Scientists Discover New Blossom Midge Pest in Jasmine

ICAR Identifies Contarinia icardiflores Affecting Jasminum sambac

Scientists from the ICAR-Directorate of Floricultural Research (ICAR-DFR), Pune, have identified a new species of blossom midge infesting jasmine buds in India. The species, Contarinia icardiflores sp. nov., has been reported attacking Jasminum sambac , a key ornamental and commercial flower crop.

Emerging Threat to Jasmine Cultivation

Blossom midges of the genus Contarinia are recognised globally as destructive pests of agricultural and horticultural crops. The newly documented species has been observed damaging jasmine flower buds, leading to reduced flowering and direct economic losses.

Given India’s extensive jasmine cultivation — driven by demand in perfumery, religious use and the floral industry — the emergence of a new pest species raises concerns for growers, traders and exporters.

Integrative Taxonomic Identification

Although visually resembling Contarinia maculipennis , the previously known jasmine midge, the new species is genetically distinct. Researchers employed integrative taxonomy, combining morphological examination with molecular analysis.

Diagnostic differences were identified in reproductive structures, including female flagellomeres and cerci, as well as the male aedeagus. Molecular validation was achieved through sequencing of the mitochondrial cytochrome oxidase subunit I (COI) gene, a standard DNA barcoding marker.

Biological Characteristics and Impact

The species completes its life cycle within 16–21 days, enabling rapid population multiplication. Short reproductive cycles are typically associated with higher infestation intensity and management complexity.

Understanding lifecycle dynamics is essential for designing effective monitoring and intervention strategies.

Important Facts for Exams

• Contarinia belongs to family Cecidomyiidae (gall midges).

• COI gene is widely used in DNA barcoding.

• Jasminum sambac is an economically important flower crop.

• Integrative taxonomy uses morphological + molecular tools.