Two new species of Sabaconidae (Ischyropsalidoidea) are described: Sabacon # 1
from central Alberta and British Columbia and Sabacon # 2 from Oregon. Descriptions of the
females of Sabacon astoriensis Shear 1975, from Oregon, and Sabacon sheari Cokendolpher
1984, from Oregon and Idaho, are also given

Buckle, Donald J.

Holmberg, Robert G.

Athabasca University Library Institutional Repository

Two New Species of Sabacon Harvestmen, with Descrip-tions of the Females of Sabacon astor;ens;s Shear and Sa-bacon shear; Cokendolpher, from Western North America(Arachnida, Opiliones, Sabaconidae)Robert G. HolmbergCentre for Science, Athabasca Univ., Athabasca, Alberta, CanadaDonald J. Buckle620 Albert Street, Saskatoon, Saskatchewan, S7N lG7, CanadaTwo new species of Sabaconidae (Ischyropsalidoidea) are de-scribed: Sabacon # 1 from central Alberta and British Colum- ,bia and Sabacon # 2 from Oregon. Descriptions of the females ofSabacon astoriensis Shear 1975, from Oregon, and Sabaconsheari Cokendolpher 1984, from Oregon and Idaho, are also de-scribed.Newsletter of the American Arachnological SocietyAnlericanArachnologyNumber 68 April 20046

Two new species of Sabacon harvestmen, with descriptions of the females of Sabacon astoriensis Shear and Sabacon sheari Cokendolpher, from Western North America. (Arachnida, Opiliones, Sabaconidae).

