Ischnodemus quadratus Fieber, 1837: 338. ST(S): Italy, Sicily; lost?
Pachymerus parallelus A. Costa, 1842b: 290 (syn. Scudder, 1957b: 15; confirmed by Péricart in Carapezza et al., 1995: 284). LT (Péricart in Carapezza et al., 1995: 284): female (macr.), Italy, Sicily, Palermo; ZIUN.
?Rhyparochromus decurtatus (non Herrich-Schaeffer, 1837a): Lucas, 1849: 78. STS: Algeria, lac Tonga, nr La Calle [= El Kala]; lost?
Micropus sabuleti (non Fallén, 1826): Signoret, 1857: 29. Misidentification (see J. A. Slater, 1964a: 484).
Ischnodemus atlanticus Lindberg, 1932a: 30 (syn. Tischler, 1960: 172, suspected). LT (Péricart, 1997a: 65): brach. male, Morocco, High Atlas, Reraïa valley; MZHF.