<i>Gerris spinolae</i> Lethierry and Severin (Hemiptera: Gerridae) and <i>Brachydeutera longipes</i> Hendel (Diptera: Ephydridae): Two Effective Insect Bioindicators to Monitor Pollution in Some Tropical Freshwater Ponds under Anthropogenic Stress

<table>Relation between BOD and abundance of (a) <i>Brachydeutera longipes </i>(Hendel) and (b) <i>Gerris spinolae</i> (Lethierry and Severin) as shown by regression analysis.</table>

Psyche: A Journal of Entomology

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Figure 3

Figure 3: <i>Gerris spinolae</i> Lethierry and Severin (Hemiptera: Gerridae) and <i>Brachydeutera longipes</i> Hendel (Diptera: Ephydridae): Two Effective Insect Bioindicators to Monitor Pollution in Some Tropical Freshwater Ponds under Anthropogenic Stress 

Figure 3 | Gerris spinolae Lethierry and Severin (Hemiptera: Gerridae) and Brachydeutera longipes Hendel (Diptera: Ephydridae): Two Effective Insect Bioindicators to Monitor Pollution in Some Tropical Freshwater Ponds under Anthropogenic Stress 