Philhelius are moderate to large hoverflies, most are somewhat wasp like. Little is known of their biology. Prior to 2018, they were known under the genus name Xanthogramma, a junior synonym.Evenhuis NL. Nomenclatural studies toward a World List of Diptera genus-group names. Part VI: Daniel William Coquillett. Zootaxa. 2018 Feb 18;4381(1):1-95. doi: 10.11646/zootaxa.4381.1.1. PMID: 29689947
Species Philhelius anisomorphum (Huo, Ren & Zheng, 2007) Philhelius caucasicus (Violovitsh, 1975) Philhelius citrofasciatus (De Geer, 1776) Philhelius coreanus (Shiraki, 1930) Philhelius dives (Rondani, 1857) Philhelius evanescens (Becker & Stein 19137) Philhelius flavipes (Loew, 1863) Philhelius hissaricus (Violovitsh, 1975) Philhelius kirgiristanus (Enderlein 19387) Philhelius laetus (Fabricius, 1794) Philhelius maculipennis (Mik, 1887) Philhelius marginalis (Loew, 1854) Philhelius pedissequus (Harris, 1778) Philhelius qinlingensis (Huo, Ren & Zheng, 2007) Philhelius sapporensis (Matsumura, 1916) Philhelius seximaculatus (Huo, Ren & Zheng, 2007) Philhelius sichotanus (Violovitsh, 1975) Philhelius stackelbergi (Violovitsh, 1975)
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