Research Article |
Corresponding author: Yalin Zhang ( yalinzh@nwsuaf.edu.cn ) Academic editor: Mike Wilson
© 2020 Kamran Sohail, Hassan Naveed, Daozheng Qin, Yalin Zhang.
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:
Sohail K, Naveed H, Qin D, Zhang Y (2020) Taxonomic study of the genus Unkanodes (Hemiptera, Fulgoroidea, Delphacidae) from Pakistan, with description of a new species. ZooKeys 995: 1-13. https://doi.org/10.3897/zookeys.995.48766
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Unkanodes (Kwonianella) malamjabbensis sp. nov. (Hemiptera, Delphacidae) is described and illustrated and U. latespinosa (Dlabola, 1957) is newly recorded from Malamjabbah, Swat, Pakistan. These two species represent the first records of the genus Unkanodes Fennah, 1956 from Pakistan. A key to the world’s species of the genus Unkanodes is provided.
Distribution, Fulgoromorpha, key, morphology, taxonomy
The planthopper family Delphacidae currently consists of 2217 species in 427 genera (
The delphacid fauna of Pakistan has been poorly studied, with only ten species previously recorded from this country (
In this study, U. (Unkanodes) latespinosa (Dlabola, 1957) is recorded for the first time from Pakistan and a new species U. (Kwonianella) malamjabbensis sp. nov., is described.
Specimens were collected from Pakistan and deposited at the Entomological Museum of Northwest A&F University (NWAFU) Yangling, Shaanxi, China. Morphological terminology follows
Tribe Delphacini Leach, 1815
Unkanodes Fennah, 1956.
Unkanodes sapporona
(Matsumura, 1935), comb. by
Unkana sapporona Matsumura, 1935: 131, by original designation.
Relatively slender, head slightly narrower than pronotum. Vertex longer than broad, its width at base not exceeding width of an eye, shallowly rounded at apical margin; carinae of vertex and frons distinct. Frons parallel-sided, about 2.0–2.5 times as long as wide, lateral margins parallel, narrowing upwards in apical 1/3; median carina of frons bifurcates near fastigium. Lateral carinae of pronotum diverging, vanishing before reaching posterior margin. Calcar with 10–20 well-developed teeth; apical tooth separate from the remaining teeth. Posterior margin of pygofer with a cut on the sides. Segment X (anal tube) with a pair of teeth or teeth absent. Styli flattened, diverging or more or less parallel beyond middle, with complex apices, zigzag-shaped bent and wide or narrowed and slanting outwards. Armature of diaphragm (bridge of pygofer) bearing a pair of teeth directed upwards or a projection with 2 apices. Aedeagus more or less straight, or bent ventrad, elbow-shaped, slightly asymmetrical due to location of gonopore and arrangement of teeth on aedeagal shaft (after
Subgenus Unkanodes (Chilodelphax Vilbaste, 1968)
Unkanodes (Chilodelphax) silvaticus Vilbaste, 1968
Unkanodes silvaticus Vilbaste, 1968: 24.
Chilodelphax silvaticus (Vilbaste, 1968); comb. by
Unkanodes (Chilodelphax) silvaticus Vilbaste, 1968; comb. by
Subgenus Unkanodes (Unkanodes Fennah, 1956)
Unkanodes (Unkanodes) excisa (Melichar, 1898)
Liburnia excisa Melichar, 1898: 67.
Delphax excisa (Melichar, 1898); comb. by
Liburnia elymi Jensen-Haarup, 1917: 3; syn. by
Delphacodes excisa (Melichar, 1898); comb. by
Elymodelphax excisa (Melichar, 1898); comb. by
Unkanodes excisa (Melichar, 1898); comb. by implication
Unkanodes (Unkanodes) latespinosa (Dlabola, 1957)
Calligypona latespinosa Dlabola, 1957.
Unkanodes latespinosa (Dlabola, 1957), comb. apparently by
Unkanodes (Unkanodes) paramarginata (Dlabola, 1961: 275)
Unkanodes (Unkanodes) sapporona (Matsumura, 1935)
Unkana sapporona Matsumura, 1935.
Unkanodes sapporona (Matsumura, 1935), comb. by
Unkanodes (Unkanodes) tanasijevici (Dlabola, 1965)
Elymodelphax tanasijevici Dlabola, 1965.
Calligypona zeravshanica Dubovsky, 1967; syn. by
Ribautodelphax notabilis Logvinenko, 1970
Subgenus Unkanodes (Kwonianella Anufriev, 1988)
Unkanodes (Kwonianella) albifascia (Matsumura, 1900: 268)
Liburnia albifascia Matsumura, 1900: 268.
Delphax albifascia (Matsumura, 1900); comb. by Oshanin, 1907: 330.
Delphacodes albifascia (Matsumura, 1900); comb. by
Unkanodes (Chilodelphax) albifascia (Matsumura, 1900); comb. by
Chilodelphax albifascia (Matsumura, 1900); status by
Unkanodes (Kwonianella) albifascia (Matsumura, 1900); comb. by
Unkanodes (Kwonianella) insularis Anufriev, 1988
Unkanodes (Kwonianella) insularis Anufriev & Emeljanov, 1988: 409.
Unkanodes (Kwonianella) sympaticus Anufriev, 1988
Unkanodes (Kwonianella) sympaticus Anufriev & Emeljanov, 1988: 409.
