Macroxenus caingangensis (Schubart, 1944)

Monographis caingangensis Schubart, 1944: 331, 332, figs 4, 5.

TYPE MATERIAL. — Brazil. Oriental part of plateau de São Paulo, Mun. Pirassununga, Mogi-guassú, Sta. Rita, Pôrto Ferreira, syntypes (number of syntypes not mentionned in the original description) ( Musée de Zoologie de São Paulo; after Condé 1971).

This species has been redescribed by Condé & Massoud (1974) based on the following material: Brazil. Rio de Janeiro Prov., Restinga de Jacarapagua, 2 ad. ♂, 5 ad. ♀♀, 1 juvenile with 10 pairs of legs.

The species M. rubromarginatus, from North Africa, and M. caingangensis, from South America, are very similar. The following material was examined to determine the morphological characters allowing their separation.

MATERIAL EXAMINED. — Macroxenus rubromarginatus: Maroc, Ifrane (alt. 1650 m), 2 ad. ♂♂ (MNHN) (Condé 1954). New material: Malte. Gozo, Kantura, 15.II.1992, leg. D. Mifsud, 1 ad. ♂ (ZMUC). — Portugal, Praia de Lourenço, Val de Parra, west of Albufeira, Algarve, coastal cliffs, 29.V.2004, A. P. Fowles coll., D. Kime leg., 1 ad. ♀ (MNHN).

Macroxenus caingangensi s: Brazil. Rio Janeiro Province, Restinga de Jacarapagua, 13.V.1959, 1 ad. ♀, 1 ad. ♂ (MNHN).

New material: Brazil. Serra of triunfo, Nova Olinda, Cearà, 25.I.2004, P. Selden leg., 1 ad. ♀, 1 ad. ♂ (MNHN).

Venezuela. Carácas, Rio Naùacho, 13.VII.1891, Meinert, 1 ♀ with 12 pl. (MNHN).

REMARKS

Macroxenus rubromarginatus and M. caingangensis are very similar. Nevertheless, they differ in the shape of the antennal basiconica sensilla (Fig. 10): these sensilla are thicker in M. rubromarginatus (Fig. 10 A-E) than in M. caingangensis (Fig. 10 F-H), i.e. the ratio length/diameter is higher in M. caingangensis .