Laelius

Ashmead, 1893

Laelius is a of small in the , Epyrinae. are of , primarily attacking (), with some species also associated with Scolytinae and . The genus contains approximately 68 valid species worldwide, with significant diversity in the Palaearctic region. Several species have been investigated for of stored product pests and forest pests.

Laelius pedatus by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.Laelius pedatus by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.Laelius pedatus by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.

Pronunciation

How to pronounce Laelius: //ˈlæ.li.us//

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Identification

Distinguished from other by the combination of thick black on body and , projected clypeal lobe, and complete occipital . The presence of carinae on the metapostnotum and metapectal-propodeal disc, along with patterns (particularly 2r-rs&Rs length), provides diagnostic characters. Male is critical for -level identification.

Images

Appearance

Small with thick black covering the body and . morphological features include a projected clypeal lobe, complete occipital , and diagnostic carinae on the metapostnotum and metapectal-propodeal disc. with 2r-rs&Rs of characteristic length. Male used for -level identification.

Habitat

Forests and stored product environments. Specimens collected via sweeping , , or rearing from . Elevation range includes at least 1706 m (Yunnan, China).

Distribution

distributed across most zoogeographic regions worldwide except the Oceanian region. Approximately 33% of described from the Palaearctic region. Documented from China (Yunnan, Jiangsu, Hunan, Northeast China), South Korea (Seoul, Jeju-do), and Scandinavia (Denmark, Norway, Sweden).

Diet

of ; primarily attacks larvae of ().

Host Associations

Life Cycle

development on ; reared from host larvae in laboratory conditions. Parasitizes larvae of host .

Behavior

Potential agent for agroforestry and stored product pests. Some (Thaumaglossa) are and of , making relevant for protecting breeding structures and traditional Chinese medicine ingredients.

Ecological Role

agent of pest including destructive stored product pests and ; regulating of .

Human Relevance

Investigated for of stored product pests (e.g., ) and forest pests. Potential application in protecting breeding structures used in traditional Chinese medicine.

Similar Taxa

  • Other Bethylidae generaLaelius distinguished by thick black , projected clypeal lobe, complete occipital , and specific carinae patterns on metapostnotum and metapectal-propodeal disc

More Details

Taxonomic diversity

contains approximately 68 valid worldwide. Six species recognized from China including one new species (L. longus) and three new country records. Four new species described from South Korea (L. afores, L. atratus, L. sulcatus, L. tricuspis).

Collection methods

Specimens primarily collected using , sweeping , or rearing from . Male of L. longus unknown.

Tags

Sources and further reading