Title: MORPHOMETRIC CHARACTERIZATION OF THE MANGO TREES MEALY
COCHINEAL: RASTROCOCCUS INVADENS ON CITRUS TREE IN SENEGAL
Authors: Amadou FALL*, Mamour TOURE
, Fawrou SEYE
, Raymond Demba NDIONE
, Thierno Seydou
BADIANE5
and Mady NDIAYE ,Senegal
Abstract: Morphometric data is a useful complement of information that allows precise identification of
the different parts of Rastrococcus invadens in Senegal. This study was carried out in four farms
(Diatock and Oussouye) all located in natural Casamance and (Santhie and Khay) in the region
of Thies. The work took place in February 2016 where citrus production is important. In each
farm, we chose the lemon tree and the orange tree which are host plants of R. invadens.
From each plant we collected 10 specimens. This enabled us to get 40 specimens from
Casamance and 40 other specimens from Thies. Specimens were coded with regard to both the
area and the type of plant they were collected from. The average measurements of the different
parts of the insect showed a difference between the populations of the two agro-ecological zones
with homogeneity of the populations of Thies and a heterogeneity of the populations of
Casamance with a large zone of introgression. The results of this study should allow easier
recognition of the different parts of R. invadens
