Arctornis in Singapore.

[Psyche]

Arctornis submarginata.
Widespread species.
Range India to Australia.
A minor pest on tea in NE India. Also feed on Cinnamomum species.
Female. reared from oak. India.
https://www.researchgate.net/profile...richophora.png

One observation matches Holloway's description well.
The frons have a band across the bases of the antennae & across the eyes, the two bands merging; palps ochreous shaded at the tip.
Feb 2917 Pasir Ris.
https://static.inaturalist.org/photos/6209209/large.jpg
FW with a discal black dot, & lightly corrugated scalings.
FW costa lightly edged ochreous & fringes light grey.
https://www.mothsofborneo.com/part-5...thini_1_46.php

From this the following observations can be included
Oct. 2020 Yio Chu Kang.Female (rounded FWs).
The triangular piece is part of the frons between the eyes.
https://inaturalist-open-data.s3.ama...4449/large.jpg
https://inaturalist-open-data.s3.ama...4454/large.jpg

Aug 2020 Woodlands Male.
https://inaturalist-open-data.s3.ama...734/large.jpeg
https://inaturalist-open-data.s3.ama...637/large.jpeg
https://inaturalist-open-data.s3.ama...739/large.jpeg

Aug 2014. Botanic Garden. Female.
https://inaturalist-open-data.s3.ama...3905/large.jpg
https://inaturalist-open-data.s3.ama...3904/large.jpg

[Psyche]

Arctornis hipparia.


This is an enigmatic species in as much as the type location is Singapore.
Holloway states the following features.
1. Satiny white with reflective scales coarse.
2. Fringes narrowly brownish ( Most Arctornis have the fringes grey).
3. Frons reddish & palps tipped ochreous.
4. Legs only faintly spotted.
https://www.mothsofborneo.com/part-5...thini_1_73.php


Only one observation comes close.
Probable A. hipparia. Aug. 2018. Mulu N.P. Sarawak. It helps that some of Holloway's specimens also came from Mulu.
https://inaturalist-open-data.s3.ama...6620/large.jpg

Added. This looks correct; Note coarse corrugations, brownish fringes & legs faintly spotted.
Aug. 2021 Bukit Panjang.
https://static.inaturalist.org/photo...4890/large.jpg

[Zicky]

Dear Doctor Seow

I shot the following Arctornis at bukit batok today. It has a discal spot, but the antenna,palps and frons are quite well hidden. I cant really decide if it has corrgated marks base on your comments, but i think its Arctornis riguata. I would like to hear your inputs.

Inat link - https://www.inaturalist.org/observations/146109518

Skipping regards
Zicky

[Psyche]

Post 13.
Unknown species.
There are many which can not be identified.

TL Seow; Cheers.

[Zicky]

Dear Doctor Seow,

Using your ID features, would the following observation be Actornis hipparia? This is shot by user Kleared on inaturalist
inat link - https://www.inaturalist.org/observations/148450319

This mating pair have wing fringes narrowly brownish and their legs seems to be faintly spotted, which is why i ID it as such, but i would like to hear your opinion on this observation

Secondly, is this following observation actornis rutila? Seems distinct with the yellow and brown patches overall
inat link - https://www.inaturalist.org/observations/147696761

Skipping regards
Zicky

[Psyche]

Post 15.
Just too difficult.
The wings have strong grey triangles on the dustal margins not seen in A. hipparia.
A. rhopica appear to be the nearest.
https://www.mothsofborneo.com/part-5...thini_1_34.php
Probable A. poecilonipha for comparison.
https://inaturalist-open-data.s3.ama...8089/large.jpg


The 2nd should be correct as A. rutila.



TL Seow: Cheers.

[Zicky]

No worries Doctor Seow! thanks for the attempt and understanding