Parasitization of Idioscopus niveosparsus (Leth) and Bakera nigrobilineata Melichar by Halictophagus sp. (Strepsiptera: Halictophagidae).
Khin Nyunt Yee, Ocampo V. R.
Author Email: yee.khinnyunt@gmail.com
Philippine Entomologist 24 : 165-186
Abstract : Mango trees in the UPLB lower campus were surveyed from August 2008 to August 2009 for mango leafhoppers stylopized by Halictophagus sp. In addition to parasitized I. clypealis, which was reported earlier, sweep net catches also included parasitized I. niveosparsus and Bakera nigrobilineata. Based on extrusions, the mean weekly parasitization reached 16.6% for I. clypealis, 16.6% for I. niveosparsus and 2.85% for B. nigrobilineata. Parasitization ratio was 1?:1.35? for I. clypealis and 1?:0.85? for I. niveosparsus. Halictophagus sp. parasitoid ratio was 1?:1.09? on I. clypealis. The parasitization of I. clypealis was not influenced by its density but positively influenced by ambient temperature. On the other hand, both the density of I. niveosparsus and B. nigrobilineata and environmental factors did not influence their parasitization by Halictophagus sp. Halictophagus sp. parasitizes not only I. clypealis but also I. niveosparsus and B. nigrobilineata.