Doru luteipes (Scudder, 1876)

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 : 40

Doru luteipes (Scudder, 1876) Figs 43 , 44

Material examined.

1 ♀, Gruta do Vento cave , Pains, Minas Gerais, 12.x.2000, R. L. Ferreira leg. ( ISLA 495) - 1 ♀, Gruta Ze Geraldao cave , Pains, Minas Gerais, 10.iii.2009, R. A. Zampaulo leg. ( ISLA 534) .

Association with caves.

Doru luteipes is an extremely common species in Brazil ( Reis et al. 1988), being frequently associated with crops, especially corn. The few observed specimens were found from the Pains region, which is considered the speleological area with the highest concentration of caves in Brazil (and probably in South America). Although more than 300 caves have been examined in this area ( Zampaulo 2010), this species was found near the entrances of only two caves, suggesting that they are definitely accidental.

Remarks.

Only female samples of Doru , which are difficult to identify to the species level, were collected in this study. The external morphologies (Fig. 43 ) matched those of D. luteipes ( Scudder 1876; Brindle 1971d; Steinmann 1979; 1993). The females of D. luteipes are similar in appearance to Doru lineare (Eschscholtz, 1822) [ Brindle 1971d; Steinmann 1979, 1993: see also Sakai 1993, 1995 for proposal of a synonymy of this species with Doru taeniatum (Dohrn, 1862)]; however, the spermathecal morphologies, including the shape of the spermathecal capsule with seven constrictions (Fig. 44 : the spermathecal morphology was examined for the sample from Gruta do Vento cave), were the same as those described by Mariani (1994) for D. luteipes . According to Mariani (1994), the spermathecal capsule of D. lineare is shorter with fewer and weaker constrictions. This was confirmed in a female sample collected at Varzelândia, Minas Gerais, Brazil on 13.iii.2016 by Y.K., with conspecific males (Fig. 45 ). However, parthenogenesis has been reported for some Brazilian populations of D. lineare ( Cocco et al. 2013), suggesting possible polymorphisms in the spermathecal morphology. Thus, the identification of the samples is tentative.

Distribution.

Colombia, Surinam, Brazil, Peru, Bolivia, and Argentina.

Figures

Figures 36 - 45. 36 - 38 Paralabellula dorsalis (male): habitus (36), forceps (dorsolateral view) (37), and genitalia (38) 39 - 41 Paralabellula dorsalis (female): habitus (39), spermatheca and spiny area in the genitalia (40, 41). Repaired wound patches are indicated by the red arrowheads in Figs 40 and 41 42 Paralabellula dorsalis (male; a specimen from Colombia, det. A. Brindle; OMHH S. Sakai Collection, 31. iii. 2002 [01 - 25]): abdomen and forceps (dorsolateral view) 43 - 44 Doru luteipes (female): habitus (43), and spermatheca (44) 45 Doru lineare (female; coll. Y. Kamimura, at Varzelandia, Minas Gerais, Brazil, outside of caves on 13. iii. 2016): spermatheca. Scale bars 3 mm for Figs 36, 39, 42, 43; 0.5 mm for 37; 200 μm for Figs 38, 40, 41, 44, 45.