Nemophora

Kozlov, Mikhail V., 2016, Taxonomic revision of Australian long-horn moths of the genus Nemophora (Lepidoptera: Adelidae), Zootaxa 4097 (1), pp. 84-100 : 85-86

Key to the Australian species of the genus Nemophora based on external characters

1. Forewing base below CuA stem unpatterned, of the same colour as the distal part of forewing........ N. laurella (Newman)

-. Forewing base below CuA stem with distinct pattern formed by yellow and/or dark brown scales, which markedly differs from the colour of the distal part of forewing.................................................................... 2

2. Fascia with large (0.4 × width of forewing) yellow stripe near the costal margin of forewing....... N. polydaedala (Turner)

-. Fascia without large yellow stripe; yellow scales are irregularly suffused among brown scales or form narrow lines........ 3

3. Glossy golden spot at forewing base short (<0.25 × FWL), not approaching internal margin of fascia (distance between the tip of golden spot and the internal margin of fascia>0.4 × spot length).............................................. 6

-. Glossy golden spot at forewing base long (>0.25 × FWL), closely approaching internal margin of fascia (distance between the tip of golden spot and the internal margin of fascia <0.4 × spot length)........................................... 6

4. Forewing relatively wide (WLR 0.37–0.42); fascia almost entirely dark brown, with several yellow scales in the middle; forewing base with one yellow spot extending from costa to dorsum........................... N. brachypetala (Meyrick)

-. Forewing relatively narrow (WLR 0.33–0.37); fascia consists of a mixture (approximately 1: 1) of dark brown and yellow scales; forewing base with two yellow spots: one at costa and another near dorsum................................ 5

5. Male: head dark brown; PLB longer, 0.45–0.55 × vertical eye diameter; dorsum coppery brown. Both sexes: yellow spot at the base of forewing usually reaches dorsal wing margin......................................... N. panaeola (Turner)

-. Male: head ochreous brown; PLB shorter, 0.35–0.45 × vertical eye diameter; dorsum glossy bronze. Both sexes: yellow spot at the base of forewing usually does not reach dorsal wing margin.................................... N. turneri Kozlov

6. Smaller (FWL 4.6–4.8 mm); forewing bronze; yellow spot at the base of forewing small, not reaching dorsal wing margin; apex of forewing with small dark brown spot isolated from tornal spot........................... N. opalina (Meyrick)

-. Larger (FWL 5.4 mm); forewing coppery brown; yellow spot at the base of forewing large, reaching dorsal wing margin; apex of forewing without small dark brown spot, although tornal spot may expand towards the apex........... N. doddi Kozlov

Key to the Australian species of the genus Nemophora based on male genitalia1

1. Phallus apically with two thin hook-shaped processes....................................................... 2

-. Phallus apically with one hook-shaped process or with a laterally flattened lobe................................... 3

2. Ventral margin of valva (in lateral view) semicircular, smoothly curved; vinculum relatively long (4.0 × length of valva); juxta short (0.3 × length of phallus); vinculum pointed proximally.................................. N. laurella (Newman)

-. Ventral margin of valva (in lateral view) bent in the middle; vinculum relatively short (3.2 × length of valva); juxta long (0.5 × length of phallus); vinculum widely rounded proximally.......................................... N. doddi Kozlov

3. Apex of phallus with laterally flattened lobe; valva of about the same length as tegumen; vinculum relatively short (2.2–2.7 × length of valva)...................................................................................... 4

-. Phallus apically hook- or corkscrew-shaped; valva longer than tegumen; vinculum relatively long (2.8–3.0 × length of valva).................................................................................................... 5

4. Tegumen hood-shaped, wide; valvae not fused to vinculum; valva with convex ventral margin and prominent base, extending laterally beyond the margins of vinculum............................................. N. brachypetala (Meyrick)

-. Tegumen nearly triangular, narrow; valvae fused to vinculum; valva with concave ventral margin and narrow base, not extending laterally beyond the margins of vinculum.............................................. N. opalina (Meyrick)

5. Basal half of valva in lateral view semicircular; tegumen dome-shaped, with medial indentation; medial process of transtilla wide (length equal to width)............................................................ N. panaeola (Turner)

-. Basal half of valva in lateral view rectangular; tegumen hood-shaped; medial process of transtilla narrow (length exceeds width nearly three-fold)................................................................... N. turneri Kozlov