Abstract
In this work we present a revision of the genus Ommatoiulus Latzel, 1884 in Portugal. Based on recently collected material and older museum samples, including type specimens, we describe six new species to science, viz. Ommatoiulus alacygni sp. nov., O. camurus sp. nov., O. denticulatus sp. nov., O. litoralis sp. nov., O. staglae sp. nov. and O. stellaris sp. nov. The species O. alacygni sp. nov., O. denticulatus sp. nov. and O. staglae sp. nov. described from the Algarve are outstanding by their extremely reduced mesomerital process. The species O. porathi (Verhoeff, 1893) and O. andalusius (Attems, 1927) are recorded and redescribed for the first time after their original description. The finding of O. andalusius – originally described from Andalusia in Spain – constitutes a new record for Portugal together with two species, viz. O. fuentei (Brolemann, 1920) and O. martensi Mauriès, 1969. The taxonomic status of several species is revised. Thus Archiulus (Schistocoxitus) cingulatus Attems, 1927 is here considered as a junior synonym of Ommatoiulus lusitanus (Verhoeff, 1895) while Schizophyllum cervinum Verhoeff, 1910 is synonymized with Ommatoiulus moreleti (Lucas, 1860). An identification key to all hitherto known Portuguese species of Ommatoiulus is presented as well as a distribution map illustrating the various species occurrences in the country.
Highlights
With 76 described species from Europe and North Africa, the genus Ommatoiulus Latzel, 1884 is the most diverse of the tribe Schizophyllini, which includes the monotypic genus Tachypodoiulus Verhoeff, 1893, and the ‘genus’ Rossiulus Attems, 1926 – the latter has never been formally elevated to a full genus though treated as such in recent literature
Fifteen Ommatoiulus species are here recorded for Portugal among which six are new to science
In all species we described, the males share the secondary sexual characters consisting in the presence of mandibular stipes vertically expanded into rounded lobes; hook-shaped first pair of legs (Fig. 25) and the presence of postfemoral and tibial pads on subsequent legs
Summary
With 76 described species from Europe and North Africa, the genus Ommatoiulus Latzel, 1884 is the most diverse of the tribe Schizophyllini, which includes the monotypic genus Tachypodoiulus Verhoeff, 1893, and the ‘genus’ Rossiulus Attems, 1926 – the latter has never been formally elevated to a full genus though treated as such in recent literature (see Akkari & Enghoff 2012). The species of Ommatoiulus in the Spanish region Andalusia have recently been a subject of a revision by Akkari & Enghoff (2012) who recorded 19 species, ten of which new to science. The high proportion of new species – ca half of the total species known – in southern Spain is in line with the high species diversity in the Iberian Peninsula, one of the main Mediterranean biodiversity hotspots, in combination with the fact that the genus has not been subject to recent revisions in this area. We revise the genus Ommatoiulus in the southwest Iberian sector, Portugal; describe six new species to science and record further three species as new to Portugal. We present an identification key based on gonopod structures to all hitherto known Ommatoiulus species of the area
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