Research Article
Print
Research Article
Revision of the genus Ficiana Ghauri and its relationship to other genera in Empoascini (Hemiptera, Cicadellidae, Typhlocybinae)
expand article infoYe Xu, Hui-feng Suo, Dao-zheng Qin
‡ Northwest A & F University, Yangling, China
Open Access

Abstract

The empoascine genus Ficiana Ghauri is reviewed based on specimens from China. One new Ficiana species, Ficiana aurantia sp. n. is described from Guangxi in south China. An identification key to all species in this genus is provided. The morphological characters of Ficiana and related genera in this tribe are discussed.

Keywords

Auchenorrhyncha , Cicadelloidea , morphology, distribution, taxonomy

Introduction

The empoascine genus Ficiana was established by Ghauri (1963) based on specimens from Coimbatore (south India) (type species: Ficiana pruthii Ghauri, 1963). It is a small genus in Empoascini and easily identified by having a median sulcus on frons, vein CuA of hind wing unbranched, ventral pygofer appendage absent, and subgenital plates fused (Ghauri 1963). This genus is confined to the Oriental region and only one species (the type species) has been reported so far.

The generic characters of Ficiana need to be revised because no additional information had been added to this genus after its establishment. In this paper, a more detailed description based on specimens from China is provided. This is the first report of this genus in the Chinese fauna. In addition, a new species of Ficiana from Guangxi in south China is described, and the interpretation of morphology resemblance and reconsider the evolutionary relationship of this genus with related genera in the tribe Empoascini is discussed.

Material and methods

The specimens used in this study are deposited in the Entomological Museum, Northwest A&F University, Yangling, Shaanxi, China (NWAFU). Male genitalia dissections were carried out as described by Oman (1949) and Knight (1965). Line diagrams were drawn using Olympus PM-10AD microscope. Photographs were taken with an automontage QImaging Retiga 4000R digital camera (CCD) stereozoom microscope. The body measurements are from apex of vertex to tip of forewing. Terminology follows Zhang (1990) with the following exceptions: wing venation follows Dworakowska (1993), groups of setae on the subgenital plate follow Southern (1982), and leg chaetotaxy follows Rakitov (1998).

Taxonomy

Ficiana Ghauri

Ficiana Ghauri, 1963: 472.

Type species

Ficiana pruthii Ghauri, 1963, by original designation.

Description

Body robust. Head including eyes broader than maximum width of pronotum in dorsal aspect (Figs 1, 3). Crown short and broad, rounded anteriorly, anterior and posterior margins subparallel, middle length shorter than width between eyes (Figs 1, 3). Coronal suture distinct, extended onto face and terminating at level of antennal bases (Figs 1, 3, 4), transition of vertex to face rounded in profile (Fig. 2). Face broad, lateral frontal sutures convergent towards base (Fig. 4). Ocelli on margin about equidistant between eye and midline (Figs 1, 3, 4). Pronotum large with sinuate transverse depression (Figs 1–3). Scutellum with median depression. Forewing narrow, apical cells occupying nearly one-third of total length, all three apical veins arise from longitudinal m cell, veins RP, MP’ confluent for short distance pre-apically, 2nd apical cell with margins almost parallel apically (Fig. 8). Hindwing with CuA unbranched (Fig. 9). Front femur with dorsoapical pair of macrosetae, AM1 enlarged and situated on ventral margin, intercalary row with one large basal setae and eight smaller setae more distal. Hind femur macrosetae 2+1+1, row AV with 11 macrosetae near apex.

Figures 1–7. 

Ficiana aurantia sp. n. 1 male adult, dorsal view 2 male adult, left lateral view 3 head and thorax, dorsal view 4 face 5 male genitalia, left lateral view 6 male genitalia, dorsal view 7 abdominal apodemes. Scale bars: 0.5 mm (1, 2); 0.2 mm (3–7).

Figures 8–18. 

