Tragardhus, Koch, 1956

Kamiński, Marcin Jan, 2017, Afrotropical Melambiina: revision of the genus Tragardhus Koch, 1956 and redescription of Pseudemmallus Koch, 1956 (Tenebrionidae: Pedinini), Zootaxa 4347 (1), pp. 71-93 : 73

Key to the subgenera of Tragardhus

1. Body length: 4.5–6.0 mm. Center of pronotal disc with two pairs of rounded carinae ( Fig. 2A ). Epipleuron dilated apically, with roundish alveola at the level of fourth ventrite ( Fig. 2C ). Abdomen with fine punctures. Fifth abdominal ventrite simple ( Fig. 2E ). Second lobe of coxites trapezoidal, much smaller in size than paraproct ( Fig. 5A )......... subgenus Tragardhus

-. Body length: 3.0– 4.5 mm. Pronotal disc simple, without rounded carinae ( Fig. 2B ). Epipleuron evenly narrowed towards apex, without any additional structures ( Fig. 1N ). Abdomen with coarse punctures. Fifth abdominal ventrite raised in apical third ( Fig. 2D ). Second lobe of coxites rounded laterally, nearly as large as paraproct ( Fig. 5B )......... subgenus Mitragardhus

Figures

FIGURE 1. Diagnostic characters of different biogeographic components of Melambiina. Aedeagal tegmen (A – C), spermatheca (D, E), head (F, G, L), protibia (H), 5 th abdominal ventrite (I, J) and elytra (K, M, N). Bermejoina aiunica Español, 1944 (E, H), Gridelliopus subsquamosus Koch, 1956 (K, L), Hanstroemium adelostomoide Koch, 1953 (G), Melambius barbarus (Erichson, 1841) (D), Melambius mideltensis Antoine, 1932 (B, J), Melasmana appenhageni Koch, 1948 (C), Oreomelasma oromii Español, 1975 (F), Peyerimhoffius plicatus (Lucas, 1846) (I), Silvestriellum alatum Koch, 1956 (A), Tragardhus ewae sp. nov. (N) and Zadenos delalandei (Mulsant & Rey, 1854) (M). Abbreviations: bc. — bursa copulatrix, spspermatheca, — sag—spermathecal accesory gland, ep—epipleuron, IX. and X in. — elytral intervals 9 and 10.

FIGURE 2. Diagnostic characters proposed for Mitragardhus, Tragardhus and chosen species. Pronotal disc (A, B, C), epipleuron (C), 5 th abdominal ventrite (D, E), elytral disc (F, H, I), metatibia (G) and protibia (J). Tragardhus (Tragardhus) biapicalis Koch, 1956 (I), T. (T.) glandipleurum Koch, 1956 (A, E, H, J), T. (Mitragardhus) ewae sp. nov. (B, F) and T. (M.) nodosus Koch, 1956 (D, G). White arrow indicates a characteristic apex of the metatibia of T. (M.) nodosus.

FIGURE 5. Male and female terminalia of Tragardhus and Pseudemmallus. Ovipositor (A – D), genital tubes (C, D), aedeagal tegmen (E, G) and penis (F). Tragardhus (Tragardhus) glandipleurum Koch, 1956 (A, C – F), T. (Mitragardhus) nodosus (B) and Pseudemmallus aspericollis (G). Abbreviations: C 1 – C 3 — subsequent lobes of coxites, val—valvifer, ov—oviduct, bcbursa copulatrix, sp—spermatheca, par—paraproct, p—penis, cl—clavae.