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The taxonomy of the Oriental species of Helopeltis is revised and a review of the economic literature is given. An identification key is provided for the 14 recognized species, one of which, H. Sulawesi, is described as new. A diagnosis and brief description is given for each species, as well as illustrations of useful taxonomic characters, information on distributions and host records, and a discussion of any known or suspected misidentifications. Lectotype designations are made for 13 nominal species and the following new synonymies are established: H. bradyi Waterhouse = H. ceylonensis De Silva, syn. n and H. romundei Waterhouse, syn. n; H. cinchonae Mann = H. brevicornis Poppius, syn. n.; H. clavifer (Walker) = H. australiae Kirkaldy, syn. n and H. niger Walker, syn. n; H. cuneata Distant = H. elegans Poppius, syn. n; H. fasciaticollis Poppius = H. pallidus Poppius, syn. n and H. pallidiceps Poppius, syn. n; H. theivora Waterhouse = H. oryx Distant, syn. n The somewhat obscure synonymy of H. theobrotnae Miller under H. theivora is confirmed. Two subgenera are recognized and diagnosed: Afropeltis subgen. n (type species Eucerocoris westwoodi White), including all African species of the genus, and Helopeltis sensu stricto, containing the Oriental and Australasian species.

Abstract— The history of biogeographic theories about the Indo‐Pacific is reviewed. The methods of cladistic biogeography are introduced and 10 monophyletic groups of Miridae (Insecta: Heteroptera) are used to apply these methods in the Indo‐Pacific. The results are summarized and then combined with those of Duffels on cicadas. The results of most previous schemes are rejected on the basis of new results because the prior studies applied methods which failed to correctly interrelate areas of endemism within the Indo‐Pacific and between this and other regions. The composite biotic nature of New Guinea is stressed. “it is the presence in and not the absence from land areas of organisms that calls for reasoned explanations” (Evans, 1959)

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The African species of Eurystylus are revised and their status as pests of important agricultural crops is reviewed. A key is provided for the 12 recognized species, one of which, £. lestoni, is described as new. A diagnosis and description are provided for each species, as well as illustrations of diagnostic taxonomic characters and information on host-plant associations and distribution. Lectotype designations are made for eight nominal species of Eurystylus and two species are removed from the genus. The following new synonymies are established: £. annulipes (Poppius)= £. annulipes impundatus (Poppius), syn. n.; £. bellevoyei (Reuter)=£. parvulus (Reuter), syn. n., £. occidentalis Wagner, syn. n., £. gallouedeci Villiers, syn. n. and £. argenticeps Odhiambo, syn. n.; £. lineaticollis Poppius=£. pallidiventris Poppius, syn. n. and £. mutabilis Bergoth, syn. n.; £. oldi Poppius=£. kivuensis Schouteden, syn. n., £. risbeci Schouteden, syn. n,, £. phaiopterus Odhiambo, syn. n., £. immaculatus Odhiambo, syn. n. and £. bilqis Linnavuori & Al-Safadi, syn. n. Two species are removed from the genus Eurystylus (£. sobrius (Walker)=Plesiocapsus sobrius (Walker), comb. n. and £. sericeus (Walker)=Proboscidocoris sericeus (Walker), comb, n.) and one species, £. rufocunealis Poppius, is assigned the status of nomen dubium.