Abacarus longilobus

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This page should be cited as follows (rationale):
Skoracka, Anna (2002) Two new species of eriophyoid mites (Acari: Eriophyoidea) from grasses in Poland. Zootaxa 54 : 6 – 13, doi. Versioned wiki page: 2016-09-27, version 101684, https://species-id.net/w/index.php?title=Abacarus_longilobus&oldid=101684 , contributors (alphabetical order): PlaziBot.

Citation formats to copy and paste

BibTeX:

@article{Skoracka2002Zootaxa54,
author = {Skoracka, Anna},
journal = {Zootaxa},
title = {Two new species of eriophyoid mites (Acari: Eriophyoidea) from grasses in Poland},
year = {2002},
volume = {54},
issue = {},
pages = {6 -- 13},
doi = {TODO},
url = {},
note = {Versioned wiki page: 2016-09-27, version 101684, https://species-id.net/w/index.php?title=Abacarus_longilobus&oldid=101684 , contributors (alphabetical order): PlaziBot.}

}

RIS/ Endnote:

TY - JOUR
T1 - Two new species of eriophyoid mites (Acari: Eriophyoidea) from grasses in Poland
A1 - Skoracka, Anna
Y1 - 2002
JF - Zootaxa
JA -
VL - 54
IS -
UR - http://dx.doi.org/TODO
SP - 6
EP - 13
PB -
M1 - Versioned wiki page: 2016-09-27, version 101684, https://species-id.net/w/index.php?title=Abacarus_longilobus&oldid=101684 , contributors (alphabetical order): PlaziBot.

M3 - doi:TODO

Wikipedia/ Citizendium:

<ref name="Skoracka2002Zootaxa54">{{Citation
| author = Skoracka, Anna
| title = Two new species of eriophyoid mites (Acari: Eriophyoidea) from grasses in Poland
| journal = Zootaxa
| year = 2002
| volume = 54
| issue =
| pages = 6 -- 13
| pmid =
| publisher =
| doi = TODO
| url =
| pmc =
| accessdate = 2020-02-09

}} Versioned wiki page: 2016-09-27, version 101684, https://species-id.net/w/index.php?title=Abacarus_longilobus&oldid=101684 , contributors (alphabetical order): PlaziBot.</ref>


Taxonavigation

Ordo: Prostigmata
Familia: Eriophyidae
Genus: Abacarus

Name

Abacarus longilobus Skoracka, Anna, 2002Wikispecies linkPensoft Profile

  • Abacarus longilobus Skoracka, Anna, 2002, Zootaxa 54: 6-13.

Description

Description: Female (Figs 3­4) (holotype and 9paratypes): body length 238 (185­296), width 62 (57­67), body spindleform. Dorsomedian ridge narrow, ending near 16 th dorsal annulus from end, dorsal furrow and lateral ridges ending near 6­7 th annulus from end. Gnathosoma 25 (22­30) long; dorsal pedipalpal genual setae d11 (10­12) long; v setae (sensory peg) 3 (2­3) long; ep setae 2 (2­3) long, chelicerae 22 (19­23) long, almost straight. Prodorsal shield elongate­triangular, 53 (47­57), long; 47 (44­52) wide, with pronounced, elongated frontal lobe over gnathosoma, 17 long. Sculpture of prodorsal shield: median line absent; admedian lines present only on posterior half of shield, parallel to each other; submedian lines entire only on anterior 1 / 3 and posterior 1 / 6 part of shield, parallel to lateral margins of shield. Distinct, conical microtubercles present on surface near shield. Tubercles of setae sc located on rear margin of shield, 2 (2­3) long, 3 (3­4) wide, 31 (27­ 31) apart; setae sc13 (8­12) long, projecting to rear. Leg I 40 (36­46) long; femur 10 (10­11) long, with seta bv15 (12­15) long; position of seta bv4 (4) from ventral, proximal margin of femur; genu 6 (6­7) long, with seta l’’26 (22­30) long, position of seta l’’4 (4) from dorsal, proximal margin of genu; tibia 8 (8­9) long, with seta l’10 (10­11) long; position of seta l’5 (4­5) from ventral, proximal margin of tibia. Tarsus 8 (8­9) long, with three setae: ft’’30 (25­30) long; ft’28 (21­27) long, u’7 (5­7) long; tarsal solenidion 10 (9­10) long; tarsal empodium simple, 8 (8­9)­rayed, symmetrical, 10 (10­12) long.


