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Thread: Arctornis in Singapore.

  1. #11
    Join Date
    Nov 2010
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    Malaysia
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    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
    Last edited by Psyche; 28-Nov-2022 at 07:08 PM.

  2. #12
    Join Date
    Nov 2010
    Location
    Malaysia
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    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
    Last edited by Psyche; 01-Dec-2022 at 06:42 AM.

  3. #13
    Join Date
    May 2022
    Location
    Singapore
    Posts
    91

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    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
    Zick Soh

  4. #14
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    6,474

    Default

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

    TL Seow; Cheers.

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