Phanoperla pallipennis (Banks, 1938)

Mo, Raorao, Wang, Ying, Wang, Guoquan & Li, Weihai, 2021, Review of Phanoperla (Plecoptera, Perlidae) from China, ZooKeys 1052, pp. 71-81 : 71

Phanoperla pallipennis (Banks, 1938)

Figures 5 , 6

Neoperla (Phanoperla) pallipennis Banks, 1938: 222; Illies 1966: 506.

Phanoperla pallipennis : Zwick 1982: 102; Du et al. 1999: 63; Li and Qin 2016: 193; Yang and Li 2018: 44.

Neoperlops binodosa Wu, 1973: 109. syn. nov.

Neoperla binodosa : Du et al. 1999: 63; Chen and Du 2016: 244; Yang and Li 2018: 44.

Type material

( Neoperlops binodosa Wu, 1973). 1 male and 1 female (with holotype and allotype labels) (IZCAS), China: Guangdong, Hainan, Yinggen (Hainan Province, Qiongzhong Li and Miao Autonomous County, Yinggen Town, 19.03°N, 109.83°E), 200 m alt., 1960.VII.5, Li Changqing (type no. 1466477-1466478) leg. Paratypes: 1 female (IZCAS), same data as for preceding (type no. 1466473); 1 male (IZCAS), same locality as for preceding, 1960.V.4, Li Suofu (type no. 1466474; 1960.VII.5, Li Changqing leg. in Wu 1973) leg.; 2 males (IZCAS), same locality as for preceding, 1960.V.10, Li Suofu (type no. 1466475-1466476; 1960.VII.5, Li Changqing leg. in Wu 1973) leg.; 2 males (IZCAS), same locality as for preceding, 1960.V.4, Li Changqing (type no. 1466480-1466481; 1960.VII.5 in Wu 1973) leg.; 1 male (IZCAS), Guangdong, Hainan, Tongshen (Hainan Province, Wuzhishan City, Tongshen Town, 18.76°N, 109.51°E), 350 m alt., 1960.III.25, Zhang Xuezhong (type no. 1466479) leg. Among these, one male and one female paratypes from Hainan, and a male from Yunnan was not found for checking.

Distribution.

Confirmed from Hainan province, but possibly also distributed in Yunnan province, as originally indicated.

Diagnosis and remarks.

Neoperlops binodosa Wu, 1973 was transferred to Neoperla by Du et al. (1999), but its status is still questionable because of the unknown male aedeagus ( Du et al. 1999; Yang and Li 2018). We transfer N. binodosa to Phanoperla and synonymize it with P. pallipennis (Banks, 1938) on the basis of the identical male terminalia and main aedeagal armatures (compare Zwick 1982: fig. 10a, d with Fig. 5 ). The subgenital plate of female specimens agrees well with the original description and figures by Wu (1973), being scarcely produced and without an apical notch (Fig. 6 ), which differs from the female paratypes of P. pallipennis . Therefore, we propose that female specimens in IZCAS may be not conspecific with male specimens and may even not belong to the genus Phanoperla . The female subgenital plate of Phanoperla is usually slightly produced and typically bilobed, with a sausage-like or balloon-like spermatheca ( Sivec et al. 1988; Cao and Bae 2009). Consequently, we boldly postulate that this female is Neoperla sp., because of the barely produced subgenital plate and a coiled spermatheca which is common in Neoperla . Unfortunately, the female specimens in the IZCAS are badly damaged and should be confirmed by new studies.

Figures

Figure 5. Phanoperla pallipennis (Banks, 1938) (male A, C holotype of Neoperlops binodosa Wu, 1973 B, D, E paratype of Neoperlops binodosa Wu, 1973) A aedeagus before eversion, dorsal view B apical part of aedeagus, dorsal view C aedeagus before eversion, lateral view D aedeagus, ventral view E aedeagus, lateral view. Scale bars: 0.20 mm.

Figure 6. Neoperla sp. (female; allotype of Neoperlops binodosa Wu, 1973) A terminalia, ventral view B vagina, dorsal view. Scale bars: 0.20 mm.