Entomology

The giraffe-necked weevil, Trachelophorus giraffa, extends its prothorax into an absurd articulated neck used by males in contests and by females to roll a leaf nest. It is the emblem of Malagasy entomology because it captures the general pattern: lineages that arrived rarely, then diversified into forms with no counterpart elsewhere.

The comet moth, Argema mittrei, has a wingspan approaching twenty centimetres and tails that trail behind it; the adult has no functional mouthparts and lives only a few days. The flatid leaf bugs cluster in colour-graded aggregations on stems, nymphs trailing waxy filaments that make an entire branch appear to be flowering. The endemic hissing cockroaches of the genus Gromphadorhina produce sound through modified spiracles rather than by stridulation.

For a student, these are not curiosities. Each is a testable question about sexual selection, aposematism, life-history trade-offs or acoustic communication, and each can be studied in the field within a fortnight.

Participants are trained in the standard sampling armoury: Malaise traps for flying Diptera and Hymenoptera, pitfall arrays for ground-active Coleoptera and ants, beating trays, sweep netting, canopy fogging where permitted, light trapping with mercury vapour and UV, and Winkler extraction from leaf litter for the cryptic ant and beetle fauna.

Curation is taught to museum standard: killing and relaxing, pinning and pointing, spreading Lepidoptera, labelling with full collection data, and the discipline that a specimen without a label is worthless. Participants learn that a poorly documented specimen destroys the very information that justified taking it.

Permitting and ethics run through the whole programme. Malagasy law governs collection and export of biological material; we work under institutional permits with Malagasy partner collections, and material of scientific value is deposited in-country. Participants learn how the Nagoya Protocol and access-and-benefit-sharing frameworks apply in practice, which is training that few undergraduates receive anywhere.

Madagascar's ant fauna is one of the best-studied invertebrate groups on the island thanks to decades of systematic inventory, and it makes an ideal teaching system. Ants can be sampled quantitatively, sorted to morphospecies without prior expertise, and used to demonstrate community ecology principles: species accumulation curves, rarefaction, beta diversity between habitats, and the relationship between litter depth and richness.

Pollination is the other central theme. Madagascar's most famous ecological prediction, Darwin's inference that a moth with an extraordinarily long proboscis must exist to pollinate Angraecum sesquipedale, confirmed decades later with Xanthopan, happened here. Participants conduct pollinator observation watches, record visitation rates, and confront the fact that for most Malagasy plants the pollinator is simply unknown.

These modules train transferable quantitative skills: sampling design, effort standardisation, diversity indices, and the honest reporting of detection limits.

Insects in Madagascar are also an economic and public-health subject. Silk production from the endemic Borocera madagascariensis in the tapia woodlands supports highland livelihoods and depends on a specific forest type. The invasive fall armyworm and the recurring locust crises have shaped national food security. Malaria vectors and plague-transmitting flea populations connect entomology directly to Malagasy public health.

Participants engage with these applied dimensions through partner institutions and field visits, so that the discipline is never framed as pure collecting. The programme also introduces molecular approaches: DNA barcoding workflow, tissue sampling and preservation, and how sequence data now underpins Malagasy invertebrate taxonomy.

Our entomology staff include university lecturers and working taxonomists, several of whom have described new Malagasy species. Participants therefore learn from people who do this professionally, and a number of participant-collected specimens have contributed to genuine taxonomic work.