Eurema simulatrix explained

Eurema simulatrix, the changeable grass yellow, is a butterfly in the family Pieridae. It is found from Burma to Sundaland, Cambodia and the Philippines.^[1] The habitat consists of secondary or disturbed habitats including forest clearings, roadsides and riverbanks, parks and gardens.^[2]

The length of the forewings is 21mm26mm for males and 19mm25mm for females.^[3] Adults have two cell spots on the underside of the forewings and a large, almost cleft, reddish-brown apical spot on the forewing.^[4]

Subspecies

The following subspecies are recognised:

• E. s. simulatrix (Philippines: Mindanao)
• E. s. princessae Morishita, 1973 (Palawan)
• E. s. tecmessa (de Nicéville & Martin, [1896]) (southern Burma, Peninsular Malaya, southern Thailand, Singapore, Sumatra, Java, Borneo) – de Nicéville's grass yellow
• E. s. sarinoides (Fruhstorfer, 1910) (Sikkim to Burma, northern Thailand, Laos) – scarce changeable grass yellow
• E. s. littorea Morishita, 1968 (Langkawi)
• E. s. inouei Shirôzu & Yata, 1973 (Thailand, Cambodia, Indo-China)
• E. s. tiomanica Okubo, 1983 (Tioman)

Eurema irena is sometimes treated as a subspecies of Eurema simulatrix.

Notes and References

1. http://www.repository.naturalis.nl/document/46743 The butterflies of Sulawesi: annotated checklist for a critical island fauna
2. http://www.learnaboutbutterflies.com/Malaysia%20-%20Eurema%20simulatrix.htm Butterflies of Thailand, Malaysia & Borneo
3. Web site: A Taxonomic Study of the Genus Eurema Hübner, [1819] (Lepidoptera: Pieridae) in Thailand . 2011-10-14 . 2012-04-25 . https://web.archive.org/web/20120425064423/http://www.biology.sc.chula.ac.th/NHJCU/9-1/1.chariya%203.pdf . dead .
4. Web site: Butterfly Circle . 2011-10-14 . https://web.archive.org/web/20120406102257/http://www.butterflycircle.com/checklist%20V2/CI/index.php/start-page/startpage/showbutterfly/27 . 2012-04-06 . dead .