Cheiridium tetrophthalmum Daday, a new synonym of Larca lata (Hansen) (Pseudoscorpiones, Larcidae)

2011·2.6 MB·English

by  Mark S Harvey

1 1
Arachnologische Mitteilungen41:31-33 Nürnbergjuli 201
Cheiridium tetrophthalmum Daday, a new synonym ofLarcalata (Hansen)
(Pseudoscorpiones, Larcidae)
MarkS.Harvey
doi:10.5431/aramit4104
Abstract:Cheiridiumtetrophthalmum Daday, 1889 is removed from the synonymyofGeogarypusminor(L.Koch, 1873),
and treated as a junior synonym ofLarcalata (Hansen, 1884).The distribution ofLarcalataand Geogarypusminoris
documented,andL.latais recordedfrom Hungaryforthefirsttime.
Keywords: Faunistics,Geogarypusminor,Hungary
The pseudoscorpion Cheiridium tetrophthalmum was ral History, Budapest, even though material ofother
described by DADAY (1889) from an unspecified species described by Daday are lodged there (Danyi
numberofspecimenscollectedbyDrJoh.Pavelfrom in litt.).Therefore, it seems that the type material of
theHungariantownofVadewithin SomogyCounty C. tetrophthalmumiseitherlostorcannotcurrentlybe
(“Somogymegye”). Vade, which is nowadays known identified amongstthe collection.
as Vadepuszta, is a part ofthe settlement ofGamas Cheiridiumtetrophthalmumisclearlynotamember
(Dr L. Dänyi, Hungarian Museum ofNatural His- ofthegenus CheiridiumorevenofthefamilyCheiridi-
tory, Budapest, in litt.). Therefore, the type locality idaeascurrentlydefined.Nocheiridiidhastwopairsof
ofC. tetrophthalmumis here regarded as Vadepuszta, eyes,asalldescribedspecieshaveasinglepairofsmall
Gamas(46°37’N,17°46’E),SomogyCounty,Hungary. eyes(e.g.BEIER1932,VlTALI-DICASTRI1962,BEIER
HARVEY (1991, 2009) inadvertently listed Vade as 1963a,Benedict1978,Dumitresco&Orghidan
occurringin Portugal. 1981,Mahnert 1982,Harvey 1992).
The only other report of C. tetrophthalmum as BEIER’s(1932)decisiontoincludeC.tetrophthalmum
a valid species was by DADAY (1918) who listed it withinG.wzVzorwasundoubtedlybasedonthepresence
amongstthepseudoscorpionfaunaofthe Hungarian offoureyesandthestronglytriangularcarapace.Atthe
Empire which at the time spanned several modern timeofthesynonymy,G.minorwasknownfromseveral
daycountriesinsouth-eastern Europe.BEIER(1932) southern European countries, so the synonymy was
treated C. tetrophthalmumasajuniorsynonymofGeo- geographicallyacceptable.The drawings ofC. tetroph-
garypusminor(L.Koch, 1873),whereithasremained thalmumbyDADAY(1889)donot,however,resemble G.
ever since. Geogarypus was at the time included in minororanyothergeogarypid.Thepedipalpalsegments
Garypidae but has since been placed within Geo- ofG.minorsrelativelyrobust,e.g.femur3.3-3.4xand
garypidae (HARVEY 1986,2009). patella 2.8x longer than broad (BEIER 1932, 1963a),
DADAY’s (1889) descriptionofC. tetrophthalmum whereas the pedipalps of C. tetrophthalmum are more
is inadequatebymodern standardsbuthewas one of slender,e.g.femur4.4xandpatella3.lxlongerthanbroad
thefew19thcenturypseudoscorpiontaxonomistswho (DADAY1889,calculatedfromfig.10).Furthermorethe
providedillustrationsofsomeofthetaxahedescribed. shapeofthechelaeistotallydifferent.Theparaxialface
The original description was provided in Latin and ofthe chelal hand ofG. minorand most othergeoga-
Hungarian, with illustrations ofthe pedipalps, cara- rypidsisnoticeablyconvex,thechelalfingersareslighdy
pace,setae,pedipalpaltrochanterandcheliceralgalea. curvedindorsalviewandarelongerthanthechelalhand
The type material cannot be located amongst the (BEIER 1932, 1963a). In G. tetrophthalmum the chelal
pseudoscorpionsintheHungarianMuseumofNatu- handiscylindricalwithnotraceofaparaxialconvexity,
thechelalfingersarelessstronglycurvedandthefingers
MarkS.HARVEY,DepartmentofTerrestrialZoology,Western arenoticeablyshorterthanthehand(DADAY1889).
AustralianMuseum,LockedBag49,Welshpool DC,Western Itis clearthat G. tetrophthalmumis notasynonym
Australia6986,Australia;DivisionofInvertebrateZoology,
AmericanMuseumofNaturalHistory;CaliforniaAcademyof ofG. minororindeedamemberofthe Geogarypidae.
Sciences,SanFrancisco;SchoolofAnimalBiology,Universityof Theillustrations depictinsteadaspeciesofthefamily
WesternAustralia,Crawley,WesternAustralia6009,Australia. Larcidaewhichhaveallofthepedipalpalfeaturesnoted
E-mail:[email protected]
above, as well as four eyes and a triangular carapace.
eingereicht:20.2.2011,akzeptiert:21.3.2011;onlineverfügbar:30.5.201 The sole genus ofLarcidae reported from Europe is
32 M.Harvey
only other species ofLarcidae are found
in North America where five species of
ArcheolarcaandfourspeciesofLarcahave
