Cupacarus acutivagrans Skoracka

Skoracka, Anna, Macuk, Lucyna & Rakowski, Wojciech, 2004, New eriophyoid mites (Acari: Eriophyoidea) from sedges in Poland and supplement description of Eriophyes lentiginosus Mitrofanov, Sharonov et Sekerskaja, 1983, Zootaxa 446, pp. 1-15 : 2-7

Cupacarus acutivagrans Skoracka

DIAGNOSIS: typical prodorsal shield design of lines formed by microtubercles, empodium with 3rd ray from the base divided, genital coverflap anteriorly with 20 longitudinal striae and minute microtubercles, pedipalpal genual seta d very long.

FEMALE ( Figs 1­2 ) (holotype and 7 paratypes): Body spindleform. Opisthosoma with middorsal furrow distinct and subdorsal furrows slender. Body length 238 (220–282); width 76 (65–86). Gnathosoma 24 (26–28) long; dorsal pedipalpal genual seta d 18 (17– 19) long; ep seta 4 (3–5) long; cheliceral stylets 27 (26–28) long. Prodorsal shield rhomboidal, with triangular distinct lobe over base of chelicerae. Prodorsal shield 65 (63–67) long, 71 (62–71) wide. Shield design slender, lines formed by small subrounded microtubercles: median and admedian lines entire; I submedian lines parallel to admedian on anterior ¼ part of shield and divided forming network. Tubercles of setae sc 22 (19–25) apart, ahead of rear shield margin and directing setae centrad; setae sc 7 (7–10) long.

Leg I 42 (42–49); femur 12 (11–13), seta bv absent; genu 6 (6–7), seta l” 30 (27–30), position of seta l” 4 (4–5); tibia 10 (10), seta l’ 5 (5–7), position of seta l’ 4 (3–5). Tarsus 7 (8), setae: ft” 26 (24–25), ft’ 23 (19–21), u’ 5 (5–6). Tarsal solenidion 7 (7), distinctly knobed; tarsal empodium simple, symmetrical, 7 (7), 4 (4)rayed with 3rd ray from base divided. Leg II 41 (38–43); femur 13 (13–15), bv absent; genu 5 (5–7), l” 7 (8–10), position of l” 4 (3–5); tibia 9 (8–9). Tarsus 7 (7–8), ft” 26 (24–25), ft’ 5 (5–9), u’ 4 (3–5). Tarsal solenidion 7 (7–8), distinctly knobed; tarsal empodium 7 (6–7), 4 (4)–rayed, similar in shape to that of leg I.

Coxae with pattern of numerous minute microtubercles; sternal line slender. Setae 1b 17 (17­24) apart, 10 (10–14) long; setae 1a 9 (8–12) apart, 23 (22–30) long; setae 2a 30 (29­40) apart, 43 (46–48) long; distance between setae 1b and 1a 10 (10–12), distance between setae 1a and 2a 11 (10–15).

Opisthosoma with 40 (41–51) dorsal annuli, 67 (69–78) ventral annuli, 7 (7) coxogenital annuli. Dorsal annuli smooth, telosomal with elongated microtubercles. Ventral annuli with minute beadlike microtubercles, located on annuli margin, telosomal elongated.

Seta c2 14 (11–14) long, located on 11th (11th–12th) annulus; tubercles c2 61 (52–67) apart; ventral seta d 24 (21–26) long, located on 24th (27th–29th) annulus; tubercles d 40 (36–49) apart; seta e 17 (14–17) long, located on 42nd (45th–52nd) annulus; tubercles e 15 (13–22) apart; seta f 30 (28–33) long, located on 62nd (64th­73rd) annulus, or 6th (6th) annulus from rear; tubercles f 22 (20–25) apart.

Setae h1 5 (4–5) long, 5 (5–6) apart; setae h2 all broken, 8 (8–10) apart; distance between h1 and h2 2 (2–3).

Genital parts 21 (21–23) long, 22 (21–24) wide, genital coverflap with 20 (18–20) longitudinal striae and minute microtubercles anteriorly, posteriorly smooth; setae 3a 19 (18– 22) long, 13 (13–17) apart.

MALE ( Fig. 2 ) (3 specimens): body length 157–200; body width 50–60. Body shape similar to that of female; opisthosomal furrows less distinct than that of female. Gnathosoma 18–23 long; dorsal seta d 16–17 long; ep seta 3 long; chelicerae 18–22 long. Shape and design of prodorsal shield similar to that of female, design more distinct. Shield 46–56 long; 48­52 wide. Tubercles of setae sc 16 apart, ahead of rear shield margin and directing setae centrad; setae sc 4–6 long.

Leg I 33 –41; femur 10; genu 6, seta l” 25–29, position of seta l” 4; tibia 8–9, seta l’ 5, position of seta l’ 4–5. Tarsus 5–7, setae: ft” 19, ft’ 14–16, u’ 4–5. Tarsal solenidion 6–7, knobed; tarsal empodium 5–7, 4­rayed, shape similar to that of female. Leg II 32 –39; femur 10–11; genu 6, l” 9–10, position of l” 4; tibia 7–8. Tarsus 6–7, ft” 19–22, u’ 4–5. Tarsal solenidion 8, knobed; tarsal empodium 6–7, 4­rayed, shape similar to that of female.

