Corresponding author: Yun-long Zhao (
Academic editor: Volker Assing
Two new species of the genus
The genus
The specimens from Yunnan Province contained another two undescribed species,
The types are deposited in the Insect Collections of Department of Biology, Shanghai Normal University, Shanghai, P. R. China (SHNUC).
The specimens were collected from decaying leaf litter of forest floors by hand sifting. They were killed with ethyl acetate and dried. To examine the male genitalia, the last four abdominal segments were detached from the body after softening in hot water. The aedeagi and sternites were mounted in Euparal on plastic slides. Drawings were made using an Olympus SZ61 microscope. Photos were taken with an Olympus E420 camera mounted on an Olympus SZX12 stereoscope. Material of other Yunnanese
Body length: measured from anterior margin of labrum to end of abdomen;
Forebody length: measured from anterior margin of labrum to elytral apices;
Eye length: longitudinal length of eye in dorsal view;
Postocular length: length of postocular portion in dorsal view;
Head width: width of head across eyes;
Pronotum width: width of pronotum across the widest part;
Elytra width: width of elytra across the widest part;
Head length: measured from front margin of head to its posterior margin;
Pronotum length: measured from front margin of pronotum to its posterior margin;
Elytra length: measured from humeral angle to apicolateral angle.
CHINA: Holotype: Yunnan Prov.: male, Jinghong City, Nabanhe Nature Reserve, Benggangxinzhai, 1,750m, 16. XI. 2008, Hu Jia-Yao & Tang Liang leg. Paratypes: 2 females, Jinghong City, Nabanhe Nature Reserve, Bengganghani, Nanmugahe, 1,700m, 11. XI. 2008, Hu Jia-Yao & Tang Liang leg.; 1 female, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,800m, 14. XI. 2008, Hu Jia-Yao & Tang Liang leg.; 5 males, 8 females, same locality as holotype, 3. V. 2009, Hu Jia-Yao & Yin Zi-Wei leg.; 1 female, Jinghong City, Nabanhe Nature Reserve, Bengganghani, Nanmugahe, 1,700m, 27. IV. 2009, Hu Jia-Yao & Yin Zi-Wei leg.; 3 females, Jinghong City, Nabanhe Nature Reserve, Bengganghani, Chuguohe, 1,700m, 28. IV. 2009, Hu Jia-Yao & Yin Zi-Wei leg.; 1 male, 1 female, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,650m, 29. IV. 2009, Hu Jia-Yao & Yin Zi-Wei leg.; 1 male, Jinghong City, Nabanhe Nature Reserve, Bengganghani, Nanmugahe, 1700m, 30. IV. 2009, Hu Jia-Yao & Yin Zi-Wei leg.; 4 females, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,650m, 30. IV. 2009, Hu Jia-Yao & Yin Zi-Wei leg. SHNUC.
Habitus of
Body length: 5.8–6.4 mm; forebody length: 3.3–3.5 mm.
Head suborbicular, longer than wide (length/width = 1.18); postocular portion 1.96 times as long as eye length; punctation coarse, dense, and umbilicate; interstices reduced to narrow ridges. Antennae slender; relative length of each segment from 1 to 11: 42.0 : 15.0 : 29.0 : 23.0 : 22.5 : 22.0 : 19.0 : 17.0 : 15.5 : 14.0 : 20.0; relative width of each segment from 1 to 11: 12.0 : 7.5 : 6.0 : 6.0 : 6.0 : 6.0 : 6.0 : 6.0 : 6.0 :7.5 : 7.5.
Pronotum convex, oval, longer than wide (length/width = 1.20), narrower (pronotum/head = 0.93) and shorter (pronotum/head = 0.94) than head; prosternum with strong longitudinal median carina, which disappears behind anterior margin. Elytra shorter than wide (length/width = 0.91), distinctly shorter (elytra/pronotum = 0.74) and slightly narrower (elytra/pronotum = 0.97) than pronotum.
Abdomen elongate, tergites without any microsculpture. Seventh sternite (
Details of
The new species is similar to
The specific name is derived from the name of the type locality: Nabanhe Nature Reserve.
CHINA: Holotype: Yunnan Prov.: male, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,930m, 14. XI. 2008, Hu Jia-Yao & Tang Liang leg. Paratypes 1 male, same data as holotype; 1 female, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,900m, 1. V. 2009, Hu Jia-Yao & Yin Zi-Wei leg. SHNUC.
