Daochia, Wei & Zhang & Webb, 2006

Wei, C., Zhang, Y. - L. & Webb, M. D., 2006, New synonymy in the leafhopper genus Stegelytra Mulsant and Rey and description of a new genus (Hemiptera: Cicadellidae: Stegelytrinae), Journal of Natural History 40 (35 - 37), pp. 2057-2069 : 2062-2063

Daochia gen. nov.

Type species. Daochia reticulata sp. n.

Description

Male. Head distinctly narrower than pronotum; eyes encroaching onto pronotum laterally, in dorsal view. Vertex with median length shorter than width between eyes, rounded to front, depressed centrally, smooth; coronal suture extending to level of fore margin of eye; ocelli located on junction of face and vertex, approximately one-third own diameter from corresponding eye. Face as long as wide, lateral margin not incurved below eye; shagreened, finely rugose below eye; lateral frontal suture directed to outer margin of corresponding ocellus; transclypellar suture obscure medially; clypeus appearing pinched ventrally (more so in male); clypellus broad with apical area depressed laterally (both more so in male), convex in profile, anterior margin distinctly concave with a stout seta on each side; rostrum very short; labrum extended to near apex of labium; lora very narrow; gena somewhat longitudinally sulcate under eye; antennae very long, longer than body, arising near lower corner of eyes; basal antennal segment slightly more enlarged than normal; antennal ledge distinct. Pronotum short and broad, about three times broader than median length, smooth; lateral margin long with dorsopleural carina present, straight; posterior margin slightly sinuously concave. Scutellum longer than pronotum, basal width nearly as long as lateral margin; depressed at transverse suture, elevated to apex thereafter; transverse suture distinct. Fore wing elongate, venation reticulate subapically on anterior margin; claval veins united by cross-vein and a cross-vein present between inner claval vein and claval suture; apical margin of appendix nearly truncate. Legs with spinulation of deltocephaline type, without extra setae; hind femur long, apical setal formula 2+2+1 with setae not elevated on strong bases.

Male pygofer broad in lateral view with short to long macrosetae; dorsal margin long with a short lightly sclerotized area adjacent to anal tube in dorsal view; laterobasal corner with a short lightly sclerotized fracture and a slightly more dorsad lightly sclerotized patch in pygofer wall, posterior to fracture ventral margin thickened and infolded ( Figure 22 ). Tenth segment very short and membranous. Valve fused with subgenital plate, the latter extended to near apex of pygofer, narrowly triangular shaped with an irregular row of moderately long macrosetae centrally over distal half of plate; a somewhat triangular-shaped process sub-basally, projecting into pygofer in lateral view; lateral margin folded inward. Paramere very long and narrow; inner basal apophysis short, outer basal apophysis elongate, tapered to apex; apical process elongate, tapered to narrowly rounded incurved apex, with several subapical setae at inner margin. Connective oblong with arms and stem poorly differentiated, medially weakly sclerotized. Aedeagal shaft in lateral view curved dorsad, fimbriolate apically, with one or two pairs of basal processes; basal apodeme moderately long, articulated with a hood-like dorsal connective in pygofer phragma.

Female. Pregenital sternite much longer than sternite VI. Second valvulae with dorsal hyaline region present one-third distance from base to apex, thereafter dorsal margin with fine closely set teeth.

Distribution

China and Vietnam.

Etymology

The generic name is an arbitrary combination of letters. Gender is feminine.

Biology

Not known (see Introduction).

Diagnosis

This genus is similar to Stegelytra in having reticulate fore wing venation but has many features in common with some other oriental genera recently placed in Stegelytrinae (see Introduction). It differs from these genera, in addition to its reticulate fore wing venation, in having the anteclypeus broad and convex with latero-apical areas depressed (similar to Thagria ( Coelidiinae )), lora very narrow, pronotum with lateral carina straight and the posterior margin sinuate, valve fused with the subgenital plate, the latter with a sub-basal process, dorsal connective of the pygofer distant from the Xth segment, connective oblong with arms and stem undifferentiated, paramere very elongate and by the apically fimbriolate aedeagus.

Key to species (males)

1. Aedeagus with a long preatrium with an elongate and short pair of process arising from its base ( Figure 31 ); China........... longshengensis

– Aedeaus not as above.................. 2

2. Aedeagus broadly U-shaped with a single pair of sub-basal processes ( Figure 36 ); connective broad ( Figure 33 ); China............ bicornis

– Aedegus and connective not as above............. 3

3. Aedeagus with anterior processes short and posterior processes long ( Figure 25 ); China..................... reticulata

– Aedeagus with anterior processes long and posterior processes short ( Figure 42 ); Vietnam.................... fyanensis

Figures

Figures 15–27. Daochia reticulata sp. n. (15) Head and thorax, dorsal view. (16) Face, male. (17) Face, female. (18) Fore wing. (19) Apical part of female abdomen, ventral view. (20) Second valvulae, left lateral view. (21) First valvulae, left lateral view. (22) Valve and subgenital plate, ventral view. (23) Aedeagus, paramere, and connective, dorsal view. (24) Male genital capsule and anal tube, left lateral view. (25) Aedeagus, left lateral view. (26) Aedeagus, posterior view. (27) Detail of antero-ventral corner of male pygofer, lateral view.

Figures 28–32. Daochia longshengensis sp. n. (28) Male genital capsule and anal tube, left lateral view. (29) Connective and paramere, dorsal view. (30) Aedeagus, posterior view (in direction of arrow in Figure 31). (31) Aedeagus, left lateral view. (32) Apex of aedeagus, posterior view.

Figures 33–38. Daochia bicornis sp. n. (33, 34) Connective and paramere, dorsal and ventral view, respectively. (35, 36) Aedeagus posterior and left lateral view, respectively. (37, 38) Apex of aedeagal shaft, anterior and posterior view, respectively.

Figures 39–44. Daochia fyanensis sp. n. (39) Antero-ventral area of male pygofer, left lateral view. (40) Posterodorsal area of male pygofer and anal tube, left lateral view. (41, 42) Aedeagus, posterior and left lateral view, respectively. (43) Connective and paramere, dorsal (left side) and ventral (right side) view. (44) Male pygofer and anal tube, dorsal view.