Aegus parallelus ( Hope, 1845 )

Pathomwattananurak, Wuttipon & Jiaranaisakul, Kawin, 2024, A new species of Aegus Macleay, 1819 (Coleoptera: Lucanidae: Lucaninae: Aegini) from Thailand with checklist of the genus species from the country, Zootaxa 5453 (3), pp. 341-358 : 354-355

Aegus parallelus ( Hope, 1845) , sensu auctorum

Aegus platycephalus Westwood, 1844: 101 . Type locality: non specified. Parry 1864: 92 (as synonym).

Aegus aequalis Westwood, 1844: 102 . Type locality: Oriente. Parry 1864: 92 (as synonym).

Aegus malabaricus Westwood, 1844: 102 . Type locality: Malabaria. Parry 1864: 92 (as synonym).

Aegus distinctus Westwood, 1844: 102 . Type locality: Oriente. Parry 1864: 92 (as synonym).

Lucanus parallelus Hope, 1845: 22 . Type locality: Prince of Wales Is., Kasyah Hills. Erroneous type locality according to Arrow (1950: 179).

Lucanus sinister Hope, 1845: 23 . Type locality: Molucca, Prince of Wales Is. Parry 1864: 92 (as synonym).

Lucanus capitatus Westwood, 1845: 275 . Type locality: Malacca. Replacement name for Lucanus platycephalus Westwood, 1844 .

Lucanus platycephalus : Westwood 1845: 275 (as homonym of Lucanus platycephalus Hope, 1842 ).

Lucanus aequalis : Westwood 1845: 276.

Lucanus malabaricus : Westwood 1845: 276.

Lucanus distinctus : Westwood 1845: 276.

Aegus capitatus : Parry 1864: 92; Ritsema 1889: 229; Van Roon 1910: 41; Arrow 1950: 179 (as synonym).

Aegus parallelus : Parry 1864: 92; Gemminger & Harold 1869: 960; Parry 1870: 112; Parry 1875: 18; Van Roon 1905: 150; Van Roon 1910: 42; Boileau 1913: 257; Gravely 1915: 410; Arrow 1935: 114; Arrow 1950: 179; Benesh 1960: 104; Bomans 1991: 144; Maes 1992: 103; Mizunuma & Nagai 1994: 287; Mizunuma 2000: 17; Krajcik 2003: 24; Pinratana & Maes 2003:241; Fujita 2010: 345; Makihara et al. 2015: 55; Yi 2023: 37.

Aegus simplex Nagai, 1994: 38 , pl. 125, fig.544 (1–4). Type locality: Genting Highland, W. Malaysia. Bomans & Benoit 2007: 63 (as synonym); Fujita 2010: 343.

Aegus storki Nagai, 1994: 38 , pl. 128, fig.566 (1). Type locality: Malay Penin , Pahang. Bomans & Benoit 2007: 63 (as synonym).

Aegus exilis Nagai, 1994: 38 , pl. 126, fig.549 (1–4). Type locality: Keningau, Sabah. Bomans & Benoit 2007: 11 (as synonym); Fujita 2010: 343.

Material examined (5♂♂, 2♀). Thailand: 1♂, 1♀ ( WPC), Nakhon Si Thammarat Prov., Thung Song Dist., Nam Tok , 21.V.2018, Aussawa Samudjit leg. ; 2♂ ( WPC), Yala Prov., Betong Dist. , 12.VI.2021, Suradet Sae-Liang leg. ; 1♂ ( WPC), Surat Thani Prov., Tha Chana Dist. , 14.XII.2020, local collector leg .; 1♂ 1♀ ( WPC), Kanchanaburi Prov., 2016, Jitthep Tunprasert leg.

Distribution. Myanmar, Malaysia, Indonesia and Thailand (Kanchanaburi, Ratchaburi, Surat Thani, Nakhon Si Thammarat, Trang and Yala Provinces). ( Mizunuma & Nagai 1994; Krajcik 2003; Pinratana & Maes 2003; Fujita 2010)

Remarks. Krajcik (2003) remarked that the name Aegus parallelus Hope, 1845 must be changed to Aegus platycephalus Westwood, 1844 , which has a priority to be senior synonym. However, A. platycephalus was combined to the genus Lucanus by Westwood (1845). The name Lucanus platycephalus ( Westwood, 1844) became a junior secondary homonym of Lucanus platycephalus Hope, 1842 . Thus, he gave it the replacement name as Lucanus capitatus Westwood, 1845 . Therefore, the senior synonym priority must be given to Aegus aequalis Westwood, 1844 instead.

Nevertheless, we are unable to examine the type material of Aegus aequalis Westwood, 1844 and Lucanus capitatus Westwood, 1845 and would leave the taxonomical solution to further studies. We suggest to examine all the types of the synonyms described by Westwood, 1844 and verify their actual status. As a result, we decide to maintain the name Aegus parallelus ( Hope, 1845) , sensu auctorum in this study.