Research Article |
Corresponding author: Xiang-Sheng Chen ( chenxs3218@163.com ) Academic editor: Mike Wilson
© 2018 Yan-Li Zheng, Lin Yang, Xiang-Sheng Chen, Xu-Qiang Luo.
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:
Zheng Y-L, Yang L, Chen X-S, Luo X-Q (2018) Two new species of the genus Miasa Distant, 1906 from China, with a key to all species (Hemiptera, Fulgoromorpha, Dictyopharidae). ZooKeys 754: 23-32. https://doi.org/10.3897/zookeys.754.23525
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Two new species Miasa dichotoma Zheng & Chen, sp. n. and M. trifoliusa Zheng & Chen, sp. n. from China are described and illustrated. A key of identification to all species of the genus is provided.
Fulgoroidea , Oriental region, planthopper, taxonomyt. Text.
The Oriental genus Miasa was established by
The morphological terminology and measurements follow
The following abbreviations are used in the text:
BL body length (from apex of cephalic process to tip of fore wings);
HL head length (from apex of cephalic process to base of eyes);
HW head width (including eyes);
FWL forewing length.
Miasa
Distant, 1906: 247;
Putalamorpha
Bierman, 1910: 9. Type species. Stenocranus productus Lethierry, 1888 by original designation. Synonymised by
Elidiptera smaragdilinea Walker, 1857.
For the relationships and diagnosis of Miasa see
Burma; Indonesia (Borneo, Jawa, Sumatra); Malaysia (Borneo, Sabah, Sarawak, peninsula); China (Yunnan); Thailand; Vietnam; Singapore; Myanmar (ex Burma).
(Modified from
1 | Frons below eyes including median carina uniformly dull ochreous; pronotum with posterolateral corner pale yellow to ochreous with or without dark spot behind eye; forewings posterior margin broadly dull ochreous; aedeagus with two pairs of ventral lobes and a pair of dorsolateral lobes | 2 |
– | Frons below eyes emerald green, with median carina testaceous or if uniformly dull ochreous medial carina darker; pronotum with lateroventral corner brown, without dark spot behind eye; forewings with inner margin of clavus narrowly dark brown; aedeagus with two pairs of ventral lobes, but without dorsolateral lobes; southern Malay Peninsula, Sumatra and Java | M. smaragdilinea (Walker) |
2 | Male segment X broad basally, not hatchet-shaped in lateral view | 5 |
– | Male segment X narrow basally, hatchet-shaped in lateral view | 3 |
3 | Aedeagus with membranous phallobase bearing two pair of lobes, a pair of dorsal, a pair of complicated ventral lateral lobes (Fig. |
M. dichotoma Zheng & Chen, sp. n. |
– | Aedeagus with membranous phallobase bearing three pairs lobes (Fig. |
4 |
4 | Phallobase membranous with a pair of dorsal lobes directed posteriorly, and two pairs of ventral lobes: upper pair large and elongate, directed dorsally; lower pair relatively small and rounded; southwestern China, southeast Asia to North Malay Peninsula | M. wallacei Muir |
– | Phallobase membranous with a pair of dorsal lobes directed posteriorly, and two pairs of ventral lobes (Fig. |
M. trifoliusa Zheng & Chen, sp. n. |
5 | Preocular field with a blackish brown spot; male segment X with ventral margin weakly incurved in lateral view | 6 |
– | Preocular field without blackish brown spot; male segment X with ventral margin distinctly incurved sub-basally in lateral view; Borneo | M. borneensis Song, Webb & Liang |
6 | Upper process of gonostyle distinctly broad at apex; basal ventral lobes of aedeagus distinctly short and small; male segment X with apical ventral margin distinctly produced in a long process in lateral view; Borneo | M. nigromaculata Song, Webb & Liang |
– | Upper process of gonostyle not broad at apex; basal ventral lobes of aedeagus distinctly long; male segment X with ventral margin not protruded in lateral view; Sumatra and Java | M. producta (Lethierry) |
♂, BL: 14.8–15.1 mm; HL: 2.0–2.3 mm; HW: 0.8–0.9 mm; FWL: 11.1–11.3 mm. ♀, BL: 15.6 mm; HL: 2.6 mm; HW: 1.0 mm; FWL: 11.5 mm.
General colour in dried specimens ferruginous-brown, marked with pale green and black. Cephalic process of the base brown, terminal black, brown on side. Frons uniformity brown. Frontoclypeal area dark with brown freckles. Compound eyes dark brown; ocelli light pink. Antennae brown. Pronotum and mesonotum brown, the median area emerald green. Forewings with stigmal area and posterior margin broadly dull ochreous, a large oblique triangular apical streak, and a narrow streak along nodal line fuscous; hind wings with an apical fuscous spot. Legs brown with dark spots.