Leg II 40 (36­41) long; femur 11 (10­12) long, with seta bv21 (17­20) long; position of seta bv5 (4­5) from ventral, proximal margin of femur; genu 5 (5­6) long, with seta l’’12 (12­17) long; position of seta l’’3 (3­4) from dorsal, proximal margin of genu; tibia 7 (6­7) long. Tarsus 8 (8­9) long, with three setae: ft’’28 (22­27) long, ft’12 (10­14) long, u’6 (6­7) long; tarsal solenidion 10 (10­11) long; tarsal empodium 8 (8­9)­rayed, symmetrical, 10 (10­12) long. Coxae with a pattern of numerous lines and dashes, some lines with microtubercles; slender sternal line present. Setae 1 b10 (10­12) apart, 11 (11­13) long; setae 1a 9 (7­9) apart, 29 (24­28) long; setae 2a 25 (22­27) apart, 53 (46­52) long; distance between setae 1 b and 1a 7 (7­8), distance between setae 1 a and 2a 9 (8­10). Opisthosoma with 73 (66­74) dorsal annuli, 78 (68­81) ventral annuli, 6 (5­7) coxogenital annuli. Annuli with microtubercles; ventral microtubercles minute, conical and pointed, from level of setae f elongated; microtuberles on dorsal annuli bead­like, present only on ridges. Setae c 2 47 (38­48) long, located on 10 th (8 th– 10 th) ventral annulus from coxae II; tubercles c 2 63 (48­64) apart; ventral setae d67 (43­67) long, located on 26 th (21 st– 28 th) ventral annulus; tubercles d36 (33­40) apart; setae e48 (30­46) long, located on 47 th (40 th– 48 th) ventral annulus; tubercles e13 (11­16) apart; setae f40 (25­38) long, located on 74 th (64 th– 77 th) ventral annulus, 5 th (5 th) annulus from rear; tubercles f25 (23­25) apart. Setae h 1 5 (5­6) long, 8 (6­8) apart; setae h 2 83 (72­98) long, 13 (11­13) apart; distance between h 1 and h 2 –2 (2­3). Genital parts 17 (16­19) long, 24 (23­27) wide, genital coverflap with 11 (10­12) longitudinal striae; setae 3a 40 (30­43) long, 14 (13­17) apart. Male (Fig. 5) (10 specimens): body length 178­221; body width 46­60, spindleform; dorsomedian ridge shorter than in female. Gnathosoma 17­26 long; dorsal pedipalpal genual seta d8­10 long; v setae (sensory peg) 2 long; ep setae 2­3 long chelicerae 14­23 long, almost straight. Prodorsal shield elongate­triangular, 46­49 long; 38­46 wide, with pronounced, elongate frontal lobe over gnathosoma, which is shorter than those in female; pattern of shield similar to that of a female. Tubercles of setae sc located on the rear margin of shield, 2­3 long, 3 wide, 24­30 apart; setae sc9­11 long, projecting to rear. Leg I 32 ­37 long; femur 8­10 long, with seta bv8­14 long; position of seta bv3­4 from ventral, proximal margin of femur; genu 5­6 long, with seta l’’20­29 long; position of seta l’’3­4 from dorsal, proximal margin of genu; tibia 6­8 long, with seta l’8­10 long; position of seta l’3­5 from ventral, proximal margin of tibia. Tarsus 7­8 long, with three setae: ft’’22­29 long, ft’18­23 long, u’5­7 long; tarsal solenidion 8­10 long; tarsal empodium simple, 7­8 ­rayed, symmetrical, 9­11 long. Leg II 31­35 long; femur 9­10 long, with seta bv15­18 long; position of seta bv3­5 from ventral proximal margin of femur; genu 4­5 long, with seta l’’10­15 long; position of seta l’’2­3 from dorsal, proximal margin of genu; tibia 5­7 long. Tarsus 7 long, with three setae: ft’’21­28 long, ft’10­12 long, u’5­7 long; tarsal solenidion 8­10 long; tarsal empodium 7­8 ­rayed, symmetrical, 9­10 long.

