Monodius medius (Fairmaire, 1897)

Kaminski, Marcin Jan, 2014, A cladistically based reinterpretation of the taxonomy of two Afrotropical tenebrionid genera Ectateus Koch, 1956 and Selinus Mulsant & Rey, 1853 (Coleoptera, Tenebrionidae, Platynotina), ZooKeys 415, pp. 81-132 : 112-114

Monodius medius (Fairmaire, 1897) Figs 7, 23, 43, 56

Selinus medius Fairmaire, 1897: 122. - Gebien 1910: 278, 1938: 297; Iwan 2001b: 360, 2002a: 101, 2002b: 303.

Monodius medius (Fairmaire, 1897). - Koch 1956: 185; Girard 1975: 342.

Selinus angulatipes Gebien, 1921: 21. - Gebien 1938: 297; Koch 1956: 185 (syn); Kulzer 1963: 425.

Studied material.

Holotype, male (MNHN): “Type”, “Muséum Paris, Paris, Collection Leon Fairmaire, 1906", "Selinus medius Fm guinea, Acut. det.". Other material: 6 males and 2 females (RBINS): " Selinus , angulatipes, det. H. Gebien 1913, n. sp.", “Type”, “Asenté Akem, (Ashanti), Guineé” (Syntypes of Selinus angulatipes Gebien, 1921), 11 males and 6 females (MNHN): "Lamto, Pacobo, V. 1968", “Côte d’Ivoire, CL. Girard Col.", male (MRAC): "Coll. Mus. Tervuren, Côte d’Ivoire, Kossou 18.2.1975, R. Jocqué”, 2 males (MRAC): "Coll. Mus. Tervuren, Côte d’Ivoire: Bouaké, VII-, 1977, P. M. Elsen", male and female (MRAC): "Coll. Mus. Tervuren, Togo: Missahoué 650 m., VI.1963, Mme Y. Schach".

Redescription.

Habitus as in Fig. 56. Body length = 12.0-15.0 mm. Elytra wider and longer than pronotum (width ratio elytra / pronotum = 1.2-1.3; length ratio elytra / the middle of pronotum = 2.2-2.4).

Dorsal side of head dull, with fine punctures (the intervals between the punctures are smaller than the diameter of the puncture). Frontoclypeal suture fine. Clypeal emargination relatively shallow (clypeal emargination width / depth ratio = 10.0-11.5). Mentum with median part wide. Submentum with short base. Maxillary palp not widened (width of maxillary palp / length of 3rd antennomere = 1.1-1.2). Length of antennae greater than pronotal length (ratio antenna / pronotum from tip of anterior pronotal angle to tip of posterior pronotal angle = 1.2-1.3). 3rd antennomere relatively long (length ratio of antennomere 3rd / 2nd = 2.8-2.9).

Pronotal disc transverse (middle of pronotum length / width ratio = 0.5-0.6); dull, with fine punctures (the intervals between the punctures are greater than the 2 diameters of the puncture). Anterior pronotal angles sharp and strongly protruding towards front. Lateral margins of pronotal disc rounded. Apophyseal and basal depressions on pronotal disc present; apophyseal depressions trapezoidal. Pronotal hypomera dull, without punctures.

Elytra oblong (elytra length / width ratio = 1.1-1.2). Elytral striae with fine punctures, impressed on the whole length. Elytral intervals dull, non-convex, with fine punctures (the intervals between the punctures are greater than the 4 diameters of the puncture). Elytral base slightly sinusoidal. Elytral humeri slightly protruding laterad. Wings absent. Scutellum rounded.

Intercoxal process not protruding towards mesoventrite. Metaventrite reduced (length ratio cavity of hind coxa / metaventrite between the insertions of mid and hind coxae ca. 2). In both sexes abdominal process without tubercles, relatively narrow (process of 1st abdominal ventrite / process of metaventrite = 2.1-2.3). 5th abdominal ventrite without bordering; punctures fine (the intervals between the punctures are greater than the 3 diameters of the puncture).

Male legs. Protarsi slightly widened. Protibiae as in Monodius convexipennis . Mesotibiae with a large denticle at the apex. Metafemorae with an hair fringe. Female legs. Protarsi slightly widened. Other leg parts simple.

Male genitalia. Similar as in Monodius malaisei . Female genitalia. Paraproct equal to coxites. Bursa copulatrix with two sacs (Fig. 23). Spermatheca with narrow ducts.

Distribution.

This species has been collected in the following ecoregions of West Africa (Republic of Ghana, Ivory Coast): Eastern Guinean forests, Guinean forest-savanna mosaic (Fig. 43).