Paquin et al. 



JESO Volume 139, 2008 



Distribution. Eastern North America (see Dondale et al. 2003, map 72), reaching its 

 northern limit in southern Canada: Nova Scotia, Quebec and Ontario. 



Mastophora hutchinsoni Gertsch, 1955 



(Figs. 9-13) 



Material Examined. Canada: Quebec: Mont-Saint-Hilaire [45.54°N, 73.19°W] 1 juvenile, 

 25.viii.2006, beating, American beech canopy, M. Larrivee (CNC). 



Diagnosis. Both males and females of Mastophora hutchinsoni are easily distinguished 

 from all other Araneidae found in Canada by the forked tubercles on the carapace (Figs. 9, 

 10) and the shape of their abdomen (Figs. 9, 10). 



Distribution. U.S.A.: from Minnesota to New Hampshire, south to South Carolina (see 

 Dondale et al. 2003: map 29) and Canada: Quebec. 



Remarks. The highly distinctive feature of the tubercles on the carapace leaves no doubt 

 about the specimen identification, despite its juvenile stage. The species was included in 

 Dondale et al. (2003 ) because its presence was suspected in C anada, particularly in Southern 

 Ontario. This record represents an important range extension. 



Family Linyphiidae 

 Disembolus sacerdotalis (Crosby and Bishop, 1933) 



(Figs. 14-18) 



Material Examined. HOLOTYPK: Cochlembolus sacerdotalis Crosby and Bishop, 1933, 

 male (AMNH). Label 1: 'Karners, N.Y. Mar.24, 1923'. Label 2: 'Disembolus sacerdotalis 

 (Crosby and Bishop), Millidge 1979'. 



New Material. Canada: Quebec: Reserve Nationale de faune du cap Tourmente [47.08°N, 

 70.78°W] IcJ 27.xi.2004, sifting, maple forest, C. Simard (CPAD). 



Diagnosis. Disembolus sacerdotalis most resembles Disembolus anguineus Millidge, 1 98 1 , 

 and Disembolus convo/utus Millidge, 1981 in the shapes of the carapace, cephalic lobe, pits 

 and sulci (Fig. 14). Disembolus sacerdotalis can be distinguished by the large loose loop of 

 the embolus (E) (Figs. 15, 17), larger suprategular apophysis membranous part (M) (Fig. 

 1 5 ). the longer and narrower end of tailpiece (TP) (Fig. 1 5) and the form of the palpal tibial 

 apophysis (PTA) (Fig. 18). 



Distribution. Northeastern North America: New York (Buckle et al. 2001 ), Massachusetts 

 and Quebec. 



Remarks. This first Canadian record is only the third known specimen, including the 

 holotype examined to confirm our identification. The other known specimen is curated at 

 the Museum of Comparative Zoology (MCZ #6078 1 , Buzzards Bay, Massachusetts, iv. 1 966, 



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