Erythrophylloporus suthepensis is an easily identified, recently described ectomycorrhizal species (Vadthanarat et al. 2019). The genus Erythrophylloporus has only recently been segregated from Phylloporus (Zhang & Li, 2018). Phylloporus has been studied quite intensively in the area (Northern Thailand and Yunnan Province, China; Neves et al. 2012; Zeng et al. 2013; Ye et al. 2014; Zhao et al. 2018), and more broadly in Southeast Asia (e.g, Corner 1970) but Erythrophylloporus suthepensis has never been reported before its description in 2019. The species has been found only in Doi Suthep-Pui National Park, Northern Thailand. It is therefore inferred to be rare.
Forest cover in northern Thailand was reduced by more than 75 % between 1915 and 1995, mostly because of conversion to cropland (Delang, 2002). The same trend was observed in nearby areas of the Greater Mekong Subregion (WWF, 2015). Despite some conservation efforts (through the creation of National Parks), forests in northern Thailand are still under threat from human activities such as recurrent burning and understorey tea or coffee plantation. Therefore, the species is under threat by deforestation and forest degradation.

Erythrophylloporus suthepensis is an easily identified, recently described ectomycorrhizal species (Vadthanarat et al. 2019). The genus Erythrophylloporus has only recently been segregated from Phylloporus (Zhang & Li, 2018). Phylloporus has been studied quite intensively in the area (Northern Thailand and Yunnan Province, China; Neves et al. 2012; Zeng et al. 2013; Ye et al. 2014; Zhao et al. 2018), and more broadly in Southeast Asia (e.g, Corner 1970) but Erythrophylloporus suthepensis has never been reported before its description in 2019. The species has been found only in Doi Suthep-Pui National Park, Northern Thailand. It is therefore inferred to be rare.
Forest cover in northern Thailand was reduced by more than 75 % between 1915 and 1995, mostly because of conversion to cropland (Delang, 2002). The same trend was observed in nearby areas of the Greater Mekong Subregion (WWF, 2015). Despite some conservation efforts (through the creation of National Parks), forests in northern Thailand are still under threat from human activities such as recurrent burning and understorey tea or coffee plantation. Therefore, the species is under threat by deforestation and forest degradation.

Known only from Doi Suthep-Pui National Park, Chiang Mai Province, Thailand

Known only from Doi Suthep-Pui National Park, Chiang Mai Province, Northern Thailand, where the species was found in two nearby sites (Vadthanarat et al. 2019), with only one individual at each site. Although the sites were visited regularly, basidiomes were found only once in each site, so the subpopulation size is estimated to be at most 10 individuals.  Given that it never been observed outside the type locality, we estimate that up to 25 subpopulations could occur, for a total population size lower than 500.
Forest cover in northern Thailand was reduced by more than 75 % between 1915 and 1995, mostly because of conversion to cropland (Delang, 2002). The same trend was observed in nearby areas of the Greater Mekong Subregion (WWF, 2015). Despite some conservation efforts (through the creation of National Parks), forests in northern Thailand are still under threat from human activities such as recurrent burning and tea or coffee plantation.  Because Erythrophylloporus suthepensis is an ectomycorrhizal species found in Dipterocarp-dominated forests, it is inferred that the species has declined and is still under threat by deforestation and forest degradation.

In deciduous or semi-deciduous dry forests dominated by Dipterocarpaceae (mainly Dipterocarpus spp.). Hower, Fagaceae also occur in those forests. Presumably ectomycorrhizal, with Dipterocarpaceae or Fagaceae. Production of basidiomes seems to be erratic.

No immediate threat on the known population, but unknown populations outside of National Parks may be under threat. Forests cover in Northern Thailand was reduced by more than 75 % between 1915 and 1995, mostly because of conversion to cropland (Delang, 2002). Despite protection measures and reforestation, Thailand lost 7.8 % of Intact Forest Landscapes between 2000 and 2013 (Potapov et al 2017). In Northern Thailand, forests continue to be degraded by human activities (e.g., tea or coffee plantation, recurrent burning).

National Parks have been created in Thailand, beginning in 1962 (http://www.thainationalparks.com). The number and area of forests under protection should be increased. Burning of forested areas and understorey plantation of tea and coffee should be better controlled/limited.

The distribution needs to be better known. The ectomycorrhizal symbiotic partners should be identified.

No use known.

Corner EJH (1970) Phylloporus Quél. and Paxillus Fr. in Malaya and Borneo. Nova Hedwigia 20: 793–822.

Delang, C.O. (2002) Deforestation in Northern Thailand: the result of Hmong swidden farming practices or Thai Development Strategies? Society and Natural Resources 15 (6): 483-501.

Neves MA, Binder M, Halling R, Hibbett D & Soytong K (2012) The phylogeny of selected Phylloporus species, inferred from NUC-LSU and ITS sequences, and descriptions of new species from the Old World. Fungal Diversity, 55(1), 109-123.

Potapov P, Hansen MC, Laestadius L, et al. (2017) The last frontiers of wilderness: Tracking loss of intact forest landscapes from 2000 to 2013. Science Advances 3: e1600821. https://doi.org/10.1126/sciadv.1600821

Vadthanarat S, Amalfi M, Halling RE, Bandala V, Lumyong S, Raspé O (2019) Two new Erythrophylloporus
species (Boletaceae) from Thailand, with two new combinations of American species. MycoKeys, in press. https://
doi.org/10.3897/mycokeys.@.34570

Ye L, Mortimer PE, Xu J, Karunarathna SC & Hyde KD (2014) The genus Phylloporus (Boletaceae, Boletales), from Mekong River Basin (Yunnan Province, China). Chiang Mai Journal of Science, 41(4), 798-810.

Zeng NK, Tang LP, Li YC, Tolgor B, Zhu XT, Zhao Q & Yang ZL (2013) The genus Phylloporus (Boletaceae, Boletales) from China: morphological and multilocus DNA sequence analyses. Fungal Diversity, 58(1), 73-101.

Zhang M & Li TH (2018) Erythrophylloporus (Boletaceae, Boletales), a new genus inferred from
morphological and molecular data from subtropical and tropical China. Mycosystema 37(9): 1111‐1126.

Zhao K, Zeng NK, Han LH, Gao XY, Liu JT, Wu G, Wang S & Gu B (2018) Phylloporus pruinatus, a new lamellate bolete from subtropical China. Phytotaxa 372 (3): 212–220.