Pachyanthidium (Pachyanthidium) bouyssoui (Vachal, 1903) Material. Cabinet 110, Drawer 65 (27 ♀ and 12 ♂). D.R. CONGO —Bas-Uele • 1 ♂; Bambesa; 3.47, 25.72; 15 Sep. 1933; H.J. Brédo leg.; RMCA • 3 ♀; ibid; 25 Sep. 1934; H.J. Brédo leg.; RMCA • 1 ♀; ibid; 30 Oct. 1933; H.J. Brédo leg.; RMCA • 1 ♀; ibid; Dec. 1933; H.J. Brédo leg.; RMCA • 1 ♀; Uele: Bambesa; 3.47, 25.72; 10 Oct. 1933; J.V. Leroy leg.; RMCA.— Equateur • 1 ♂; Eala (Mbandaka); 0.05, 18.32; 16 Oct. 1936; G. Couteaux leg.; RMCA • 2 ♀; ibid; Apr. 1932; H.J. Brédo leg.; RMCA • 1 ♂; ibid; May 1932; H.J. Brédo leg.; RMCA • 1 ♀; ibid; Apr. 1932; A. Corbisier leg.; RMCA • 2 ♀; ibid; Jun. 1932; A. Corbisier leg.; RMCA • 6 ♂; ibid; Jun. 1932; A. Corbisier leg.; RMCA • 1 ♀; ibid; May 1935; J. Ghesquière leg.; RMCA • 1 ♀; ibid; Jul. 1932; J. Ghesquière leg.; RMCA • 1 ♀; Eala-Bokatola-Bikoro; 0.05, 18.32; Sep. / Oct. 1930; Dr. P. Staner leg.; RMCA.— Haut-Lomami • 1 ♀; PNU Gorge de la Petenge; -8.93, 27.20, alt. 1150 m; 19 Jun. 1947; Mis. G.F. de Witte leg.; RMCA.— Ituri • 1 ♀; Ituri: Bunia; 1.57, 30.25; 1938; P. Lefèvre leg.; RMCA.— Kasaï Central • 1 ♀; Lulua; -5.90, 22.42; 1919; Dr. Walker leg.; RMCA • 1 ♂; Luluabourg (Kananga); -5.90, 31.23; P. Callewaert leg.; RMCA.— Lualaba • 1 ♀; Lulua: Kapanga; -8.35, 22.57; 30 Nov. 1932; F.G. Overlaet leg.; RMCA.— Maï-Ndombe • 1 ♂; Bena Bendi (Oshwe); -4.30, 20.37; May 1915; R. Mayné leg.; RMCA • 2 ♀; Bomboma; -2.48, 18.88; 21 Jul. 1935; A. Bal leg.; RMCA.— Maniema • 1 ♀; Malela; -4.37, 26.13; 30 Feb. 1913; L. Burgeon leg.; RMCA.— Sankuru • 1 ♀; Sankuru: Komi; -3.38, 23.77; 13 Mar. 1930; J. Ghesquière leg.; RMCA.— Sud-Kivu • 1 ♀; Lolo; -2.27, 27.72; 23 May 1925; Dr. Rodhain leg.; RMCA.— Tanganyika • 1 ♂; Bassin Lukuga; -5.67, 26.92; Apr. / Jul. 1934; H. De Saeger leg.; RMCA.— Tshopo • 1 ♀; Ile Bertha; 0.55, 24.93; 18 Oct. 1910; Dr. J. Bequaert leg.; RMCA.— Tshuapa • 1 ♀; Tshuapa: Bokuma; -0.10, 18.68; Mar. 1952; Rév. P. Lootens leg.; RMCA.

Published as part of Nkulu, Alain Tshibungu, Pauly, Alain, Dorchin, Achik & Vereecken, Nicolas J., 2023, The Megachilidae (Hymenoptera, Apoidea, Apiformes) of the Democratic Republic of Congo curated at the Royal Museum for Central Africa (RMCA, Belgium), pp. 1-103 in Zootaxa 5392 (1) on page 72, DOI: 10.11646/zootaxa.5392.1.1, http://zenodo.org/record/10435063