Corresponding author: Mei-Jun Zhao (
Academic editor: V. Assing
Material of the paederine genera
Peng Z, Sun Z, Li L-Z, Zhao M-J (2015) Four new species and additional records of
Sixteen species of
Covering an area of 249.07 km2, the Dayao Mountains are situated in central Guangxi, southern China. The highest peak is the Shengtang Shan at 1,979 m. According to
In 2011 and 2014, Jia-Yao Hu, Zi-Wei Yin, Xiao-Bin Song, Yi-Ming Yu, Zhu-Qi Yan and the first author made two collecting trips to Dayao Mountains, where they collected numerous
The following abbreviations are used in the text, with all measurements in millimeters:
Body length (BL) from the anterior margin of the mandibles (in resting position) to the abdominal apex; length of forebody (FL) from the anterior margin of the mandibles to the posterior margin of the elytra; head length (HL) from the anterior margin of the frons to the posterior margin of the head; head width (HW): maximum width of head; length of antenna (AnL); length of pronotum (PL) along midline; maximum width of pronotum (PW); elytral length (EL) at the suture from the apex of the scutellum to the posterior margin of the elytra (at the sutural angles); length of aedeagus (AL) from the apex of the ventral process to the base of the aedeagal capsule.
The type material is deposited in the Insect Collection of Shanghai Normal University, Shanghai, China (SNUC).
Holotype: ♂, labelled ‘China: Guangxi Prov., Jinxiu Hsien, Shengtang Shan,
Measurements (in mm) and ratios: BL 10.23–10.66, FL 5.67–5.84, HL 1.54–1.57, HW 1.44–1.51, AnL 3.56–3.67, PL 1.67–1.74, PW 1.39–1.44, EL 1.41–1.48, AL 1.07, HL/HW 1.04–1.07, HW/PW 1.04–1.06, HL/PL 0.90–0.92, PL/PW 1.20–1.22, EL/PL 0.84–0.86.
Habitus as in Fig.
Head (Fig.
Pronotum (Fig.
Each elytron with more or less irregular longitudinal narrowly elevated ridges; suture elevated in posterior two thirds; macropunctation coarse and partly somewhat seriate; interstices with irregular micropunctation. Hind wings reduced. Protarsomeres I–IV distinctly dilated.
Abdomen with fine and dense punctation on tergites III–VIII; posterior margin of tergite VIII weakly convex (Fig.
Male. Sternites III–VI unmodified; sternite VII (Fig.
Female. Posterior margin of sternite VIII (Fig.
Based on more or less irregular longitudinal elevations of elytra, the derived morphology of the aedeagus and particularly on the shapes and chaetotaxy of the male sternites VIII,
The species is dedicated to Wei-Jun He, specialist of
The type locality is situated in the Shengtang Shan to the southwest of Jinxiu, central Guangxi. The specimens were sifted from leaf litter in a rhododendron forest at altitudes of 1,200–1,400 m, together with
China: Guangxi: 1 ♂, Jinxiu Hsien, Shengtang Shan,
Holotype: ♂, labelled ‘China: Guangxi Prov., Jinxiu Hsien, Qigongli,
Measurements (in mm) and ratios: BL 6.85–6.91, FL 2.96–3.06, HL 0.78–0.85, HW 0.80–0.84, AnL 1.58–1.63, PL 1.05–1.09, PW 0.84–0.87, EL 0.59–0.63, AL 0.85, HL/HW 0.98–1.01, HW/PW 0.95–0.97, HL/PL 0.74–0.78, PL/PW 1.25, EL/PL 0.56–0.58.
Habitus as in Fig.
Habitus of
Head approximately as long as broad; punctation moderately coarse and sparse, sparser in median dorsal portion; interstices with distinct microreticulation; eyes very small and composed of approximately 20 ommatidia.
Pronotum nearly parallel-sided; punctation similar to that of head; impunctate midline broad; interstices without microsculpture.
Elytral punctation moderately dense, shallow and ill-defined. Hind wings completely reduced. Protarsi with weakly pronounced sexual dimorphism.
Abdomen with fine and moderately dense punctation, that of tergite VII somewhat sparser than that of anterior tergites; interstices with shallow microsculpture; posterior margin of tergite VII without palisade fringe; tergite VIII without sexual dimorphism, posterior margin (Fig.
Male. Sternites III-VI unmodified; sternite VII (Fig.
Female. Posterior margin of sternite VIII (Fig.
The new species resembles
The specific epithet is derived from Jinxiu, where the type locality is situated.
