Research Article |
Corresponding author: Zhiqi Liu ( zhiqiliu@cau.edu.cn ) Academic editor: Shaun Winterton
© 2015 Yang Zhao, Bingzhen Yan, Zhiqi Liu.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Zhao Y, Yan B, Liu Z (2015) A new species of the brown lacewing genus Zachobiella Banks from China (Neuroptera, Hemerobiidae) with a key to species. ZooKeys 502: 27-37. https://doi.org/10.3897/zookeys.502.9251
|
The genus Zachobiella Banks, 1920 is reviewed and a new species Zachobiella yunanica sp. n. described from China. All species found in China are redescribed, and Zachobiella submarginata Esben-Petersen, 1929 is recorded from China for the first time. A key to the adults of Zachobiella is provided.
Notiobiellinae, Zachobiella, China
The genus Zachobiella was erected by
In this paper, all the known species of genus Zachobiella in China are redescribed and illustrated, including detailed descriptions and illustrations of the new species Zachobiella yunanica sp. n.; Zachobiella submarginata Esben-Petersen is recorded from China for the first time. In addition, a key for identification of adults is also presented. All specimens are deposited in the Entomological Museum of China Agricultural University (CAU), Beijing.
Specimens were examined under an Optec SZ760 stereomicroscope. Images of wings were taken with a Nikon EOS D3200 digital camera attached to the stereomicroscope. The terminalia were observed under a Leica DM2500 compound microscope. Descriptions of colouration are based on observations under the stereomicroscope with direct light on specimens preserved in 75% ethyl alcohol. The abdominal apex with genitalia was cut off and heated in 10% sodium hydroxide for about 10–20 min and then transferred to an excavated slide with glycerin. After examination it was transferred to fresh 75% ethyl alcohol and stored in a microvial.
Wing venation terminology follows
Abbreviations: 7s 7th sternite; 8s 8th sternite; 9s 9th sternite; 7t 7th tergite; 8t 8th tergite; 9t 9th tergite; ect ectoproct; ehgs extrahemigonarcus; hgs hemigonarcus; ihgs intrahemigonarcus; med mediuncus; orb# oblique radial branch of anterior radial trace (= radial sector).
1 | Small triangular dark spots present at the forks of longitudinal veins in forewing | 2 |
– | Small triangular dark spots absent at the forks of longitudinal veins in forewing | 6 |
2 | Only one crossvein present in hind wing | 3 |
– | Two crossveins present in hind wing | 5 |
3 | 3ir1 located before the fork of orb2 in forewing | Z. submarginata Esben-Petersen |
– | 3ir1 located after the fork of orb2 in forewing | 4 |
4 | Two gradate series present in forewing; male genitalia with both posterodorsal and posteroventral edges of ectoproct extending upwards into long arms | Z. yunanica sp. n. |
– | Three gradate series present in forewing; male genitalia with only posteroventral edge of ectoproct extending upwards into long arm | Z. lobata New |
5 | Rs forked at the base in hind wing | Z. punctata Banks |
– | Rs forked in the middle in hind wing | Z. marmorata Navás |
6 | 3ir1 located before the fork of orb2 in forewing | 7 |
– | 3ir1 located after the fork of orb2 in forewing | 8 |
7 | Approximately 12 segments of distal flagellum obviously darker than the others in antennae; obvious brown stripes present in forewing | Z. striata Nakahara |
– | Basal half of antennae obviously darker than the others; obvious brown stripes absent in forewing | Z. jacobsoni Esben-Petersen |
8 | Two crossveins present in hind wing; pronotum brown while paler on sides | Z. pallida Banks |
– | Only one crossvein present in hind wing; pronotum yellowish-brown while brown longitudinal stripes present along both sides | Z. hainanensis Banks |
Triangular dark spots present at the forks of longitudinal veins in forewing and 3ir1 present after the fork of orb2. Male: posterodorsal edge of 7th tergite slightly extending backwards; a pair of rough spiny projections present on the dorsal surface of the 8th tergite; posteroventral edge of the 9th tergite extending upwards with serrated inner margin from one third distally; both posterodorsal and posteroventral edges of ectoproct extending upwards into long arms, especially the posteroventral.
