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Introduction to the Mymaridae (hymenoptera) of Bangladesh

John T. Huber
Natural Resources Canada c/o AAFC, 960 Carling Ave., Ottawa, ON, K1A 0C6, Canada,

Nurul Islam
Forest Entomology Laboratory, Faculty of Forestry, University of Toronto, Toronto,ON, M5S 3B3, CANADA

Abstract/ Executive Summary:

An identification key to the 15 genera of Mymaridae found so far in Bangladesh is given, based on about 520 specimens collected using yellow pan traps placed in agricultural habitats and at the edge of ponds, mainly at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur. Species already reported from Bangladesh are listed and three more are added: Acmopolynema orientale (Narayanan, Subba Rao & Kaur), Himopolynema hishimonus Taguchi, and Mymar pulchellum Curtis.

Keywords: Mymaridae, Bangladesh, Identification key, List of genera

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

Start Date: 00-06-2007

End Date: 00-08-2007

Program Area: Pest Management

Commodity: Insects

Objectives:

However, voucher specimens of at least one of the species (P. bagicha) mentioned in the literature above may be in the Department of Zoology, University of Chittagong, Chittagong and the specimens (probably in Oudeman’s fluid) collected by Kamal et al. (1993) are likely in the Bangladesh Rice Research Institute, Gazipur.

Methodology:

Yellow pan traps three-quarters filled with water and a few drops of liquid detergent to break the surface tension were placed in small plot experimental fields and at the edge of ponds during June and August, 2007 at Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur and, for the pond traps, at Kalni Village, Gazipur. A few specimens were also collected in December, 2008, and January, 2009. The plots were planted with lady’s finger [okra]—Abelmoschus esculentus (L.) Moench (Malvaceae), brinjal [eggplant]—Solanum melongena L. (Solanaceae), white gourd—Benincasa hispida Cogn. (Cucurbitaceae), amaranthus—Amaranthus tricolor L. (Amaranthaceae), long bean—Vigna unguiculata (L.) Walp subsp. sesquipedalis (Fabaceae), and hyacinth bean—Lablab purpureus L. subsp. bengalensis (Fabaceae). Trap catches were washed and preserved in 70% ethanol. All Mymaridae were later extracted from the ethanol, critical-point dried, and mounted on cards. Representative specimens of all but two of the genera were slide mounted in Canada balsam, using the method described in Huber (2015). Photographs of the head, antenna, and wings were taken with a ProgRes C14^plus digital camera attached to a Nikon Eclipse E800 compound microscope, and a selection of the resulting layers combined electronically and edited in Zerene Stacker^TM. Specimens are deposited in the Canadian National Collection of Insects, Arachnids and Nematodes, Ottawa, Ontario, Canada, and the University of Rajshahi, Motihar, Rajshahi, Bangladesh. Abbreviations used in the key are: fl_x for funicle segment, and mps for multiporous plate sensilla.

Source of Information: Zookeys. 2017; (675): 75–96

Article Link (Online Journal): doi: 10.3897/zookeys.675.12713

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The greatest number of genera collected was at pond edges. This is perhaps not surprising because it is a much more natural habitat, presumably with many more plant species and potential insect hosts (both terrestrial and aquatic) than experimental field plots planted with a single crop.

Knowledge Management: Journal