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Siricidae (Hymenoptera: Symphyta: Siricoidea) of the Western Hemisphere
CJAI 21, July, 2012
doi: 10.3752/cjai.2012.21
Nathan M. Schiff, Henri Goulet, David R. Smith, Caroline Boudreault, A. Dan Wilson, and Brian E. Scheffler
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Key to Tremex Species
1. A) Body setae generally short; frons in lateral view with setae about 0.5 times as long as distance between inner edges of lateral ocelli (Fig. B3.1).  
B) Female: cornus in lateral view with lateral edge protruded and angular in basal 0.3 (Fig. B3.3).
C) Female: abdominal tergum 9 laterally with slightly raised, semicircular pit anterior to each seta and pit clearly separated from other such pits (Fig. B3.5).
D) Female: metatarsomere 2 in lateral view with dorsal edge clearly convex (Fig. B3.7).
E) Male: metatarsomere 5 as long as metatarsomere 2 (Fig. B3.9).
   
a) Body setae generally long; frons in lateral view with setae about as long as or longer than distance between inner edges of lateral ocelli (Fig. B3.2).  
b) Female: cornus in lateral view with lateral edge straight in basal 0.3  (Fig. B3.4).
c) Female: abdominal tergum 9 laterally with distinct circular pit surrounding each setae, and pit contiguous with other such pits (Fig. B3.6).
d) Female: metatarsomere 2 in lateral view with dorsal edge almost straight (Fig. B3.8).
e) Male: metatarsomere 5 as long as metatarsomere 2 + 3 (Fig. B3.10).