Macroinvertebrate predators such as backswimmers (Heteroptera: Notonectidae), dragonflies (Odonata: Aeshnidae), and predatory diving beetles (Coleoptera: Dytiscidae) naturally inhabit aquatic ecosystems. Some aquatic ecosystems inhabited by these macroinvertebrate predator taxa equally form malaria vector larval habitats. The presence of these predators in malaria vector larval habitats can negatively impact on development, adult body size, fecundity, and longevity of the malaria vectors, which form important determinants of their fitness and future vectorial capacity. These potential negative impacts caused by aquatic macroinvertebrate predators on malaria vectors warrant their consideration as biocontrol agents in an integrated program to combat malaria. However, the use of these macroinvertebrate predators in malaria biocontrol is currently constrained by technical bottlenecks linked to their generalist predatory tendencies and often long life cycles, demanding complex rearing systems. We reviewed the literature on the use of aquatic macroinvertebrate predators for biocontrol of malaria vectors from the An. gambiae s.l. complex. The available information from laboratory and semi-field studies has shown that aquatic macroinvertebrates have the potential to consume large numbers of mosquito larvae and could thus offer an additional approaches in integrated malaria vector management strategies. The growing number of semi-field structures available in East and West Africa provides an opportunity to conduct ecological experimental studies to reconsider the potential of using aquatic macroinvertebrate predators as a biocontrol tool. To achieve a more sustainable approach to controlling malaria vector populations, additional, non-chemical interventions could provide a more sustainable approach, in comparison with the failing chemical control tools, and should be urgently considered for integration with the current mosquito vector control campaigns.

In this study, two genera of Afrotropical Sesiidae, Tipulamima Holland, 1893 and Macrotarsipodes Le Cerf, 1916 stat. rev., are redefined and redescribed, the latter being resurrected from synonymy with the former as a valid genus. Both genera are confirmed to belong to the tribe Synanthedonini. The genera closest to Tipulamima are unknown. Macrotarsipodes is related to Macrotarsipus Hampson, [1893] from Southeast Asia and Lepidopoda Hampson, 1900 from Africa and Southeast Asia. The latter genus as well as Pedalonina are transferred to Synanthedonini. Uranothyris Meyrick, 1933 syn. nov. is regarded as a subjective junior synonym of Tipulamima. Checklists of the species assigned to Tipulamima and Macrotarsipodes are provided. One new species, Tipulamima hesperia sp. nov., from Guinea and Ghana and the previously unknown male of T. pterotarsa (Meyrick, 1933) comb. nov. (Uranothyris) are described and depicted. The following new combinations are introduced: Macrotarsipodes leptosceles (Bradley, 1968) comb. nov. (Synanthedon), M. pedunculata (Hampson, 1910) comb. nov. (Ichneumenoptera), M. sexualis (Hampson, 1910) comb. nov. (Macrotarsipus), M. tricinctus Le Cerf, 1916 comb. rev., Synanthedon malimba (Beutenmller, 1899) comb. nov. (Sesia), Malgassesia ivondro (Viette, 1955) comb. nov. (Tipulamima), M. opalimargo (Le Cerf, 1913) comb. nov. (Sesia), Lepidopoda aericincta (Meyrick, 1928) comb. nov. (Aegeria), L. cyanospira (Meyrick, 1928) comb. nov. (Aegeria), L. dasysceles (Bradley, 1968) comb. nov. (Synanthedon), L. erythromma (Hampson, 1919) comb. nov. (Synanthedon), L. festiva (Beutenmller, 1899) comb. nov. (Sesia), L. flavipalpis Hampson, 1910 comb. rev., L. nuba (Beutenmller, 1899) comb. nov. (Sesia), L. rubripicta (Hampson, 1919) comb. nov. (Synanthedon), L. waterloti (Le Cerf, 1913) comb. nov. stat. nov. (Macrotarsipodes), Episannina sylphina (Hampson, 1919) comb. nov. (Lepidopoda) (Synanthedonini), Chamanthedon auronitens (Le Cerf, 1913) comb. nov. (Sesia), Pyranthrene hypocalla (Le Cerf, 1937) comb. nov. (Tipulamima), P. nigriceps (Hampson, 1919) comb. nov. (Tipulamima) (Osminiini). Junior subjective synonyms are: Aegeria rubripalpis Meyrick, 1932 syn. nov. of L. rubripicta, Aegeria mercatrix Meyrick, 1931 syn. nov. of L. aericincta and Aegeria pyrostoma Meyrick, 1927 syn. rev. of L. erythromma. Lectotypes of Tipulamima haugi (Le Cerf, 1917), T. flammipes (Hampson, 1910) and Macrotarsipodes sexualis comb. nov. are designated. Clerodendrum paniculatum L. (Lamiaceae) is reported as a host plant of Tipulamima for the first time. The larvae of three species of Macrotarsipodes and several species of Lepidopoda are known to be pests of Ipomoea batatas (L.) Lam. (Convolvulaceae).

