sp. nov.
Diagnosis. The new genus differs from other genera in this tribe by the following combined characters: small to medium sized, depressed and ovoid (Figure 7, a, b, i, j); head with a longitudinal reddish broad stripe from crown apex to posterior margin of pronotum; subgenital plate without macrosetae near base; style with numerous microsetae in middle part (outer margin); connective Y-shaped; aedeagus dorsal apodeme well developed, without process on base.
Description. Length of male 3.5 to 3.7 mm, female 3.5 to 3.6 mm. Dorsum brown-yellowish; head with longitudinal reddish broad stripe from crown apex to posterior margin of pronotum. Forewing semitransparent; veins pale white; apical cells infuscated; forewing clavus with reddish stripe, wave-shape; brochosome area with two small dark spots; MP”+CuA’ vein with black spot on apex (Figure 7, a, b, i, j). Face yellow. Body flat in lateral view (Figure 7, b, j); crown produced; coronal suture distinct, not extended beyond the midline length of crown (Figure 7, a), or indistinct (Figure 7, b); Head subequal to pronotum width, length of crown at midline slightly longer than interocular width; scutellar suture distinct, nearly reach to sides; forewing apex rounded, the 2nd apical cell subequal to 4th apical cell; the 3rd apical cell smallest, triangular; hind wing R and MP veins directly connected at apex (Figure 7, d, l).
Male genitalia. Pygofer side with posterior margin rounded and with two clusters of setae on posterior and ventral parts; without macrosetae and process (Figure 7, c, k); subgenital plate gradually narrowed to apex, without big macrosetae at base; apex forked, or not forked (Figure 7, c, k); style slender, with a dense coverage of microsetae on outer margin; connective Y‒shaped, with central lobe developed (Figure 7, f, n); aedeagus with dorsal apodeme well developed, preatrium weak; shaft slender, with pair of symmetrical processes; phallotreme apical (Figure 7, h, o).
Remarks. The new genus is similar to Typhlocyba in coloration and male genitalia but can be distinguished from the latter by the absence of basal macrosetae on the subgenital plate and presence of dense microsetae at the midlength of the paramere.
Etymology. This generic name is feminine, formed by the Latin word “Subtilissimus ” which means “slender or fine”, referring to its aedeagal shaft in lateral view.
Distribution.China (Yunnan).
Subtilissimia fulva Yan & Yang sp. nov.
http://zoobank.org:act:BFCDAE7D-C5E4-4896-A841-E3BA4A559DE3
Figure 7, a–h
Material examined. Holotype, ♂, Mengla County, Yunnan Province, 608 m, 12 May 2015, Coll. Bin Yan. Paratypes, 1♂, 3♀♀, same data as holotype; 1♂, Mengla County, Yunnan Province, 604 m, 16 Nov. 2018, Coll. Likun Zhong.
Description. Length of male 3.5 to 3.7 mm. Coronal suture indistinct (Figure 7, a). Forewing clavus with deeply reddish stripe, elongated to apex (Figure 7, a, b). Male pygofer side slightly convex on upper posterior margin (Figure 7, c); style slender, parallel-sided (Figure 7, f); aedeagal shaft tubular, with pair of lateral processes arising near mid length, extended distally and slightly divergent from shaft, almost reaching shaft apex (Figure 7, g, h).
Etymology. The species name was derived from the Latin adjective “fulvus” = reddish-yellow, tawny, amber-coloured, which refers to the coloration of the longitudinal patch on the crown.
Remarks. The new species is very similar toSubtilissimiapellicula sp. nov.in size and coloration, but differs in having the aedeagal processes arising near the shaft mid length, longer, and not forked near the apex in lateral view (Figure 7, g, h).
Distribution.China (Yunnan).
SubtilissimiapelliculaYan & Yang sp. nov.
http://zoobank.org:act:2B04D9D2-665D-4A6D-B9C9-E75F3171D144
Figure 7, i–p
Material examined.Holotype, ♂, Simian Mountain, Chongqin, 1100 m, 12 Sep. 2017, Coll. Bin Yan. Paratypes, 3♂♂, same data as holotype.
Description. Body length 3.5 to 3.6 mm. Coronal suture distinct, short (Figure 7, i). Forewing with reddish stripe on hind margin, not reaching clavus apex (Figure 7, i, j). Male pygofer side rounded on posterior margin (Figure 7, m); style slender, apex sharp and slightly curved (Figure 7, n); Aedeagus tubular in ventral view, with membranous sides; shaft with pair of dorsal processes arising near apex, curved dorsally, forked near base (Figure 7, o, p).
Etymology.The species name was derived from the Latin noun “pellicula ” = “small skin”, which refers to a membranous structure on the shaft. It should be treated as a noun in apposition
Remarks. The new species is very similar to Subtilissimia fulva sp. nov. in size and coloration, but differs in having the aedeagal processes arising near the shaft apex, curved dorsally, and forked near the apex in lateral view (Figure 7, o, p).
Distribution. China (Chongqin).