Theobroma bicolor is widely distributed in the Neotropics with great potential for economic use. However, very little is available in literature about its pollinators and reproductive ecology in comparison to what is available about its economically more important relative T. cacao. We studied aspects of the floral biology, reproductive phenology and biotic restrictions to the reproduction of the species. We measured, observed and monitored flowers and described their morphology, breeding system, receptivity times of the stigma and peaks of flower and fruit production. During 20 consecutive days, we collected floral visitors of 135 ± 45 flowers per day. We also calculated the damage in fruit production generated by the mistletoe (Oryctanthus cf. alveolatus) and the fungus (Moniliophthora roreri). We found that flower stigma was more receptive between 6:00–10:00 and flowers last up to three days on the tree, which is less time than what has been reported elsewhere. We collected 211 insects from 68 different morphotypes, but five of these represented 49.8% of the total; specimens of Ceratopogonidae, Chironimidae and Sciaridae were the most abundant and could be pollinators of the species. The flowering of T. bicolor showed a positive correlation (r > 0.75) with the months with higher temperature and solar radiation. We recorded an average per tree of 7 ± 5 fruits. We found a drastic loss of 84% of fruits in the plants infested by the mistletoe O. cf. alveolatus and of 29% when infested by the fungus M. roreri. The results of this study serve as a basis to generate local management practices.

双色可可瘤在新热带地区分布广泛，具有巨大的经济应用潜力。但是，与其传粉媒介和繁殖生态学相比，在经济上更为重要的相对可可树（T. cacoo）的文献很少。我们研究了花卉生物学，生殖物候学和生物对物种繁殖的限制等方面。我们测量，观察和监测了花朵，并描述了它们的形态，育种系统，柱头的接受时间以及花朵和果实产量的峰值。在连续的20天中，我们每天收集135±45朵鲜花的访客。我们还计算了槲寄生（Oryctanthus cf. alveolatus）对水果生产造成的损害。）和真菌（Moniliophthora roreri）。我们发现，花柱头在6：00-10：00之间更易接受，花朵在树上的寿命长达三天，这比其他地方所报道的时间要短。我们从68种不同的形态中收集了211种昆虫，但其中5种占总数的49.8％。Ceratopogonidae，Chironimidae和Sciaridae的标本数量最多，可能是该物种的传粉媒介。 与较高温度和太阳辐射的月份相比，双色T.的开花表现出正相关（r > 0.75）。我们记录的每棵树平均有7±5个水果。我们发现，在槲寄生O侵染的植物中，水果的损失高达84％。cf. 肺泡被真菌罗氏杆菌侵染时占29％。这项研究的结果可作为产生当地管理实践的基础。