A review of the Mesoamerican genus Paraphlebia Selys in Hagen, 1861 is presented, including diagnoses, illustrations of diagnostic characters, and distribution maps for all species. A key to the known males and females is provided. Eleven new species are described: P. akan Ortega-Salas Gonzlez-Soriano. sp. nov., P. chaak Ortega-Salas Gonzlez-Soriano sp. nov., P. chiarae Ortega-Salas sp. nov., P. esperanza Ortega-Salas Gonzlez-Soriano sp. nov., P. flinti Ortega-Salas Gonzlez-Soriano sp. nov., P. hunnal Ortega-Salas Gonzlez-Soriano sp. nov., P. itzamna Ortega-Salas, Jocque Gonzlez-Soriano sp. nov., P. ixchel Ortega-Salas Gonzlez-Soriano sp. nov., P. kauil Ortega-Salas Gonzlez-Soriano sp. nov., P. kinich Ortega-Salas Gonzlez-Soriano sp. nov., and P. kukulkan Jocque Ortega-Salas sp. nov.

Aquatic ecosystems around the world are contaminated with a wide range of anthropogenic chemicals, including metals and organic pollutants, that originate from point and nonpoint sources. Many of these chemical contaminants have complex environmental cycles, are persistent and bioavailable, can be incorporated into aquatic food webs, and pose a threat to the health of wildlife and humans. Identifying appropriate sentinels that reflect bioavailability is critical to assessing and managing aquatic ecosystems impacted by contaminants. The objective of the present study is to review research on riparian spiders as sentinels of persistent and bioavailable chemical contaminants in aquatic ecosystems. Our review of the literature on riparian spiders as sentinels suggests that significant progress has been made during the last two decades of research. We identified 55 published studies conducted around the world in which riparian spiders (primarily of the families Tetragnathidae, Araneidae, Lycosidae, and Pisauridae) were used as sentinels of chemical contamination of lotic, lentic, and estuarine systems. For several contaminants, such as polychlorinated biphenyls (PCBs), Hg, and Se, it is now clear that riparian spiders are appropriate sentinels. However, many contaminants and factors that could impact chemical concentrations in riparian spiders have not been well characterized. Further study of riparian spiders and their potential role as sentinels is critical because it would allow for development of national-scale programs that utilize riparian spiders as sentinels to monitor chemical contaminants in aquatic ecosystems. A riparian spider sentinel program in the United States would be complementary to existing national sentinel programs, including those for fish and immature dragonflies. Environ Toxicol Chem 2022;41:499-514. © 2021 SETAC.

A modified and expanded definition of the Drepanosticta carmichaeli-group is given. This includes the species: D. annandalei Fraser, 1924, D. brownelli Tinkham, 1938, D. carmichaeli (Laidlaw, 1915), D. emtrai Dow, Kompier Phan, 2018, D. hongkongensis Wilson, 1997, D. jurzitzai Hmlinen, 1999, D. sumatrana Sasamoto Karube, 2007, D. tenella Lieftinck, 1935, D. vietnamica Asahina, 1997 and D. wildermuthi sp. nov.). The species of the group are reviewed and in most cases illustrated, diagnostic notes are given wherever possible. Drepanosticta polychromatica Fraser, 1931 is considered to be a junior synonym of D. carmichaeli and variation in D. carmichaeli is discussed. Drepanosticta wildermuthi sp. nov. from the Central Highlands of Vietnam (holotype male from Bao Loc district, Lam Dong Province) is described. The female of D. jurzitzai Hmlinen, 1999 is described for the first time. A key to the males of the Drepanosticta carmichaeli-group is provided.