Ficiana aurantia sp. n. 8 forewing 9 hind wing 10 male genitalia, left lateral view 11 pygofer side, left lateral view 12 pygofer, dorsal view 13 anal tube and anal styli, left lateral view 14 aedeagus, left lateral view 15 aedeagus, dorsal view 16 connective 17 paramere 18 subgenital plates. Scale bars: 0.5 mm (8, 9); 0.2 mm (10); 0.1 mm (11–18).

Male abdominal apodemes developed, parallel sided (Fig. 7). Pygofer short, terminally bearing rigid microsetae on each side of lobe, ventral appendage absent, dorsal bridge short (Figs 5, 6, 11, 12). Subgenital plates large and fused throughout almost in whole length except apices, A-group setae absent, B-group setae small and rigid, C-group setae sharply terminated, D-group setae not numerous (Figs 5, 6, 10, 18). Paramere short and robust, setae and sensory pits absent (Figs 5, 6, 10, 17). Connective subtrapezoidal, closely related to aedeagus (Figs 14–16). Aedeagal shaft tubular, ventro-basally produced, dorsoatrium developed (Figs 14, 15). Anal tube appendage distinct (Figs 5, 10, 13).

Remarks

The original illustrations of the type species made the male genital diagnosis of this genus hard to understand, especially the configuration of the aedeagus. Based on our additional new findings, it has a median sulcus of frons (Fig. 4); all apical veins in forewing arising from longitudinal m cell, vein CuA in hind wing unbranched (Figs 8, 9); ventral pygofer appendage absent (Figs 5, 10, 11); subgenital plates large and fused throughout almost in whole length (Fig. 18); and anal tube appendage present (Figs 5, 10, 13). All of these characters ensure the new species fit the definition of Ficiana Ghauri (1963) and it is described here.

Ghauri (1963) noted the aedeagus was “with three pairs of elaborate appendages, as shown in the figure”. However, the figures provided by Ghauri 1963 (Figs L, K) made the characters of aedeagus rather confused. After checking the genital characters of the new Ficiana species (specimens deposited in NWAFU), and also Fig. L in Ghauri’s illustrations, we believe that Fig. K (aedeagus, in lateral view) was positioned upside down. Moreover, the specimens in NWAFU show the aedeagus with only two pairs of processes [one pair near middle of ventro-basal protrusion and another pair at dorso-basal prolongation of dorsoatrium (latero-distally extended to base of anal tube)] (Figs 14, 15). This paper further defines this genus by including more morphological and revised genital characters.

Distribution

China (Guangxi), India.

Key to species of the genus Ficiana Ghauri (males)

1 Male pygofer triangular, not truncated caudally (Figs 5, 10, 11); anal tube appendage straight, branched apically (Figs 5, 10, 13); paramere spine-like apically, subapex with a short columnar process (Fig. 17) F. aurantia sp. n.
Male pygofer nearly hexagonal, truncated caudally (Ghauri 1963: Fig. 4E); anal tube appendage curved, unbranched apically (Ghauri 1963: Fig. 4F); paramere not spine-like apically, subapex without columnar process (Ghauri 1963: Figs 4I, J) F. pruthii Ghauri

Ficiana aurantia sp. n.

Figs 1–7, 8–18

Description

Body length: Male 3.75–4.05 mm.

Color. General color of male orange. Crown with a brownish shallow depression beside coronal suture, sublaterally near eyes with a narrow blackish stripe on each side which is continuously extended to base of face, the stripes curved near base of vertex (Figs 1, 3, 4). Frontoclypeus with transverse linear stripes laterally, adjacent to the lateral frontoclypeal suture brown with two meniscate, brownish patches, anteclypeus black apically, lorum sordid brownish centrally (Fig. 4). Eyes dark (Figs 1–4). Ocelli circled with whitish creamy patch (Figs 1–4). Pronotum with black, sinuate transverse depression laterally, mid-posteriorly reddish-black, laterobasal angles studded with reddish patches (Figs 1, 3). Centre of scutellum with a quadrate creamy patch anteriorly (Figs 1, 3). Abdomen black (Figs 1, 2). Fore and hindwing subhyaline, vein distinct (Figs 1, 2). Legs greyish (Fig. 2).

