taxonID	type	description	language	source
039687C8FFB74D7DFCC9F983FC71FC0D.taxon	materials_examined	Material examined: Thailand: Yala Prov., Betong Dist., 5 ° 53 ’ 07.5 ” N, 101 ° 01 ’ 17.6 ” E, S. Sae-Liang leg., 28. III. 2022, 1 ♂ (CTH).	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB74D7DFCC9F983FC71FC0D.taxon	discussion	Remarks and distribution. The species was originally reported from Borneo Island (Wada 2008) and has now been discovered in South Thailand for the first time. It is therefore likely its presence in the Malaysian mainland. Parastasia burmeisteri Ohaus, 1898 แมลงน ู นขาโตทรงร ี (Figs 2 – 3, 9 – 11, 22 – 23, 50)	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB74D7DFCC9F983FC71FC0D.taxon	materials_examined	Material examined: Thailand: Nakhon Si Thammarat Prov., Phrom Khiri Dist., Phrom Lok Subdist., C. Phothaworn leg., 18. XI. 2021, larval instar 3 in rotten log, 16. II. 2022, emerged, 1 ♂ (CTH); Nakhon Si Thammarat Prov., Phrom Khiri Dist., Thon Hong, Wang Lung Waterfall, C. Phothaworn leg., 2. IV. 2023, 1 ♀ (CTH).	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB74D7DFCC9F983FC71FC0D.taxon	discussion	Remarks and Distribution. The species has been report- ed from Malaysia, Indonesia, and the Philippines (Kuijten 1992). The current record represents the northernmost distribution of this species. In addition, the aedeagus of the above reported male specimen slightly differs from Kuijten’s description of Sundaic specimens: the concavity of the parameres in lateral view is very shallow, and the apices of the parameres are not curved downward as depicted in Kuijten’s figures. Parastasia dimidiata Erichson in Westwood, 1845 แมลง น ู นเขาแคระชายเลน (Figs 4, 12 – 14, 45)	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB74D7DFCC9F983FC71FC0D.taxon	materials_examined	Material examined: Thailand: Nakhon Si Thammarat Prov., Nopphitum Dist., C. Phothaworn leg., 6. V. 2023, 1 ♂ (CTH).	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB74D7DFCC9F983FC71FC0D.taxon	discussion	Remarks and distribution. The species was originally described in two separate publications. The first description appeared in Transactions of the Royal Entomological Society of London, Vol. 4, Part 1, authored by Erichson in Westwood (1845 a: 98). The second was published in the Proceedings of the Entomological Society of London, also by Westwood (1845 b: 101). While the Transactions and Proceedings were usually published together, an exception occurred between 1840 and 1846, during which they were issued separately. This irregular publishing practice led to discrepancies between the two sources, prompting later authors to treat their publication dates independently (Wheeler 1912). The Proceedings recorded a date range from 1 January to 4 March 1844, but its actual publication date was 1 October 1845. Meanwhile, Transactions Vol. 4, Part 1 was made publicly available on 7 April 1845. Kuijten (1992) reported that the species was previously known to inhabit small islands or coastal regions in India, Myanmar, Malaysia, Singapore, and Indonesia. Its wide distribution is likely linked to its bionomics, particularly its association with rotting Rhizophora L. (Rhizophoraceae) wood during the larval stage. This study officially report a new record of this species from South Thailand. Additionally, a photograph by Kunut Polwichai (2017) from Chumphon Province, Thailand, showed a P. dimidiata specimen with primarily yellowish elytra (Fig. 45), whereas the specimen examined in this study was completely dark.	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB64D7DFCC6FC63FBDDF96D.taxon	materials_examined	Material examined: Thailand: Nakhon Nayok Prov., Mueang Dist., Khao Yai National Park, Pha Trom Jai, 10. II. 2024, 1 ♂ (available images on iNaturalist ID natthaphat 2024); Yala Prov., Betong Dist., 5 ° 53 ’ 07.5 ” N, 101 ° 01 ’ 17.6 ” E, S. Sae-Liang leg., 30. III. 2022, 1 ♂ (CTH).	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB64D7DFCC6FC63FBDDF96D.taxon	discussion	Remarks and distribution. Since its original description by Ohaus (1900), Parastasia kraatzi had only been recorded from Sumatra Island. However, this study surprisingly reports its presence on the Asian mainland for the first time, at a location remarkably distant from the type locality. In fact, the species appears to have a much wider distribution across the Indochinese region than previously recognized. Additionally, a fresh male specimen was collected in a white rotting log, while the other one was caught by a light trap.	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB14D7AFF61FC23FD76F88D.taxon	discussion	Remarks and distribution. The taxon was first described from Sumatra, Indonesia (Westwood 1844). Its taxonomic status, along with that of P. discolor Westwood, 1841, was the subject of ongoing debate (Arrow 1899; Ohaus 1900). A later comprehensive revision reclassified it as a subspecies of P. discolor, determining that P. mirabilis and P. discolor scutellaris were indistinguishable. As a result, P. mirabilis was designated as a junior synonym, extending its known range from Sumatra to the Malay Peninsula (Kuijten 1992). In Wada’s dissertation (Wada 2015), the species was recorded in Phang Nga Province, South Thailand, under the name P. discolor mirabilis. In addition, the priority of the taxon is the same as in P. dimidiata.	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB14D7AFF61F8E3FB29F96D.taxon	discussion	Remarks and distribution. The species exhibits two distinct color morphs: a blackish variant, observed in India, Southwest China, Laos, and North Thailand, and a reddish variant, found from Southeast China to North Vietnam (Kuijten 1992; Zhao 2019). In Thailand, the species has been documented in the provinces of Nan and Chiang Mai (Wada 2015), with an intriguing discovery of additional blackish specimens found in a decaying log in Phetchabun Province, Central Thailand (Fig. 46). Parastasia masumotoi Wada & Muramoto, 1999 แมลง น ู นแดงเปล ี ่ ยน	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB14D7AFF61F8E3FB29F96D.taxon	materials_examined	Material examined: Thailand: Chiang Rai Prov., Wiang Pa Pao Dist., Khun Lao, R. Pornvannapet leg., 28. V. 2019, 2 ♂♂ (CTH).	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
039687C8FFB14D7AFF61F8E3FB29F96D.taxon	discussion	Remarks and distribution. Parastasia alternata Arrow, 1899 was locally recorded from Wiang Pa Pao by Ek-Amnuay (2008). However, it has been noted that this species is restricted to the Himalayan Region (Kuijten 1992; Zorn & Bezděk 2016; Zhao 2019). The diagnosis and recorded locality of P. alternata in Thailand differ from the specimens in those of earlier studies. Based on the locality, the recorded species may actually be P. masumotoi, which is endemic to Thailand. Additionally, the specimens used in this study were collected during the day.	en	Hongsuwong, Thitipong, Phothaworn, Chayaphol (2025): Notes on the Genus Parastasia Westwood, 1841 from Thailand (Coleoptera: Scarabaeidae, Rutelinae). Fragmenta entomologica 57 (1): 91-102, DOI: 10.13133/2284-4880/1681, URL: http://dx.doi.org/10.13133/2284-4880/1681
