This paper deals with some new material of Iranian harvestmen
accumulated during and after 2017. These recent collections yielded 11
species from six families, including five species that had previously
been known from Iran, and two families and six species which are
established as being new for the fauna of the country. The latter
include two newly described species of Phalangiidae, namely Homolophus airyamani spec. nov. (male; Hormozgan Province, southern Iran) and Phalangium martensi spec. nov.
(male; Khuzestan Province, southwestern Iran). With the study of new
specimens and the recording of previously known material, 28 species
from six families of Opiliones are currently known from Iranian
territories. The records include one species of Biantidae, one species
of Dicranolasmatidae, five species of Nemastomatidae, 19 species of
Phalangiidae, and a single species each for Sclerosomatidae and
Trogulidae.