Urban settlements range from small villages in rural areas to large metropoles with densely packed infrastructures. Urbanization presents many challenges to the maintenance of freshwater quality and conservation of freshwater biota, especially in Africa. There are many opportunities as well, particularly by fostering contributions from citizen scientists. We review the relationships between dragonflies and urbanization in southern Africa. Shifts in dragonfly assemblages indicate environmental change, as different species are variously sensitive to abiotic and biotic water and bank conditions. They are also conservation umbrellas for many other co-occurring species. Major threats to southern African dragonflies include increasing infrastructure densification, frequent droughts, habitat loss, pollution, and invasive alien vegetation. Mitigation measures include implementation of conservation corridors, maintenance of healthy permanent ponds, pollution reduction, and removal of invasive alien trees. Citizen science is now an important approach for supplementing and supporting professional scientific research.

Megalogomphus sumatranus (Krüger, 1899) and its allies in Sundaland are reviewed. The accessory genitalia of the males of this genus, hardly considered previously, are found to be taxonomically informative. The taxon from Borneo previously treated as M. sumatranus is described from both sexes as M. buddi sp. nov. (holotype ♂ Sungai Datai, Nanga Bloh, Lanjak Entimau Wildlife Sanctuary, Kapit Division, Sarawak, Malaysia, 22 viii 2013, leg. J. anak Awan M. anak Adau; deposited at the Naturalis Biodiversity Center, Leiden, the Netherlands). Megalogomphus borneensis (Laidlaw, 1914), described as a subspecies of M. icterops (Martin, 1903) and subsequently relegated to the synonymy of that species, is considered to be a distinct species. Megalogomphus icterops is however considered to be a junior synonym of M. sumatranus. A re-description of the holotype of Megalogomphus borneensis is provided as is the first description of the female. Descriptive notes with illustrations of Megalogomphus sumatranus are given.

We used morphological and molecular characters to review the classification of damselflies in the genus Megalestes Selys, 1862 (Zygoptera: Odonata). Several methods were used for this review, including morphology, cladistics, genetic distance analysis, and molecular taxonomy. Six species were newly defined as junior synonyms (Megalestes palaceus to Megalestes haui, Megalestes chengi to Megalestes micans, Megalestes discus to Megalestes micans, Megalestes raychoudhurii to M. micans, Megalestes maai to Megalestes riccii, and Megalestes tuska to M. riccii). The total species number in Megalestes was reduced from 18 to 12. The importance of an objective species diversity measure is discussed.

The larva of Agriocnemis minima Selys, 1879 is described and illustrated for the first time, based on reared specimens collected from Thailand. Selected larvae of Agrioncnemis Selys, 1877 were matched with their adults by DNA barcoding. The mitochondrial COI gene (658 bp) of three species (A. minima, A. femina femina (Brauer, 1868), and A. pygmaea (Rambur, 1842)) occurring in Thailand was analysed to confirm the species identification and to determine the association between the larva and adult stages. The larva of A. minima can be distinguished from known species by the following combination of characteristics: 1) long simple setae on the antennomeres I and II, 2) protrusion of the male cerci as long as 0.5× the S10, and 3) tufts of spiniform setae on the lateral occiput margin and on the ventral view of the compound eyes. Comparisons to known larvae of Agriocnemis and those of some other subfamily Agriocnemidinae members are also provided.

The present paper includes description of one new species Conocephalus (Anisoptera) rentzi sp. nov. and some known species of genus Conocephalus Thunberg, 1815 from India. Brief diagnosis of genus and subgenus with a key to species of subgenus Anisoptera and morphometric ranges of all the species are provided. The distributional map and illustrations of all the described and reported species with SEM photography of stridulatory files of C. (Anisoptera) maculatus C. (Anisoptera) rentzi sp. nov. have also been included. All type specimens have been deposited for posterity in the Zoology Department, Aligarh Muslim University, India (ZDAMU).