Key to species (males) of Bambusananus

1. Aedeagal shaft with a pair of apical lamellar processes, pair of small lateral spines present near base, directed apically (Figs. 21, 22)............................................................................. B. bispinosus sp. nov.

- Aedeagal shaft with only preapical processes (Figs.1–12)...................................................... 2

2. Aedeagal shaft with bilateral processes located near base, long and straight, directed apically, nearly 1/2 length of aedeagus (Figs. 11,12).................................................................................. .. B.yangae

- Aedeagal shaft with bilateral processes located subapically, directed basally (Figs.1–10)............................. 3

3. Processes of aedeagal shaft branched (Figs. 5, 6)..................................................... B. furcatus

- Processes of aedeagal shaft not branched (Figs. 1–4, 7–10)..................................................... 4

4. Ventral margin of aedeagal shaft without teeth (Figs. 1–4)..................................................... 5

- Ventral margin of aedeagal shaft with numerous small teeth (Figs. 7–10).......................................... 6

5. Aedeagal shaft with processes short, only reaching to apical one-fifth of aedeagus (Figs.1,2)............... B. bipunctatus

- Aedeagal shaft with processes long, reaching to middle of aedeagus (Figs.3,4)...................... B. cuihuashanensis

6. Aedeagal shaft on ventral margin with single longitudinal row of teeth (Figs.7,8)................................ B. lii

- Aedeagal shaft on ventral margin with many scattered teeth (Figs. 9,10)............................ B. maculipennis