36 µm). Marginal setae very numerous, short, hook­like. Ventral idiosoma (Fig. 28 B, 29 B). Sternal shield amphora­shaped, with narrow base, smooth (length 306–324 µm), extending beyond coxae IV. Sternal shield with five pairs of simple, short sternal setae (st 1 – st 5). Ventral shield wide, smooth, with five pairs of simple ventral setae; v 1 half as long as others. Anal shield triangular, anal opening covered by a small valve. Gnathosoma. Epistome narrow and serrated, distally bifid. Hypostome similar to adults (Fig. 30 A). Tritosternum 6 ­branched, with broad base (Fig. 30 B). Legs (Fig. 30 C). Structure and chaetotaxy as for female. Protonymph. Weakly sclerotised, colour white to yellowish. Dorsal idiosoma (Fig. 31 A). Length 476–503 µm, width 364–400 µm (n = 2). Podonotal shield pear­shaped, large (length 284–303 µm, width 174–192 µm), smooth. Mesopodal shields small, elongate (78–79 µm); mesonotal shields irregular in shape (diameter 88–95 µm); pygidial shield crescent­shaped (156–157 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; idiosoma surrounded by a soft outer fringe (width 99–105 µm). Several idiosomal setae with associated circular pores. Ventral idiosoma (Fig. 31 B). Weakly sclerotised, smooth. Sternal shield poorly defined, with three pairs of very short, simple sternal setae (st 1 –st 3). 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 146–152 µm), smooth, with anal opening, a single pair of Ad setae and unpaired Pa seta; Ad = Pa. Peritreme short, simple, without poststigmatic section (prestigmatic section straight, 70–82 µm in length); stigmata at level of coxae III. Gnathosoma. As for female, except hypostomal setae h 3 smooth and h 4 less serrated distally (Fig. 32 A). Tritosternum 6 ­branched, with broad base (Fig. 32 B). Legs (Fig. 32 C). Structure and chaetotaxy similar to female, except tarsus II with distal av and pv setae robust. Larva. Unsclerotised, colour whitish. Dorsal idiosoma (Fig. 33 A). Length ca 316 µm, width ca 250 µm. Anterior end of body with three distinct cuticular processes. Podonotal shield lanceolate, smooth. Two pairs of sclerites located below the podonotum. Dorsal setae j 1 –j 6 inserted on podonotal shield; j 1 long, recurved; j 2 –j 6 short, simple; J 2 bifid, inserted in soft pleura. 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 edge of podonotal shield, 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 R 2, S 4 and Z 4, which are spinose. Ventral idiosoma (Fig. 33 B). Sternal setae short, simple. Ventral setae v 1 short, simple, located above anal shield, v 5 bifid, 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, pair of adanal setae Ad and single postanal seta Pa; Pa = ½ Ad. Gnathosoma. As for female, except hypostomal setae h 3 and h 4 absent, h 2 long, smooth; hypostomal denticles pointed, scattered between setae h 2, hypostomal groove smooth. Palp trochanter setae pv 1 robust; pv 2 also robust, but bifid, short; pv 1 = 2 pv 2 (Fig. 34 A). Tritosternum 6 ­branched, with broad base (Fig. 34 B). Legs (Fig 34 C). Tarsus I with two robust proximal posterodorsal setae, one serrated distally, pd 2 = 2 x pd 1. Tarsus II with spinose ad 1 seta and robust ad 2, av 1 – av 2 and pv 1 setae. Genu III with spinose ad seta; all setae on tarsus III robust. Etymology. This species is named in honour of Prof. Jan Rafalski, creator of the Polish school of acarology.Published as part of 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), pp. 1-45 in Zootaxa 1219 on pages 27-36, DOI: 10.5281/zenodo.17250