DOIAbstract
Key to the Species of Nigrotomocoris 1. Tibiae and antennal segment II pale yellowish brown; distribution: San Luis Potosi, Mexico........ tibiopallidus (Carvalho) – Legs and antennal segment II uniformly black................................................................2 2. Larger species, length 3.24–3.88 mm; head with a broad pale yellowish-brown fascia across base; basal half of antennal segment II distinctly thicker than apical half; labium relatively short, extending to middle coxae; genital tubercle stout (Fig. 133), broadly rounded apically; distribution: Oaxaca and Puebla, Mexico................................ nigrus (Carvalho) – Generally smaller species, length 3.00– 3.36 mm; head uniformly black, at most, with a n...
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