NO. 6 OPINIONS 105 I'O 114 23 



1802: Acanis siro Linn., 1758a, p. 616, no. 15, cited as example (not as type) by 



Latreille, 1802b, 64, with Tyroglyphus 1796 as syn. In 1796 this was mt. of 



Tyroglyphus [cf. farinac 1758] ; scabici eliminated to Sdn-optcs as mt. 



Some authors have construed this as tyi)e designation. 

 1810: Acarus siro Fabr. definitely designated type by Latreille, i8loa, 425. 



[The variety scabici had been eliminated to Sarcoplcs. leaving farinac as 



type of siro.] 

 1826: Acarus siro [not including scabici] Linn., definitely designated type by 



Heyden. 1826, Isis, 611. 

 1834: Acarus doiiicsticus de Geer, 1778, definite but erroneous designation by 



Duges, 1834. Not an original (1758) species, hence pseudotype, etc. Cf. 



Glyciplnujus. 

 1877: Acarus douicsticus cited as ist species (not as definite type designation) 



by Canestrini and Fanzago, 1877, 196, Atti r. Inst. Ven. Sci. Lett. Art., v. 4. 

 1926: tsd. Acarus siro (^scabici) definitely designated type by Oudcmans, in 



various articles and letters. 

 1927: type siro 1758 (&yn. scabici) ])\ Vitztlium, 1927, Zool. .Anz., v. 72, 115-126. 



Thus, tmder the Rtile.s, Acanis supplants Tyroglyphus, tmit-ss the 

 Rules be suspended l)y suppressing- Acarus entirely on utilitarian 

 grounds. 



Sarcoptcs Latr., 1802b, 67, mt. scabici. 



1802: Acarus scabici Limi., 1758a, 616, no. 15 var., only species cited fur 



Sar copies. 

 [1808: nidulaus classified by Nitzscli, 1808, V.. and (r. luicycl., v. i, p. 251, as a 



Sarcoptcs.] 

 i8to: etd. passcri)ius Linn., 1758a, ()i6, no. 10 (not an original, 1802, species), 



definitely designated type i)y Latr., i8ioa, 425. [Transferred to AnaUjcs 



by Nitzsch, 1818.] 

 1826; etd. )iidu!a)is Nitzsch (not an original, 1802, species) delinitely desig- 

 nated type by Heyden, 1826, 611. 

 1861 : emended to Sarcoptus Moq.-Tand., i86ia, 307. 

 1888: sul)g. luisarcoptcs Rail., 1888, tsd. (1927) scabici by Stiles and Hassall, 



1927, 263. 

 1892: emended to Sarcopta Anacker, 1892b, 61. 



: emended to Sarkoptcs by various Cierman authors. 



1903: siro assumed to be type by absolute tautonymy of Siro Latr., 1795, by 



Michael, 1903, 102, and syn. of scabici. See. however, Siro rubcns in Latr., 



1802b. 

 1915 : scabici accepted as type by Apstein, 1915a. 



1927: scabiei accepted as mt. of Sarcoptcs by Stiles and Hassall, 1927, p. 263. 

 1927: passcrinus accepted as type by Vitzthum, 1927, Zool. Anz., v. y2, 125. 



In view of the foregoing data the Secretary recommends tlial the 

 Commission adopt as its Opinion the following: 



Sarcoptcs Latreille dates frcjm 1802 instead of 1804 or 1806 as 

 frequently qtioted. It was originally monotypic, containing only 

 Acarus scabici. The 1810 type designation of Acarus passcriuus is 

 invalid under .Article 30c and ^oe^. The accejilance of .Icarus scabici 



