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FIGURE 2 in Aphyosemion teugelsi (Cyprinodontiformes: Nothobranchiidae), a new species from a remote locality in the southern Democratic Republic of the Congo

FIGURE 2. Aphyosemion congicum, male, 39 km east of the Lufimi River, collection locality Z 82-17, F3 of the specimens collected in the wild, not preserved. Photographed by T. Woeltjes.

FIGURE 1 in Aphyosemion teugelsi (Cyprinodontiformes: Nothobranchiidae), a new species from a remote locality in the southern Democratic Republic of the Congo

FIGURE 1. Map showing the type locality of Aphyosemion teugelsi, sp. nov., and the distribution of other Aphyosemion species in the southern Congo basin.

FIGURE 3 in Aphyosemion teugelsi (Cyprinodontiformes: Nothobranchiidae), a new species from a remote locality in the southern Democratic Republic of the Congo

FIGURE 3. Aphyosemion cognatum, male, 11 km east of Kengé, Wamba River drainage, F1 of specimens collected by Radda, Pürzl & Hofmann, August 1982, not preserved. Photographed by T. Woeltjes.

FIGURE 5 in Aphyosemion teugelsi (Cyprinodontiformes: Nothobranchiidae), a new species from a remote locality in the southern Democratic Republic of the Congo

FIGURE 5. Aphyosemion teugelsi, sp. nov., above male, 20.3 mm SL, below female, 19.5 mm SL, MRAC 62054– 62057, paratypes.

FIGURE 6 in Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

FIGURE 6. Erimetopus brazzae (A. Milne-Edwards, 1886). Subadult male, CW 11 mm, from Kinganga, D. R. Congo (MCZ 67421). A. Carapace, dorsal view. B. thoracic sternum and pleon. C. G1 ventral view. D. G1 dorsal view. E. G2 ventral view. F. merus, carpus of right cheliped, dorsal view. Scale bar: 3.0 mm (A, B, F), 1.4 mm (C–E).

FIGURE 3. Potamonautes nheenae n in Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

FIGURE 3. Potamonautes nheenae n. sp. Holotype, adult male, CW 21.5 mm, from Ivindo, Gabon (SMF 7897). A. G1 ventral view. B. G1 dorsal view. C. G1 ventral view terminal article. D. G1 dorsal view terminal article. E. G2 ventral view. Scale bar: 1.3 mm (A, B, E), 0.43 mm (C, D).

FIGURE 1. Potamonautes nheenae n in Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

FIGURE 1. Potamonautes nheenae n. sp. Holotype, adult male, CW 21.5 mm, from Ivindo, Gabon (SMF 7897). Entire animal. A. Dorsal view. B. Ventral view. Scale bar: 7.8 mm (A), 1 mm (B).

FIGURE 5. Potamonautes nheenae n in Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

FIGURE 5. Potamonautes nheenae n. sp. Holotype, adult male, CW 21.5 mm, from Ivindo, Gabon (SMF 7897). A. G1 ventral view. B. G1 dorsal view. C. Superior view of terminal article. D. G2 ventral view. Scale bar: 1.05 mm (A–D).

FIGURE 2. Potamonautes nheenae n in Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

FIGURE 2. Potamonautes nheenae n. sp. Holotype, adult male, CW 21.5 mm, from Ivindo, Gabon (SMF 7897). A. Right cheliped, frontal view. B. Left cheliped, frontal view. C. Merus, carpus, fingers of left cheliped, dorsal view. D. Carapace frontal view. Scale bar: 6.5 mm (A, B), 1 mm (C), 5.7 mm (D).

FIGURE 4. Potamonautes nheenae n in Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

FIGURE 4. Potamonautes nheenae n. sp. Holotype, adult male, CW 21.5 mm, from Ivindo, Gabon (SMF 7897). A. Carapace, frontal view. B. Dorsal view. C. Pleon (abdomen). D. Thoracic sternum. E. Third maxilliped frontal view. F. Right cheliped, frontal view. G. Left cheliped, frontal view. Scale bar: 5.7 mm (A–G).

FIGURE 5 in The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium)

FIGURE 5. The entomologists behind the collection of Megachilidae specimen records at RMCA (Tervuren, Belgium).

FIGURE 6 in The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium)

