Apatenia quadristigma Frieser, 1981

(Figs 23, 32)

Apatenia quadristigma Frieser, 1981: 253, 251: figs 12–13 (12–male antenna, 13–female antenna). Trýzna & Baňař 2013: 507 (redescription), 508: figs 5–6 (5–female allotype, dorsal view, 6–head, dorsal view), 509: figs 7, 9, 12 (7–head, 9–right antenna, 12–dorsal pronotal carina, all drawings)

Type material. Paratype (female): East MADAGASCAR, TOAMASINA PROvINCE: ‘COLL. MUS. TERVUREN / Madagascar: Mananara / X. 1963 / J. Vadon [p] // Allotype [p, red label] // Apatenia / quadristigma sp. n. / Allotypus [h] / det. R. Frieser [p] 1980 [h]’ (ZSMC).

Other material. 4 females. 1 female: N Madagascar, Ankarana N.P., circuit Benavony, S 12°57´30.8´´, E 49°07´10.5´´, 128 m, 21.-26.i.2016, M. Trýzna leg. (Fig. 23, MTDC) ; 1 female: Madagascar, Ankarana, C. J. Vadon ! // Museum Paris, Madagascar, Coll. J. Vadon [typical blue acquisition label of MNHN] (MNHN) ; 1 female: Madagascar, Fenerive, E. Perrot (MNHN) ; 1 female: Madagascar, Fénerive, Perrot Fréres, 1 er Trim. 1896 // Museum Paris, 1952, Coll. R. Oberthür [typical blue acquisition label of MNHN] (MNHN) .

Diagnosis. Pronotum monochromatic blue-grey. Dorsal transverse carina of pronotum sub-basal, i.e. approached to posterior margin of pronotum. Elytra with basal elevation, blue-grey, disc of elytra with horseshoe-shaped black stripe, which is open in basal part of elytra. In basal half of elytra inside this horseshoe-shaped stripe, two pairs of brilliant white stripes are located, one transverse pair anteriorly of sub-basal tubercles in basal area, and the second oblique pair posteriorly of tubercles in sub-basal area. Size of the body 4.8–6.0 mm.

Distribution and biology. This appears to be a rare species, which was described based on two specimens: holotype (male) from Fampanambo, and allotype (female) from Mananara, both in north Madagascar. We know of only four other specimens: two from Fénerive (= Fenoarivo) located on the east coast, and two from Ankarana National Park on north part of Madagascar. The specific habitat requirement of species remains unknown.