Micrambe brevitarsis Bruce, 1963

Otero, Jose Carlos & Pereira, Jose Manuel, 2017, Records of the genus Micrambe Thomson, 1863 (Coleoptera, Cryptophagidae) from Madagascar and Reunion Island, African Invertebrates 58 (1), pp. 49-64 : 51-53

Micrambe brevitarsis Bruce, 1963 Figures 6-8

Micrambe brevitarsis Bruce, 1963; Rev. Zool. Bot. Afr., 67: 216

Material examined.

Holotype ♂. (red card)/coll. Mus. Congo; Madagascar: forêt de Fito; ex coll. D. Breuning (white card)/Typus (red card)/ Micrambe brevitarsis n. sp; N. Bruce det. (white card) (RMCA).

Redescription.

Length: 1.9 mm. Body elongated, oval and convex. Yellowish grey-brown. Simple pubescence flattened and long (L = 0.036-0.040 mm); some erected bristles on the margins and end of the elytra. Metathoracic wings fully developed.

Head slightly transverse (WL = 1.6-1.7). Punctation pronounced and dense distance between punctures shorter than puncture diameter ( Ø = 0.005 mm). Eyes normal, sub-hemispherical, little protruding (E = 0.7-0.8) with larger facets ( Ø = 0.0060-0.010 mm) than head punctures. Long antennae (Fig. 7) (L = 0.796 mm) surpassing the pronotum base. 1st antennomere thick, cylindrical; 2nd narrower and almost as long as 1st; 4th, 6th and 7th identical and 1.5 times shorter than 2nd; 8th 1.3 times shorter than 7th; 9th and 10th strongly transverse; 11th 1.7 times longer than 9th.

Pronotum (Figs 6, 8) convex and moderately transverse (WL = 1.6-1.7). Anterior margin convex. Large callosity (1/3 of the side length), not protruding from the lateral margin of the pronotum. Callosity face visible from above. Gland pore visible. Callosity forming an obtuse angle posteriorad and a 25°-26°angle with the body axis. Lateral margins more or less parallel in the anterior 2/3 and converging in the basal third. Posterior angles obtuse. Basal groove visible. Soft punctation; distance between punctures shorter than puncture diameter ( Ø = 0.006-0.010 mm).

Elytra 2.4 times longer than pronotum. Punctation finer and more scattered than that of the pronotum; distance between punctures greater than puncture diameter ( Ø = 0.006-0.010 mm). 4th segment of hind tarsi of males smaller than in individuals of other species.

Aedeagus (in poor condition, broken and not figured) apically extended. Endophalic orifice visible. Parameres absent.

Biology.

Unknown.

Distribution.

Madagascar ( Bruce 1963).