Silvanid
Guides
Ahasverus longulus
Ahasverus longulus is a species of silvanid flat bark beetle in the family Silvanidae, first described by Blatchley in 1910. It is known from North America, with documented records from Canada including New Brunswick, Ontario, and Québec. As a member of Silvanidae, it is associated with bark and wood habitats, though specific ecological details remain limited.
Cryptamorpha desjardinsii
Desjardin's beetle, Desjardin's flat beetle
Cryptamorpha desjardinsii is a small silvanid flat bark beetle, originally described from tropical Asia in 1844. It has established cosmopolitan distribution through human-mediated introduction, now occurring across Europe, North America, the Caribbean, and Oceania. The species feeds on mildews and moulds, particularly on plants such as flax. Its spread to New Zealand is documented as occurring via Australia.
Monanus
Monanus is a genus of small beetles in the family Silvanidae, first described by Sharp in 1879. The genus contains at least 21 described species distributed primarily in tropical and subtropical regions. Species in this genus have been documented across multiple continents including Australia, Asia, and Africa. Members of Silvanidae are commonly known as silvanid flat bark beetles or cucujoid beetles, though specific ecological details for Monanus remain limited in published literature.
Nausibius
Nausibius is a genus of silvanid flat bark beetles in the family Silvanidae. The genus is cosmopolitan with extant representatives worldwide. A fossil species, Nausibius radchenkoi, has been described from Eocene Rovno amber, confirming the genus originated at least 34 million years ago and was present in European forest ecosystems. Extant species are frequently associated with stored food products, particularly sugar.
Psammoecus trimaculatus
Psammoecus trimaculatus is a small silvan flat bark beetle native to the Afro-Oriental region that has been introduced to many parts of the world. Adults measure 2.23–2.96 mm in length and are characterized by a longitudinal sutural spot on the elytra. The species is frequently attracted to light and has been recorded from diverse geographic regions including Asia, Africa, and the Americas.
Silvanoprus angusticollis
Silvanoprus angusticollis is a silvanid flat bark beetle (family Silvanidae) first described by Reitter in 1876. The species occurs in North America, including the Canadian province of Québec. Like other members of Silvanidae, it inhabits environments associated with dead or decaying wood and stored plant products. The genus Silvanoprus is distinguished from related genera by specific morphological features of the antennae and pronotum.
Silvanus muticus
Silvanus muticus is a species of silvanid flat bark beetle in the family Silvanidae, first described by Sharp in 1899. It belongs to a group of beetles commonly known as flat bark beetles due to their dorsoventrally flattened body form, an adaptation for living under bark and in other tight spaces. The species has been documented in Central America and North America, with distribution records extending as far north as British Columbia, Canada.
Silvanus planatus
Plain Silvan Flat Bark Beetle
Silvanus planatus is a species of silvanid flat bark beetle in the family Silvanidae. It is found in North America and Oceania. The species was described by Germar in 1824. Very little specific biological information is available for this species.
Silvanus proximus
Silvanus proximus is a species of silvanid flat bark beetle described by Grouvelle in 1904. The genus Silvanus belongs to the family Silvanidae, a group of small beetles commonly found in association with decaying plant material and stored products. Distribution records indicate presence across multiple continents including Africa, the Caribbean, Middle America, North America, and South America. The species is part of a genus containing approximately 20 described species, though detailed biological information for S. proximus specifically remains limited in published literature.
Silvanus unidentatus
Silvanus unidentatus is a small bark-dwelling beetle in the family Silvanidae, measuring 2.3–2.8 mm. Native to the Palaearctic region across 33 countries plus Korea, it has been introduced to North America and Chile. The species inhabits the space beneath tightly attached bark of dead broadleaved trees, where both larvae and adults develop. It has been the subject of genome sequencing research, yielding a chromosome-level assembly of 187.15 Mb.
Uleiota debilis
A small silvanid flat bark beetle found in North America. Adults are reddish-brown in color. The species is documented from Canada (Manitoba, Nova Scotia, Ontario) and the United States.