Acaralox arundinaceus
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Ordo: Prostigmata
Familia: Eriophyidae
Genus: Acaralox
Name
Acaralox arundinaceus Skoracka, Anna, 2002 – Wikispecies link – Pensoft Profile
- Acaralox arundinaceus Skoracka, Anna, 2002, Zootaxa 54: 2-6.
Description
Description: Female (Figs 12) (holotype and 14paratypes): Body vermiform, anteriorly slightly enlarged. Dorsal furrow ending near 10 annulus from end of body. Body length 244 (215 285); width 59 (5366). Gnathosoma 26 (2430) long; dorsal pedipalpal genual setae 12 (1013) long; v setae (sensory peg) 2 (2) long; cheliceral stylets 24 (2326) long. Anterior half of prodorsal shield triangular, posterior half semicircular, lateral margins a little wavy, shield with a little rounded frontal lobe over base of chelicerae. Prodorsal shield 42 (3842) long, 48 (4653) wide. Sculpture of prodorsal shield: median line present in posterior 2 / 3 part of shield, in 1 / 3 anterior part of shield median line composed of separated small granules; admedian lines entire, sinuous; I submedian lines subparallel to admedian, running laterad just in front of tubercles of setae sc; II submedian lines sinuous and subparallel to lateral margin of shield; arched transversal lines between admedian, I submedian and II submedian lines. Small, semirounded microtubercles present on surface near shield. Tubercles of setae sc located on rear margin of shield, 3 (34) long, 3 (3) wide, 26 (2429) apart; setae sc52 (4753) long, projecting to rear. Leg I 37 40 (4048) long; femur 10 (1012) long, with seta bv14 (1116) long; position of seta bv4 (45) from ventral, proximal margin of femur; genu 7 (68) long, with seta l’’30 (2832) long, position of seta l’’4 (4) from dorsal, proximal margin of genu; tibia 9 (910) long, with seta l’10 (1017) long; position of seta l’6 (56) from ventral, proximal margin of tibia. Tarsus 9 (8 11) long, with three setae: ft’’28 (2833); ft’25 (2128) long, u’9 (810) long; tarsal solenidion 10 (1011) long; tarsal empodium simple, 8 (7 –8) –rayed, symmetrical, 12 (1113) long. Leg II 37 (3844) long; femur 11 (1012) long, with seta bv19 (1822) long; position of seta bv5 (56) from ventral, proximal margin of femur; genu 6 (56) long, with seta l’’19 (1420) long; position of seta l’’4 (34) from dorsal, proximal margin of genu; tibia 7 (78) long. Tarsus 9 (910) long, with three setae: ft’’29 (27 –30) long, ft’13 (1114), u’9 (610) long; tarsal solenidion 10 (1012) long; tarsal empodium 8 (7–8)rayed, symmetrical, 12 (1213) long. Coxae with a pattern of numerous, lines and granules; slender sternal line present. Setae 1 b13 (1214) apart, 9 (810) long; setae 1a 8 (710) apart, 30 (2330) long; setae 2a 26 (2430) apart, (4659) long; distance between setae 1 b and 1a 10 (1012), distance between setae 1 a and 2a 10 (910). Opisthosoma with 57 (5560) dorsal annuli, 63 (5762) ventral annuli, 5 (57) coxogenital annuli. Annuli with microtubercles; dorsal microtubercles subrounded, sparse, on furrow and ridge, more numerous on lateral side of body; ventral microtubercles rounded, located at a distance of margin of annuli, from level of setae f elongated. Setae c 2 55 (4557) long, located on 8 th (6 th 7 th) ventral annulus from coxae II; tubercles c 2 55 (4863) apart; ventral setae d64 (5774) long, located on 21 st (18 th 21 st) ventral annulus; tubercles d31 (2935) apart; setae e17 (1219) long, located on 35 th (33 rd – 35 th) ventral annulus; tubercles e17 (1719) apart; setae f29 (2330) long, located on 59 th (53 rd– 58 th) ventral annulus, 5 th (5 th) annulus from rear; tubercles f24 (1926) apart. Setae h 1 4 (24) long, 7 (68) apart; setae h 2 86 (86) long, 10 (1011) apart; distance between h 1 and h 2 –2 (2). Genital parts 15 (1519) long, 23 (2224) wide, genital coverflap with 11 (811) longitudinal striae; setae 3a 21 (1928) long, 16 (1518) apart. Male, nymph and larva not seen. Etymology: the specific designation is derived from the host plant specific name. Host plant: Phalaris arundinacea L. (Poaceae). Relation to host plant: mites live in leafsheaths, with a single specimen present on the upper leaf surface. Type locality: Poland, Poznañ, Cytadela (16 ° 56 ' E; 52 ° 25 ' N); not cultivated meadow; 28.11.1999; leg. A. Skoracka. Material examined: holotype female (ACAR380 F 7), 20 female paratypes ACAR380 F 1 ACAR380 F 6, ACAR380 F 8 ACAR380 F 21). Differential diagnosis: Acaralox arundinaceus is similar to A. harperi Keifer, 1966 (from Cercocarpus montanus var. glaber (S. Wats.) F. L. Martin, Rosaceae, California) by length and width of dorsal furrow and shape of microtubercles.
A. arundinaceus can be distinguished from A. harperi by the sculpture of the prodorsal shield and coxae and the shape of solenidia. In A. harperi the sculpture of the prodorsal shield and coxae is composed of granules, and solenidia have knobs at the end. In females of the new species lines on the prodorsal shield are entire, coxae are with ornamentation of granules and lines, and solenidia are without knobs. Those two species differ also in dimensions of the prodorsal shields (length 23 in A. harperi,42 in A. arundinaceus; width 25 in A. harperi,48 in A. arundinaceus), the number of empodial rays (5 in A. harperi,8 in A. arundinaceus), the lenght of legs I and II (21, 20 in A. harperi, 40, 37 in A. arundinaceus), the length of tibia I and II (4 and 3.5 in A. harperi,9 and 7 in A. arundinaceus), the lengths of setae: pedipalpal d (3.5 in A. harperi,12 in A. arundinaceus), sc (17 in A. harperi,52 in A. arundinaceus), l’ (3 in A. harperi,10 in A. arundinaceus), 3 a (5.5 in A. harperi,21 in A. arundinaceus), c 2 (13 in A. harperi,55 in A. arundinaceus), d (19 in A. harperi,64 in A. arundinaceus), e (5 in A. harperi,17 in A. arundinaceus), f (10 in A. harperi,29 in A. arundinaceus).
Notice: This species was found in Poland on P. arundinacea only. The intensity of its infestation was 78.6 (n= 22; 95 % CI: 43.8141.1) specimens per stem.
Taxon Treatment
- Skoracka, Anna; 2002: Two new species of eriophyoid mites (Acari: Eriophyoidea) from grasses in Poland, Zootaxa 54: 2-6. doi
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