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Gibraltar Ornithology, Nature, and Wildlife The Rock's natural history

Issue No.1

Index & Abstract:

3-10.......Charles Perez. Mountain chiffchaff Phylloscopus sindianus sindianus Brooks, 1880, in Gibraltar.

This paper confirms the capture of a mountain chiffchaff Phylloscopus sindianus sindianus Brooks, 1880, on the Rock of Gibraltar. The bird was netted on the morning of the 27th November at Jews' Gate ringing station, following strong easterly winds. The paper provides details about the process of identifying this bird as a mountain chiffchaff belonging to the sindianus subspecies. The bird is compared with published descriptions of the two subspecies. Finally it is argued that although the subspecies lorenzi (Lorenz, 1887) is found in the Caucasus and sindianus is from the Himalayas, the latter is more likely to occur as a vagrant given its greater migratory habits.

11-20... Alex Menez. Gibraltar land molluscs: systematic list and comparisons of species abundances with other localities in southern Iberia.

Gibraltar has a total area of approximately 6km² and 42 land molluscs have been recorded within these.  Cluster and multidimensional scaling analyses of species abundances from localities within 1km of the coast along 1500km of southern Iberia show that Gibraltar clusters with nearby localities indicating that its land mollusc fauna is similar to that of surrounding areas.  However, there are elements of this fauna that highlight its importance in the context of the surrounding area.  These are the endemics C. connollyi and A. norrisi, and the range-restricted O. calpeana.  Twenty-six species are included in the Nature Protection Ordinance, 1991 (L/N 11 of 1991), which is a high proportion of the total in relation to other European countries and territories.  This, together with the status of the Upper Rock (in which many species are found), as a Nature reserve, ensures that the Gibraltar land mollusc fauna, through thoughtful planning and legislation, is well protected.

21-34.... Jason Kurt Easter. The woodlice of Gibraltar: checklist, distribution and brief descriptions of the terrestrial isopod species of Gibraltar.

The distribution of terrestrial isopods in Gibraltar is briefly described using selected habitats.  The habitats are typical of the Mediterranean region; including gardens, scree and steppe.  Thirteen species of isopods were found and nine of these have been positively identified.  Most species were common in all habitats although two species were restricted to the coastline.  A checklist of the identified species is at Appendix 1.

34-47..... Keith J. Bensusan & Charles E. Perez.  The family Cerambycidae (Insecta: Coleoptera) in Gibraltar.

In December 2002, we began collecting beetles on behalf of the Gibraltar Ornithological and Natural History Society (GONHS), with a view to cataloguing the Coleoptera of Gibraltar.  In this paper, we present our findings on the family Cerambycidae (Coleoptera: Chrysomeloidea) so far.  Fifteen species have so far been recorded, and these are listed taxonomically.  Included are details on phenology and plant associations, as well as photographs illustrating each species.

48-53..... Keith J. Bensusan, Charles E. Perez & J. Paul Acolina.  Observations on the dragonflies and damselflies (Insecta: Odonata) of Gibraltar.

There is very little available information on the Odonata of Gibraltar.  We have observed that despite the lack of fresh water habitats on the Rock, members of the Odonata, especially of the Superfamily Anisoptera Sélys, 1854, can appear in large numbers.  Of the 8 species identified during 2003, only Ishnura graellsi (Rambur, 1842), and possibly Anax imperator Leach, 1815, appear to have bred in artificial ponds in the Gibraltar Botanic Gardens.  The other species, most of which are known to be migratory, probably pass through Gibraltar on migration.  They appear at the end of their usual European flight periods, the species composition varies from that in the south of Andalusia and the presence in Gibraltar generally coincides with that of migratory birds.

54-55..... Keith J. Bensusan & Charles E. Perez.  Confirmation of the presence of the scorpion Buthus occitanus Amoureux, 1789, (Arachnida, Scorpiones) in Gibraltar.