taxonID	type	description	language	source
03BB87F8D732FFE7FF9DF856FA69062E.taxon	materials_examined	Material examined. MALAYSIA – 1 ♀, Terengganu, Gelam forests, Terengganu districts, Peninsular Malaysia; 25 - VI- 2022, 4 ° 52 ' 44.9 " N, 103 ° 22 ' 22.6 " E; 1 ♀, 25 - V- 2023, 4 ° 52 ' 45.7 " N 103 ° 22 ' 29.7 " E; 1 ♀, 24 - VIII- 2023, 5 ° 12 ' 34.5 " N, 103 ° 11 ' 47.3 " E; leg.: M. I. I. Mamat, M. A. H. Ahmad Wizam. Sweep net, UMT. Morphology. Body length: 20 – 23 mm (Figs 3, 5), Wing (Fig. 3 D) length: 18 mm. Habitus: Large, strongly metallic fly, vivid blue reflections, blue head to abdomen and half-dark brown wings (Fig. 3 A – C). Axona chalcopyga is a distinctive fly that is easily recognized by its impressive size and metallic blue whole body. Their large size typically measures 20 – 22 mm in body length. Adorning their unique yellow markings concentrated at the tips of the abdomen, which further enhances their visual appeal. Head: Eye black, frons blue with very short pile, parafacial with short silver pile, facial tubercle well developed, face at level of antennae narrower than an eye. Postpedicel predominantly black-grey, shorter than high, arista longer than the antenna, ocellar triangle black, slightly elevated and bare, occiput shiny blue with white hairs. Compound eyes separated (Fig. 4 A – C). Thorax: Dark blue metallic, scutum shiny blue and seemingly bare, scutellum with very short pile. Proepimeron shiny blue. Legs metallic blue, pulvillus yellow (Fig. 4 D – E). Wing: Strongly dark brown and black infuscated except posterior margin which is hyaline (Fig. 3 D). Abdomen: Oval-shaped with 5 visible segments, entirely shiny; terga 1 − 3 vivid blue except posterior margin of tergum 3 orange, terga 4 − 5 orange with short sparse dark brown pile at the tip of abdomen; in dorsal view, wider than scutum at the maximum scutum width (Fig. 4 F).	en	Mamat, Muhammad Izzelen Izzauddin, Bot, Sander, Syafiq, Muhammad Fatihah, Omar, Chik Maslinda, Abdullah, Daria Mathew, Nor Zalipah, Mohamed, Azmi, Wahizatul Afzan (2024): The metallic blue fly, Axona chalcopyga (Wiedemann, 1830) (Diptera: Syrphidae) in Gelam Forests, new to Malaysia. Journal of Insect Biodiversity and Systematics 10 (4): 725-735, DOI: 10.61186/jibs.10.4.725, URL: https://doi.org/10.61186/jibs.10.4.725
03BB87F8D732FFE7FF9DF856FA69062E.taxon	biology_ecology	Ecology. Specimens have been collected within fragmented and intact Gelam forests, the biome highly dominated by Gelam trees (Melaleuca cajuputi).	en	Mamat, Muhammad Izzelen Izzauddin, Bot, Sander, Syafiq, Muhammad Fatihah, Omar, Chik Maslinda, Abdullah, Daria Mathew, Nor Zalipah, Mohamed, Azmi, Wahizatul Afzan (2024): The metallic blue fly, Axona chalcopyga (Wiedemann, 1830) (Diptera: Syrphidae) in Gelam Forests, new to Malaysia. Journal of Insect Biodiversity and Systematics 10 (4): 725-735, DOI: 10.61186/jibs.10.4.725, URL: https://doi.org/10.61186/jibs.10.4.725
03BB87F8D732FFE7FF9DF856FA69062E.taxon	distribution	Distribution. Australia, Indonesia, Malaysia (New record), Papua New Guinea, Solomon Islands and Singapore.	en	Mamat, Muhammad Izzelen Izzauddin, Bot, Sander, Syafiq, Muhammad Fatihah, Omar, Chik Maslinda, Abdullah, Daria Mathew, Nor Zalipah, Mohamed, Azmi, Wahizatul Afzan (2024): The metallic blue fly, Axona chalcopyga (Wiedemann, 1830) (Diptera: Syrphidae) in Gelam Forests, new to Malaysia. Journal of Insect Biodiversity and Systematics 10 (4): 725-735, DOI: 10.61186/jibs.10.4.725, URL: https://doi.org/10.61186/jibs.10.4.725
03BB87F8D732FFE7FF9DF856FA69062E.taxon	discussion	Remarks. Previous records from Singapore indicate A. chalcopyga visiting the big sage (Lantana camara) flower. Our observation in Malaysia documented its association with the Gelam (Melaleuca cajuputi) flower.	en	Mamat, Muhammad Izzelen Izzauddin, Bot, Sander, Syafiq, Muhammad Fatihah, Omar, Chik Maslinda, Abdullah, Daria Mathew, Nor Zalipah, Mohamed, Azmi, Wahizatul Afzan (2024): The metallic blue fly, Axona chalcopyga (Wiedemann, 1830) (Diptera: Syrphidae) in Gelam Forests, new to Malaysia. Journal of Insect Biodiversity and Systematics 10 (4): 725-735, DOI: 10.61186/jibs.10.4.725, URL: https://doi.org/10.61186/jibs.10.4.725
