Guanchia bituberculata ( Brindle, 1966 )

Kočárek, Petr, 2014, Earwigs (Dermaptera) of Socotra Island: checklist, distribution, and description of a new genus and four new species, Acta Entomologica Musei Nationalis Pragae 54, pp. 1-21 : 14-16

Guanchia bituberculata ( Brindle, 1966) stat. restit.

( Figs 24–26 )

Anechura bituberculata Brindle, 1966: 43 .

Forficula bituberculata: BRINDLE (1973: 261) .

Guanchia bituberculata: STEINMANN (1993: 560) .

Anechura sokotrana: HAAS et al. (2004: 413) .

Type locality. Congo [= Democratic Republic of the Congo], Kivu.

Type material. HOLOTYPE: J, ‘ HOLOTYPUS // I. R.S.A.C.-MUS. CONGO / Kivu: Terr. Uvira, Ht / Luvubu, 2750 m. (humus) / N. Leleup V-1954 // Anechura / bituberculata Brindle / det. A. Brindle / holotype // Type // Digitised by / F. Haas for / SYNTHESIS / Aug. 06 // MRAC ENT 000017410‘ ( MRAC). PARATYPES: 1 ♀, ‘ ALLOTYPUS // I. R.S.A.C.-MUS. CONGO / Kivu: Terr. Uvira, Ht / Luvubu, 2750 m. (humus) / N. Leleup V-1954 // Allo / type // Anechura / bituberculata Brindle / det. A. Brindle / allotype // Digitised by / F. Haas for / SYNTHESIS / Aug. 06 // MRAC ENT 000017410‘ ( MRAC); 1 J, ‘ Paratypus // I. R.S.A.C.-MUS. CONGO / Kivu: Terr. Uvira, Ht / Luvubu, 2,750 m. (humus) / N. Leleup V-1954 // Para- / type // Anechura / bituberculata Brindle / det. A. Brindle / paratype // Digitised by / F. Haas for / SYNTHESIS / Aug. 06 // MRAC ENT 000017410‘ ( MRAC).

Comments. HAAS et al. (2004) synonymised Anechura bituberculata with A. sokotrana (currently Guanchia sokotrana ). Based on the comparison of the type material of Guanchia bituberculata with specimens of G. sokotrana (see above) and the detailed photographs of the male of G. sokotrana published by HAAS et al. (2004), these two species were recognised to be distinct. Therefore, G. bituberculata is removed from the synonymy and considered to be a valid species. These two species can be distinguished based on the following combination of characters: Guanchia sokotrana ( Figs 20–23 ): the legs, pronotum, abdomen and forceps are pubescent; the middle antennomeres are eight times longer than wide; the pronotum and tegmina are blackish brown, the pronotum has yellowish sides, each tegmen has a yellowish central spot; the pronotum is as long as it is wide; the ultimate tergite has two narrow conical tubercules, the distal end of the tergite between them is straight ( Fig. 22 ); the forceps are rounded, regularly tapering from the base to the tip; the male genitalia ( Fig. 23 ) have long parameres, 5.5–6.0 times longer than wide, regularly tapering to the tip. Guanchia bituberculata ( Figs 24–26 ): smooth, not a pubescent body; the middle antennomeres are 4–5 times longer than wide; the pronotum and tegmina are entirely reddish brown; the pronotum is wider than long; the ultimate tergite has two large conical tubercles with a weak concavity between them ( Fig. 25 ); the branches of the forceps are dilated and angled basally; the male genitalia are robust ( Fig. 26 ) with short parameres that are 3.0–3.5 times longer than wide, with a rounded tip.

Distribution. Democratic Republic of the Congo, Uganda ( BRINDLE 1973).

Figures

Figs 20–26. Guanchia sokotrana (Burr, 1905) comb. nov. (20–23) and Guanchia bituberculata (Brindle, 1966) stat. restit. (24–26). 20 – habitus of male, dorsal view; 21 – male sternal plates, ventral view; 22 – detail of the end of male ultimate tergite; 23 – male genitalia; 24 – habitus of male holotype, 25 – detail of the end of male ultimate tergite; 26 – male genitalia of holotype.