Danièle Matile-Ferrero

Comportements de communication de la cochenille néotropicale Neochavesia caldasiae (Balachowsky 1957) (Pseudococcidae : Rhizoecinae) avec sa fourmi symbiote Acropyga fuhrmanni (Forel 1914) (Formicidae : Formicinae)

Abstract Nous présentons différents éléments du comportement de communication du Pseudococcidae Rhizoecinae Neochavesia caldasiae avec sa fourmi-hôte Acropyga fuhrmanni, insectes qui vivent en symbiose dans la rhizosphère des cacaoyers de Bahia, Brésil. La cochenille utilise ses antennes comme organes de communication afin de recruter la fourmi pour être transportée à l’abri ou dans une autre galerie du nid. Nous décrivons aussi la «gifle d’apaisement» donnée par la cochenille à la fourmi au moyen de son extrémité abdominale quand elle est bousculée par cette dernière, afin de la maintenir à l’écart de sa position assurée sur la racine.

A new genus and species of felt scale (Hemiptera: Coccomorpha: Eriococcidae) from New Caledonia on an endemic species of Casuarinaceae

A new genus of Eriococcidae, Dzumacoccus Hodgson gen. n., is erected for a new species, Dzumacoccus baylaci Hodgson, Germain Matile-Ferrero, feeding on Gymnostoma poissonianum, a species of Casuarinaceae endemic to New Caledonia. The adult female and first-instar nymph are described and illustrated.

The unusual cover of the armoured scale Cryptaspidiotus barbusano (Lindinger) (Hemiptera: Diaspididae: Aspidiotinae) with comments on the scale covers of other Diaspididae

Abstract Cryptaspidiotus barbusano (Lindinger 1908) is an endemic species of the Canary Islands, only known on Apollonias barbujana (Lauraceae), a plant growing in the “Laurisilva” or laurel forest, in several Macaronesian islands. Recently C. barbusano was collected on Heberdenia excelsa (Myrsinaceae), a new host plant and family, in the Jardín Botánico Canario Viera y Clavijo, Las Palmas, Gran Canaria. The recent collection of C. barbusano gives us the opportunity to redescribe its unusual adult female scale cover. The truncate cone-shaped scale cover and its peculiar reflexed exit tunnel for crawlers, with microscopic details of this rare species, are described and illustrated. The shape of the exit tunnel is discussed and the scale cover is compared with scale covers of several other diaspidid species. Finally, this study shows that C. barbusano is not a pupillarial species as formerly described.

On the distribution ofPhenacoccus yerushalmi Ben-Dov (hemiptera: coccoidea: Pseudococcidae) in the mediterranean basin

Of the approximately 40 mealybug species recorded throughout the world from various trees of the Pinaceae, ten are known to develop on various species of this family in the Mediterranean basin (2). Phenacoccus yerushalmi BenDov, one of the Mediterranean species, was first described from Jerusalem, Israel, taken from the Aleppo pine, Pmus halepensis (1). Later it was recorded from Sicily (3). Since then, we have identified this mealybug from additional collections listed below.