Silba

Members of Silba can be distinguished from other Lonchaeidae genera by features of the male genitalia, which are frequently used in species-level taxonomy. The Silba admirabilis species group is characterized by partly yellow tarsomeres combined with distinctive male genitalia structures. Specific identification typically requires examination of male terminalia; keys and illustrations are available for species groups.

Habitats vary considerably among species. Some species develop in fig fruits (Ficus spp.), including both male and female figs. Silba ischnopoda develops in mature male figs of Ficus ischnopoda. Silba mitsuii larvae occur in flower buds of Camellia japonica. Silba fungicola develops in fungal fruiting bodies. The invasive pest Silba adipata is associated with cultivated and wild figs in Mediterranean-type climates.

Cosmopolitan; recorded from every continent except South America and Antarctica. Specific distribution records include: Mediterranean region, southern Europe, North Africa, Middle East, South Africa, Mexico, southern California (USA), Thailand, Cambodia, Japan, and Afrotropical region.

• Ficus - larval developmentMultiple species; S. adipata in fig fruits, S. ischnopoda in male figs of F. ischnopoda
• Camellia japonica - larval developmentS. mitsuii in flower buds
• Fungi - larval developmentS. fungicola in fungal fruiting bodies

Life cycle details vary by species. Silba adipata: eggs deposited in fig ostiole; larvae feed internally on fruit tissue; exit fruit through small hole; drop to soil and pupate; pupae overwinter; adults emerge in spring. Multivoltine with 4-6 generations per year under Mediterranean climate. Other species: larvae develop in male figs, flower buds, or fungal fruiting bodies.

Female Silba adipata use a long, sharp ovipositor to deposit egg clusters in fig ostioles, preferring unripe fruits. Adults feed on sap from overripe figs and show strong preference for milky latex secretions. Larvae of S. ischnopoda may be predaceous on fig wasp larvae based on development in male figs that support wasp larvae rather than seeds.

Some species appear to be primary consumers of plant material (fruits, flower buds), while at least one species (S. ischnopoda) may function as a predator of fig wasp larvae. The black fig fly (S. adipata) acts as a fruit pest causing premature fruit drop. Role of fungal-associated species (S. fungicola) unclear—may be saprotrophic or mycophagous.

Silba adipata (black fig fly) is a significant economic pest of fig production. Native to Mediterranean region; invasive in California (USA, 2021), Mexico (2020), and South Africa (2007). Threatens commercial fig production in California, which produces nearly 100% of U.S. fig crop. Monitoring uses McPhail-type traps baited with torula yeast or ammonium sulfate/hexanol mixtures. Orchard sanitation recommended for management.

• LonchaeaBoth genera in family Lonchaeidae; distinguished by genitalic and tarsal characters; at least one species transferred from Lonchaea to Silba based on admirabilis group characteristics
• Ceratitis capitata (Mediterranean fruit fly)Similar economic impact on fruit crops; distinguished by family-level characters (Tephritidae vs. Lonchaeidae) and host specificity (polyphagous vs. fig-specialist)
• Drosophila suzukii (spotted wing drosophila)Another invasive fly pest of soft fruits; distinguished by family (Drosophilidae), smaller size, and oviposition behavior (direct fruit skin penetration vs. ostiole entry)

• Lonchaeidae
• lance flies
• fig pests
• invasive species
• cosmopolitan
• multivoltine

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• black fig fly (Silba adipata) - Entomology Today
• black fig fly (Silba adipata) - Entomology Today
• Silba adipata Archives - Entomology Today
• Black Fig Fly: A New Invasive Pest in California
• McPhail trap - Entomology Today
• fig damage - Entomology Today
• A new species of Silba (Diptera; Lonchaeidae) associated with figs
• Two new species of Silba (Diptera; Lonchaeidae) from Japan with unusual larval development sites
• The Viability of Pollen from Natural Populations of Pinus brutia var. pityusa (Steven) Silba in the Mountainous Crimea
• A review of the Silba admirabilis McAlpine species group (Diptera: Lonchaeidae) with descriptions of thirteen new species from the Afrotropical region
• The Black Fig Fly, Silba adipata (Diptera: Lonchaeidae): Current Knowledge and Future Research Needs for an Invasive Pest of Fig Production.
• Color and Attractant Preferences of the Black Fig Fly, Silba adipata: Implications for Monitoring and Mass Trapping of This Invasive Pest.
• Sexual Development of Silba adipata (Diptera: Lonchaeidae): Effects of Diet, Ultraviolet Light and Fig Latex.
• Morphology of immature stages of the black fig fly Silbaadipata (Diptera, Lonchaeidae).
• Bioecological Parameters of the Black Fig Fly, Silba adipata (Diptera: Lonchaeidae), Collected from Fig Crops in Mexico.