13. Oligonychus mactus Tseng, 1990

Oligonychus mactus Tseng, 1990: 146.

Host and distribution.

Pinus sp. ( Pinaceae); Taiwan.

Remarks.

Oligonychus mactus Tseng was described from females only, and the male is unknown. Tseng differentiated the female from the females of O. clavatus (Ehara 1959) (described from Japan on Pinus spp.) and O. subnudus (McGregor 1950) (from USA on Pinus sp.), using the patterns of dorsal hysterosomal striae, the comparative lengths of prodorsal setae and the number of setae on tibia II (Tseng 1990). These three species inhabit Pinus spp., but were described from geographically well separated localities (Migeon and Dorkeld 2021). The male of O. mactus still needs to be collected and described from the type host and locality.