Forewing length 5.4–6.0 mm, width 2.1–2.2 mm. Hind wing length 4.4–4.7 mm, width 1.7–1.9 mm. Body length 4.0–5.3 mm.
Head. Yellowish-brown. Brown stripe present from the rear of eye to the mandible. Labial and maxillary palpi brown. Antenna light brown, more than fifty segments. Eyes black with a metallic luster.
Thorax. Yellowish-brown, with brown longitudinal stripes along both sides of tergites. Legs yellowish-brown with no spots.
Wings (Fig.
Abdomen. Yellowish-brown. Pilose. Male terminalia (Fig.
China (Yunnan).
CHINA: Holotype, 1♂, Yunnan province, Ruili city, Mengxiu county, Gaoerxing. 4.v.1981, Chikun Yang (CAU). Paratypes, 1♂, Yunnan province, Ruili city, Mengxiu county, Gaoerxing. 5.v.1981, Chikun Yang (CAU); 1♀, Yunnan province, Ruili city, Mengxiu county, Gaoerxing. 2.v.1981, Chikun Yang (CAU).
The specific name refers to the type locality where this species is found.
This new species is closely related to Z. lobata New, 1988, Z. punctata Banks, 1920, and Z. submarginata Esben-Petersen, 1929 based on the small triangular dark spots present at the forks of longitudinal veins in forewing. It can be distinguished from Z. submarginata by 3ir1 present after the fork of orb2 in forewing while in Z. submarginata it present before the fork of orb2. It also can be easily distinguished from Z. punctata by having only one crossvein of gradate series in hind wing while in Z. punctata there are two crossveins. In this new species two gradate series are present in the forewing and both the posterodorsal edge and the posteroventral edge of the ectoproct extend upwards into long arms. In Z. lobata three gradate series are present in the forewing and only the posteroventral edge of the ectoproct extends upwards.
Zachobiella submarginata Esben-Petersen, 1929: 33.
Triangular dark spots present at the forks of longitudinal veins in forewing and 3ir1 present before the fork of orb2; Rs forked at the base in hind wing. Female: hind margin of 9th tergite depressed forwards from lateral view and the hind margin of ventral part exceeding the posterior of ectoproct.
Forewing length 5.5–5.9 mm, width 1.9–2.2 mm. Hind wing length 4.0–4.8 mm, width 1.5–1.8 mm. Body length 4.2–5.0 mm.
Head. Yellowish-brown. Brown stripe present from the rear of eye to the mandible. Labial and maxillary palpi brown. Antenna light brown, more than fifty-five segments. Eyes black with a metallic luster.
Thorax. Yellowish-brown, with brown longitudinal stripes along both sides of tergite. Legs yellowish-brown without spots.
Wings (Fig.
Abdomen. Yellowish-brown. Hairy. Female terminalia (Fig.
China (Yunnan, Guangxi)
CHINA: 3♀, Yunnan province, Ruili city, Mengxiu county. 2.v.1981, Chikun Yang (CAU); 4♀, Yunnan province, Ruili city, Mengxiu county, Gaoerxing. 4.v.1981, Chikun Yang (CAU); 1♀, Yunnan province, Ruili city, Mengxiu county, Gaoerxing. 4.v.1981, Fasheng Li (CAU); 1♀, Yunnan province, Puer city, Lancang county. 20.iv.1981, Chikun Yang (CAU); 1♀, Guangxi province, Yulin city, Bobai county, Langping. 28.v.1982, Chikun Yang (CAU).
This species was described by
Zachobiella striata Nakahara, 1966: 198.