Two New Species of Sabacon Harvestmen, with Descriptionsof the Females of Sabacon astoriensis Shear and Sabaconshear; Cokendolpher, from Western North America(Arachnida, Opiliones, Sabaconidae)Robert G. HolmbergCentre for ScienceAthabasca UniversityAthabasca, AlbertaT9S 3A3, CanadaE-mail:robert @athabascau .caDonald J. Buckle620 Albert StreetSaskatoonSaskatchewanS7N 1G7, CanadaE-mail:djbuckle @shaw.com,,<'.;;".,.~Abstract: Two new species of Sabaconidae (Ischyropsalidoidea) are described: Sabacon # 1from central Alberta and British Columbia and Sabacon # 2 from Oregon. Descriptions of thefemales of Sabacon astoriensis Shear 1975, from Oregon, and Sabacon sheari Cokendolpher1984, from Oregon and Idaho, are also given.Species Already Described: There are about 35 species described - all from temperate regionsof the Northern Hemisphere (Chemeris & Logunov 2000; Martens 1972, 1983; Shear 1975; Suzuki1974; Tsurusaki & Song 1993 and references therein).There are eight Sabacon species described from North America, mostly from the west coast: S.astoriensis Shear 1975, S. branti (Banks 1898), S. briggsi Shear 1975, S. cavicolens (Packard1884), S. mitchelli Crosby & Bishop 1924, S. occidentalis (Banks 1894), S. sheari Cokendolpher1984, and S. siskiyou Shear 1975. There is a ninth possible species in North America, S. jonesiGoodnight & Goodnight 1942, that was described from an immature specimen (see Shear 1975).Methods: Specimens were obtained from the Canadian Forest Service, Northern Forest Centre,Edmonton, Alberta; Canadian National Collection of Terrestrial Arthropods, Agriculture andAgrifoods Canada, Ottawa, Ontario (CNC); and the personal collections of Chris Buddie, JamesCokendolpher and Robert Holmberg. Measurements were taken with a stereomicroscope fitted withan ocular micrometer. All measurements are maxima. Measurements, all made at 25 X or 50 X, areall reported to the nearest 0.1 mm. All measurements were made, and colours noted, when thespecimens were in 70-75% ethanol. Nadine Duperre did the illustrations. She first photographed thespecimens and then traced the enlarged images before shading the drawings in pencil. Shechecked details with magnifications up to 150X.Introduction: Harvestmen of the genus Sabacon are small, short-legged arachnids with relativelylarge, clubbed palps that are covered with stout setae. They have two small cones with spineslocated just behind the ocular tubercle, on the posterior of the cephalothorax (i.e., on themetapeltidium) (Shear 1986).I I1mmFigure 1: Lateral view of female Sabacon # 1.IDescriptions of New Species: Sabacon # 1, male.ABcBiIi/i"/0EFigure 2. Sabacon # 1, male. A = dorsal view of body, 8 = ectal view of left Figure 3. Sabacon # 1, penis. A & C= lateralchelicera, C = mesal view of left chelicera, D = mesal view of left al . views, 8 & D= dorsal, E = ventral.03A,T , T ,,-J;' ~ r'"?' < '\T ~T~'r ~ ,1 TT T T i, ,T" ,,',1 ,TT~' , ,..-331 I" ,.-,~T ,A 4~",~~BcFigure 4. Sabacon # 1 , female. A = dorsal view of body, B = ectal viewof left chelicera, C = mesal view.Descriptions of New Species: Sabacon # 2, from one male and one female collected inClackamas County, Oregon.AI"'-II..-IFigure 5. Sabacon # 2, male. A = dorsal view of body, B = ectalview of left chelicera, C = mesal view, D = ectal view of left palp, E= mesal.,;..~ ;~\)" ~ J;- .r. ~AA ,., "". [iF)' --r:::''''' '.':"1-""':, -:\z r .or.. ,I~Ih " -~ LJ;':- );...,,~~'; .t l'~~ l ' r T,1~T T ''t.\'I ' r T 1?f --"\ .-"- .~-\.':ll1.~ i' , ~""'1 'r T rlr..-,=:... jr T T T ,~~ ~]pr 1 1 1 \7 ..-v v~~,Ti~ \7'1T t, r T .~J1r T , .,~.., r"'"'rT r TT1. ,~~~ r1 T i r T TT T,-~TT T,1 r 1T~: .T.~T r T~.BI 05~ IFigure 6. Sabacon # 2, female. A = dorsal view ofbody, B = ectal view of left chelicera, C = mesal.view.Descriptions of New Species: Sabacon # 2 and collection sites for three species.,.-"Jr"\~, ~ ~J"\...I- ,!r~- ---~iA ....~' "-I-- I", \ i-~..,~ -~\ \.'... 0""" - -' J.l1 " " .-:t.~~- -'L~. 1-. \, .-/ .''\}--.' I _.1, 'Ii ."-'--~' "\--~~---"..." ~"-I(<rJ '\; ,.'J.v ,-/~._"-";-~'.:'._O\/. 't. r- \..~'\. JI.~'~',- - -.'C / ' r ---...-$'-1 / .. {~ ( ):J ~ ;)(,./ / {7';, -fs(~J ) i - -- .""'.- L_.5~;.y{/ ) Jj~y, -.3y--'. J: t .~J, -_.~ !:~:--!~ r~.~ tJ~)--- (~'--- I -. .- 0 .'v -r--,~o-.- -i" ---./ I,. I--."'I'. I I~'.7'..-..,--- r", " ,,-- ,,--.\ I Y (v I.' i ,'_l ~v- '.! 'L -~ ,I ' ~ -~ ~" . -'- -.- ,~ ! .~ . "',0 \[ ' ~:::--/._l- - ~. ' r' '~I: ,:"\ r-:,.9' ~. . ~~~ ~ ,.