Orthonevra nitida ( Wiedemann, 1830 )

Miranda, Gil F. G., Soares, Matheus M. M. & Thompson, Christian, 2024, The Neotropical Orthonevra Macquart, 1829 (Diptera: Syrphidae), Zootaxa 5484 (1), pp. 1-78 : 7

Orthonevra nitida ( Wiedemann, 1830)

Chrysogaster nitidus Wiedemann, 1830: 116 . Lectotype male NMW, labeled: "nitidus, Coll. Wiedem."; " Chr. nitidus M., Amer. bor.".

Comments. There are also three male and two females designated as paralectotypes with either Wiedemann or Winthem collection labels.

Nomenclatural changes

After examination of the type of Chrysogaster lugubris Jaennicke , a specimen badly damaged and without head and abdomen, and its original description, we hereby remove it from Orthonevra since the specimen has a processive M1 vein (unlike any other Orthonevra ) and is much larger than the largest Neotropical Orthonevra we have seen (type wing length ~ 11.6mm vs Orthonevra gouletmasnerorum Miranda & Thompson sp. nov. ~ 6.4mm). The original description does mention that the specimen had green metallic reflections “ Thorax schwärzlich mit erzgrünen und kupferröthlichen Reflexen” and that it had a yellow marking anteriorly on the frons “ Stirne schwarz, am Vorderrande rostgelb ”, similar to that observed in Philippimyia cyanocephalus (Philippi) , a species endemic to Chile ( Barahona-Segovia et al. 2021, fig. 71–73). The lack of any new records for C. lugubris in the most recent catalog by Barahona-Segovia (2021) also supports this view. Without any other characters to aid in placing this species, it is currently left incertae sedis.