Parathailocyba, Zhang, Yalin, Gao, Xia & Huang, Min, 2012

Zhang, Yalin, Gao, Xia & Huang, Min, 2012, Review of Genus Zyginella LÖw (Hemiptera: Cicadellidae: Typhlocybinae: Zyginellini) with Description of Four New Species and a New Genus from China, Zootaxa 3180, pp. 19-34 : 31

publication ID	https://doi.org/ 10.5281/zenodo.213309
DOI	https://doi.org/10.5281/zenodo.6170831
persistent identifier	https://treatment.plazi.org/id/132E87A1-FFF8-FFE4-9EED-98C6FCE3F90C
treatment provided by	Plazi
scientific name	Parathailocyba
status	gen. nov.

Treatment

Parathailocyba View in CoL gen. nov.

Type species: Zyginella orla Dworakowska, 1977: 26 –28, Chou & Zhang 1985: 293

Description. Vertex long, produced medially (Fig. 22); face flattened and long (Fig. 24). Forewing rather narrow apically, with second apical cell equal to third, third often with distinct dark spot (Figs. 22, 23). Submarginal vein of hind wing extended to CuA slightly basad of transverse m-cu.

Male abdominal apodemes small ( Fig. 74 View FIGURES 74 – 80 ).

Male pygofer short and tall, bilobate caudally, with sclerotized process emerging between two lobes, directed caudoventrally ( Fig. 76 View FIGURES 74 – 80 ). Subgenital plate with large, strongly sclerotized ledge on dorsal side ( Fig. 78 View FIGURES 74 – 80 ). Paramere with long smoothly bent and tapered apical part, with few setae on central part ( Fig. 77 View FIGURES 74 – 80 ). Connective with long manubrium and central lobe ( Fig. 75 View FIGURES 74 – 80 ). Aedeagus preatrium short, shaft tubular; gonopore apical ( Figs. 79, 80 View FIGURES 74 – 80 ).

Distribution. Vietnam, China (Guangdong, Yunnan)

Remarks. The new genus is segregated from Zyginella LÖw for the following reasons. The vertex and face are much longer (Figs. 22, 24). The forewing is rather narrow apically (Figs. 22, 23) while most Zyginella have the forewing apex obliquely truncate; the second apical cell equal to third while in most Zyginella the second is larger. The male abdominal apodemes are smaller ( Fig. 74 View FIGURES 74 – 80 ). The male pygofer is shorter and taller, bilobate caudally, with a sclerotized process directed caudoventrally ( Fig. 76 View FIGURES 74 – 80 ) while in most Zyginella , the pygofer process is directed anteroventrally ( Figs. 42 View FIGURES 39 – 47 , 48 View FIGURES 48 – 56 , 60 View FIGURES 57 – 65 , 69 View FIGURES 66 – 73 ). The subgenital plate has a large, strongly sclerotized ledge on the dorsal side ( Fig. 78 View FIGURES 74 – 80 ) while in Zyginella it is lamellate or tubular and with different chaetotaxy ( Figs. 25 View FIGURES 25 – 27. Z , 28, 31, 34, 37, 45, 54, 63, 68). The paramere has fewer setae ( Fig. 77 View FIGURES 74 – 80 ). The connective has a long narrow manubrium and central lobe ( Fig. 75 View FIGURES 74 – 80 ) while in Zyginella the connective is short and V-shaped ( Figs. 51 View FIGURES 48 – 56 , 61 View FIGURES 57 – 65 , 70 View FIGURES 66 – 73 ). The aedeagus preatrium is shorter ( Fig. 80 View FIGURES 74 – 80 ).

The new genus resembles Thailocyba Mahmood, 1967 , but differs in having smaller abdominal apodemes ( Figs.74 View FIGURES 74 – 80 , 83), the pygofer bilobate with a sclerotized process on its side ( Figs. 76 View FIGURES 74 – 80 , 84), the subgenital plate with a large sclerotized dorsal ledge running along its middle up to the apex ( Figs. 78 View FIGURES 74 – 80 , 85); and the aedeagus tubular and simple ( Figs. 79, 80 View FIGURES 74 – 80 ). Thailocyba has the aedeagus compressed and with basal processes curved dorsad (Figs. 81, 82).

In Thailocyba , the dorsal lobe of the pygofer is larger than the ventral lobe, almost overlapping the ventral lobe, and the pygofer has two groups of small stout microsetae on caudal protrusions; this makes the pygofer almost as long as tall, while in the new genus the setae are relatively small, and the dorsal lobe is not detectable. In the new genus, the sclerotized process protrudes prominently, while in Thailocyba , it inconspicuously extends along the caudal margin of the dorsal lobe.

The subgenital plate in the new genus differs from Thailocyba by its longitudinal sclerotized dorsal ledge and apical part with variously sclerotized two protrusions, two macrosetae and a few sensory pits, while in Thailocyba there are three protrusions, one macroseta and several minute microsetae in addition to some sensory pits.

Etymology. The new genus name was formed by adding the Latin prefix “ para- ” to Thailocyba Mahmood , indicating similarity to the latter. The gender is feminine.