Three new species of the bamboo-feeding planthopper genus Bambusiphaga Huang & Ding from China (

. Three new species of the bamboo-feeding genus Bambusiphaga Huang & Ding, 1979, B. parvula sp. nov., B. angulosa sp. nov., and B. nigrigena sp. nov., are described and illustrated from China. A key to species of the genus is provided. Habitus photos for adults and illustrations of male genitalia are also given.


Diagnosis
Bambusiphaga parvula sp. nov. can be distinguished from the remaining species of the genus by having the vertex and mesonotum without any dark brown markings, the ventral margin of the anal segment without a process, not incised medially, the pygofer without a spine on the ventral margin, the genital styles without a finger-like process at the base, not forked apically, and the aedeagus with some small teeth near the apex, not forked at the apex.

Etymology
The specific epithet is derived from the Latin word 'parvula', referring to the small spines near the apex of the aedeagus.  Colortion. General color yellowish (Fig. 1). Eyes light yellow to brown, ocelli reddish brown. Forewings (Fig. 1F) pale yellowish orange, with a small dark brown mark along cross veins CuP-CuA 1 , veins yellow. Abdomen (Fig. 1A-B) with dorsal areas of 5 th to 8 th segments dark brown. with length subequal to width, shorter than second segment (1: 3.11). Pronotum (Figs 1C, 2A) as long as vertex. Mesonotum (Figs 1C, 2A) 1.15 × as long as vertex and pronotum together in middle line. Forewings (Fig. 1F) longer in middle line than broad at widest part (3.03: 1), transverse venation located in middle near apex.

Remarks
This new species is similar to B. furca Huang & Tian, 1979 in general appearance, but differs in the following: (1)

Diagnosis
Bambusiphaga angulosa sp. nov. can be distinguished from the remaining species of the genus by having the vertex and mesonotum without any dark brown markings, the ventral margin of the anal segment without a process, not incised medially, the pygofer without a spine on the ventral margin, the genital styles without a finger-like process at the base, not forked apically, and the aedeagus without small teeth near the apex, forked at the apex.

Etymology
The specific epithet is derived from the Latin word 'angulosa', referring to the genital styles having an angular process near the apical ⅓.
Head and tHorax. Vertex (Figs 3C, 4A) at midline shorter than wide at base (1: 1.43), width at apex narrower than at base (1: 1.42), anterior margin broadly rounded, lateral and submedian carinae distinct,  Male genitalia. Anal segment (Fig. 4C) short, ring-like, ventral margin without a process. Pygofer (Fig. 4C-E) in profile with dorsal margin shorter than ventral margin, opening in posterior view longer than wide, no process at ventral margin. Genital styles (Fig. 4F-G) in posterior view moderately long, narrow and divergent, lateral margins subparallel, sinuate, tapering apically, with an angular process near apical ⅓, in profile ( Fig. 4G) with truncate apical margin, near apex with a stout process. Aedeagus without phyllobase. Phallus (Fig. 4H-I) slender, very long, tubular, in profile (Fig. 4I) broad at base, narrowing apically, strongly curved dorsally at basal ⅓ and curved ventrally at apical ⅓, forked at apex, with a node near apex.

Remarks
This new species is similar to B. parvula sp. nov. in general appearance, but differs in the following: Diagnosis Bambusiphaga nigrigena sp. nov. can be distinguished from the remaining species of the genus by having the vertex without any markings, the pronotum with dark brown markings on lateral areas, the mesonotum with dark brown markings, the forewings with a large black marking at the base, the anal segment with a long ventral process medially, and the pygofer without a medioventral process.

Etymology
The specific epithet is derived from a combination of the Latin root prefix 'nigr-' and 'gena', referring to the 'genae' being dark brown.

Remarks
This new species is similar to B. maculata  in general appearance, but differs in the following: (1) genae, anteclypeus and lateral sides of postclypeus (Fig. 5E) dark brown (vs genae