REMARKS ON THE TRIBES MONOPHLEBULINI AND LLAVEIINI WITH DESCRIPTIONS OF 2 NEW GENERA (HEMIPTERA, COCCOIDEA, MARGARODIDAE)

Two new genera, Gullania and Hodgsonius, are described to take two new species, G. solomonensis from the bark of an unknown species of tree in the Solomon Islands and H, cassicola from the branches of Cassia si amea in Venezuela. Their descriptions are presented within the framewo rk of a world revision of the Margarodidae sensu MORRISON, 1928. Gulla nia is considered to belong to the Monophlebulini and has crenulated p ores, perforated cicatrices and large invaginated intersegmental lines . Hodgosonius appears to belong to the Llaveiini and has large conical spines on the perianal lobes and multilocular tubular pores with a ve ry broad and deeply invaginated central opening. The characteristics o f the tribes and the diagnostic value of the morphological characters used in the descriptions are discussed and a key to the placement of t he two new genera is proposed.