China (Guizhou, Anhui, Shandong, Fujian, Shaanxi).

This species was recently described by Du (1999) from the localities listed above including the Wuyi Mountain, but no new material was available to the present study.

1 male (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 735 m, 27°74.78'N, 117°68.31'E, light trap, 12 Jul. 2009, Li Shi and Xiaoyan Liu. Paratypes: 2 males, the same data as holotype, (CAU); 6 males, the same locality, 16 Aug. 2006, Hui Dong, (HIST).

Forewing length 15.6–16.0 mm. Distance between ocelli about as wide as diameter of the ocellus. Head slightly wider than pronotum, with an obscure quadrate dark stigma on frons and a brown area covering ocelli (Fig. 1a); compound eyes black and antennae dark; maxillary palpi brown. Pronotum with obscure rugosities and dark brown anterior and lateral margins, thorax mostly brown (Fig. 1a); wing membrane subhyaline, veins brown; legs brown but distal half of femora and basal one fourth and distal one sixth of tibia dark brown, tarsi dark brown (Fig. 2d).

Terminalia. The posterior margin of tergum 7 with quadrate, rounded and elevated process covered with dense sensilla basiconica (Fig. 2a). Tergum 8 with recurved tongue-like process (Figs 2a). Tergum 9 without sensilla basiconica. Hemitergal processes of tergum 10 with enlarged base and beak-like apex (Figs 1b and 2b). Aedeagal tube strongly sclerotized, with a pair of separate ventroapical lobes, in lateral view nipple like and triangular in shape (Figs 1c and 2c). Aedeagal sac short and gradually tapering to apex, forming nearly a right angle with tube; basal part unarmed and plump, median part with a patch of small spines and apex bearing fine spinules (Figs 1c and 2c).

Unknown.

The specific epithet refers to the short ventral lobe of aedeagal tube.

China (Fujian).

Neoperla brevistyla belongs to an informal group of species including Neoperla biprojecta Du, 2001, Neoperla duratubulata Du, 1999, Neoperla qingyuanensis Yang & Yang, 1995, Neoperla yentu Cao & Bae, 2007 that bear similar terminalia, sclerotized aedeagal tube and short sac, and a pair of separate ventral lobes of aedeagal tube (for comparison, see figs 3–4, 7 in Li et al. 2013, figs 25–13 in Du 1999, figs 75–77 in Stark and Sivec 2008, and Fig. 6). This species shares a pair of short ventral aedeagal lobes with Neoperla biprojecta Du, 2001 (fig. 4 in Li et al. 2013), but the lobes of Neoperla brevistyla are triangular andstouter, a patch of dorsal armatures occurs at midlength of the sac (Fig. 1c) which is absent in Neoperla biprojecta.

No new material was available for examination. It was stated to be similar to Neoperla flavescens Chu, 1929 but bearing paired ventral aedeagal lobes (Du 1999). Neoperla duratubulata may be assigned to the above mentioned subgroup and seems similar to Neoperla qingyuanensis. The aedeagal sac of Neoperla duratubulata is a very short conical structure with several rows of subapical fine spinules and the head lacks distinct color pattern (modified from the original descriptions of Du 1999).

2 males, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27°74.78'N, 117°68.31'E, light trap, 6 Aug. 2006, Hui Dong.

China (Fujian and Henan provinces).

This species was recently described by Li et al. (2011). The color pattern and terminalia among the types and present material show no variations. The type material (figs 1-3 in Li et al. 2011) seems two teneral specimens where the fine spinules of aedeagal sac are not as well developed as of the present ones (Fig. 3).

1 male, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27°74.78'N, 117°68.31'E, light trap, 19 Aug. 2006, Xian Zhou; 4 males, same locality, 25 Sep. 2009, Tingting Zhang, (HIST).

China (Fujian).

This species was recently described by Du (1999). The original illustrations are rather small in print and show no details on the fine armatures of the sac but the detailed descriptions agree well with the fresh material. We present herein the detailed illustrations of the aedeagal sac for a better diagnosis of Neoperla lii.

2 males, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27°74.78'N, 117°68.31'E, light trap, 6 Aug. 2006, Hui Dong; 1 male, same locality, 19 Aug. 2006. Xian Zhou.

China (Zhejiang, Fujian).

This species was recently redescribed by Li et al. (2013). The head patterns of the examined types were faded. The illustrations of head pattern and fully extruded aedeagus are provided here on the fresh material to facilitate the identifying of Neoperla qinyuanensis.

4 males, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27°74.78'N, 117°68.31'E, 9 May 2004, Xingyue Liu.

Our specimens bear slight variation in the aedeagal sac armatures (Fig. 7): the subapical cluster of larger spines in Zhejiang specimens are not prominent in these ones; but they agree well with the Zhejiang one in terminalia features, the head and leg patterns.

3 males, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27°74.78'N, 117°68.31'E, light trap, 27 Jun. 2009, Li Shi and Xiaoyan Liu.

China (Fujian Province).

This species was recently recognized by Li et al. (2013) from Wuyi Mountain.

2 males, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27°74.78'N, 117°68.31'E, light trap, 12 Jul. 2009, Shi Li and Liu Xiao-Yan.

China (Fujian and Guangdong provinces).

This species was recently described from Guangdong by Li et al. (2012). The present specimens agree well with the type material.

4 males, (CAU), China: Fujian Province, Mt. Wuyishan, Sangang, 27.7478'N, 117.6831'E, 16 Aug. 2006, Hui Dong.

China (Fujian and Zhejiang provinces).

One of the present fresh specimens of Neoperla xuansongae shows a heavier head pattern than types (Fig. 8a), and a small mesodorsal patch of spines at base of the aedeagal sac is also present in types but was overlooked in the original descriptions (Fig. 8c).