Key to Oriental species of Bothriomiris

1. Pronotum with triangular, ochraceous patch from anterior margin till its medial portion............... B. ornatus Bergroth

- Pronotum entirely reddish to black (Figs. 3–4), sometimes with anterior lobe yellow and with yellow swelling from anterior lobe till posterior margin (Figs. 1–2), but never with triangular, ochraceous patch anteriorly........................... 2

2. Scutellum entirely blackish brown; corium with rounded, contrastingly pale patch apically (see Yasunaga 2000: Fig. 80 and Yasunaga & Miyamoto 2006: Figs. 1 A, 2A); metepisternum sparsely punctate (see Yasunaga 2000: Fig. 81)................................................................................................ B. capillosus Yasunaga

- Scutellum usually dark brown with more or less developed pale pattern apically (Figs. 1–4), sometimes entirely reddish; corium without pale patch apically (Figs. 3–4), or with Y-shaped yellow pattern (Figs. 1–2); metepisternum distinctly punctate.................................................................................................... 3

3. Dorsal surface entirely reddish............................................................ B. testaceus Distant

- Dorsal surface usually dark brown or blackish dark brown, sometimes with yellow, reddish or ochraceous areas (Figs. 1–4). 4

4. Vertex with two distinct, broad tubercles, each situated laterally and contiguous with inner margin of eye and occipital carina; antennal segment I longer than width of vertex (Fig. 4); left paramere with sensory lobe strongly convex, without any sharply pointed process (see Gorczyca 2005: Fig. 3)............................................. B. sulawesicus Gorczyca

- Tubercles on vertex weakly developed; antennal segment I nearly as long or shorter than width of vertex (Figs. 1–3); left paramere with sensory lobe not convex (Fig. 37), or if convex furnished with sharply pointed process (see Gorczyca 2005: Fig. 6).................................................................................................. 5

5. Dorsal surface almost entirely blackish dark brown except dull yellowish apex of scutellum, transverse patch on apex of

corium, and apex of cuneus (Fig. 3); pronotal calli punctate; posterior lobe of pronotum entirely blackish (Fig. 3); left paramere with sensory lobe distinctly convex, furnished with distinct spine (see Gorczyca 2005: Fig. 6).......... B. lugubris Poppius - Dorsum varying from pale brown with reddish and yellowish tinges to dark brown or blackish with yellowish stripes and patches (Figs. 1–2); pronotal calli inpunctate; posterior lobe of pronotum with distinct, pale, longitudinal stripe at median (Figs. 1–2); left paramere with sensory lobe indistinctly convex (Fig. 22)....................... B. dissimulans (Walker)