Fig. 1. Geographical distribution of three species of ischnoceran chewing lice parasitizing wild and domestic chicken (Gallus spp). Each circle is divided into three sectors, representing the three louse species: upper left = Goniodes gigas (Taschenberg, 1879); upper right = Goniodes dissimilis Denny, 1842; lower = Goniocotes gallinae (De Geer, 1778). Black sectors indicate that this louse species is known from this country, whereas hollow sectors indicate that we have found no published records of this species in this country. Presence of the three species of chewing lice in a country is based on the reports summarized in Table 1.