56 Beetles described in 1842

Abryna coenosa is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from Taiwan and the Philippines.

Agapanthia alternans is a species of beetle in the family Cerambycidae. It was described by Gotthelf Fischer von Waldheim in 1842.

Agnia casta is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Agnia clara is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines. It feeds on Theobroma cacao.

Anoplophora horsfieldi is a species of beetles in the longhorn beetle family (Cerambycidae).

Anthia mannerheimi is a species of ground beetle in the subfamily Anthiinae. It was described by Chaudoir in 1842.

Apriona aphetor is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from Sumatra and the Philippines.

Aprophata eximia is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Abryna. It is known from the Philippines.

Aprophata notha is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Abryna. It is known from the Philippines.

Astathes levis is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Astathes perplexa is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines. It contains the varietas Astathes perplexa var. mniszechii.

The Mango-tree Longicorn Borer is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from China, Java, India, Laos, Nepal, Myanmar, the Philippines, Sulawesi, Sri Lanka, Thailand, Sumatra, and Vietnam. It feeds on plants including Mangifera indica and Quercus griffithii.

Blaesia is a genus of beetle of the subfamily Cetoniinae in the family Scarabaeidae. Its two species are found in southern South America. It is one of two genera in the subtribe Blaesiina.

Blaesia atra is a beetle of the family Scarabaeidae and subfamily Cetoniinae.

Blepephaeus agenor is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Monohammus. It is known from the Philippines.

Blepharida is a genus of leaf beetles of the subfamily Galerucinae. They have co-evolved with plants in the genus Bursera, which they feed on. The plants have developed a sticky, poisonous resin that sprays out when the leaves are bitten into, and the beetles have evolved to cut through the veins of the leaves to disable this mechanism first.

Bumetopia bilinea is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Callimetopus albatus is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Callimetopus irroratus is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Euclea. It is known from the Philippines.

Callipyrga turrita is a species of beetle in the family Cerambycidae, and the only species in the genus Callipyrga. It was described by Edward Newman in 1842 using a specimen obtained by Rupert Kirk at Woodside near Sydney. This species is endemic to coastal eastern Australia from Townsville in Queensland down to Glenmore in New South Wales. The adult beetles are attracted to light and have been collected on Geijera parviflora and Flindersia xanthoxyla.

Calosoma schayeri is a species of Carabidae that occurs in Australia. Like most Carabidae the larvae is predaceous. It is quite active at night when it is found hunting for slow-moving prey such as caterpillars. If handled it gives off an unpleasant scent.

Cereopsius luctor is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Monohammus. It is known from the Philippines.

Cereopsius praetorius is a species of beetle in the family Cerambycidae. It was described by Wilhelm Ferdinand Erichson in 1842, originally under the genus Lamia. It is known from the Philippines.

Cereopsius quaestor is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Monohammus. It is known from the Philippines and Moluccas.

Choeromorpha trifasciata is a species of beetle in the family Cerambycidae. It was described by Newman in 1842.

Coptodactyla glabricollis is a dung rhinoceros beetle of the family Scarabaeidae.

Coptops tetrica is a species of beetle in the family Cerambycidae. It was described by Newman in 1842, originally under the genus Agelasta. It is known from the Philippines.

Cypherotylus californicus, sometimes known as the blue fungus beetle or blue pleasing fungus beetle, is a species of pleasing fungus beetle in the family Erotylidae. It is recorded from Wyoming, Colorado, New Mexico, Arizona, California, Kansas, and the Mexican state of Sonora.

Cyriotasiastes rhetenor is a species of beetle in the family Cerambycidae, and the only species in the genus Cyriotasiastes. It was described by Newman in 1842.

Doliops geometrica is a species of beetle in the family Cerambycidae. It was described by Waterhouse in 1842.

Epepeotes plorator is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from Sulawesi and the Philippines.

Euchroea coelestis is a species of beetles of the family Scarabaeidae and subfamily Cetoniinae.

Eustathes flava is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines and Sulawesi. It contains the varietas Eustathes flava var. femoralis.

Glenea lepida is a species of beetle in the family Cerambycidae. It was described by Newman in 1842.

Gnoma jugalis is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Hexarthrius parryi, the fighting giant stag beetle, is a species of large stag beetles. It belongs to the genus Hexarthrius of the tribe Lucanini. It is classified under the subfamily Lucaninae of the stag beetle family Lucanidae.

Hippodamia convergens, commonly known as the convergent lady beetle, is one of the most common lady beetles in North America and is found throughout the continent. Aphids form their main diet and they are used for the biological control of these pests.

Homonoea patrona is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Ichthyodes biguttula is a species of beetle in the family Cerambycidae. It was described by Newman in 1842.

Mecyclothorax ambiguus is a species of ground beetle in the subfamily Psydrinae. It was described by Wilhelm Ferdinand Erichson in 1842.

Megacephala australasiae is a species of ground beetle in the subfamily of Carabinae. It was described by Hope in 1842.

Megapenthes lugens is a species of primarily European click beetle. The adult is black, narrow and 7–10 mm (0.28–0.39 in) long. The larvae feed on weevil larvae in the decaying trunks of beech and elm. In July 2010, the common name "queen's executioner beetle" was proposed following a competition.

Micraspis frenata, common name Striped Ladybird, is a ladybird species endemic to Tasmania and the mainland eastern states of Australia.

Monochamus alternatus, the Japanese pine sawyer, is a species of beetle in the family Cerambycidae. It was described by Frederick William Hope in 1842. It is known from Hong Kong, Vietnam, Laos, North Korea, South Korea, Japan, China, and Taiwan. It feeds on Pinus banksiana, Abies firma, Pinus armandii, Pinus massoniana, and Pinus densiflora. It serves as a vector for the nematode Bursaphelenchus xylophilus.

Oberea ruficeps is a species of beetle in the family Cerambycidae. It was described by Fischer von Waldheim in 1842.

Odontolabis cuvera, the Golden Stag Beetle, is a beetle of the Family Lucanidae, stag beetles.

Oncideres impluviata is a species of beetle in the family Cerambycidae. It was described by Ernst Friedrich Germar in 1842. It is known from Brazil, Argentina, Uruguay, and Paraguay. It feeds on Parapiptadenia rigida.

Paranhammus marcipor is a species of beetle in the family Cerambycidae, and the only species in the genus Paranhammus. It was described by Newman in 1842.

Pelonium leucophaeum is a species of checkered beetle in the family Cleridae. It is found in Central America and North America.

Penthea pardalis is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from Australia. It contains the varietas Penthea pardalis var. occidentalis.

Pterolophia digesta is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Pterolophia vitticollis is a species of beetle in the family Cerambycidae. It was described by Newman in 1842. It is known from the Philippines.

Rhyzobius ventralis, common names including Black Lady Beetle, Gumtree Scale Ladybird, is a ladybird species endemic to Tasmania and all the mainland states of Australia except the Northern Territory. It is also found in New Zealand, but not naturally. The earliest New Zealand record is Auckland, 1898

Stromatium longicorne is a species of beetle in the family Cerambycidae. It was described by Newman in 1842.

Trichodes nobilis is a beetle species of checkered beetles belonging to the family Cleridae, subfamily Clerinae. It can be found on Crete, in Greece, and Near East.

Xeloma leprosa is a species of scarab beetle belonging to the subfamily Cetoniinae. It is found in tropical regions of Africa including Namibia, Zimbabwe, Transvaal, Natal and Angola.