Coxae with a pattern similar to that of female. Setae 1b 12–15 apart, 10 long; setae 1a 7–8 apart, 25–29 long; setae 2a 25–31 apart, 42–43 long; distance between setae 1b and 1a 9–10, distance between setae 1a and 2a 10–12.

Opisthosoma with 48–49 dorsal annuli, 61–62 ventral annuli, 10 coxogenital annuli. Annuli microtuberculate, similar to that of female.

Seta c 2 11–13 long, located on 12th13th annulus, tubercles c2 39–48 apart; ventral seta d 23­24 long, located on 24th–25th annulus; tubercles d 29–34 apart; seta e 16–19 long, located on 38th annulus; tubercles e 10–13 apart; seta f 24–29 long, located on 56th­57th

annulus, or 6th annulus from rear; tubercles f 19–20 apart.

Setae h1 3–4 long, 4–5 apart; setae h2 all broken, 7–8 apart; distance between h1 and h2 2.

Genital parts 11–13 long, 16–19 wide; setae 3a 13–18 long, 11–14 apart; surface below the genital opening with minute beadlike microtubercles.

NYMPH (3 specimens): body spindleform, 168–217 long. Dorsal furrows slender. Gnathosoma 19–24 long; chelicerae 19–21 long. Shape and design of prodorsal shield similar to that of female. Shield 48 long. Tubercles of setae sc 25–26 apart, ahead of rear shield margin and directing setae centrad; seta sc 5–6 long.

Leg I 30–33; femur 8; genu 5, seta l” 25–26, position of seta l” 3; tibia 7; tarsus 6–7, seta ft” 24–25. Tarsal solenidion 5 long, knobed; tarsal empodium 5, simple, symmetrical, 3­rayed. Leg II 29–31; femur 8; genu 5, l” 8–9, position of l” 3; tibia 5; tarsus 6. Tarsal solenidion 5, knobed; tarsal empodium 5, 3­rayed.

Coxae nearly smooth, with few microtubercles, sternal line absent. Setae 1b 16 apart, 10 long; setae 1a 8 apart; setae 2a 26 apart, 33 long; distance between setae 1b and 1a 9, distance between setae 1a and 2a 7.

Opisthosoma with 51–54 dorsal annuli, 57–59 ventral annuli, 9–15 annuli to 3a setae. Dorsal and ventral annuli with minute, beadlike microtubercles, set along annuli margins ( Fig. 2 ).

Seta c 2 8–10 long, located on 11th–13th annulus; ventral seta d 19 long, located on 23rd24th annulus; seta e 11–16 long, located on 36th annulus; seta f 18–24 long, located on 52nd–54th annulus, or 5–6th annulus from rear.

Setae h1 3 long. Setae 3a 8–9 long, 8 apart.

LARVA (1 specimen): body length 130; spindleform. Dorsal furrows slender. Gnathosoma 18 long, pedipalpal seta d 8 long; chelicerae 17. Shape and design of prodorsal shield similar to that of nymph. Shield 41 long. Tubercles of setae sc ahead of rear shield margin and directing setae centrad; seta sc 5 long.

Leg I 19; leg II 16; tarsal solenidion I and II 3, knobed; tarsal empodium I and II 3, 3­rayed, symmetrical.

Coxae similar to that of nymph. Opisthosoma with 37 dorsal annuli, 36 ventral annuli. Annuli with microtubercles similar to that of nymph.

Seta c2 5 long; ventral seta d 8 long; seta e 5 long; seta f 9 long; seta 3a 4 long.

TYPE MATERIAL: holotype female, 7 female paratypes, 5 males, 4 nymphs, 1 larva

TYPE HOST: Carex acutiformis Ehrh. (Cyperaceae)

RELATION TO HOST PLANT: mites are vagrants on upper leaf surfaces.

TYPE LOCALITY: West Poland, Poznań, Lasek Marceliński forest, wet meadow; 30.06.1999; leg. A. Skoracka. Material collected: 39 females, 18 males, 6 nymphs, 4 larvae.

ETYMOLOGY: the specific name is derived from the combination of “ acutiformis ” specific name of the host plant and “vagrant” the life style of the mite.

REMARKS: Up to now six species belonging to genus Cupacarus have been described, but none from sedges ( Amrine & Stasny 1994; Huang 2001; Łabanowski & Soika 2002). Boczek and Chyczewski (1977) found Cupacarus species on Carex nigra in Poland, but they did not describe it.

Epitrimerus carexis Petanovi č, 1995

Carex acutiformis Ehrh ; West Poland, Poznań, Lasek Marceliński forest, wet meadow near pond; 30.06.1999; leg. A. Skoracka; 17 specimens, vagrants on upper leaf surfaces.

The species so far was recorded in Yugoslavia on C. acutiformis as a vagrant on ears ( Boczek & Petanovič 1995).

Figures

FIGURE 1: Cupacarus acutivagrans n. sp. female: D—dorsal aspect; em—empodium; IG—internal genitalia; PV—postero­ventral region; s—solenidion

FIGURE 2: Cupacarus acutivagrans n. sp. CG—coxigenital region of female; GM—genital region of male; NM—microtubercles of nymph; PS—prodorsal shield of male