Deharvengiurus argus ( Denis, 1925 )

Beruete, Enrique, Arbea, Javier I., Baquero, Enrique & Jordana, Rafael, 2021, The family Onychiuridae (Collembola) from karst caves of the Basque biospeleologic district, with description of four new species, Zootaxa 5040 (2), pp. 151-194 : 155

Deharvengiurus argus ( Denis, 1925)

Onychiurus argus Denis, 1925 . Bull. Soc. Entomol. France, 1924(18): 197

Onychiurus cantabricus Steiner, 1958 . Eos , 34: 79

Deharvengiurus argus (Denis) : Weiner 1996. Annls. Soc. ent. Fr. (N.S.), 32: 183.

Studied material. Loc. 5. 1 ex., 2.X.1987. Loc. 7. 1 ex., 8.IV.1988. Loc. 9. 3 ex., 25.X.1985. Loc. 12. 6 ex., 29.XII.1985. Loc. 13. 2 ex., 3.X.1985. Loc. 14. 206 ex., 13.XI.1987. Loc. 16. 24 ex., 12.VI.1988. Loc. 17. 1 ex., 28.III.1989; 10 ex., 15.VI.1989. Loc. 20. 2 ex., 30.V.1988. Loc. 21. 2 ex., 12.XII.1987. Loc. 22. 2 ex., 1.X.1988. Loc. 26. 7 ex., 4.VIII.1987. Loc. 28. 11 ex., 19.X.1986. Loc. 30. 2 ex., 16.IV.1988. Loc. 34. 2 ex., 11.VIII.1987. Loc. 35. 2 ex., 20.X.1985. Loc. 36. 1 ex., 9.XI.1985. Loc. 39. 2 ex., 21.XI.1987.

Determination features: head without ventral pso; dorsal pso as 3,4/4,6,6/9−10,10−11,9−10,9+1,8.

Orophylous species, troglo-mountainous ( Deharveng & Gouze, 1984). It appears as an epigean at high altitudes (2400m); at low altitude, it is found as a troglophilous. It was described from the French Eastern Pyrenees. In the Iberian Peninsula it has been cited in a cave in Portugal ( Gama 1962 as O. gr. argus ), and in numerous localities in the Basque Country, mainly in caves ( Bonet 1931, Stach 1934, Jordana & Beruete 1983 as O. cantabricus, Arbea & Jordana 1991 , Jordana et al. 1997, Beruete 2000a, 2000b, Beruete et al. 2002 as O. argus , and Arbea 2018 as D. argus ), being the most frequent Onychiuridae species in the caves of the Basque bio-speleological district, where it has been found in a large number of different habitats: puddles, gours, decomposing plant remains, guano, sheep droppings, etc.