Basal abdominal sternal apodemes reaching the end of segment 4 (Fig. 7). Male pygofer almost triangular, distal lobe bearing 2 long and approximately 20 rigid setae, caudo-ventral margin infolded, poorly sclerotized and apically bearing irregular teeth (Figs 5, 10–12); dorsal bridge occupying almost 1/4 of the lobe, caudally membranous (Fig. 12). Subgenital plates far surpassing tip of pygofer, gradually narrowing, both lateral sides curved upwards in lateral view, B-group setae (20–22) near dorsal margin of the plate, arising near base towards subapex in 2-3 rows, C-group setae (8–9) arising in apical 2/5, uniseriate in most part but biseriate near apex, D-group setae sparsely scattered in several irregular rows (Figs 5, 10, 18). Paramere broad and sinuate in most part, with 3 teeth near apex, apically strongly narrowed, long and spine-like, and a columnar process toward base (Figs 5, 10, 17). Aedeagal in lateral view, shaft tubular, curved and gradually tapering, gonopore apical; dorso-atrium laterally flattened, longer than shaft, with wrinkles and numerous tiny strumae on surface, dorso-basal prolongation bifurcated apically; baso-ventral protrusion of aedeagus longer than the shaft and doratrium in profile, sub-basally strongly curved, apical part broadened and directed dorso-caudally, widest near apex, bearing numerous, bushy setae on the dorsal side; dorsal view, ventro-basal protrusion bifurcated sub-medially, divergent and almost same width in basal 2/3, apices narrowed and curved (Figs 5, 6, 14, 15). Connective closely related to aedeagus near base on dorsal side, posterior and lateral margins concave, anterior margin incised medially (Figs 14–16). Anal tube process strongly narrowing and branched apically, dorsal branch short and tuberculate, ventral branch smooth (Figs 5, 10, 13).

Type material

Holotype. ♂, China, Guangxi, Rongshui, 31 July, 2014, coll. Ye Xu. Paratypes. 4 ♂♂, same data as holotype.

Host plants

Unknown.

Etymology

The specific epithet is an adjective derived from the Latin word “aurantium”, referring to the orange body color of the new species.

Remarks

This new species differs from Ficiana pruthii Ghauri by the male pygofer not truncated caudally (Figs 10, 11) (male pygofer truncated caudally in F. pruthii); anal tube appendage straight and branched apically (Figs 5, 10, 13) (anal tube appendage curved, not branched apically in F. pruthii); paramere spine-like apically, subapex with a short columnar process (Fig. 17) (paramere not spine-like apically, subapically without columnar process in F. pruthii).

Distribution

China (Guangxi).

Discussion

Dworakowska (1970) studied the phenomenon of the fusion of the male plates in Cicadellidae. Although Dworakowska supposed this feature is “not rare in Cicadellidae, and it probably cannot say anything about the relationship among the higher taxa”. Dworakowska’s research still provided some hint for the classification of Empoascini, for the fused plates for some taxa in Empoasca-complex seem rather unique and distinguished them from other genera in this tribe. Seven genera, including Ficiana Ghauri, Ishiharella Dworakowska, Dialecticopteryx Kirkaldy, Mahmoodia Dworakowska, Nimabanana Dworakowska, Kotwaria Dworakowska and Daluana Ramakrishnan share this feature. Furthermore, all of these genera show some similarities in crown proportions (short and rounded anteriorly, anterior and posterior margins subparallel, middle length distinctly shorter than width between eyes, shared pygofer characteristics (without ventral appendage), the venation of forewing (all apical veins arising from longitudinal m cell) and hind wing (vein CuA unbranched). It is likely that these genera constitute a distinct group (Ficiana group) in the process of evolutionary history and are more closely related than they are to other genera in the Empoasca-complex of the tribe.

