New species of Eretmocerus Haldeman (Hymenoptera: Aphelinidae) parasitizing Crenidorsum turpiniae (Takahashi) and Aleurothrixus floccosus (Maskell) (Hemiptera: Aleyrodidae) from Taiwan

Abstract

A key to females of 11 Eretmocerus species occurring in Taiwan is provided. Two new species, E. tongxiaoensis Shih & Polaszek, sp. nov. and E. lannae Shih & Polaszek, sp. nov. found infesting Crenidorsum turpiniae (Takahashi) and Aleurothrixus floccosus (Maskell) respectively, are described. Five more Eretmocerus species are recorded here as new to Taiwan: E. bisetae Hayat, E. flavus Krishnan & David, E. queenslandensis Naumann & Schmidt, E. rui Zolnerowich & Rose and E. trialeurodis Hayat. New host records for four of these Eretmocerus species from five whitefly species are presented. The whitefly Aleurothrixus floccosus (Maskell) is recorded for the first time from Taiwan.

Keywords:

• Duranta repens
• Psidium guajava
• guava
• taxonomy
• whitefly pests
• woolly whitefly

Acknowledgements

This study was partly funded by the Taiwan Ministry of Science and Technology (Project No. 102-2628-B-002-019-MY3). We are grateful to John Noyes (Natural History Museum, London) for providing references. Gary Gibson (Agriculture Canada, Ottawa) kindly clarified the terminology of the frenal arms. M. Hayat (Aligarh Muslim University, India), Huang Jian (Fujian Agriculture & Forestry University, China) and Stefan Schmidt (Zoologisches Staatssammlung, Munich, Germany) made great improvements to an earlier version of this paper.