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Contributo alla conoscenza dei Lepismidae e Machilidae (Th ysanura) della Bulgaria
... Esta cita mis occidental, es la primera que se realiza en la Península Ibérica. (Wygodzinsky, 1939) -Gonapófisis IX con sedas especiales; 2 O tarsómero con un número de espinas igual a cua- Heterotarsus (Silvestri, 1942) . Janetschek, 1959 -Fémur y tibia ventral con finas sedas; 2' tar-AGRADECIMlENTOS sómero con menos de 6 (3-5) espinas ...... 4 4. Palpo maxilar con sedas rigidas, casi rectas, Debo dar las gracias al Prof. H. Janetschek de la en la cara ventral de 10s artejos 5 a 7 ......... Universidad de Innsbruck, por haberme mandado, trispina (Wygodzinsky, 1939) Se cita por primera vez el género Silvestrichilis en la Península Ibérica, describiendo una nueva espe-1. ...
The Mediterranean Basin is considered one of the most important hotspots of biodiversity in the European region. Many taxa exhibit high levels of speciation and endemicity in this area. This is the case of the myrmecophilous insects of the families Lepismatidae and Nicoletiidae (Insecta: Zygentoma) that are further assessed in this study using unpublished and bibliographic data. A complete checklist of all ant-associated silverfish occurring in the Mediterranean Basin is presented, together with an updated identification key and interesting new records for several countries. Considering all described Zygentoma species, the myrmecophilous silverfish of the Mediterranean area represent 28% of all ant-associated species of the world and about 35% of the studied area. Even with the scarce knowledge of Zygentoma in other biogeographic areas and with insufficient sampling in other continents, we conclude that the Mediterranean region, and neighbouring areas of the Western Palaearctic, represent the most important biodiversity hotspot of ant-associated Le-pismatidae (about 30% of the myrmecophilous species of this family described in the world so far), while the highest diversity of myrmecophilous Atelurinae is linked to tropical regions.
Review of the six genera of the Silvestrichilis group (Dilta Strand, Haslundiella Janetschek, Silvestrichilis Wygodzinsky, Silvestrichiloides Mendes, Haslundichilis Wygodzinsky, and Himalayachilis Wygodzinsky) and of the 17 species of the southern Palaearctic genus Silvestrichilis was performed for the first time with a discussion of their phylogenetic relationships and evolutionary trends based on comparative analysis of the geographic distribution of the species and of the distribution of plesiomorphic and apomorphic states of their main morphological features. Haslundichilis quadrii Wygodzinsky, 1952 from northwestern India and H. lindbergi Wygodzinsky, 1962 from western Afghanistan are transferred to the genus Haslundiella, and new combinations Haslundiella quadrii (Wygodzinsky, 1952), comb. n. and Haslundiella lindbergi (Wygodzinsky, 1962), comb. n. are established. A new species, Silvestrichilis polinaesp. n., differs from all the congeners in the strongly dilated fore femur of the male and female, in the maxillary palpus chaetotaxy, and in the structure of the sensory field on the fore femur of the male.
As a starting point for the revision of the genus Ctenolepisma Escherich 1905, the status of its type-species, Ctenolepisma lineata (Fabricius 1775), is clarified. In the present study, this species (originally described from Switzerland) is redescribed by means of many samples from several European countries and a neotype is designated. The constant presence of a third pair of abdominal styli in adult C. lineata s. str. leads to abandon the obsolete name C. lineata var. pilifera (Lucas 1840) for referring to a presumed non-typical variety of this species. The status of Lepisma pilifera Lucas 1840 is discussed, concluding that this name must be treated as a new synonym of Thermobia aegyptiaca (Lucas 1840). After our redefinition of the characters of C. lineata, an examination of many specimens of Ctenolepisma that were previously identified as C. lineata reveals that some of them are actually members of different taxa. This is the case for a species occurring in the Canary Islands, Northwest Africa, the Iberian Peninsula and the Balearic Islands. In this work this species is ascribed to Lepisma nicoletii Lucas 1846, which was described from Algeria and regarded as a synonym of Ctenolepisma lineata by Escherich; this species is now redescribed as Ctenolepisma nicoletii stat. res. This species differs from C. lineata in that it bears only two pairs of abdominal styli, and it also differs in the shape of the prosternum and femoral scales. Lepisma eatoni Ridley 1881, which was described from Morocco and the Canary Islands and subsequently regarded as synonym of C. lineata, is now synonymised with C. nicoletii.
Types of some of the Silvestri's species of Machilidae (Microcoryphia) described in 1906 and in 1907, deposited in the Museum National d'Histoire Naturelle, in Paris, are studied in detail; notes are added to the original descriptions or the species are redescribed. Machilis bouvieri, from Tonkin, only known by the female, is considered to fit in Pedetontus (Verhoeffilis); Machilis perrieri from Congo, previously considered as probably belonging to Janetschekilis, is confirmed in this Afrotropical genus; Praemachilis confucius is redescribed as the easternmost known species of Silvestrichilis; and Praemachilis longistylis, from China like the preceding taxon, is also redescribed as one more species of the eastern Palaearctic Allopsontus (Kaplinilis); the female remains unknown in this last species and, so, its subgeneric position is discussed on the base of the male only.
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