Maculolachnus

Gaumont, 1920

Maculolachnus is a of aphids in the Aphididae, established by Gaumont in 1920. in this genus are specialized feeders on woody plants in the family Rosaceae, particularly Rosa species. The genus has been documented in Europe, Northern America, and South Korea, with recent integrative taxonomic studies revealing previously unrecognized in East Asia.

Pronunciation

How to pronounce Maculolachnus: //ˌmæk.jə.loʊˈlæk.nəs//

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Habitat

Bark of young branches of Rosa spp. (Rosaceae); colonies observed on bark of young branches of Rosa hybrida, Rosa multiflora, and Rosa sp.

Distribution

Europe; Northern America; South Korea. GBIF records from Denmark, Norway, and Sweden. M. submacula reported throughout Europe, Pakistan, India, and Asia including Korean Peninsula; M. paiki to South Korea.

Diet

Feeds exclusively on woody within Rosaceae.

Host Associations

Rosa hybrida - bark of young branches
Rosa multiflora - bark of young branches
Rosa sp. - bark of young branches
Rosaceae - woody

Life Cycle

Multiple morphs documented: fundatrix, female, viviparous female, oviparae, male (nymph), and . Viviparous in fundatrix, apterous and alate females; oviparae present; sexual morphs observed in colonies.

Behavior

attendance observed; ant tunnels and ant access near the ground documented.

More Details

Taxonomic history

Originally described by Gaumont in 1920. Recent integrative taxonomic study (2025) in South Korea revealed hidden diversity, describing new M. koreanus sp. nov. and supporting four distinct species: M. submacula, M. sijpkensi, M. paiki, and M. koreanus sp. nov. COI divergence between M. koreanus and M. submacula exceeded 2.4%, surpassing typical barcode gap.

Species list

Maculolachnus rubi Ghosh & Raychaudhuri, 1972; Maculolachnus sijpkensi Hille Ris Lambers, 1962; Maculolachnus submacula (Walker, 1848); Maculolachnus paiki (Hille Ris Lambers, 1966); Maculolachnus koreanus Lee, Lee & Kim, 2025.