Eugoa Walker 1858
Creators: name: Bayarsaikhan, Ulziijargal
name: Bucsek, Karol
name: Bae, Yang-Seop
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Eugoa

description: Key to the species of the genus Eugoa from Cambodia based on male genitalia
1 Tegumen shouldered................................................................................... 2
- Tegumen not shouldered................................................................................ 5
2 Valvae elongate, with rounded apex....................................................................... 3
- Valvae stout, with irregularly shaped apex.................................................................. 4
3 Uncus subtrapezoidal; inner surface of tegumen densely spinous; cornuti absent........................... E. gabrielae
- Uncus not subtrapezoidal; tegumen sparsely spinous internally; aedeagus with small apical spines and two sclerotized plates in vesica................................................................................... E. arguta n. sp.
4 Uncus almost 90ångled; tegumen with slender, finger-shaped apical branches; apex of valvae rectangular, with claw-shaped ampulla in 1/3; aedeagus with a bundle of short spines apically and an irregular cornutus in vesica......... E. obliquipuncta
- Uncus not 90ångled; tegumen with membranous, arch-shaped apical branches; apex of valvae finger-shaped, with leaf-shaped ampulla in basal area; aedeagus with a spine-shaped cornutus............................................. E. latera
5 Apical process of sacculus present....................................................................... 6
- Apical process of sacculus absent......................................................................... 8
6 Saccular process bifurcated; juxta distinct................................................................. 7
- Saccular process not furcated; juxta indistinct.......................................................... E. nata
7 Saccular process asymmetrically bifurcated; apex of valvae rounded; juxta X-shaped; aedeagus with an irregular cornutus.......................................................................................... E. vasta n. comb.
- Saccular process symmetrically bifurcated; apex of valvae rectangular; juxta triangular; aedeagus with several spine-shaped cornuti..................................................................................... E. bidentata
8 Valvae with digitate ampullae........................................................................... 9
- Valvae without digitate ampullae........................................................................ 10
9 Ampullae slender, covered with setae whole of length.................................................. E. khmera
- Ampullae robust, inner surface setose............................................................ E. malayicola
10 Valvae symmetrical................................................................................... 12
- Valvae asymmetrical.................................................................................. 11
11 Apex of valvae rounded; sacculus robus; juxta with two vertical, band-shaped plates; aedeagus sclerotized distal half.................................................................................................. E. tineoides
- Apex of valvae angled; sacculus slender; juxta with two arch-shaped plates; aedeagus sclerotized whole of length.................................................................................................... E. unicolora
12 Saccus weakly developed or absent...................................................................... 13
- Saccus well developed................................................................................ 17
13 Costal margin of valvae with a large medial spine-shaped process; saccus absent.................... E. formosicola n. st.
- Costal margin of valvae lacking a medial; saccus weakly developed............................................. 14
14 Apex of valvae rectangular............................................................................. 15
- Apex of valvae not rectangular.......................................................................... 16
15 Uncus slender, half the length of tegumen; apex of valvae sub-rectangular, not dentate apically; costal margin of valvae curved subapically, without hook-shaped subapical process.................................................... E. cernyi
- Uncus stout, with almost the same length of tegumen; apex of valvae rectangular, weakly dentate apically; costal margin of valvae curved medially, with hook-shaped subapical process......................................... E. kuznetzovi
16 Valvae robust, tapering, weakly angled apex, lacking spines........................................... E. tessellata
- Valvae slender, elliptical-shaped apex with two asymmetrical spines..................................... E. mangle
17 Valvae robust, with a large, conic process at middle of costal margin; saccus rounded, with almost half the length of tegumen............................................................................................. E. muluana
- Valvae slender, without a medial process; saccus not rounded................................................. 18
18 Saccus wineglass-shaped; apex of valvae rounded; aedeagus without cornutus....................... E. aliquotpunctata
- Saccus not wineglass-shaped; apex of valvae not rounded; aedeagus with cornutus................................. 19
19 Valvae tapering with acute apex; saccus boat-shaped; aedeagus with a slender spine........................ E. bipuncta
- Valvae elongate with weakly dentate apex; saccus rectangular; aedeagus with a bundle of short spines............ E. lucea
description: Published as part of Bayarsaikhan, Ulziijargal, Bucsek, Karol & Bae, Yang-Seop, 2018, A review of the genus Eugoa Walker (Lepidoptera, Erebidae, Arctiinae, Lithosiini) in Cambodia, with the description of a new species, pp. 469-494 in Zootaxa 4403 (3) on pages 470-471, DOI: 10.11646/zootaxa.4403.3.3, http://zenodo.org/record/1212899