Cylindrogaster sp. 2

Kamimura, Yoshitaka & Ferreira, Rodrigo L., 2017, Earwigs from Brazilian caves, with notes on the taxonomic and nomenclatural problems of the Dermaptera (Insecta), ZooKeys 713, pp. 25-52 : 33

Cylindrogaster sp. 2 Figs 18-21

Material examined.

1 ♀, Cave N 5SM1-017, Parauapebas, Pará, 17.ii.2011, CARSTE leg. ( ISLA 15558) .

Association with caves.

The specimen was found in the cave N5SM1-017 (also known as GEM-1190 cave). This cave consists of a shallow iron ore cave (14 m horizontal projection), located in Carajás region ( Pará state, Brazil). The surrounding vegetation is composed of Amazon forest with a dense canopy. The cave has only one wide and shaded entrance, with the presence of vegetation (lichens, moss, and ferns). Furthermore, it does not present an aphotic zone, being lightened throughout its whole extension. The litter is abundant near the entrance zone and sparse in the rest of the cavity. Several caves were sampled in this region, and as a single specimen was found, it is likely that this species is accidental or seeks only temporarily shelter in caves.

Description and remarks.

The genital structures of this species are essentially similar to those of Cylindrogaster sp. 1, but the spermatheca was missing likely due to incorrect dissection. Cylindrogaster sp. 2 differs from Cylindrogaster sp. 1 in having triangular shaped gl9 (Fig. 21 ) vs. finger-like in Cylindrogaster sp. 1 (Figs 15 , 16 ), as well as a much smaller body size (Fig. 18 vs. 12). The wing and mesothoracic structures of Cylindrogaster sp. 2 were basically the same as those of Cylindrogaster sp. 1. Refer to Figures 19 and 20 for images of the spiny ridges and fustis, respectively.

Figures

Figures 12 - 22. 12 - 17 Cylindrogaster sp. 1 (female): habitus (12), spiny ridges (indicated by the blue arrowheads) on the mesothorax (13), wing base of the left hindwing (14), and genital regions (15 - 17) 18 - 21 Cylindrogaster sp. 2 (female): habitus (18), spiny ridges (indicated by the blue arrowheads) on the mesothorax (19), fustis of the left hindwing (20), and genital regions (21) 22 Cylindrogaster sp. (nymph): detail of cercus. Scale bars 3 mm for Figs 12, 18; 0.5 mm for Figs 13 - 15, 19 - 22; 200 μm for Figs 16, 17.