Ameroseius georgei (Turk, 1943),

Masan, Peter, 2017, A revision of the family Ameroseiidae (Acari, Mesostigmata), with some data on Slovak fauna, ZooKeys 704, pp. 1-228: 1

publication ID

http://dx.doi.org/10.3897/zookeys.704.13304

publication LSID

lsid:zoobank.org:pub:111A101E-7405-4C40-8F51-693957A64D97

persistent identifier

http://treatment.plazi.org/id/71788313-EB98-74E3-E361-C2A3E2F3B99F

treatment provided by

ZooKeys by Pensoft

scientific name

Ameroseius georgei (Turk, 1943)
status

 

Ameroseius georgei (Turk, 1943)  Plates 17, 18

Epicrius canestrenii  (sic). - George 1906: 264.

Epicrius canistrinii  (sic). - George 1906: 266.

Epicrius canestrinii  . - Turk 1943: 859.

Cornubia georgii  (sic) Turk, 1943: 859 (nom. n. pro Epicrius canestrinii  Haller, 1881 sensu George, 1906). Incorrect synonymy with Ameroseius corbiculus  (Sowerby, 1806) by Turk 1953.

Ameroseius georgei  . - Turk 1953: 12.

Ameroseius imparsetosus  Westerboer (in Westerboer & Bernhard, 1963: 514). Syn. n.

Ameroseius imparsetosus  . - Karg 1971a: 231; Bregetova 1977: 150; Karg 1993: 229; Kontschán 2007: 101.

Type depository.

Of Cornubia georgei  - not stated; of Ameroseius imparsetosus  - not stated.

Type locality and habitat.

Of Cornubia georgei  - United Kingdom, England, Cornwall, habitat not stated; of Ameroseius imparsetosus  - Spain, Sierra de Ancares Mountains, moss and bark of fallen and standing old oaks.

Comparative material.

United Kingdom: 2 ♀♀ ( BMNH: E010147155, E010147156) - 1882, Ranmore, A. D. Michael Coll., R.z. 106-107, 1930.8.25.2204-2205 (originally labelled Acarina  , Gamasidae  , Epicrius  ; secondary added: Cornubia georgii  ).

Published material from Slovakia.

Malé Karpaty Mts.: Častá Village, Červený Kameň Castle ( Mašán 2001b, cited as Ameroseius imparsetosus  ).

New material from Slovakia.

Malé Karpaty Mts.: 2 ♀♀ - 10. 6. 2002, Bratislava Capital, zoological garden, oak-hornbeam forest ( Querco-Carpinetum  ), individual collecting on wood-destroying fungus Trametes  sp., altitude 180 m, leg. P. Mašán; 1 ♀ - 22. 5. 2013, Bratislava Capital, Železná Studienka Forest, broad-leaved deciduous forest, individual collecting on unidentified wood-decaying fungi, altitude 270 m, leg. P. Mašán; 10 ♀♀ - 20. 9. 2014, Borinka Village, broad-leaved deciduous forest, individual collecting on unidentified wood-decaying fungi, altitude 420 m, leg. P. Mašán. Podunajská Rovina Flatland: 1 ♀ - 21. 5. 1996, Bodíky Village, Kráľovská Lúka Forest, willow-poplar flood-plain forest ( Salici-Populetum  ), leaf litter and soil detritus, altitude 120 m, leg. P. Mašán; 123 ♀♀, 48 ♂♂ - 5. 5. 2013, Svätý Jur Town, Panónsky Háj Forest, oak forest ( Quercus  spp.), rotting wood-destroying fungi Meripilus giganteus  growing at base of old oak, altitude 130 m, leg. P. Mašán.

Remarks.

In his paper on the genus Epicrius  from Lincolnshire in England, George (1906) re-described and illustrated three species of which two are now regarded to be members of Ameroseiidae  . According to Evans (1955a), the species George believed to be Epicrius mollis  (Kramer, 1876) is actually Epicriopsis horridus  and what George identified as Epicrius canestrinii  Haller, 1881 has formerly been given the new name Cornubia georgei  by Turk (1943). Moreover, Turk (1943) proposed the new genus Cornubia  with his new species Cornubia ornata  as type species. Later, Turk (1953) regarded Cornubia  as being synonymous with Ameroseius  . At the same time, he synonymised the two apparently different species, originally included in Cornubia  ( C. ornata  and C. georgei  ), with Ameroseius corbiculus  . This interpretation is accepted here only in part because C. georgei  is considered to be a distinct and reliably distinguishable species. Therefore, it is removed from a synonymy with A. corbiculus  . George‘s original illustration in his paper (1906) is sufficiently detailed for the recognition of C. georgei  . This species can be characterised as having dorsal setae extremely long (for example, j6 almost reaching posterior margin of idiosoma, and J2 reaching apparently beyond posterior margin of idiosoma). Ameroseius imparsetosus  , based on a female from Spain and described by Westerboer (in Westerboer and Bernhard 1963), is in perfect agreement with what is reported by George (1906). A. georgei  resembles also Ameroseius elegantissimus  by Ishikawa (1984) from Japan. These two species can be easily distinguished by the number of elongate setae (11 pairs in A. georgei  , only eight pairs in A. elegantissimus  ).

I examined three slides ( BMNH.E.010147154-56) of Michael Collection deposited at the Natural History Museum, London, each bearing a specimen originally labelled Epicrius  and additionally specified as Cornubia georgii  (sic). The specimen from Port Garrah (on the slide BMNH.E.010147154) labelled „nymph” is unsuitable for adequate study, and definitely not conspecific with those on the remaining two slides. Other two female specimens from Ranmore are identical to one another, in very good condition to be easily recognised as Ameroseius imparsetosus  . Unfortunately, none of available slides bears a type designation and more specific collection data, but I believe that one female belongs to the authentic specimen of George (1906) because the original illustration of the dorsum with legs given by George (1906), for his Epicrius canistrinii  (sic), match perfectly one of the two available mounted specimens (on slide E010147156). Based on the above mentioned circumstances, a new synonymy is established between C. georgei  and A. imparsetosus  in present study.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Mesostigmata

Family

Ameroseiidae

Genus

Ameroseius

Loc

Ameroseius georgei (Turk, 1943)

Masan, Peter 2017
2017
Loc

Cornubia georgii

Turk 1943
1943
Loc

Ameroseius corbiculus

Berlese 1903
1903
Loc

Ameroseius georgei

Berlese 1903
1903
Loc

Ameroseius imparsetosus

Berlese 1903
1903
Loc

Ameroseius imparsetosus

Berlese 1903
1903
Loc

Epicrius canestrenii

Canestrini & Fanzago 1877
1877
Loc

Epicrius canistrinii

Canestrini & Fanzago 1877
1877
Loc

Epicrius canestrinii

Canestrini & Fanzago 1877
1877
Loc

Epicrius canestrinii

Canestrini & Fanzago 1877
1877