Coxae with a pattern of lines and microtubercles on coxae I, dashes on coxae II. Setae 1 b9­10 apart, 7­10 long; setae 1a 6 ­ 9 apart, 19­29 long; setae 2a 19 ­ 21 apart, 40­52 long; distance between setae 1 b and 1a 6 ­ 8, distance between setae 1 a and 2a 7 ­ 9. Opisthosoma with 57­65 dorsal annuli, 58­69 ventral annuli, 5­7 coxogenital annuli. Annuli with microtubercles; dorsal microtubercels similar to that of female; ventral microtubercles tiny, conical, pointed. Setae c 2 36­46 long, located on 7 th­ 9 th ventral annulus from coxae II; tubercles c 2 45­ 51 apart; ventral setae d62­67 long, located on 18 th­ 22 nd ventral annulus; tubercles d26­ 29 apart; setae e24­40 long, located on 33 rd­ 38 th ventral annulus; tubercles e10­14 apart; setae f27­41 long, located on 54 th­ 65 th ventral annulus, 5 th annulus from rear; tubercles f19­24 apart. Setae h 1 4­5 long, 6­7 apart; setae h 2 67­81 long, 10­11 apart; distance between h 1 and h 2 –2. Genital parts 14­17 long, 19­21 wide; setae 3a 26 ­ 32 long, 14­17 apart; granulated. Nymph (Fig. 6) (6 specimens): body length 162­206; body width 44­60; spindleform. Dorsomedial ridge slender, ending near 6­7 th annulus from end. Gnathosoma 16­26 long; dorsal pedipalpal genual seta d6­8 long; v setae (sensory peg) 2 long; ep setae 3 long; chelicerae 17­20. Prodorsal shield with a elongated lobe over base of chelicerae; shield triangular, its posterior margin bowed; 37­41 long, 35­44 wide. Sculpture of prodorsal shield: median line absent; admedian lines parallel to each other near; submedian lines parallel to lateral margins of shield. Conical microtubercles present on surface near shield. Tubercles of setae sc2­3 long, 2­4 wide, located on rear margin of shield, 22­26 apart; setae sc7­10 long. Leg I 27­35 long; femur 6­9 long, with seta bv7­9 long; position of seta bv3­4 from ventral, proximal margin of femur; genu 4­5 long, with seta l’’18­25 long; position of seta l’’2­3 from dorsal, proximal margin of genu; tibia 5­6 long, with seta l’7­10 long; position of seta l’2.5­3 from ventral, proximal margin of tibia. Tarsus 5­6 long, with three setae: ft’’18­23 long; ft’14­18 long, u’4­6 long; tarsal solenidion 6­8 long; tarsal empodium simple, 6­7 ­rayed, symmetrical, 7­9 long. Leg II 23­32 long; femur 6­8 long, with seta bv11­13 long; position of seta bv3­4 from ventral, proximal margin of femur; genu 4­5 long, with seta l’’8­10 long; position of seta l’’2­3 from dorsal, proximal margin of genu; tibia 3­4 long. Tarsus 5­6 long, with three setae: ft’’17­20 long, ft’7­8 long, u’4­6 long; tarsal solenidion 6­9 long; tarsal empodium 6­7 ­rayed, symmetrical, 7­9 long. Coxae with a pattern of short, slender lines and conical microtubercles. Setae 1 b9­11 apart, 6 long; setae 1a 7 ­ 8 apart; setae 2a 20 ­ 24 apart, 30­35 long; distance between setae 1 b and 1a 6 ­ 8, distance between setae 1 a and 2a 7 ­ 8. Opisthosoma with 47­64 dorsal annuli, 45­60 ventral annuli, 7­8 coxogenital annuli. Annuli with microtubercles; dorsal microtubercles sparse on ridge, bead­like, near ridge conical, pointed; ventral microtubercles conical, larger than dorsal. Setae c 2 24­32 long, located on 6 th ­ 9 th ventral annulus from coxae II; tubercles c 2 40­ 54 apart; ventral setae d29­38 long, located on 15 th– 21 st ventral annulus; tubercles d25­32 apart; setae e10­25 long, located on 26­36 ventral annulus; tubercles e11­16 apart; setae f19­27 long, located on 41 st ­ 56 th ventral annulus, 5 th annulus from rear; tubercles f18­22 apart. Setae h 1 2­4 long, 5­6 apart; setae h 2 9­10 apart; distance between h 1 and h 2 –2. Setae 3a 8 ­ 13 long, 8­10 apart. Larva not seen. Etymology: the specific designation is derived from the combination of words: longus (Latin) – long and lobus, because of the very long lobe of the prodorsal shield over the gnathosoma in this species. Host plant: Bromus inermis Leyss. (Poaceae).

