Plocama aucheri is known to occur in the Hajar Mountains, however it prefers low altitudes, and is considered as rare above c. 700 m and absent above c. 1,100 m (Feulner 2011). It is also recorded from the foot of Jebel Hafeet, where it is thought to be frequent (Perry 2008). Globally, this species is found from the Arabian Peninsula to Pakistan (Board of Trustees, RBG Kew 2019).

The species is widespread in the southern Hajar Mountains' wadis (Jongbloed et al. 2003) in the UAE but not confirmed for the Ru'us al-Jibal (Feulner 2011). The global range of this species is Asia-Temperate; from Turkey, Lebanon-Syria, the Arabian Peninsula (Saudi Arabia and the UAE) and Gulf States, and east to Iran (Board of Trustees, RBG Kew 2019).

This species is known from the mountains of the eastern UAE, from the Ru'us al-Jibal (occasional) in the north, to the Hajar Mountains (the 'Olive Highlands') in the south, where it is known to favour high elevations, persisting at altitudes above 700 m (Feulner 2014). It is known from a single anomalous low-altitude record in Wadi Wurayah National Park (Wadi Ghayl; Feulner 2016). Globally, this species is known from northeast Africa to Sudan (Board of Trustees, RBG Kew 2019).

The species is known from lower altitude hillsides from Masafi and Dibba (MEW 2010). It is described as being most common at high altitudes in the Ru'us al-Jibal, and can be found in scattered, usually relatively mesic, locations throughout this area (MEW 2010; Feulner 2011, 2016; G.R. Feulner pers. comm. 2020). Its native range is from the east of Egypt to Pakistan (Board of Trustees, RBG Kew 2019).

This species has been recorded from the southern Ru'us al-Jibal at elevations between 500 - 1,800 m (Feulner 2011). It is known from all elevations at Jebel Jais (M. Tsaliki pers. comm. 2019). It is known from several adjacent areas in Oman. Al Meharibi et al. (2019) consider the only record for the UAE to be from Wadi Wurayah, however the species is not cited for WWNP by either Judas (2016) nor Feulner (2016). Globally, its native range is from the eastern Mediterranean to Central Asia and the Arabian Peninsula, as well as eastern Africa (Eritrea to Ethiopia) (Board of Trustees, RBG Kew 2018).

The species is widespread and locally common within the Hajar Mountains (Jongbloed et al. 2003, Feulner 2011) and also occurs in the Ru'us al-Jibal, where it was locally common (and very common on the slopes at lower elevations in central Wadi Bih; Feulner 2011). Within the Hajar Mountains, records include the ridge of Jebel Qitab in the 'Olive Highlands' (Feulner 2014), and the Wadi Helo protected area, where it was one of the dominant species on south-facing slopes (El-Keblawy et al. 2016). The species also occurs within Wadi Wurayah National Park, where it is one of the characteristic perennial species (Feulner 2016). In addition, the species is present on Jebel Hafeet (Fawzi and Ksiksi 2012). The species is native to the Arabian Peninsula (Oman, Qatar, and the UAE) to Iran and Pakistan (Board of Trustees, RBG Kew 2019).

Within the UAE, this species generally occurs at rocky headlands along the Arabian Gulf coast (Jongbloed et al. 2003). It has also been recorded from offshore islands of the UAE (Sakkir et al. 2017). Globally, this species is native to Somalia and Socotra, in addition to the Arabian Peninsula and Pakistan (Board of Trustees, RBG Kew 2019).

In the UAE, Jongbloed et al. (2003) present scattered records across the eastern UAE, however the draft Red Data Book for the UAE, considers it to occur on sand and gravel plains from Al Ain and Khor Kalba (MEW 2010). The global range of this species is across much of northern Africa, through the Arabian Peninsula to Pakistan (Brink and Belay 2006, Board of Trustees, RBG Kew 2019).

Within the UAE this species is widespread across the southern desert of the country (Jongbloed et al. 2003, G.R. Feulner, in lit, MEW 2010). Globally, this species is native to the Gulf States, Saudi Arabia and Oman (Board of Trustees, RBG Kew 2019).

Within the UAE, it is considered to be widespread within the Hajar Mountains and the Ru'us al-Jibal (Jongbloed et al. 2003). This species has been recorded between 300-1200 m in the Ru'us al-Jibal (Feulner 2011). Globally, this species is native to north-east tropical Africa and the Arabian Peninsula (Board of Trustees, RBG Kew 2019).