Rhoenanthus obscurus Navás, 1922

Figs 10 G–I, 11

Rhoenanthus obscurus Navás, 1922: 58 (adults, Vietnam).

Potamanthindus auratus Lestage, 1931: 123 (female, Vietnam, synonymized by Bae and McCafferty 1991: 24).

Potamanthus sp. TPA Gose, 1969: 125 (nymph, attributed by Bae & McCafferty 1991: 24).

Rhoenanthus (Potamanthindus) obscurus: Bae and McCafferty 1991: 24 (all stages, Thailand).

Rhoenanthus obscurus: Kluge 2004: 223 .

Rhoenanthus (Potamanthindus) obscurus: Nguyen & Bae 2004: 9; Nguyen & Bae 2006: 22.

Diagnosis: Nymphs of Rhoenanthus obscurus can be distinguished from other species of the subgenus by strongly convergent and abruptly curved mandibular tusks, and apical 3/5 parts of them brown, smooth but basal 2/5 pale and with spines (Fig. 10G). The penes of male are relatively shorter than other congeners.

Distribution: Vietnam, Thailand, China (Yunnan, first record for China, Fig. 11).

Materials examined: 3♀♀, Menglun Botanical Garden, Mengla County; 6 L, Puwen town, Puer County; 3L, Fengshan town, Jinggu County, Yunnan Province, China, collected by Changfa ZHOU, IV- 2001 ; 1L, Huiji, Mengla County, Yunnan Province, China, collected by Jie ZHANG, 8-III-2013 ; 6 L Nagong Dam, Puwen Town, Jinghong City, Yunnan Province, China, collected by Ning DING, 1- IV- 2013; 8 L Tiaobahe Village, Mengyang Town, Jinghong City, Yunnan Province, China, collected by Ning DING, 27-III-2013 ; 1L, Mengyuandong, Mengla County, Yunnan Province, China, collected by Yunlei ZHOU, 14-III-2013 .