Ghauri (1963) suggested a resemblance with the genus Sujitettix Matsumura and Kybos Fieber; however, Sujitettix has been treated as a junior synonym of Apheliona Kirkaldy by Dworakowska (1970). The genus Ficiana is more similar to the six genera noted above. Among these genera, Ficiana seems more closely related to Dialecticopteryx Kirkaldy, Nimabanana Dworakowska, Kotwaria Dworakowska and Daluana Ramakrishnan in having a distinct coronal suture.

A key to the genera of the Ficiana group in the tribe as follows:

Key to genera of Ficiana group (males)

1 Coronal suture absent 2
Coronal suture present 3
2 Male pygofer without hook at its upper part; paramere well developed, neither concave nor provided with setae apically (spirally twisted or bifurcated apically) Ishiharella Dworakowska
Male pygofer has a well developed hook at its upper part; paramere very feebly developed and provided with setae at their concave tip Mahmoodia Dworakowska
3 Anal tube with baso-ventral processes 4
Anal tube without baso-ventral processes 5
4 Subgenital plates fused from base to subapex, lateral margins slightly convex basally and gradually narrowed apically Ficiana Ghauri
Subgenital plates fused only at their bases, lateral margins strongly convex basally and abruptly constricted near mid-length Dialecticopteryx Kirkaldy
5 Aedeagal shaft with a short ventro-basal and paired slender dorso-basal processes; subgenital plates fused only at their bases Nimabanana Dworakowska
Aedeagal shaft simple, without processes; subgenital plates fused in basal 2/3–4/5 6
6 Length of vertex, pronotum and scutellum subequal; aedeagus with preatrium; paramere with distinct preapical lobe Daluana Ramakrishnan
Length of vertex distinctly shorter than pronotum and scutellum; aedeagus without preatrium; paramere without preapical lobe Kotwaria Dworakowska

Acknowledgements

We give our sincere thanks to John Richard Schrock (Emporia State University, Emporia, USA) for reviewing the manuscript and suggesting improvements. This work was supported by the National Natural Science Foundation of China (No. 31270689).

References

  • Dworakowska I (1970) Remarks on the tribe Bakerini Mah. with description of one new genus of Typhlocybini (Cicadellidae: Typhlocybinae). Bulletin de l’Académie Polonaise des Sciences, Série des Sciences Biologiques 17(11–12): 691–696.
  • Dworakowska I (1993) Remarks on Alebra Fieb. and Eastern Hemisphere Alebrini (Auchenorrhyncha: Cicadellidae: Typhlocybinae). Entomotaxonomia 15(2): 91–121.
  • Ghauri MSK (1963) New fig leaf-hoppers (Homoptera: Cicadelloidea) from India with redescription of allied species under new genera. Annals and Magazine of Natural History (Series 13) 6: 465–475. doi: 10.1080/00222936308651384
  • Knight WJ (1965) Techniques for use in the identification of leafhoppers (Homoptera: Cicadellidae). Entomologist’s Gazette 16(4): 129–136.
  • Oman PW (1949) The Nearctic leafhoppers (Homoptera: Cicadellidae). A generic classification and check list. Memoirs of the Entomological Society of Washington 3: 1–253.
  • Rakitov RA (1998) On differentiation of cicadellid leg chaetotaxy (Homoptera: Auchenorrhyncha: Membracoidea). Russian Entomological Journal 6(3–4): 7–27.
  • Southern PS (1982) A Taxonomic Study of the Leafhopper Genus Empoasca (Homoptera: Cicadellidae) in Eastern Peru. Technical Bulletin 272. North Carolina State University, Raleigh, N.C., 194 pp.
  • Zhang YL (1990) A Taxonomic Study of Chinese Cicadellidae (Homoptera). Tianze Eldonejo, Yangling, Shaanxi, 218 pp.
login to comment