. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. %.' O. â P. costatus ^ P. sulcatus Figure 127. Distributions of Phstomyrmex costatus and Pristomyrmex sulcatus. Whether or not P. costatus and P. sul- catus have a relationship of allopatric dis- tribution needs further studies. According to the present records, as shown in Figure 127, P. costatus occurs in Negri Sembilan of Malaya, Singapore, Sabah, Sarawak, Borneo, and the Philippines but P. sulcatus in Pahang of Malaya, Thailand, Nepal, Burma, and China. Further, whether P. sulcatus, P. costatus, and P. brevispinos

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. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. %.' O. â P. costatus ^ P. sulcatus Figure 127. Distributions of Phstomyrmex costatus and Pristomyrmex sulcatus. Whether or not P. costatus and P. sul- catus have a relationship of allopatric dis- tribution needs further studies. According to the present records, as shown in Figure 127, P. costatus occurs in Negri Sembilan of Malaya, Singapore, Sabah, Sarawak, Borneo, and the Philippines but P. sulcatus in Pahang of Malaya, Thailand, Nepal, Burma, and China. Further, whether P. sulcatus, P. costatus, and P. brevispinosus evolved from the results of character dis- placement also needs further studies ( Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum

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