Eutus amazonicus Grishin, 2023

Zhang, Jing, Cong, Qian & Grishin, Nick V., 2023, Supplementary Materials and Appendix, Insecta Mundi 2023 (26), pp. 1-115 : 52-53

Eutus amazonicus Grishin , new species

https://zoobank.org/ FE50E403-652D-4E02-8EB3-6EAA7C30B600

( Fig. 5 part, 119–120, 350–352)

Definition and diagnosis. Phylogenetic trees reveal that specimens from the Amazonian region that were challenging to place belong to the genus Eutus Grishin, 2022 (type species Cobalus rastaca Schaus, 1902 ) and are the closest to Eutus yesta ( Evans, 1955) (type locality in Peru: Inambari) or its relative ( Fig. 5) but are phenotypically distinct and therefore represent a new species. Identified by the following combination of characters: wings are narrower than in E. yesta , forewing is with a contrasting black wedge-shaped brand at the base of forewing cell CuA 1 -CuA 2, hyaline spot shaped as an angle bracket distad of the brand, three round spots of decreasing size in cells M 3 -CuA 1, R 5 -M 1, and R 4 -R 5, and a small spot at the upper side of forewing discal cell; ventral forewing is with a large (about half of wing length) cream area near tornus, ventral hindwing with more or less apparent yellowish spots and a trace of a pale ray in the cell CuA 2 -1A+2A. In DNA, a combination of the following base pairs is diagnostic in the nuclear genome: aly1656.16.2:A48C, aly1656.16.2:A63G, aly4456.8.2:C72T, aly517.17.2:C372G, aly517.17.2:G516A, and COI barcode: A22G, T25C, T103C, T157C, T304C, A586C.

Barcode sequence of the holotype. Sample NVG-19121G08, GenBank OR837678, 658 base pairs: AACTTTATATTTTATTTTTGGGATCTGAGCAGGAATATTAGGAACTTCCTTAAGTTTATTAATTCGTACTGAATTAGGAAATCCGGGTTCTTTAATT GGAGACGATCAAATTTATAACACTATCGTTACAGCACATGCTTTTATTATAATTTTTTTCATAGTTATACCTATTATAATTGGTGGATTTGGAAATT GACTAGTTCCTTTAATATTAGGAGCTCCTGATATAGCTTTCCCACGAATAAATAATATAAGATTTTGAATATTACCCCCTTCTTTATTTTTATTAAT TTCAAGAAGAATCGTAGAAAATGGAGCAGGAACAGGATGAACAGTATACCCTCCTTTATCTTCTAACATTGCCCACCAAGGATCTTCTGTTGATTTA GCAATTTTTTCTCTACATTTAGCAGGAATTTCATCCATTTTAGGAGCTATTAATTTTATTACTACAATTATTAATATACGAATTAGAAATATATCAT TTGACCAAATACCTTTATTTGTATGATCTGTAGGTATTACCGCTTTATTACTACTCTTATCTTTACCTGTATTAGCTGGAGCTATTACTATACTTTT AACCGATCGAAATTTAAATACCTCATTCTTTGATCCTGCTGGAGGAGGAGATCCTATTTTATACCAACATTTATTT

Type material. Holotype: ♂ currently deposited in the National Museum of Natural History, Smithsonian Institution , Washington, DC, USA ( USNM), illustrated in Fig. 119–120, bears the following six rectangular labels, five white: [ PERU Madre De Dios | Rio La Torre 300m | Tambopata Res. | 5 Oct. ‘86 | S.S. Nicolay], [♂ genitalia | slide/vial # | H956 | Prep. S.S. Nicolay], [ Thoon ♂ | Det. ponka | S.S. Nicolay], [DNA sample ID: | NVG-19121G08 | c/o Nick V. Grishin], [USNMENT | {QR Code} | 01602763], and one red [HOLOTYPE ♂ | Eutus amazonicus | Grishin] . Paratypes: 1♂ NVG-22023D03, H20815 French Guiana, Montagne Favard, GPS 4.500, −52.050, 18-Sep-2003, B. Hermier leg. [BHermier] and 1♀: NVG-21048D10 62 km S of Ariquemes, linha C-10, 5 km S of Cacaulandia, 8-Oct-1994 O. Gomes leg. [ MGCL].

Type locality. Peru: Madre de Dios, Tambopata National Reserve, Rio La Torre, elevation 300 m.

Etymology. The name is for the Amazonian distribution of this species and is a noun in apposition.

Distribution. The Amazonian region: recorded from Peru, French Guiana, and Brazil.