Forewing pale yellow and hyaline, thin brown stripe present along the gradate series and from the middle of MA to the lateral margin, an oval brown spot present at the margin, triangular dark spots absent at the forks of longitudinal veins and 3ir1 present before the fork of orb2. Female: 9th tergite approximate ‘L’ -shaped from lateral view, anteroventral edge protruding forwards slightly.
Forewing length 4.5–5.7 mm, width 1.5–1.8 mm. Hind wing length 3.6–4.6 mm, width 1.2–1.5 mm. Body length 3.2–5.7 mm.
Head. Yellowish-brown, without any dark areas. Antenna more than sixty segments, most segments amber but over a dozen of segments of distal flagellum obviously darker than the others. Eyes black with a metallic luster. Mandibles brown.
Thorax. Yellowish-brown, with a light-coloured longitudinal stripe throughout. Legs yellowish-brown without spots; distal tarsomere darker than proximal four.
Wings (Fig.
Abdomen. Yellowish-brown, tergites and sternites brown, darker than the arthropleuron. Hairy. Female terminalia (Fig.
China (Taiwan, Hainan, Yunnan)
CHINA: 2♀, Yunnan province, Dehong Autonomous Prefecture, Longchuan county. 5.v.1981, Chikun Yang (CAU); 1♀, Yunnan province, Hani-Yi Autonomous Prefecture of Honghe, Hekou town. 12.v.2011, Luxi Liu (CAU); 1♀, Hainan province, Wuzhishan city, Wuzhi hills. 16.v.2007, Yongjie Wang (CAU); 1♀, Taiwan province, Nantou city, Nantou County Council. 6.vii.2013, Xinyu Luo (CAU).
This species was described by
Zachobiella hainanensis Banks, 1939: 467.
Forewing pale yellow and hyaline, brown stripes present along the gradate series and from the middle of MA to the lateral margin, triangular dark spots absent at the forks of longitudinal veins and 3ir1 present after the fork of orb2. Male: dorsal surface of 8th tergite protruding upwards as a short rod; dorsal of 9th tergite slightly depressed and posteroventral edge extending upwards as a strong spine; dorsal of ectoproct obviously protruding upwards, posteroventral edge extending upwards into a thickened process. Female: 9th tergite very small, triangular from lateral view; ectoproct large, slightly depressed in the middle of the hind margin.
Forewing length 3.2–4.9 mm, width 1.2–1.4 mm. Hind wing length 3.5–4.2 mm, width 1.1–1.3 mm. Body length 2.8–4.3 mm.
Head. Yellowish-brown, without any dark areas. Antenna amber, more than fifty-five segments, more than a dozen of segments of distal flagellum obviously paler than the others. Eyes black with a metallic luster.
Thorax. Yellowish-brown. Brown longitudinal stripes present along both sides of the pronotum; scutum of mesonotum and metanotum obviously brown. Legs yellowish-brown with no spots.
Wings (Fig.
Abdomen. Yellowish-brown, tergites and sternites brown, darker than the arthropleuron, pilose. Male terminalia (Fig.
China (Hainan, Yunnan)
CHINA: 2♂2♀, Yunnan province, Dehong Autonomous Prefecture, Longchuan county. 28.iv.1981, Chikun Yang (CAU); 1♂, Yunnan province, Dehong Autonomous Prefecture, Ruili county. 1.v.1981, Fasheng Li (CAU); 1♂1♀, Hainan province, Wuzhishan city, Wuzhi hills. 16.v.2007, Yongjie Wang (CAU); 1♂, Hainan province, Baisha county, Yuanmen country, Hongxing village. 10.ix.2008, Xiushuai Yang (CAU).
This species was described by
We are very grateful to the relevant people for collecting the specimens. This research has been supported by the National Natural Science Foundation of China (Project No. 31272352) and the Foundation of the Ministry of Agriculture of China (Project No. 201103022).