Key to the Arabian species of Pinophilinus

1 Large species; body length approximately 7.5 mm; length of forebody> 3.0 mm. Antenna approximately 2.1 mm long and slender; antennomere III approximately 3 times as long as broad; IX distinctly oblong. Coloration of body pale-reddish. Body, particularly abdomen, with coarse and dense punctation. Sinai Peninsula (Map 1).............. ......................................................................................................... P. schatzmayri (KOCH)

- Distinctly smaller and more slender species; body length <7.0 mm; length of forebody <2.5 mm. Antenna <1.5 mm long and less slender; antennomere III at most twice as long as broad; IX at least as broad as long..........................................................................2

2 Body dark-brown. Eyes small, shorter than postocular region in dorsal view (ASSING 2012: figure 11). Antenna shorter (1.2 mm) and less slender (ASSING 2012: figure 10); antennomere III approximately 1.5 times as long as broad; IV-V indistinctly oblong. Pronotum somewhat flattened and distinctly narrowed posteriorly (ASSING 2012: figure 11). Head and pronotum with moderately dense punctation; interstices on average broader than diameter of punctures. ♂: sternite VIII with very small posterior excision (ASSING 2012: figure 13); aedeagus symmetric and apically very acute in ventral view; internal sac without large sclerotized spine (ASSING 2012: figures 14-15). Socotra Island (Yemen) (Map 1)..................................................................... P. socotranus ASSING

- Body pale-reddish. Eyes rather large, distinctly longer than postocular region in dorsal view. Antennae longer (1.4 mm) and more slender (Fig. 1); antennomere III approximately twice as long as broad; IV-V approximately 1.5 times as long as broad. Pronotum more convex in cross-section and less strongly narrowed posteriorly (Fig. 2). Head and pronotum with dense punctation; interstices on average narrower than diameter of punctures (Fig. 2). ♂: sternite VIII with larger and deeper posterior excision (Fig. 4); aedeagus with slightly asymmetric and much less acute apex in ventral view; internal sac with large sclerotized spine (Fig. 5). Southwestern Saudi Arabia (Map 1)....................................................................................... P. spinosus nov.sp.