Trilocha varians

Trilocha varians
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Bombycidae
Genus:	Trilocha
Species:	T. varians
Binomial name
	Trilocha varians; (Walker, 1855)
Synonyms
	Naprepa varians Walker, 1855; Chazena velata Walker, 1869;

Trilocha varians is a moth in the family Bombycidae described by Francis Walker in 1855. It is widespread in the Oriental region from India, Sri Lanka, China, extending to Taiwan, the Philippines, Pakistan,[1] Sulawesi and Java.[2]

Description

The wingspan is 25–27 mm.[3] There are two colour varieties in the species; albicollis is the greyish form and varians is the reddish form.

Head, thorax and abdomen of males are pale or dark reddish brown. Forewings are pale reddish brown or greyish, with two antemedial curved waved lines. There is a dark patch on the outer margin below the apex. The costal edge is paler with cilia being dark reddish brown. Hindwings are pale or dark reddish brown or with greyish with outer reddish brown area. The postmedial line is indistinct. Ventral surface is paler with some dark red stripes.[4]

Larvae is elongate and brown with dark dots and a lateral row of black dots. There is a slight protuberance on each of the thoracic and 5th, 8th somites. A long slender horn can be seen on anal somite. The larvae feed on Streblus and Ficus species. A silken cocoon is oval and pale.[5] Pupation takes place in a boat-shaped cocoon, closely woven with white or yellow rather-papery silk. The pupa is pale yellow.

Subspecies

Trilocha varians varians
Trilocha varians lineata Dierl, 1978 (Philippines)

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References

Muhammad Ramzan, Unsar Naeem-Ullah, Naeem Iqbal, Zartasha Rasheed, Shafia Saba, Hafsah Ghaffar and Shafqat Saeed. Effect of temperature on the life cycle of Trilocha varians (Lepidoptera: Bombycidae) in Pakistan. Pure and Applied Biology. Vol. 9, Issue 1, pp436-442. http://dx.doi.org/10.19045/bspab.2020.90047
Holloway, Jeremy Daniel. "Trilocha Moore". The Moths of Borneo. Retrieved January 11, 2019.
"三角斑褐蠶蛾 Trilocha varians (Walker,1855)". 驚奇山行 [Surprise mountain line]. March 7, 2011. Retrieved November 7, 2018.
Hampson, G. F. (1892). The Fauna of British India, Including Ceylon and Burma: Moths Volume I. Taylor and Francis – via Biodiversity Heritage Library.
Immature Stages of Four Bombycidae Species of Taiwan Archived May 12, 2012, at the Wayback Machine

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[1] Muhammad Ramzan, Unsar Naeem-Ullah, Naeem Iqbal, Zartasha Rasheed, Shafia Saba, Hafsah Ghaffar and Shafqat Saeed. Effect of temperature on the life cycle of Trilocha varians (Lepidoptera: Bombycidae) in Pakistan. Pure and Applied Biology. Vol. 9, Issue 1, pp436-442. http://dx.doi.org/10.19045/bspab.2020.90047

[2] Holloway, Jeremy Daniel. "Trilocha Moore". The Moths of Borneo. Retrieved January 11, 2019.

[3] "三角斑褐蠶蛾 Trilocha varians (Walker,1855)". 驚奇山行 [Surprise mountain line]. March 7, 2011. Retrieved November 7, 2018.

[4] Hampson, G. F. (1892). The Fauna of British India, Including Ceylon and Burma: Moths Volume I. Taylor and Francis – via Biodiversity Heritage Library.

[5] Immature Stages of Four Bombycidae Species of Taiwan Archived May 12, 2012, at the Wayback Machine