Lethocerinae
Lauck & Menke, 1961
giant water bugs
Genus Guides
2- Benacus
- Lethocerus(giant water bugs)
Lethocerinae is a of giant water bugs within Belostomatidae, comprising large aquatic predatory insects distributed across the Palearctic, Oriental, and Australian regions. The subfamily includes two : Lethocerus and Kirkaldyia. Members are characterized by their large size—among the largest in Hemiptera—and are distinguished from other belostomatid subfamilies by morphological and genetic differences. within this group conservation concerns in parts of their range due to harvesting for human consumption.
Pronunciation
How to pronounce Lethocerinae: //ˌlɛθoʊsəˈraɪniː//
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Identification
Lethocerinae can be distinguished from other Belostomatidae by genetic divergence; the between Kirkaldyia and Lethocerus (16.4–16.8%) is comparable to intergeneric distances in other hemipteran . Within the subfamily, Lethocerus possess two light stripes on the pronotum: L. patruelis has narrower stripes than L. indicus, while L. insulanus has an additional longitudinal narrow dark band. Kirkaldyia deyrolli lacks such pronotal markings entirely.
Images
Habitat
Freshwater aquatic .
Distribution
Palearctic, Oriental, and Australian regions. Lethocerus patruelis extends eastward to Surat Thani Province in southern Thailand.
Behavior
fly to lights in large numbers.
Human Relevance
Lethocerus are heavily harvested and commonly sold in local markets as food in Southeast Asia. Kirkaldyia deyrolli is considered threatened in South Korea and Japan.
Similar Taxa
- BelostomatinaeOther of Belostomatidae; Lethocerinae distinguished by genetic divergence and geographic distribution (Lethocerinae primarily Palearctic, Oriental, Australian vs. Belostomatinae more diverse in Neotropics and Nearctic).
- Hydrocyrius sometimes treated as distinct from Lethocerus; morphological and genetic studies have clarified relationships within Lethocerinae.
More Details
Conservation status
Future conservation efforts should be directed toward Lethocerus in tropical Southeast Asia, especially the rarely found L. patruelis.
Genetic variation
Kirkaldyia deyrolli shows high intraspecific (3.7%) across its Northeast Asian range, compared to 0.3% in L. patruelis and 0.8% in L. indicus.