--..,~'..) I . '-,..L.I~' (') ~Figure 8.Collection sites for three species of Sabacon.),~];~"~~~1~0'"33AcSabacon # 2 .S. astoriensismale <0female ~0 S. shearimale <t.female 01"Figure 7. Sabacon # 2, penis. A & C = lateralviews, B &D = dorsal, E = ventral.Description of Undescribed female: Sabacon astoriensis from one female collected from DelNorte County, California.A:: i'~-..48~<~j.~ T ;; t. ,..,," ~~~"~~('" .-'.~-;f~:~~-'.:. -T .-. iT ~ iT~"'T i"... .,~-BThe holotype male was collectedfrom near Astoria, Oregon (Shear1975). The false articulations of theleg femurs and the relatively slim,straight palpal segments place thisfemale with the described male.Figure 9. S. astoriensis, female. A = dorsum, C & D = ectal and ectalmesal views of left chelicera, D & E = ectal views of left al .Description of Undescribed female: Sabacon sheari from one female collected from TillamookCounty, Oregon and one female from Idaho County, Idaho.B33AThe holotype male wascollected from Benton County,Oregon (Cokendolpher 1984).The conspicuous slit sensillaeon the mesal surface of thebasal segment of the cheliceraehelp place these females withthe described female.Figure 10. S. sheari, female. A = dorsum, C & D = ectal and ectal mesal viewsof left chelicera, D & E = ectal views of left al .Ovipositors.t> e~" "~. ~\\hlill III/Iff!\\l\IIII,1 [ I111,\ 1/11'\IUII/ {I 111\\ \/1~J'11'11111 111\ \1'/\\ .111111 \111 j If..\ II I \ II!'1\\ \ III \ \ \ ,I JJ;\)1 \ 11\ ) I'llII\\\I jllil \II/Ij'{\ \ \ \ II \ \ I / I /.~\ \ I \ 1,1 I,ll/I / ~:\ 1\ Ii II \ 11/1/ I\\ \ I1I11 I III1 /11\ \ I { \ I/ I\ \ \ III, \} II JII\ \ \ \ I II \ II / I;.\ \ I [I iI \\ III I JII! ''II \ \ \ II ,II j J IJ)i\1\lhl'\ 1)1//// J B~Ij:~li~\\~\ 0.11~IIIIN\ \~\.~IIvi ~(\! hill'\.l!filVWI11\\\~~~\11.Illd(f{f.fJ\\\\\\~'1'l!J{~!iIIW1\\\H\W\,tI~lldil I I I'll \11\\ 1\\\1 ;\Ih,cEEL{)aFigure 11. Ovipositors. A= Saba con # 1 , 8 = S. astoriensis, C = tip of S. sheari, and D= ti of Saba con #2.Note that ovipositors arevery fragile and oftenbreak off during removal.Thus lengths are not agood characteristic fordifferentiating species.Acknowledgments: We thank James Cokendolpher for the specimens from USA and his.suggestion that we describe the new species and undescribed females. We thank Nadine Duperrefor the illustrations. We also acknowledge the various collectors. Athabasca University suppliedfinancial assistance.Literature Cited:Chemeris, A.N. & D.V. Logunov. 2000. Notes on two species of Sabaeon Simon, 1879 from the mountains of southSiberia (Arachnida: Opiliones: Sabaconidae). Arthropoda Selecta, 9(3):207-213.Cokendolpher, J.C. 1984. A new species of Sabaeon Simon from Oregon (Arachnida: Opiliones: Sabaconidae).Canadian Journal of Zoology, 62:989-991.Edgar, A.L. 1990. Opiliones (Phalangida). pp. 529-581. In: Dindal, D.L. Soil Biology Guide. New York: John Wiley &Sons.Martens, J. 1972. Opiliones aus dem Nepal-Himalaya. I. Das Genus Sabaeon Simon (Arachnida: Ischyropsalidae).Senckenbergiana biologica, 53(3/4) :308-323.Martens, J. 1983. Europaische Arten der Gattung Sabaeon Simon 1879 (Arachnida: Opiliones: Sabaconidae).Senckenbergiana biologica, 63(3/4) :265-296.Shear, W.A. 1975. The opilionid genera Sabaeon and Tomieomerus in America (Opiliones, Troguloidea,Ischyropsalidae). Journal of Arachnology, 3:5-29.Shear, W.A. 1986. A cladistic analysis of the Opilionid superfamily Ischyropsalidoidea, with descriptions of the newfamily Ceratolasmatidae, the new genus Aeue/avella, and four new species. American Museum Novitates, 2844: 1-29.Suzuki, S. 1974. The Japanese species of the genus Sabaeon (Arachnida, Opiliones, Ischyropsalidae). Journal ofScience of the Hiroshima University, Series B, Division 1 (Zoology), 25:83-108.Tsurusaki, N. & D. Song. 1993. Two new species of Sabacon from Sichuan Province, China (Arachnida: Opiliones:Sabaconidae). Zoological Science, 10(1):155-159.

Two new species of Sabacon harvestmen, with descriptions of the females of Sabacon astoriensis Shear and Sabacon sheari Cokendolpher, from Western North America. (Arachnida, Opiliones, Sabaconidae)

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Two new species of Sabacon harvestmen, with descriptions of the females of Sabacon astoriensis Shear and Sabacon sheari Cokendolpher, from Western North America. (Arachnida, Opiliones, Sabaconidae)

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