Biodiversity Data Journal :
Single Taxon Treatment
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Corresponding author: Cheng-Bin Wang (entomologist@qq.com)
Academic editor: Ilia Gjonov
Received: 19 Nov 2023 | Accepted: 27 Jan 2024 | Published: 31 Jan 2024
© 2024 Cheng-Bin Wang
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:
Wang C-B (2024) Macrosemia fengi Wang sp. nov. from Yunnan and Guizhou, China (Hemiptera, Cicadidae, Cicadinae). Biodiversity Data Journal 12: e115974. https://doi.org/10.3897/BDJ.12.e115974
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The genus Macrosemia Kato, 1925 (Hemiptera, Cicadidae, Cicadinae, Dundubiini, Dundubiina) currently includes 16 species (excluding subspecies and varieties), mainly occurring in the Oriental Region. More than half of them, 10 species, are known from China, including one new species, described in the present study.
A new species of cicada, Macrosemia fengi Wang sp. nov., is described from Yunnan and Guizhou, southwest China. Colour plates are presented to illustrate its diagnostic characters. The distribution map of the new species is also given.
cicada, Dundubiini, taxonomy, new species, morphology, distribution, Oriental Region
In the 20th century, all species belong to Macrosemia Kato, 1925 (Hemiptera, Cicadidae, Cicadinae, Dundubiini, Dundubiina) were described before 1940. After more than sixty years, in this century, the taxonomic study on Macrosemia is flourishing again. Three species were successively described by
Macrosemia is distinguishable from its allied genera, especially from Platylomia, by the following characteristics (modified from
Here, I describe and illustrate a new species under the name of Macrosemia fengi sp. nov., which is in accordance with all the above characteristics except 5, from Yunnan and Guizhou Provinces of China. Important morphological characteristics of the new species are illustrated and the known distribution is mapped.
(Alphabetically listed and modified from
Two males and one female of the new species were collected from Yunnan of China in September 2022 and a month later, two pairs of the same species were collected from Guizhou of China. After field works, the specimens were kept in a freezer (-20℃). About half a year later, the specimens were relaxed and softened in water at room temperature for 24 hours and then placed in distilled water for cleaning and dissection. To examine the male genitalia, the pygofer (containing the aedeagus), together with sternite VIII, were detached and treated with a 10% potassium hydroxide (KOH) solution at room temperature for 12 hours. They were then placed in distilled water to remove the remaining KOH and prevent any further bleaching. After examination, the body parts were mounted on a slide using Euparal Mounting Medium for future studies. Images were taken with a Canon macro photo lens MP-E 65 mm on a Canon 5DsR. Images of the same object at different focal planes were combined using Zerene Stacker 1.04 stacking software. Adobe Photoshop CS6 was used for postprocessing. The description was carried out on dry specimens. Morphological terminology follows
The type material of the new species is deposited in the following institutional and private collections:
Male (Fig.
Morphometric values (mm) for each male type of Macrosemia fengi Wang sp. nov.
Specimen ID |
WCBA00170 (♂, HT) |
WCBA00171 (♂, PT) |
WCBA00173 (♂, PT) |
WCBA00175 (♂, PT) |
Average |
body length |
43.2 |
46.5 |
42.5 |
45.3 |
44.4 |
head length |
4.0 |
4.5 |
4.0 |
4.4 |
4.2 |
pronotal length |
7.8 |
8.6 |
7.7 |
8.3 |
8.1 |
mesonotal length |
11.0 |
12.2 |
10.8 |
11.6 |
11.4 |
forewing length |
55.7 |
60.9 |
54.9 |
60.1 |
57.9 |
abdominal length |
20.4 |
21.2 |
20.0 |
21.0 |
20.7 |
head width |
15.8 |
16.2 |
15.5 |
16.1 |
15.9 |
pronotal width |
17.2 |
17.8 |
17.0 |
17.6 |
17.4 |
mesonotal width |
14.9 |
15.7 |
14.5 |
15.5 |
15.2 |
forewing width | 16.0 | 18.9 | 15.1 | 18.5 | 17.1 |
abdominal tergite III width | 16.2 | 16.6 | 16.0 | 16.5 | 16.3 |
Macrosemia fengi Wang sp. nov.: A, B habitus, holotype, ♂; C, D habitus, paratype, ♀; E fore femur, holotype, ♂. A, C dorsal views; B, D ventral views; E lateral view.