This key is modified from
1 | Armature of diaphragm with a pair of teeth slanting upwards or directed back; genital style with relatively wide apices; segment X (anal tube) with large widely-spaced processes; sub genus Unkanodes (Unkanodes) | 2 |
– | Armature of diaphragm without teeth or with a tooth bifurcate at apex; genital style with narrow apices; segment X (anal tube) with or without such processes | 5 |
2 | Process of anal tube spaced more widely, weakly or strongly diverging; genital style with strong subapical lobe, apex wider | 3 |
– | Processes of anal tube spaced less widely, more or less parallel; genital style with weak subapical lobe, apex narrower ( |
U. (Unkanodes) excisus |
3 | Process of segment X widely spaced weakly diverging; apex of genital style relatively wider ( |
U. (Unkanodes) sapporona |
– | Process of segment X widely-spaced strongly diverging; apex of genital style comparatively less wider | 4 |
4 | Aedeagus elbow-shaped; process of segment X posteroventrally curved (Figs |
U. (Unkanodes) latespinosa |
– | Aedeagus straight with a strong tooth on dorsal aspect, ventrally with a weak lobe below the tooth; segment X not curved ( |
U. (Unkanodes) tanasijevici |
5 | Dorsal and posterior margin of pygofer forming an obtuse angle in lateral view; segment X (anal tube) with large widely-spaced teeth; apical half of aedeagus straight; subgenus Chilodelphax ( |
U. (Chilodelphax) silvaticus |
– | Dorsal and posterior margin of pygofer forming an acute angle in lateral view; segment X (anal tube) without or with narrowly spaced teeth; apical half of aedeagus directed dorsad ( |
6 |
6 | Process of pygofer bridge very short, directed downwards, sometimes bifurcate at apex; genital style comparatively short with wide subapical lobe | 7 |
– | Process of pygofer bridge slightly long, bifurcated and directed backwards; genital style longer with narrow subapical lobe or short with wide subapical lobe | 8 |
7 | Aedeagus near bent with a pair of long teeth perpendicular to shaft, the length of aedeagus matches with thickness of shaft ( |
U. (Kwonianella) sympatricus |
– | Aedeagus near bent without long teeth, the length of which matches with thickness of the shaft ( |
U. (Kwonianella) albifascia |
8 | Aedeagus narrowing abruptly in apical 1/3, with a lobe-like process on ventral aspect in lateral view (Fig. |
U. (Kwonianella) malamjabbensis sp. nov. |
– | Aedeagus not narrowing abruptly in apical 1/3, without a lobe on ventral aspect in lateral view ( |
U. (Kwonianella) insularis |
3♂♂ (brachypterous), 7♂♂ (macropterous) Malamjabbah, Swat-Khyber Pakhtunkhwa, Pakistan, 35°13'21.76"N, 72°25'32.93"E, 2993.39 m, 5 vii 2018, sweeping grasses, coll. Kamran Sohail. The area has a very diverse habitat for fruits and vegetables, and this species was collected in grasses near vegetable fields. This species is newly recorded for the fauna of Pakistan.
Previously recorded from Afghanistan, Iran, Mongolia, Turkey and Yugoslavia. In this study it is recorded from Swat, Khyber Pakhtunkhwa-Pakistan.
Unkanodes (Chilodelphax) latespinosa (from Pakistan) 1 adult, dorsal view (macropterous) 2 adult, same species (brachypterous) 3 adult (macropterous), lateral view 4 vertex, pronotum and mesonotum, dorsal view 5 frons, ventral view 6, 7 male genitalia, caudal and lateral views 8–10 anal segment and aedeagus, lateral, dorsal and ventral views 11 genital style, lateral view.
Length of male (n=2) 1.4–1.6 mm.
General body colour dark brown to black. Vertex pale, compartments with three distinct yellow spots. Carina on frons pale, intercarinal region dark brown, gena concolourous with intercarinal region, compound eyes greyish. Antenna yellowish slightly darker at junction of scape and pedicel. Pronotum and mesonotum medially with a white stripe; darker at adjoining areas, extreme lateral margins and median carina white, lateral carina concolourous with adjoining regions. Forewings dark brown to black, apical and anal margins pale. Legs yellowish, spines with black apices. Abdominal tergites darker, segments IX and X lighter, pygofer brown.
Head narrower than pronotum, eyes extending beyond posterior margin of vertex (Figs
In caudal view, pygofer wider than long widest at mid length, dorsolaterally nearly straight (Figs
Holotype: ♂ Malamjabbah, Swat-Khyber Pakhtunkhwa, Pakistan, 35°13'21.76"N, 72°25'32.93"E, 2993.39 m, 5 vii 2018, sweeping grasses, coll. Kamran Sohail. Paratype: 1♂, same data as holotype.
This new species was collected in a grass habitat near ponds. The Type locality is an understudied habitat for fulgoroids and the region reflects a true diversity of planthoppers for future prospects.
Unknown.
The new species is named after the type locality ‘Malamjabba’.
The new species is externally similar to U. (Kwonianella) albifascia which also has a white stripe on the thorax and median margins of the forewings. However, it can be separated by the distinctly separated process of the pygofer bridge, widely diverging in U. (Kwonianella) malamjabbensis sp. nov. but very short and bifurcate at the apex in U. (Kwonianella) albifascia (
We are sincerely thankful to Stephen W. Wilson (Professor Emeritus of Biology at University of Central Missouri Warrensburg, USA) for revising and providing comments on an early draft of this manuscript. We are also thankful to Prof. John Richard SCHROCK (Emporia State University, USA) for English revision of this manuscript and Dr. Tehseen Javed (College of Water Resources and Architecture Engineering, NWAFU) for providing the distributional map. We also extend our thanks to anonymous reviewers and the editor for their valuable suggestions and comments. This study was supported by the National Natural Science Foundation of China (31420103911) and The Ministry of Science and Technology of the People’s Republic of China (2005DKA21402).