The type locality is situated in Qigongli to the north of Jinxiu, central Guangxi. The specimens were sifted from leaf litter and humus in a beech forest at an altitude of 1,300 m, together with
Holotype: ♂, labelled ‘China: Guangxi Prov., Jinxiu Hsien, Shengtang Shan,
Measurements (in mm) and ratios: BL 9.17–9.40, FL 4.00–4.11, HL 1.05–1.11, HW 1.05–1.15, AnL 2.00–2.15, PL 1.48–1.51, PW 1.18–1.26, EL 0.78–0.83, AL 1.90–1.93, HL/HW 0.97–1.00, HW/PW 0.89–0.91, HL/PL 0.71–0.74, PL/PW 1.20–1.25, EL/PL 0.53–0.55.
Habitus as in Fig.
Head approximately as long as broad; punctation coarse and moderately dense, somewhat sparser in median dorsal portion; interstices with shallow microreticulation; eyes small and composed of approximately 30 ommatidia.
Pronotum nearly parallel-sided; punctation similar to that of head; impunctate midline moderately broad; interstices glossy and without microsculpture.
Elytral punctation dense and well-defined. Hind wings completely reduced. Protarsi without sexual dimorphism.
Abdomen with fine and dense punctation, that of tergite VII sparser than that of anterior tergites; interstices with distinct microsculpture; posterior margin of tergite VII without palisade fringe; tergite VIII without sexual dimorphism, posterior margin (Fig.
Male. Sternites III-VI unmodified; sternite VII (Fig.
Female. Posterior margin of sternite VIII (Fig.
Based on the modifications of the male sternite VIII, the furcate ventral process of the aedeagus, the presence of long sclerotized spines in the internal sac of the aedeagus, and the divided female tergite IX,
The specific name is the Chinese adjective “kuan” (broad). It refers to the broad ventral process of the aedeagus of this species, when compared with the other species known from Dayao Mountains.
The type locality is situated in the Shengtang Shan to the southwest of Jinxiu, central Guangxi. The specimens were sifted from leaf litter in a beech forest at an altitude of 1,160 m.
Holotype: ♂, labelled ‘China: Guangxi Prov., Jinxiu Hsien, Shengtang Shan,
Measurements (in mm) and ratios: BL 6.61–6.67, FL 3.11–3.34, HL 0.83–0.87, HW 0.82–0.88, AnL 1.66–1.68, PL 1.12–1.14, PW 0.85–0.90, EL 0.65–0.68, AL 1.26, HL/HW 0.99–1.01, HW/PW 0.96–0.98, HL/PL 0.74–0.76, PL/PW 1.27–1.32, EL/PL 0.58–0.60.
Habitus as in Fig.
Head approximately as long as broad; punctation coarse and moderately sparse, distinctly sparser in median dorsal portion; interstices with shallow microreticulation; eyes small and composed of approximately 35 ommatidia.
Pronotum with weakly convex lateral margins in dorsal view; punctation similar to that of head; impunctate midline broad; interstices without microsculpture.
Elytral punctation moderately dense and defined. Hind wings completely reduced. Protarsi without pronounced sexual dimorphism.
Abdomen with fine and moderately dense punctation, that of tergite VII somewhat sparser than that of anterior tergites; interstices with shallow microsculpture; posterior margin of tergite VII without palisade fringe; tergite VIII without sexual dimorphism, posterior margin (Fig.
Male. Sternites III-VI unmodified; sternite VII (Fig.
Female. Posterior margin of sternite VIII (Fig.
Based on the different general morphology of the aedeagus,
The species is dedicated to Yu-Yang Lei, who supported us on our field trips.
The type locality is situated in the Shengtang Shan to the southwest of Jinxiu, central Guangxi. The specimens were sifted from leaf litter and humus in a rhododendron forest at an altitude of 1,300 m, together with
China: Guangxi: 2 ♂♂, 3 ♀♀, Jinxiu Hsien, Houzi Shan, Yinshan Station,
The above material was collected in several localities in the region to the north, east, and northwest of Jinxiu, central Guangxi. The specimens were sifted from deep leaf litter layers in mixed forests at altitudes of 860–1,300 m.
China: Guangxi: 5 ♂♂, 4 ♀♀, Jinxiu Hsien, Shengtang Shan,
China: Guangxi: 1 ♀, Jinxiu Hsien, Shiliugongli,
The above micropterous female represents an undescribed species distinguished from the other species known from Dayao Mountains by somewhat smaller body size, the slender pronotum and the female secondary sexual characters.
We are indebted to all the collectors mentioned above for their field work. We are most grateful to Volker Assing (Hannover, Germany) for his comments on, and linguistic revision of, an earlier version of the manuscript and to Wei-Jun He (Hongkong, China), Kun Qin (Guangxi, China), Yuyang Lei (Guangxi, China) and Rongjiao Zhang (Guangxi, China) for their extensive support during our collecting trips. We also thank two anonymous reviewers for their comments on a previous version of the manuscript. The study is supported by the National Natural Science Foundation of China (No. 31201734 and 31101659), the Foundation of Shanghai Municipal Education Commission (No. 12YZ077 and No. 13YZ062) and Shanghai Normal University (SK201234, DZL125 and B–9013–11–003127).