Abbreviations: asp: apical spine; psp: primary spine; sasp: subapical spine; ssp: secondary spine. Scale bar a for A–D; b for E.
Head with bottom colour brown, with following blackish markings: median fascia inverted “U”-like, enclosing three ocelli, reaching frontoclypeal suture anteriorly and basal margin of head posteriorly; two fasciae on each supra-antennal plate, one narrow and along medial margin, another one relatively wide and obliquely in posterior part; lateral fasciae large, between median fascia and eyes. Compound eyes brown. Ocelli reddish-brown. Distance between lateral ocellus and corresponding eye about 2.5 times as wide as distance between lateral ocelli. Antennae fuscous to blackish. Postclypeus a little swollen, entirely brown. Anteclypeus brown in median part and blackish laterally. Genae blackish in anterior part and brown posteriorly. Lorum almost entirely blackish. Rostrum brownish, except blackish at apex, just reaching metacoxae.
Thorax. Pronotum almost entirely brown at both pronotal disc and pronotal collar, faintly tinged fuscous in central part of pronotal disc and posterior part of pronotal collar, without markings along paramedian and lateral fissures, but particularly with paired blackish submedian spots near ambient fissure at pronotal disc. Pronotal collar with median length relatively long, about 0.4 times as long as that of pronotum disc, slightly ampliate posterolaterally; lateral margins with roundly obtuse lateral teeth at about anterior one-third, orientating posterolaterally; hind corners widely rounded; surface transversely grooved. Mesonotum brownish, tinged reddish in central part, with following blackish markings: median fascia long and slender, broadened in middle part, with apex bifurcated and reaching anterior margin of cruciform elevation; paramedian fasciae short, broadened posteriorly, along parapsidal sutures; lateral fasciae wide, “L”-like, starting from about anterior one-fifth of mesonotum, somewhat obliquely extending to anterior arms of cruciform elevation, then turned medially to enclose scutal depressions, not confluent with median fascia; marginal fasciae small and short, hardly seen from dorsal view, along posterior parts of mesonotal lateral margins. Cruciform elevation brownish, fuscous to blackish in posterior arms and apical parts of anterior arms. Wing grooves brownish. Thoracic sternites almost all brownish.
Legs bicoloured, with bottom colour brown; profemora with blackish oblique stripes; meso- and metafemora with two or three blackish spots at apices. Profemur (Fig.
Wings hyaline. Venation generally brownish in basal part and fuscous apically; R+Sc veins reddish fuscous. Forewing with 8 apical cells; ulnar cell 3 about 1.5 times as long as apical cell 5; RA2 vein with longitudinal portion about 2.9 times as long as basal portion; infuscations present on r and r-m crossveins; nodal line absent; basal cell blackish; basal membrane greyish-brown. Hind-wing with 6 apical cells; jugum and longitudinal margins of vannus greyish-brown.
Abdomen subcylindrical, gradually narrowing posteriorly; reddish fuscous on dorsum and brown on venter, with posterior margin of each tergite narrowly blackish, without distinct white pollinosity. Timbal cover scalelike, brown in lateral half and blackish in medial half, concealing timbal in dorsal view. Operculum entirely brownish, except blackish lateral margin; elongate, with margins moderately constricted in sub-basal part; apex rounded, extending to middle level of abdominal sternite VII; separated from each other a little narrower than one width of them. Abdominal tergite III 1.1 times as wide as mesonotum. Abdominal sternite VII wider than long, slightly emarginate in middle of posterior margin; sternite VIII (Fig.
Macrosemia fengi Wang sp. nov., holotype, ♂: A–C abdominal sternite VIII; D–H pygofer; I–K aedeagus. A, D ventral views; B, E ventrolateral views; C, F, J lateral views; G, I dorsal views; H, K apical views.
Abbreviations: aed: aedeagus; as: anal styles; ast: apical stylus; bl: basal lobe; ds: distal shoulder; uc: uncal clasper; un: uncus.
Male genitalia. Pygofer 5.8 mm long and 4.2 mm wide, stout, subcordiform, strongly narrowing posteriorly in ventral and dorsal views (Fig.
