Stiretrus decemguttatus (Lepeletier & Serville, 1828)

Lupoli, Roland, 2019, First catalogue of the Asopinae (Hemiptera, Pentatomidae) from French Guiana, Zootaxa 4668 (1), pp. 76-88 : 82

Stiretrus decemguttatus (Lepeletier & Serville, 1828)

( Fig. 3A, B, C )

Examined material (n: 14). FRENCH GUIANA.—No locality mentioned, 1♀ 3ϐ 1899 Oberthür coll. Bar (coll. MNHN).— Kourou, 3ϐ 1♀ 20-25.IX.1979, J. Carayon leg. ϐ identified as Stiretrus sp., ♀ as Oplomus sp. (coll. MNHN).— Macouria, 4♀ ϐ 22.II, 11.III, 31.III.2015, 7.IV.2015, F. Caillot leg. (photo F. Caillot).— Matoury, ♀ ϐ 19.IV.2015, F. Caillot leg. (photo F. Caillot) with larvae.— Montsinéry-Tonnegrande, ♀ ϐ 3.III.2015, F. Cail- lot leg. (photo F. Caillot). In Macouria and Matoury, it was observed predating larvae of the following Chrysomelidae (Coleoptera) belonging to the Cassidinae subfamily: Stolas discoides (L., 1758), Zatrephina lineata (F., 1787), and Cyrtonota lateralis (L., 1758).

Literature data. Kourou, ♀ ϐ X.1979 identified as Stiretrus sp., eating eggs of Chelymorpha cribraria ( Coleoptera Cassidinae ) on Ipomoea stolonifera (J. Carayon in Remillet, 1988) .

Distribution. Argentina, Bolivia, Brazil, French Guiana, Paraguay, Peru, Surinam, Uruguay.

Comments. New record of this species in French Guiana. In northeastern Brazil (Para & Maranhão states), Paleari (2013) also observed S. decemguttatus predating Z. lineata larvae, as well as Botanochara sedecimpustulata (F., 1781) larvae, two species of leaf-eaters Coleoptera Cassidinae on Ipomoea asarifolia (Convolvulaceae) . In Surinam, Doesburg (1970) observed S. decemguttatus predating on larvae and pupae of the Chrysomelidae species Paraselenis flava (L., 1758) living on Ipomoea .

This species seems to attack specifically the eggs, larvae and pupae of Cassidinae belonging to the Mesomphaliini tribe, living on Convolvulaceae . It is likely that the variable aposematic dorsal patterns of S. decemguttatus adults and larvae are associated with the recovery of toxic defense molecules taken from eggs, larvae or pupae of Cassidinae . S. decemguttatus was only collected from the coastal zone of French Guiana. It was not found in primary forest, which is probably related to the distribution of its preys and/or its host plants preys.

Figures

FIGURE 3. Habitus of Asopinae from French Guiana. A.—Stiretrus decemguttatus (Lepeletier & Serville, 1828).—Kourou, ♀ 20-25.IX. 1979, J. Carayon leg. (coll. MNHN). B.—Stiretrus decemguttatus (Lepeletier & Serville, 1828).—Kourou, ϐ 20- 25.IX. 1979, J. Carayon leg. (coll. MNHN). C.—Stiretrus decemguttatus (Lepeletier & Serville, 1828).—Macouria, ♀ϐ 11. III.2015, F. Caillot leg. D.—Stiretrus loratus Germar, 1839.—Cayenne, ♀ 1898, Noualhier leg. (coll. MNHN). E.—Tylospilus cloelia (Stål, 1862).—Saül, banana trap, ♀ 4.I.2011, SEAG leg. (coll. RL). F.—Tylospilus peruvianus (Horváth, 1911). Régina, Piste Bélizon pK32, UV-MV light trap, ♀ 16.X.2004, R. Lupoli leg. (coll. RL). G.—Tyrannocoris jole (Stål, 1862).—Cayenne, Montabo, 15.IX.1978, M. Duranton leg. (coll. MNHN). H.—Tyrannocoris nigriceps Thomas, 1992.—Ouanary, Montagne Bruyère, ♀ 17.VIII.2001, Hydreco leg. (coll. RL). I—Tyrannocoris rex Thomas, 1992.—Maripasoula, Borne 1, UV-MV light trap, ♀ 25.IX.2006, J.P. Champenois leg. (coll. RL). Photos R. Lupoli (except S. decemguttatus photo F. Caillot). Scale = 5 mm.