Laemophloeus

Species of Laemophloeus are distinguished from related genera by their congeneric status with the type species Laemophloeus monilis. Following Lefkovitch's revision, the genus was restricted from over 100 species to 28, with many former members now placed in other genera such as Charaphloeus. Species previously listed under Laemophloeus in broad sense should be designated as Laemophloeus (sens. lat.).

Under bark of dead trees; also associated with stored grain and cereal products. Some species complete much of their life history within grain kernels.

Palaearctic and Nearctic realms, extending into tropical regions of the New World. Specific species distributions include: Europe (L. kraussi, L. monilis, L. muticus, L. nigricollis), North America (L. apache, L. biguttatus, L. fasciatus, L. fervidus, L. shastanus, L. terminalis), Central and South America (multiple species), Mexico (L. buenavista, L. sexarticulatus, L. taurus), Galapagos (L. insulatestudinas), Japan and Siberia (L. submonilis, L. ribbei).

Primarily fungi, especially ascomycetes, when found under bark of dead trees. Some species feed on germ of wheat and other grains; maize germ also consumed.

• Cephalonomia waterstoni - parasitoidBethylid wasp parasitoid of Laemophloeus larvae; equally viable on L. minutus, L. ferrugineus, and L. turcicus but shows marked preference for L. ferrugineus

Egg, four larval instars, and pupa. Development duration highly temperature-dependent: at 75% relative humidity, egg to adult emergence takes 69–103 days at 70°F, 26–38 days at 80°F, 19–33 days at 90°F, and 17–26 days at 100°F. First instar larvae require breaks in grain bran layers to penetrate kernels; cannot enter undamaged whole grains. Pupation mainly intergranular in wheat; cocoons formed in flour, with some larvae pupating in loose webbing.

Oviposition in L. minutus stimulated by constant presence of males. Cannibalism observed in larval and adult stages when diet is unfavorable. Some larvae are free-living for part of their lives; proportion free-living decreases as total population increases.

Decomposer under bark of dead trees through fungivory. Some species are significant pests of stored grain, attacking germ of wheat and other cereals. Serves as host for parasitoid wasps.

Several species are pests of stored grain and cereal products, including wheat, rye, maize, and flour. Infestations can occur in bulk storage facilities. Manitoba wheat and whole-meal flour are particularly favorable substrates for development.

• CharaphloeusFormerly included species now transferred to this genus; four South American species (C. aeneus, C. deletus, C. gounellei, C. pilatei) moved from Laemophloeus (sens. lat.) based on examination of type material

• stored product pest
• fungivore
• bark beetle
• grain pest
• parasitoid host

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• THE BIOLOGY OF LAEMOPHLOEUS FERRUGINEUS (STEPH.)
• The Biology ofLaemophloeus minutusOliv. (Col. Cucujidae)
• Host Preference of Cephalonomia Waterstoni Gahan, a Bethylid Parasitoid of Laemophloeus Species
• Study of an infestation by Laemophloeus sp. (Coleoptera Cucujidae) in bulk wheat
• A NEW SPECIES OF LAEMOPHLOEUS (COL.: CUCUJIDAE) ASSOCIATED WITH STORED PRODUCTS
• Reclassification of four South American species of Laemophloeus Dejean, 1835 into Charaphloeus Casey, 1916 (Coleoptera, Laemophloeidae)
• The Biology of Cephalonomia waterstoni Gahan (Hym., Bethylidae), a Parasite of Laemophloeus (Col., Cucujidae)
• Observations on the Life History of Laemophloeus minutus (Ol.) (Col. Cucujidae) when bred on various Stored Cereals and Cereal Products