Contribució al coneixement de la taxonomia i la fenologia de les formigues (Hymenoptera: Formicidae) d'Andorra

A Malaise trap set in Santa Coloma, at 1,050 m
altitude, collected 1,413 ant specimens from
August 1992 to December 1993. There were 895
males (17 species), 137 queens (18 species) and
391 workers (12 species). Specific identification
was possible for 582 males, 98 queens and all
workers. Thirty species were detected in the
samples, a rather high number for a Pyrenean
locality. Eighteen species are new records for Andorra.
From that group, several species (Dolichoderus
quadripunctatus, Formica fusca, Lasius
brunneus, Lasius distinguendus, Myrmecina graminicola and Stenamma striatulum). have a distinct
northern biogeographic significance. Other species
are markedly mediterranean (Aphaenogaster
subterranea, Camponotus aethiops, Camponotus
cruentatus, Camponotus truncatus, Crematogaster
scutellaris, Messor structor, Pheidole
pallidula, Pyramica tenuipilis, Plagiolepis pygmaea,
Plagiolepis xene, Temnothorax rabaudi).
Three further species, captured at another locality
in southern Andorra, are new additions to the
myrmecofauna of Andorra: Formica gerardi,
Myrmica spinosior and Temnothorax kraussei.
Thus to date, there are fifty-eight ant species
recorded in Andorra.