Microperla qinlinga Chen, 2019,

Huo, Qing-Bo & Du, Yu-Zhou, 2019, Microperla qinlinga Chen reviewed with supplementary illustrations and the description of the nymph, Zootaxa 4706 (3), pp. 427-438: 428-429

publication ID

https://doi.org/10.11646/zootaxa.4706.3.3

publication LSID

lsid:zoobank.org:pub:E984D4EB-4EB0-41D7-86AE-9413B8BDCE99

persistent identifier

http://treatment.plazi.org/id/03EF9649-3E19-FF84-FF22-47733D42F4DF

treatment provided by

Plazi

scientific name

Microperla qinlinga Chen, 2019
status

 

Microperla qinlinga Chen, 2019 

Small size, body length 5.7–7.2 mm, forewing length 8.0–9.0 mm, hindwing length 7.0–8.0 mm. General color dark brown ( Fig. 2View FIGURE 2); body covered by fine setae, pores black. Triocellate, anterior ocellus very small. Gena pale brown. Pronotum width twice its length, dark-colored with rugosities ( Fig. 3View FIGURE 3).

Male: Abdomen with obvious lateral sclerites after emergence, two pale spots present on terga 1–3 ( Fig. 4View FIGURE 4). Anterior margin of tergum 10 strongly sclerotized, the sclerite becoming wider bilaterally; posteromedial half of tergum 10 sclerotized, curved upwards and forwards, terminal rounded and bearing several black setae ( Fig. 5View FIGURE 5). Aedeagus as a complex tridimensional structure, membranous, without any spines or sclerites. Aedeagus divided into three lobes: the basal lobe wide and possess a pair of “sheep horn-shaped” lateral arms; the middle lobe constricted ventrally with a pair of processes and the apical lobe expanded into two large lateral lobes and a small median-ventral lobe ( Fig. 6View FIGURE 6).

Female: Similar in habitus to male. Subgenital plate large and broad, posterior margin rounded with a median notch, variable, sometimes entire in some individuals ( Fig. 7View FIGURE 7).

Mature nymph: Body length ca. 5.8 mm. Gills absent. Body covered with pale hair. Head capsule wide approximately 1.1 mm. Anterior ocellus tiny, often indistinguishable ( Figs. 8–9View FIGURE 8View FIGURE 9). Lacinia short, fingerlike, with short brush on the inner edge; thin and ossified on apex with a row of serrations. Galea with a huge, developed crescent hairbrush. Mandible short, inner side with a basal tooth and two apical teeth; the first apical tooth shorter than M. brevicauda ( Uchida & Isobe 1989)  . A row of fine hairs between the second apical tooth to the basal tooth ( Fig. 10View FIGURE 10). Paraglossae shorter than glossae ( Fig. 11View FIGURE 11). Thoracic segments wide and rounded. Forewing pads almost triangular, short; forewing pads separated by a distance about 2X width, hindwing pads directly fused and not divergent from midline. Paraprocts short, nail shaped, covered with long setae ( Fig. 12View FIGURE 12). Cerci about 12 segments, half the length of the antennae, with setal fringe ( Fig. 13View FIGURE 13).

Material examined: 5♂♂, 8♀♀, 2 nymphs, China, Shaanxi Province, Xi’an City, Zhouzhi County, Qinling Mountains , Huaerping , 1280 m, 33°50.636′N, 107°49.969′E, 2019-IV-23, leg. Huo Qing-Bo, Shen YueGoogleMaps  ; 6 nymphs, Xi’an City, Zhouzhi County , Qinling Mountains , Heihe National Forest Park, 818 m, 33°53.406′N, 108°0.349′E, 2019-III-18, leg. Huo Qing-Bo, Zhao Meng-YuanGoogleMaps 

.

Remarks: Mature nymphs emerged on rocks along an unnamed river ( Figs. 14–15View FIGURE 14View FIGURE 15). It was observed that some emerging nymphs began to molt to adults exiting the river during the emergence peak ( Fig. 16View FIGURE 16). These pre-emergent adults were often swept away by the river current before successfully completing emergence. Fortunately, most emergent adults fully expanded their wings and moved safely to nearby dry rocks.