Relation to host plant: mites are vagrants on both leaf surfaces. Type locality: Poland, Poznañ, Cytadela (16 ° 56 ' E; 52 ° 25 ' N); scarp, southern exposition; 20.06.1999; leg. A. Skoracka. Material examined: holotype female (ABALON 248 F 7), 20 female partypes (ABA LON248 F 1­6, ABALON 248 F 8­19), 14 males (ABALON 248 M 1­14), 17 nymphs (ABA LON248 N 1­17). Differential diagnosis: The new species is most similar to Abacarus stadelbacheri Petanovic, 1993 (from Geranium dissectum L., Geraniaceae, Italy) by the shape of the lobe over the gnathosoma, coxae ornamentation and appearance of dorsal microtubercles. Both species have similar numbers of annuli: dorsal (72 in A. stadelbacheri, 73 in A. longilobus) and ventral (80 in A. stadelbacheri, 78 in A. longilobus), width of genitalia (24 in both species) and distance between 3 a setae (14 in both species). A. longilobus can be distinguished from A stadelbacheri by the sculpture of the prodorsal shield and length of the dorsomedian ridge. In A. stadelbacheri on the prodorsal shield are long admedian lines and the dorsomedian ridge is ending near ½ of the opisthosoma. In A. longilobus dorsomedian ridge is longer, the admedian lines are present only on the posterior part of the shield, and the submedian lines are also present. Besides, those two species differ in the width of the prodorsal shield (56 in A. stadelbacheri, 47 in A. longilobus), numbers of empodial rays (7 in A. stadelbacheri, 8 in A. longilobus), length of opisthosomal setae d: (38 in A. stadelbacheri, 67 in A. longilobus), e (16 in A. stadelbacheri, 48 in A. longilobus), f (25 in A. stadelbacheri, 40 in A. longilobus), 3 a (19 in A. stadelbacheri, 40 in A. longilobus). Notice: This species was also found on three other Poaceae species: Agropyron repens (L.) P. B., Arrhenantherum elatius (L.) P. Beauv. ex J. Presl & C. and Bromus erectus Huds. The greatest intensity of its infestation was on B. inermis –49.6 (n = 7; 95 % CI: 20.7 – 101.3) and on A. elatius –44.5 (n = 8; 18.5 – 97.0) specimens per stem. On other plants the mean number of specimens per stem was considerable lower: on A. repens –7.3 (n = 13; 2.0 – 20.3), on B. erectus –10.8 (n = 10; 3.6 – 28.9).

Taxon Treatment

  • Skoracka, Anna; 2002: Two new species of eriophyoid mites (Acari: Eriophyoidea) from grasses in Poland, Zootaxa 54: 6-13. doi
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