Lyctocoridae

Classification

Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Cimicomorpha
Superfamily: Cimicoidea
Family: Lyctocoridae

Pronunciation

How to pronounce Lyctocoridae: /laɪk.toʊˈkɔr.ɪˌdi/

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Summary

Lyctocoridae is a family of bugs that includes a single genus with a total of 27 species known, primarily found in temperate regions. The family is recognized for its predatory nature and unique reproductive strategy.

Physical Characteristics

Lyctocoridae range in length from 2 mm to 6 mm. They have tarsi 3-segmented, forewing with a costal fracture and with weakly developed veins in the membrane, laterotergites on all abdominal terga, and male genitalia strongly asymmetrical (left paramere larger than the right). Males have a flat left paramere without a median sulcus, and a tubular phallus with a striated ductus seminis. Females possess genital apophyses in the anterior region of abdominal sternum 7.

Identification Tips

Distinguished from the related family Anthocoridae by the male's left paramere shape and structure, and the presence of genital apophyses in the females.

Habitat

Often found under tree bark, in decaying plant matter, animal nests and burrows, manure piles, poultry houses, granaries, and stored food products.

Distribution

Holarctic, primarily north temperate; 8 species in the local area and 20 species in the Palaearctic, totaling 27 species.

Diet

Predominantly predators of small, soft-bodied arthropods. Some species, like L. campestris, can feed on mammal blood, while L. ichikawai feeds on the sap of sawtooth oak (Quercus acutissima). Adults and nymphs have similar diets.

Reproduction

Practice traumatic insemination, where the male pierces the female's abdomen between terga 7 and 8. The sperm migrates through the haemocoel or specialized structures to the ovaries for fertilization.

Ecosystem Role

Some species serve as biological control agents by preying on pest insects, including beetle and moth pests in stored food products and bark beetle pests.

Evolution

Recent phylogenetic work validates their classification as a separate family from Anthocoridae, with ongoing molecular studies refining their groupings within the broader context of Hemiptera.

Similar Taxa

Anthocoridae