Toonglasa indomita and Patritius osuna are described as new species from Mexico and Venezuela respectively. The former is noted to have spectacular elongate spines protruding from the posterior end of the male 8th abdominal segment. A discussion is included of the sexual dimorphism in species of Toonglasa and the reasons for this are hypothesized. New bamboo host plants are included for previously described species of Toonglasa.