Variations. All male types without evident variations, except the holotype faintly tinged fuscous in central part of pronotal disc and posterior part of pronotal collar (all male paratypes without such kind of faint cloud).
Female (Fig.
Morphometric values (mm) for each female type of Macrosemia fengi Wang sp. nov.
Specimen ID |
WCBA00172 (♀, PT) |
WCBA00174 (♀, PT) |
WCBA00176 (♀, PT) |
Average |
body length |
47.8 |
45.4 |
47 |
46.7 |
head length |
3.3 |
2.8 |
3.1 |
3.1 |
pronotal length |
8.3 |
7.8 |
8.2 |
8.1 |
mesonotal length |
12.7 |
12.2 |
12.6 |
12.5 |
forewing length |
63.4 |
60.6 |
62.1 |
62.0 |
abdominal length |
23.5 |
22.6 |
23.1 |
23.1 |
head width |
16.2 |
15.6 |
15.9 |
15.9 |
pronotal width |
19.0 |
18.4 |
18.8 |
18.7 |
mesonotal width |
14.7 | 14.2 | 14.3 | 14.4 |
forewing width | 20.1 | 18.7 | 19.7 | 19.5 |
abdominal tergite III width | 17.8 | 17.3 | 17.6 | 17.6 |
Rostrum extending slightly beyond posterior margin of abdominal sternite II; abdomen subconical, strongly converging apically; operculum short, slightly emarginate sublaterally at posterior margin, extending slightly beyond posterior margin of abdominal sternite II and separated from each other a little more than 1.5 times of one width of them; abdominal tergite III 1.2 times as wide as mesonotum; abdominal sternite VII (Fig.
Macrosemia fengi Wang sp. nov. is easily distinguished from other members in this genus by the combination of the following characters: pronotum almost entirely brown, only particularly with paired blackish submedian spots near ambient fissure at pronotal disc (other congeners (except M. perakana) have more complex markings on pronotum, at least with a distinct pair of blackish submedian fasciae); forewing with infuscations only present on r and r-m crossveins, while absent on apices of longitudinal veins of apical cells (same as in M. beaudouini, M. divergens, M. juno and M. tonkiniana) (M. anhweiensis and M. kiangsuensis have forewings with infuscations present on r and r-m crossveins, as well as on apices of longitudinal veins of apical cells) (M. assamensis, M. kareisana, M. khuanae, M. lamdongensis, M. matsumurai, M. perakana, M. sapaensis, M. saturata, M. suavicolor and M. umbrata have forewings with infuscations present on r, r-m, m and m-cu crossveins, as well as on apices of longitudinal veins of apical cells); uncal claspers slender, straightly protruding posterolaterally, roundly obtuse at apices and slightly bent inwards at sharp apices in lateral view (M. beaudouini, M. divergens, M. juno and M. tonkiniana have quite broad uncal claspers).
The new species is dedicated to Mr. Lei Feng (Weifang, China), a Chinese amateur obsessing with cicadas, for his help to my taxonomic study on Cicadidae. The name is a noun in the genitive case. “冯氏大马蝉” is proposed for the Chinese common name of this new species.
I am indebted to Lei Feng (Weifang, China) for providing the specimens of the new species. The author appreciates some scholar-tyrants of Chinese entomologists or taxonomists, letting him like studying more and more, to destroy their monopoly and arrogance. I would like to express my sincere gratitude to Michel Boulard (Villeneuve-la-Comtesse, France), Chang-Chin Chen (Tianjin, China), Gui-Qiang Huang (Liupanshui Normal University, Liupanshui, China), Jin-Yuan Jiang (Wuxi, China), Lu Qiu (MYNU) and Ling-Tao Zhang (Nagoya University, Nagoya, Japan) for their considerable help in my study. I thank Masami Hayashi (Kyushu University Museum, Fukuoka, Japan), Allen F. Sanborn (Barry University, Miami Shores, USA) and Paula C. Simões (Universidade de Lisboa, Lisbon, Portugal) for their constructive comments on earlier versions of the manuscript. This study was financially supported by the Natural Science Foundation of Huaguoshan (花果山自然科学基金NSFH-2023).