been described (HARVEY2009).
Although the description of C.
tetrophthalmum by DADAY (1889) lacks
sufficient detail to ascertain its true
identity, it is reasonable to assume that
Cheiridium tetrophthalmum is a synonym
ofLarca lata, as there is only one larcid
species currentlyrecognised in northern,
central and eastern Europe.Accordingly,
these two names are considered to be
synonyms (newsynonymy).
Fig.1:RecordeddistributionofLarcalata(Hansen).ThetypelocalityofC.tetroph The material studied by DADAY
thalmumDadayisindicatedwithanarrow. (1889) represents the only specimens of
L. lata thus far recorded from Hungary.
The description of C. tetrophthalmum
in 1889 represents the second published
record ofa larcidwhich is onlypredated
byHANSEN’s(1884)descriptionofLarca
lata(asGarypuslatus)fromDenmark.The
firstNorthAmericanlarcid,L.granulata
(Banks, 1891) was described two years
laterfrom NewYork(BANKS 1891).
The removal of C. tetrophthalmum
from the synonymy of Geogarypus minor
alsoremoves G.minorfromtheHungarian
fauna. HARVEY (2009) reported G. minor
from a variety ofsouthern European and
north African countries, but two entries
Fig.2:RecordeddistributionofGeogarypusminor(L.Koch).TheCroatian appear to be incorrect. The record from
record(represented by'?')isapproximateasitisbasedonacountryre-
cordonly.TheAustrian record (indicatedwithanarrow) mayrepresent Sudanis incorrect, and I cannotnowfind
a populationthathasfailedtosurvive. anyrecords from that country.The speci-
mensdescribedas G. minorbyTULLGREN
Larcawhichisknownfromfivecave-dwellingspecies, (1907) from Gebelein, Egyptrepresentthe onlyrecord
L. bosselaersi Henderickx 8c Vets, 2002 from Crete, ofthisspeciesfrom Egypt.Theyareconsiderablylarger
L.fortunata Zaragoza, 2005, L. hispanica Beier, 1939 than G. minor,forexample,thepedipalpalfemurofthe
and L. lucentina Zaragoza, 2005 from Spain, and L. Egyptianspecimensisreportedtobe0.74(d)and0.77
mm mm
italicaGardini,1983fromItaly,andtheepigeanL.lata (9) long,whereas G.minorhasalengthof0.60
(Hansen, 1884).Larcalatais knownfrom avarietyof (BEIER1963a).Also,thepedipalpalchelashapeisquite
European locations, within the following countries: differentwithanevenlyconvexparaxialhandmarginin
Austria, Bulgaria, Czech Republic, Denmark, Ger- theEgyptianspecimens(TULLGREN1907,fig.2)anda
many, Latvia, Netherlands, Poland, Romania, Slova- moreangularparaxialmargininG.minor(BEIER1963a).
kia, Sweden and United Kingdom (HARVEY 2009, Therefore,thespecimensfromEgyptareexcludedfrom
CHRISTOPHORYOVÄ et al. 2011) (Fig. 1), and has G. minorandthisspeciesisexcludedfromtheEgyptian
been most recently redescribed byJUDSON &,LEGG fauna.Tullgren’sdescriptionseemstobetterfitthatofG.
(1996),TOOREN (2001) and CHRISTOPHORYOVÄet mireiHeurtault,1970fromChadorG.pulcherBeler,1963
al. (2011). Apopulation ofan unidentified species of fromtheMiddleEast(BEIER1963b,HEURTAULT1970),
Larca has also been reported from a cave in southern butamoredetailedscmtinyofthe Egyptianspecimens
France (LECLERC 1979; HEURTAULT 1986). The isrequiredtoascertaintheiractualidentity.
Cheiridiumtetrophthalmum,syn.nov.ofLarcalata 33
The distribution of G. minorbased on published des Expeditions Biospeologiques Cubano-Roumainesä
recordsisshowninFig.2.ItrangesfromMadeiraand Cuba,3.EdituraAcademieiRepubliciiSocialisteRoma-
the Canary Islands in the west toTurkey in the east, nia,Bucaresti.Pp. 77-87
with Austria as the most northerly record. The sole HANSEN H.J. (1884): Arthrogastra Danica: en monogra-
Austrianrecord,from Dörnbach nearVienna (BEIER phisk fremstilling afde i Danmark levende Meiere og
1929),was suggestedbyMAHNERT(2004) tobeper- Mosskorpionermedbidragtilsidstnaevnteunderordens
hapsbasedon anintroducedpopulationthatfailedto systematic. -NaturhistoriskTidsskrift(3) 14: 491-554
HARVEYM.S. (1986):TheAustralianGeogarypidae,new
survive, as no further Austrian specimens have been
status,withareviewofthegenericclassification(Arach-
reported since the original collection. It is likely that nida:Pseudoscorpionida).-AustralianJournalofZoology
someolderliteraturerecordsarebasedonmisidentifi- 34: 753-778-doi:10.1071/Z09860753
cationswith other species ofGeogarypus,in particular HARVEYM.S.(1991):CatalogueofthePseudoscorpionida.
with G. nigrimanus(Simon, 1879) (G. Gardini andJ. ManchesterUniversityPress,Manchester,vi,726pp.
Zaragozainlitt.). HARVEY M.S. (1992): The phylogeny and classification
of the Pseudoscorpionida (Chelicerata: Arachnida).
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