Mogannia tumdactylina, 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 : 24-27

Mogannia tumdactylina sp. n.

Figures 16–18

Type material. Holotype: 3 ( NWAFU), China: Hunan Prov., Yongzhou, 24–V–1981, coll. Ou Yangfen. Paratypes: 13 ( NWAFU), China: Hunan Prov.,?–?–1965 (the detailed collecting date of this specimen is not noted on the original label); 23 ( GXNU), Guangxi Prov., Tongren, 23-VI-1988, coll. Huang Huayong.

Description (male). Head ( Fig. 16 A–B) black, triangular in dorsal view, with golden hairs, as long as pronotum and as wide as base of mesonotum; postclypeus protruding anteriorly, as long as vertex in dorsal view; compound eye dark brown; ocellus ochraceous. Distance between lateral ocellus and corresponding eye as long as distance between lateral ocelli. Face black; gena and lorum with tuft of golden hairs; rostrum brown, extending to apex of mid coxae.

Pronotum ( Fig. 17 A) black; nearly trapezoid in dorsal view, with golden hairs, symmetrically with four oblique fissures in addition to several transeverse carinae; pronotal collar yellowish brown; anterolateral margin not dentate; lateral angle of pronotal corner well developed. Mesonotum ( Fig. 17 A) black, with golden hairs, slightly narrower than pronotal collar, without distinct marks. Cruciform elevation brown. Ventral surface of thorax brown. Legs ( Fig. 17 E) mostly brown, with golden hairs; mid tibia, hind tibia and tarsus tinted with yellow; fore femur with primary spine prostrate, nearly lying flat; secondary and subapical spines erect, sharp and short. Fore wing ( Fig. 16 A–B) with basal half with wide brown oblique fascia along node line; apical half of fore wing hyaline.

Abdomen ( Figs. 16 A–B) cylindrical, fuscous, with golden hairs on the median terga II–III and terga VI–VIII, longer than distance from head to cruciform elevation, without distinct marks. Timbal cover ( Fig. 17 D) brown, small and triangular, with apex rounded. Timbal ( Fig. 17 D) largely exposed, with eight ribs and seven intercalary ribs; caudal five ribs fused at base. Ventral surface of abdomen fuscous, with golden hairs; posterior margin of sternites III–VI yellowish ochraceous. Operculum ( Fig. 17 C) light brown, short, obliquely semicircular, not extending to anterior margin of sternite II and tympanum largely exposed; opercula very narrowly separated from each other.

Genitalia ( Fig. 18 A–D). Pygofer barrel-shaped in ventral view; dorsal beak short in lateral view with base very broad, protruding upwards; distal shoulder broadly rounded and convex submarginally, forming a distinct submargin in lateral view; basal lobe of pygofer very long, abruptly narrowed subapically, with apex acute and curved somewhat downwards in lateral view; upper lobe of pygofer in ventral view very long and stout, with apex curved inwards, apex roundly expanded and curved downwards in lateral view. Clasper in ventral view with median clasper process remarkably long, narrowed apically and curved laterally; lateral clasper lobe undeveloped.

Prominent lobe-like process at both sides of base of aedeagus short. Aedeagus with six short to long spine-like processes apically and subapically, the apical one longest and curved inwards in lateral view.

Measurements (43) (in mm). Length of body: 3 16.0–20.0; length of fore wing: 3 16.0–19.5; width of fore wing: 3 5.0–6.5; width of head including eyes: 3 4.0–4.5; width of pronotum (including pronotal collar): 3 6.0–6.5; width of mesonotum: 3 4.0–5.0.

Biology. Unknown.

Distribution. China (Guangxi Prov., Hunan Prov.).

Etymology. The specific name is derived from Latin prefix “ tum -”and Latin word “ dactylina ” which refers to the apically expanded upper lobe of pygofer.

Remarks. This new species was identified incorrectly as M. formosana in the collection of NWAFU, but can be distinguished from this and other species of Mogannia by the slender abdomen, the short but stout dorsal beak, the long basal lobe and remarkably long, incurved upper lobe of pygofer, the remarkably produced long median clasper process and the undeveloped lateral clasper lobe of male pygofer, in addition to the two following characteristics: timbal with eight ribs and seven intercalary ribs; aedeagus with six short to long spine-like processes apically and subapically.

Figures

FIGURE 16. Mogannia tumdactylina sp. n., male. A. habitus, dorsal view; B. habitus, ventral view.

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 18. Mogannia tumdactylina sp. n., male. A, C. male genitalia, left lateral view; B, D. male genitalia, ventral view.