Metron hypochlora (Draudt, 1923)

Zhang, Jing, Cong, Qian, Shen, Jinhui & Grishin, Nick V., 2022, Taxonomic changes suggested by the genomic analysis of Hesperiidae (Lepidoptera), Insecta Mundi 2022 (921), pp. 1-135 : 45-46

Metron hypochlora (Draudt, 1923) is a species distinct from Metrocles schrottkyi (Giacomelli, 1911)

Inspection of the holotype photograph reveals that Evans (1955) misidentified Metrocles schrottkyi (Giacomelli, 1911) , a species with a narrow white ventral hindwing band prominently separated into spots by veins and whitish forewing spots, and assigned this name to Metrocles hypochlora Draudt, 1923 (type locality Peru: Madre de Dios), a species with the entire hindwing white band and yellow spots in forewing. Robbins et al. (1996) treated M. hypochlora as a subspecies of M. schrottkyi . Genomic sequencing confirms that M. hypochlora belongs to Metron Godman, 1900 (type species Pamphila chrysogastra Butler, 1870 ) and not to Metrocles Godman, 1900 (type species Metrocles leucogaster Godman, 1900 ) ( Fig. 11 ). Thus we reinstate Metron hypochlora as a specieslevel taxon and place Metron hypochlora tomba Evans, 1955 , new combination, as its subspecies.

Metron voranus ( Mabille, 1891) is a valid species with Augiades tania Schaus, 1902 as its junior subjective synonym

Sequencing of a ZMHB syntype of Pamphila voranus Mabille, 1891 (type locality Colombia), currently a junior subjective synonym of Metron zimra ( Hewitson, 1877) (type locality Brazil), reveals that it is not even in the same clade with M. zimra and instead is conspecific with Augiades tania Schaus, 1902 (type locality Brazil: Petropolis), currently a valid species of Chalcone Evans, 1955 (type species Augiades chalcone Schaus, 1902 , which is a subspecies of Pamphila briquenydan Weeks, 1901 ) ( Fig. 11 ). Phenotypic assessment agrees with this conclusion: the white discal band on ventral hindwing is of similar shape in P.voranus and A. tania that differs from that in M. zimra . We confirm that the P.voranus syntype agrees with the original description in all aspects, and bears labels in Mabille handwriting. To stabilize the usage of these names, the specimen in the ZMHB collection with the following seven rectangular labels: purple, printed || Origin ||, two white, handwritten (the second one might be in Mabille handwriting) || Columbia ||, || P.voranus | Mab. ||, white printed || Coll. | Staudinger ||, white handwritten || Voranus | Mab. ||, and two white printed || [barcode image] http://coll.mfn-berlin.de/u/ | 44a09b || DNA sample ID: | NVG-18043H03 | c/o Nick V. Grishin || is hereby designated by N.V.G. as the lectotype of Pamphila voranus Mabille, 1891 . Thus, we conclude that Augiades tania Schaus, 1902 as its junior subjective synonym of Metron voranus ( Mabille, 1891) , reinstated status.

Metron fasciata (Möschler, 1877) is a valid species with Pamphila verdanta Weeks, 1906 as its junior subjective synonym

Sequencing of the Pamphila fasciata Möschler, 1877 holotype from Suriname in the ZMHB reveals that this taxon is not monophyletic with Metron zimra ( Hewitson, 1877) (type locality Brazil), with which it was synonymized ( Evans 1955) ( Fig. 11 ). Phenotypically, discal white band on ventral hindwing reaches costa in M. zimra , but stops at vein C-Sc+R 1 in P. fasciata leaving a brown-olive background color space between the band and costa. Therefore, we reinstate it as a species Metron fasciata (Möschler, 1877) , reinstated status, and place Pamphila verdanta Weeks, 1906 (type locality Venezuela: Suapure) as its junior subjective synonym, because the hindwing band does not reach costa in the P. verdanta syntype.

Figures

Figure 11. Genomic tree of Hesperiina and relatives. See Fig. 1 legend for notations.