FIGURE 6. The diversity of entomologists behind the collection of megachilid specimen records at RMCA (Tervuren, Belgium). We list here the inventory number corresponding to each photograph, as well as the names of the photographers, for the images kindly provided by the RMCA archives department. 1. Mrs. Lebrun and Vrydagh (left) and Mrs. Corbisier and Staner (right) (AP.0.0.29742; photo by P. Staner 1930); 2. Reverend Father Hyacinthe Vanderyst in Kisantu (AP.0.0.23368; photo by "Jesuit Order", 1910-1925); 3. Reverend Father Hyacinthe Vanderyst (R.P. Vanderyst) in Ipamu (AP.0.2.368; photo by R.P. Delaere, 1922); 4. Frans Guillaume Overlaet (AP.0.0.25895; photo G. Fr. De Witte, 1931); 5. Maurice Bequaert (HP.1950.7.37, photographer not identified, 1950); 6. Professor Theodore D. Cockerell and the pygmies chief Kasulo, who lived in the forest near Tshibinda in the Sud-Kivu Province (photo by Alice Mackie); 7. Gaston-François De Witte (left) and Hans Joseph Brédo (right) (HP.2011.62.20-221; photo G. Fr. De Witte, 1947); 8. Prince Léopold III of Belgium (left) and Mr Ghesquière (right) in front of the laboratory in Stanleyville (now Kisangani) (AP.0.0.25895; photo Ghesquière, 1925); 9. Charles Seydel alias "Bwana Bilulu" (HP.1953.21.8, photo E. Devroey, 1922); 10. Charles Seydel alias "Bwana Bilulu" (HP.2011.62.13-226, photo GastonFrançois De Witte, 1931); 11. Charles Seydel alias "Bwana Bilulu" (HP. 2011.62.5-145; photo Gaston-François De Witte, 1925); 12. Sheffield Airey Neave; 13. Hans Joseph Brédo on the right, Director of the International Locust Laboratory in Abercorn (Northern Rhodesia), welcomes Belgian personalities on an official visit to the Laboratory (2017.24.30; photo Infocongo, 1952). All rights reserved for photographs 1, 2, 3, 5, 8 and 9; photographs 4, 7, 10, 11 and 13 under Creative Commons license (CC-BY 4.0); photograph 6 after Cockerell (1932) and 12 ©National Portrait Gallery.

FIGURE 3. Top 4 in The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium)

FIGURE 3. Top 4 of the Megachilidae species represented by the highest number of specimens in the RMCA collection (Tervuren, Belgium). A. Gronoceras cinctum (Fabricius, 1781) (female at nest entrance) (n=1,270 specimens); B. Euaspis abdominalis (Fabricius, 1793) (female on Duranta erecta (Verbenaceae)) (n=394 specimens); C. Megachile rufipes (Fabricius, 1781) (male on Antigonon leptopus (Polygonaceae)) (n=390 specimens); D. Megachile bituberculata Ritsema, 1880 (female on Pueraria javanica (Fabaceae)) (n=281). All photographs by NJ Vereecken.

FIGURE 2 in The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium)

FIGURE 2. Linear models between collection abundance and associated species richness in (i) the six historical provinces in DRC (top row), (ii) the 26 present-day provinces (middle row), and (iii) the 10 known phytogeographical districts (bottom row) defined within the country. Some administrative/natural units deviate from the overall attributable values. The Province Equateur deviates from the number of collections for species richness close to the mean.

FIGURE 4 in The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium)

FIGURE 4. Taxonomic and temporal patterns of Megachilidae specimen records in the RMCA collection (Tervuren, Belgium). A. Rank abundance plot and associated data for the 10 most frequently collected species showing that the top 8 species make up to 50% of the dataset. The distribution of species along the curve shows a very long "tail", implying that many of the species curated are only represented by a low or a very low number of species. At the extreme, 26 species of Megachilidae were represented in the RMCA collections only as type specimens (holotype and paratype); B. Specimen accumulation curve through time (1905-1978) for the seven groups of species in the family Megachilidae showing that the best represented groups are Megachile sensu lato, Gronoceras, Lithurgini and Anthidiini (by decreasing order of magnitude). It is noteworthy that Megachile sensu lato has been regularly collected and in higher numbers during the period 1905-1920, and that all the above groups were collected in larger numbers during the decade 1930-40 compared to other groups of Megachilidae.

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Pfennig of the German Democratic Republic

Денежная единица: пфенниг. Номинал: 10. Год выпуска: 1971 год. Материал: алюминий. Гурт гладкий. Диаметр: 21 мм. Герб ГДР. Надпись: DEUTSCHE DEMOKRATISCHE REPUBLIK/Monetary unit: pfennig. Denomination: 10. Year of issue: 1971. Material: aluminum. The edge is smooth. Diameter: 21 mm. Coat of arms of the GDR. Caption: DEUTSCHE DEMOKRATISCHE REPUBLIK. A random find in the vicinity of Sterlitamak (Russia, Republic of Bashkortostan). Source: Objaverse 1.0 / Sketchfab

FIGURE 7 in Two new species of Machaerotidae from the Democratic Republic of the Congo, with some additional records of the family (Hemiptera: Cercopoidea)

FIGURE 7. Labramachaerota luilaka sp. n. terminalia, A) aedeagus in posterior view, B) aedeagus in lateral view, C) paramere in lateral view.

FIGURE 3. Enderleinia bispina terminalia, A in Two new species of Machaerotidae from the Democratic Republic of the Congo, with some additional records of the family (Hemiptera: Cercopoidea)

FIGURE 3. Enderleinia bispina terminalia, A) aedeagus in posterior view, B) aedeagus in lateral view, C) paramere in lateral view.

FIGURE 6 in Two new species of Machaerotidae from the Democratic Republic of the Congo, with some additional records of the family (Hemiptera: Cercopoidea)

FIGURE 6. Labramachaerota luilaka sp. n. terminalia, A) pygofer with subgenital plates in lateral view, B) dorsoposterior appendage of pygofer in posterolateral view, C) pygofer with subgenital plates in posterior view.

FIGURE 10 in Two new species of Machaerotidae from the Democratic Republic of the Congo, with some additional records of the family (Hemiptera: Cercopoidea)

FIGURE 10. Labramachaerota salonga sp. n. terminalia, A) aedeagus in posterior view, B) aedeagus in lateral view, C) paramere in lateral view.