Mogannia ruiliensis, Chen, Xiao, Yang, Mingsheng & Wei, Cong, 2012

Chen, Xiao, Yang, Mingsheng & Wei, Cong, 2012, Review of the cicada genus Mogannia Amyot & Serville from China, with descriptions of three new species (Hemiptera: Cicadidae), Zootaxa 3568, pp. 1-35 : 27-29

Mogannia ruiliensis sp. n.

Figures 19–21

Type material. Holotype: 3 ( NWAFU), China: Yunnan Prov., Ruili, 26–VI–1979, Yang Chengzhao.

Description (male). Head ( Fig. 19 A–B) light green, triangular, clearly shorter than pronotum, slightly shorter than base of mesonotum in dorsal view; postclypeus protruding anteriorly, shorter than vertex in dorsal view; apex of vertex with tuft of hairs; compound eye fuscous; ocellus orange. Distance between lateral ocellus and corresponding eye slightly shorter than distance between lateral ocelli. Antenna mostly yellowish green. Face yellowish brown; gena and lorum with tuft of ochraceous hairs; rostrum brown, extending to apex of mid coxae.

Pronotum ( Fig. 20 B) green; nearly trapezoid in dorsal view, wider than head, symmetrically with four oblique fissures in addition to several transverse carinae; anterolateral margin not dentate. lateral angle of pronotal collar well developed. Mesonotum ( Fig. 20 B) green, somewhat tinged with dark brown medially; slightly narrower than pronotal collar, with short longitudinal black fasciae. Cruciform elevation green. Ventral surface of thorax yellowish green, without distinct marks.

Legs ( Fig. 20 E) mostly light green; fore leg tinged with brown; fore femur with primary spine prostrate, nearly lying flat; secondary and subapical spines erect, sharp and short; mid and hind coxa, trochanter and femur mostly yellowish brown; mid and hind tibia and tarsus light green.

Wings ( Fig. 19 A–B) hyaline, without infuscation; veins in basal half of fore wing green and fuscous apically; basal membrane of fore wing and base of hind wing red.

Abdomen ( Figs. 19 A–B) cylindrical, green, longer than distance from head to cruciform elevation, without distinct marks. Timbal cover ( Fig. 20 D) green, small and triangular, with apex rounded. Timbal ( Fig. 20 D) largely exposed, with ten ribs and nine accessory inter-ribs; caudal six ribs fused at base. Ventral surface of abdomen yellowish brown. Operculum ( Fig. 20 A) light green, short, falcate; opercula widely separated from each other.

Genitalia ( Fig. 21 A–D). Pygofer barrel-shaped in ventral view; dorsal beak long, slightly protruding upwards in lateral view; distal shoulder broadly rounded; basal lobe of pygofer undeveloped; upper lobe of pygofer very short and rounded. Clasper in ventral view with median clasper process fairly broadened basally and narrowed apically, with apex acute and curved laterally; lateral clasper lobe roundly developed. Aedeagus in lateral view with apex expended subapically; seven short to long spine-like processes apically and subapically, with the apical one remarkably elongated and curved downwards subapically in ventral view. Lobe-like process at both sides of base of aedeagus absent. Sternite VIII ( Fig. 17 A) with posterior margin broadly rounded.

Measurement (13) (in mm): Length of body: 14.0; length of fore wing: 21.5; width of fore wing: 6.0; width of head including eyes: 4.5; width of pronotum (including pronotal collar): 7.0; width of mesonotum: 6.5.

Biology. Unknown.

Distribution: China (Yunnan Prov.).

Etymology. The specific name is after the locality of the holotype.

Remarks. This new species was incorrectly identified as M. hebes (Walker) in the collection of NWAFU. It is similar to M. viridis Signoret in the morphology of male genitalia of the less distinct upper pygofer lobe which is probably a plesiomorphic characteristic (Duffels, person. commun., 2011), as is different to most other species of Mogannia . This species can be distinguished from other species of Mogannia by the following characteristics: the very short upper pygofer lobe (except for M. viridis ), the shape of claspers, the number of timbal ribs and intercalary ribs (ten ribs and nine intercalary ribs), aedeagus with seven short to long spine-like processes apically and subapically (especially the remarkably elongated apical process). In addition, it can be distinguished from all other species of Mogannia by the absence of the prominent lobe-like process at both sides of aedeagus except for Shaoshia Wei, Ahmed & Rizvi. Unfortunately , only the holotype of this new species, collected in 1979, is available, even though we have been to the type locality (Ruili, Yunnan Prov., China) several times since 2007, and visited other institutes searching for more material.

Figures

FIGURE 17. Mogannia tumdactylina sp. n., male. A. head and thorax, dorsal view; B. face; C. thorax and anterior part of abdomen, ventral view; D. timbal and timbal cover, dorsal view; E. left fore leg, showing the spines on fore femur.

FIGURE 19. Mogannia ruiliensis sp. n., male. A. habitus, dorsal view; B. habitus, ventral view.

FIGURE 20. Mogannia ruiliensis sp. n., male. A. thorax and anterior part of abdomen, ventral view; B. head and thorax, dorsal view; C. face; D. timbal and timbal cover, dorsal view; E. left fore leg, showing the spines on fore femur.

FIGURE 21. Mogannia ruiliensis sp. n., male. A, C. male genitalia, left lateral view; B, D. male genitalia, ventral view.