Amusurgus (Usgmona) genji (Furukawa, 1970)

Figs. 2A, 3A, 4A, 5A, 6A, 7A

Usgmona genji Furukawa 1970

Metiochodes genji Ichikawa et al. 2000

Amusurgus (Usgmona) genji He et al. 2010; He 2018

Material examined. 1 male, CHINA, Shanghai, Chenshan, 9-viii-2010, coll. He Zhu-Qing ; 1 nymph (female), CHINA, Zhejiang Prov., Ningbo, 12-viii-2010, coll. Guo Jiang-Li; 1 female, CHINA, Shanghai, Chongming, 23- viii-2010, coll. Fang Yan ; 1 male, CHINA, Shanghai, Chongming, 23-viii-2010, coll. Guo Jiang-Li; 8 females, CHINA, Shanghai, Chongming, 23-viii-2010, coll. Ye Shui-Song ; 3 males, CHINA, Shanghai, Dajinshandao, 16- viii-2016, coll. He Zhu-Qing ; 3 males & 2 females, CHINA, Zhejiang Prov., Hangzhou, 8-iv-2017, coll. He Zhu-Qing; 4 females, CHINA, Zhejiang Prov., Tianmushan, 17-viii-2018, coll. He Zhu-Qing.

Measurements (in mm). Male: SZ 6.49, PR 0.92, HF 4.53; Female: SZ 6.97–7.58/12.08–12.89, PR 0.92–1.03, HF 5.42–5.93, OV 3.47–4.3.

Distribution. China (Zhejiang, Shanghai), Japan.

Remarks. Both long and short wing forms exist in this species (Fig. 3A). Their head, thorax and veins are similar (Fig. 4A), but tympana are varied. We found only female individuals in long wing form. They have inner tympana, and outer ones are very small (Fig. 5 A-3). In short wing form, males have none tympanum on both sides (Fig. 5 A-1); some female individuals have small inner tympana (hind wing shed individuals?), and others have none tympanum as males (Fig. 5 A-2). Discussion of phylogenetics for this subgenus and species see remarks of Amusurgus bispinosus .

Amusurgus (Amusurgus) fulvus Brunner von Wattenwyl, 1893

Figs. 2B, 3B, 4B, 5B, 6B, 7B

Amusurgus fulvus Brunner von Wattenwyl 1893

Amusurgus (Amusurgus) fulvus He et al. 2010; He 2018

Amusurgus lateralis Chopard, 1969; He et al. 2010 synonym