Macrosemia fengi Wang, 2024

Wang, Cheng-Bin, 2024, Macrosemia fengi Wang sp. nov. from Yunnan and Guizhou, China (Hemiptera, Cicadidae, Cicadinae), Biodiversity Data Journal 12, pp. 115974-115974 : 115974

Macrosemia fengi Wang sp. nov.

Materials

Type status: Holotype. Occurrence: recordedBy: Yun-He Wang ; sex: male; occurrenceID: AAC314B2-C4AE-5770-8270-AB699809FF57; Location : country: China; stateProvince: Yunnan; verbatimLocality: Xishuangbanna Prefecture , Menghai County, Mengsong Township , Da'an Village [大安村]; Event : verbatimEventDate: 22.IX.2022; Record Level: collectionID: WCBA00170; institutionCode: MYNU Type status: Paratype. Occurrence: recordedBy: Yun-He Wang ; sex: 1 male; occurrenceID: 68B72A41-13B7-517F-A16A-1422815F564A; Location : country: China; stateProvince: Yunnan; verbatimLocality: Xishuangbanna Prefecture , Menghai County, Mengsong Township , Da'an Village [大安村]; Event : verbatimEventDate: 22.IX.2022; Record Level : collectionID: WCBA00171; collectionCode: cLFW Type status: Paratype. Occurrence: recordedBy: Yun-He Wang ; sex: 1 female; occurrenceID: D19FC1B1-64C6-585A-9858-102421689510; Location : country: China; stateProvince: Yunnan; verbatimLocality: Xishuangbanna Prefecture , Menghai County, Mengsong Township , Da'an Village [大安村]; Event : verbatimEventDate: 22.IX.2022; Record Level : collectionID: WCBA00172; collectionCode: cLFW Type status: Paratype. Occurrence: recordedBy: Wei Li; sex: 1 male; occurrenceID: 6D7CB34C-CB21-5C4D-8F54-6D0DDC8EB153; Location : country: China; stateProvince: Guizhou; verbatimLocality: Guiyang City , Wudang District , Xinbao Township , Xiangzhigou Scenic Area [香纸沟风景区]; Event : verbatimEventDate: 22.X.2022; Record Level : collectionID: WCBA00173; institutionCode: MYNU Type status: Paratype. Occurrence: recordedBy: Wei Li; sex: 1 female; occurrenceID: 54A6D4CE-C8F7-5556-BCBA-410DEBCADF16; Location : country: China; stateProvince: Guizhou; verbatimLocality: Guiyang City , Wudang District , Xinbao Township , Xiangzhigou Scenic Area [香纸沟风景区]; Event : verbatimEventDate: 22.X.2022; Record Level : collectionID: WCBA00174; institutionCode: MYNU Type status: Paratype. Occurrence: recordedBy: Wei Li; sex: 1 male; occurrenceID: 4B5F3DEA-6481-510A-9BF6-3099B51F3863; Location : country: China; stateProvince: Guizhou; verbatimLocality: Guiyang City , Wudang District , Xinbao Township , Xiangzhigou Scenic Area [香纸沟风景区]; Event : verbatimEventDate: 22.X.2022; Record Level : collectionID: WCBA00175; collectionCode: cLFW Type status: Paratype. Occurrence: recordedBy: Wei Li; sex: 1 female; occurrenceID: 6494093A-7E5F-56B0-9098-03415307F758; Location : country: China; stateProvince: Guizhou; verbatimLocality: Guiyang City , Wudang District , Xinbao Township , Xiangzhigou Scenic Area [香纸沟风景区]; Event : verbatimEventDate: 22.X.2022; Record Level : collectionID: WCBA00176; collectionCode: cLFW

Description

Male (Fig. 1 A and B). Measurements (n = 4) as shown in Table 1 . Ratios of different body parts: (pronotal length)/(head length) = 1.9; (mesonotal length excluding cruciform elevation)/(pronotal length) = 1.2; (abdominal length)/(head + pronotal + mesonotal length) = 0.9; (head width)/(pronotal width) = 0.9; (head width)/(mesonotal width) = 1.0; (abdominal tergite III width)/(mesonotal width) = 1.1; (forewing length)/(forewing width) = 3.4.

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. 1 E) with four spines: primary spine long, subdigitiform, with obtuse apex; secondary spine subtrianglular and rather sharp; subapical spine small and tuberculate; apical spine rather small and sharp. Meracanthi mostly brown with blackish margins.

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. 2 A-C) subcordiform, gradually narrowing posteriorly, with posterior margin rounded; surface distinctly convex ventrally; anterolateral apodemes distinct.

Male genitalia. Pygofer 5.8 mm long and 4.2 mm wide, stout, subcordiform, strongly narrowing posteriorly in ventral and dorsal views (Fig. 2 D and G); anal styles relatively large, less sclerotised, densely covered with short setae apically (Fig. 2 D-G); apical stylus lightly sclerotised, digitiform (Fig. 2 G); basal lobes less developed, inconspicuous, obliquely prostrating to side walls of pygofer (Fig. 2 D and E); upper lobes absent; distal shoulders elongately tuberculate in ventral view (Fig. 2 D) and somewhat protruded and widly rounded at apex in lateral view (Fig. 2 F). Uncus with basal part swollen and transversely oval (Fig. 2 D); claspers slender, straightly protruding posterolaterally, roundly obtuse at apices (Fig. 2 D and E) and slightly bent inwards at sharp apices in lateral view (Fig. 2 F). Aedeagus rather thin and slender, gradually tapering apically (Fig. 2 I and K); in lateral view, concave at basal third of dorsal surface and distinctly curved ventrally in apical third (Fig. 2 J).

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. 1 C and D). Measurements (n = 3) as shown in Table 2 . Ratios of different body parts: (pronotal length)/(head length) = 2.6; (mesonotal length excluding cruciform elevation)/(pronotal length) = 1.3; (abdominal length)/(head + pronotal + mesonotal length) = 1.0; (head width)/(pronotal width) = 0.8; (head width)/(mesonotal width) = 1.1; (abdominal tergite III width)/(mesonotal width) = 1.2; (forewing length)/(forewing width) = 3.2.

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. 3 B) subroundly incised at middle of posterior margin, with paired protuberances flanked incision; abdominal tergite IX with dorsal beak (Fig. 3 A and C) somewhat elongate, roundly sharp, almost as long as anal styles; ovipositor sheath (Fig. 3 A-C) blackish, extending a little beyond dorsal beak.

Diagnosis

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).

Etymology

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.

Distribution

China (Yunnan, Guizhou) (Fig. 4 ).

Figures

Figure 1. 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.

Figure 2. 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.

Figure 3. Female terminalia of Macrosemia fengi Wang sp. nov., paratype: A dorsal view; B ventral view; C lateral view. Abbreviations: as: anal styles; db: dorsal beak; stVII: sternite VII; os: ovipositor sheath.

Figure 4. Distribution map of Macrosemia fengi Wang sp. nov.