Cephalic (Figs
Male genitalia. Pygofer (Figs
Miasa dichotoma sp. n.: 1 male, holotype, dorsal view 2 male, oblique side view 3 male, lateral view 4 female, dorsal view, spoiled 5 male, head and thorax, dorsal view 6 male, frons and clypeus, ventral view 7 male, head and pronotum, lateral view 8 male, forewing 9 male, hind wing 10 genitalia, lateral view 11 pygofer and parameres, ventral view 12 pygofer and anal tube, dorsal view 13 aedeagus, lateral view 14 aedeagus, ventral view 15 aedeagus, dorsal view. Scale bars: 2 mm (1–9), 0.5 mm (10–15).
Female genitalia. Segment X (Fig.
Holotype ♂, China, Yunnan, Xishuangbanna, Mengla, 23.VIII.2013, Guo Mei-Na. Paratypes, 1♀, same data as Holotype; 1♂, China, Yunnan, Xishuangbanna, Menglun, 30.VII.2012, Zheng Wei-Bin.
China (Yunnan).
This species is similar to M. trifoliusa sp. n. but can be distinguished from phallobase. The former has two pairs of membranous lobes of the phallobase at apex, the latter with three pairs of membranous lobes at apex.
This new species is named for the Greek word “dichotoma” referring to aedeagus that is dichotomous at its apex.
♂, BL: 14.2 mm; HL: 1.8 mm; HW: 0.4 mm; FWL: 10.7 mm.
General colour in dried specimens ferruginous-brown, marked with faint yellow and reddish brown. Cephalic process of the base brown, terminal black, brown on side. Frons brown with faint yellow marks. Frontoclypeal dark with paired brown blotchy markings. Compound eyes dark brown, ocelli light pink. Antennae brown. Pronotum and mesonotum brown, the middle faint yellow. Forewings with stigmal area and posterior margin broadly dull ochreous, a large oblique triangular apical streak, and a narrow streak along nodal line fuscous; hind wings with an apical fuscous spot. Legs brown with dark spot.
Cephalic (Figs
Male genitalia. Pygofer (Figs
Miasa trifoliusa Zheng & Chen, sp. n.: 21 male, holotype, dorsal view 22 male, lateral view 23 male, oblique side view 24 male, head and thorax, dorsal view 25 male, head and pronotum, lateral view 26 male, frons and clypeus, ventral view 27 genitalia, lateral view 28 pygofer and parameres, ventral view 29 pygofer and anal tube, dorsal view 30 aedeagus, lateral view 31 aedeagus, ventral view 32 aedeagus, dorsal view. Scale bars: 2 mm (21–26), 0.5 mm (27–32).
Holotype ♂, China, Yunnan, Xishuangbanna Menglun. 18.VIII.2014, Wang Ying-Jian.
China (Yunnan).
This species is similar to M. wallacei Muir, but can be distinguished most easily by the phallobase conformation. The former is membranous with a pair of dorsal lobes directed posteriorly, and two pairs of ventral lobes: large, almost equal in length, apically bifurcate, directed dorsally, the latter membranous with a pair of dorsal lobes directed posteriorly, and two pairs of ventral lobes: upper pair large and elongate, directed dorsally; lower pair relatively small and rounded. There have differences in body colour and in the lengths and widths of the forewings, but the differences are not obvious.
This new species is named with the Greek word “trifoliusa” referring to phallobase with three pairs of membranous lobes at apex.
The discovery of these two new species broadens our knowledge of the morphology and biogeography of the genus, although it is not a new record of the genus for China. The two new species occur in Yunnan, China (as does M. wallacei). This might be related with the special geographical position and climate of Yunnan.Tto the northwest lies Lancang County; to the southeast, south, and southwest respectively there are borders with Laos, Burma, and Vietnam. These regions and countries are linked by mountains and rivers and are located on the Tropic of Cancer in tropical humid areas.
This work was supported by the Program of Science and Technology Innovation Talents Team, Guizhou Province (No. 20144001), the Program of Excellent Innovation Talents, Guizhou Province (No. 20154021), the Special Foundation for Excellent Young Scientist of Guizhou Province (No. [2015]21), the National Natural Science Foundation of China (No. 31472033, 41563007), Scientific research fund project of Guizhou Education University (2015BS012), and the International Science and Technology Cooperation Program of Guizhou (20165802).