Body length: 6.1–6.4 mm; forebody length: 3.3–3.6 mm.
Head suborbicular, slightly longer than wide (length/width = 1.07); postocular portion 2.14 times as long as eye length; punctation coarse, dense, and umbilicate; interstices reduced to narrow ridges. Antennae slender; relative length of each segment from 1 to 11: 42.0 : 13.5 : 30.0 : 23.0 : 21.0 : 21.0 : 19.0 : 18.0 : 18.0 : 16.0 : 22.0; relative width of each segment from 1 to 11: 10.5 : 7.0 : 6.5 : 6.0 : 5.5 : 6.0 : 5.5 : 5.5 : 6.0 :6.5 : 7.0.
Pronotum convex, oval, longer than wide (length/width = 1.19), narrower (pronotum/head = 0.88) and shorter (pronotum/head = 0.98) than head; prosternum with strong longitudinal median carina, which disappears behind anterior margin. Elytra slightly shorter than wide (length/width = 0.97), distinctly shorter (elytra/pronotum = 0.80) and slightly narrower (elytra/pronotum = 0.97) than pronotum.
Abdomen elongate, tergites without any microsculpture; densely and coarsely punctate. Seventh sternite (
Details of
The present new species is similar in appearance to
The species is named in honor of Mr. Guanghong Cao of Nabanhe Nature Reserve, who helped us a lot during field work.
Map showing the collecting sites of the
1 | Body length less than 4.5 mm; posterior margin of male 7th sternite not emarginate | |
– | Body length at least 5.0 mm; posterior margin of male 7th sternite emarginate | 2 |
2 | Male 8th sternite with short protrusion in middle, median lobe of aedeagus bi-lobed in dorsal view | |
– | Male 8th sternite without protrusion in middle, median lobe of aedeagus not bi-lobed in dorsal view | 3 |
3 | Median lobe of aedeagus tri-lobed in dorsal view | |
– | Median lobe of aedeagus not tri-lobed in dorsal view | 4 |
4 | Dorso-lateral apophyses of aedeagus extending beyond apex of median lobe | 5 |
– | Dorso-lateral apophyses of aedeagus not extending to apex of median lobe | 9 |
5 | Dorso-lateral apophyses of aedeagus dilated in apical part and markedly curved ventrad in apical half | |
– | Dorso-lateral apophyses of aedeagus not dilated in apical part and not markedly curved ventrad in apical half | 6 |
6 | Median lobe of aedeagus subtriangular in apical third and curved dorsad near apex in lateral view, dorso-lateral apophyses curved ventrad near apex in lateral view | |
– | Median lobe of aedeagus not subtriangular in posterior third, not curved dorsad near apex in lateral view, dorso-lateral apophyses nearly straight in lateral view | 7 |
7 | Dorso-lateral apophyses of aedeagus dilated at middle; median lobe of aedeagus without wing-shaped process | |
– | Dorso-lateral apophyses of aedeagus not dilated at middle; median lobe of aedeagus with a wing-shaped process on each side near middle | 8 |
8 | Postocular part less than twice as long as eye length; depth of excision of posterior margin of male 8th sternite more than twice its width | |
– | Postocular part more than twice as long as eye length; depth of excision of posterior margin of male 8th sternite nearly the same its width | |
9 | Median lobe of aedeagus semicircularly emarginate at apex | |
– | Median lobe of aedeagus not emarginate at apex | 10 |
10 | Median lobe of aedeagus tongue-shaped; dorso-lateral apophyses of aedeagus very narrow and near straight in dorsal view | |
– | Median lobe of aedeagus not tongue-shaped, distinctly narrowed in apical 1/4 in dorsal view; dorso-lateral apophyses of aedeagus markedly curved inward in dorsal view |
We thank Mr. Guanghong Cao and Mr. Maoxing Tian (Nabanhe Nature Reserve) for their help during field work. We thank Dr. Liang Tang and Mr. Ziwei Yin (Shanghai Normal University) for their collecting the specimens and continuous help in many ways. We thank Dr. Ales Smetana (Agriculture and Agri-Food Canada) for revision our paper. This study is supported by the National Natural Science Foundation of China (No. 30870323) and by Shanghai Normal University (No. SK200833 and SK200834).