Stenocoris
Burmeister, 1839
rice bugs
Species Guides
2- Stenocoris furcifera(broad-headed bug)
- Stenocoris tipuloides(neotropical rice bug)
Stenocoris is a of true bugs in the Alydidae, commonly known as rice . The genus contains more than 20 described distributed across Africa and the Americas. Several species are significant agricultural pests of rice, feeding on developing grains and causing yield loss and quality reduction. The genus is characterized by slender body form typical of the Alydidae family.
Pronunciation
How to pronounce Stenocoris: //ˌstɛn.oʊˈkɔː.rɪs//
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Identification
Members of Stenocoris can be distinguished from other Alydidae by their slender, elongated body form and association with rice and other grass . The genus belongs to the tribe Leptocorisini within Micrelytrinae. -level identification requires examination of genitalia and other fine morphological characters not reliably visible in field observations.
Images
Habitat
Associated with rice , particularly upland rice fields. have been documented in agricultural settings in West Africa, including experimental rice plots. specificity varies by species; some are restricted to cultivated rice while others may occur in wild grasslands.
Distribution
Africa and the Americas. Documented in West Africa (Nigeria), with GBIF records indicating presence in southern North America (Florida, Texas) and South America.
Diet
Rice seeds at milky stage; at least one (S. elegans) feeds on developing grains of Oryza sativa. Feeding occurs via typical of Hemiptera.
Host Associations
- Oryza sativa - primary upland rice variety IDSA 10 confirmed for S. elegans
Life Cycle
stage with approximately 8 days. Five nymphal instars with total developmental period averaging 18 days from first instar to under laboratory conditions. Nymphal instar durations increase progressively, with final instar lasting 5–6 days. with mated females producing approximately 135 eggs over an oviposition period of 33 days.
Behavior
Grain-sucking feeding targeting rice panicles. and nymphs feed on developing seeds. High reproductive potential enables rapid buildup. Long oviposition period and adult longevity allow overlapping within a growing season.
Ecological Role
Agricultural pest causing direct damage to rice yields and grain quality. Part of the grain-sucking complex affecting rice at panicle stage in West African production systems. can result in significant economic losses.
Human Relevance
Negative impact as pest of rice in West Africa. Requires management within strategies for upland rice production. Research focus on S. elegans has provided baseline data for developing control measures.
Similar Taxa
- Other Alydidae generaStenocoris is distinguished by slender body form and confirmed rice-feeding specialization; other Alydidae may have broader ranges or different body proportions
- LeptocorisaBoth are rice-feeding Alydidae in tribe Leptocorisini; Stenocoris has more slender body and different distribution (Africa and Americas vs. Asia for Leptocorisa)
More Details
Research limitations
Most detailed biological data derive from single laboratory study on Stenocoris elegans; field and variation across other remain poorly documented. Study conducted on single rice variety; range breadth unknown.