Paratachardina pseudolobata (Coccoidea: Kerriidae): Bionomics in Florida

ABSTRACT The lobate lac scale, Paratachardina pseudolobata Kondo & Gullan, attacks large numbers of plants in Florida. The scales primarily infest the branches and main stems <2 cm in diameter; rarely were they found on stems that were larger than 4 cm in diameter or on leaves and never on roots. They produce honeydew, but ants did not tend the scales nor did ants appear attracted to the honeydew, which is ejected from the scale instead of being present in collectable droplets. Males have not been found in Florida populations of the lobate lac scale and females are parthenogenetic and ovoviviparous. The scales developed into adult females in 15–19 weeks. Crawlers of second generation were present 21 weeks after young crawlers of the previous generation were placed on a host plant. The pre-imaginal stadia were: first instar 8–11 weeks; second instar 7–8 weeks. The numbers of crawlers counted per month on host plants were notably uniform throughout the year, but there was evidence of a slight increase in cr...