Charisoma karschi karschi

Morris, Glenn K, Ingrisch, Sigfrid, Willemse, Fer, Willemse, Luc, De Luca, Paul A. & Klimas, Dita, 2025, Stridulation songs of some Tettigoniidae (Ensifera, Orthoptera) from Papua New Guinea, Zootaxa 5600 (1), pp. 1-81 : 22

Charisoma karschi karschi Bolivar, 1903

( Fig. 18A )

Specimens studied. Lectotype male (here designated): “N. Guinea, Biro , 1899”, “ Sattelberg , Huon Golf ”, “ Charisoma karschi ”; “ Gen. nov. Mecopodidarum ” ( MNCN).

Other specimens studied: 1 female (paralectotype): similar locality labels as lectotype ( MNCN), ( MNCN); 1 female (topotype): “ Sattelberg , Huon Golf, N. Guinea, Biro 1899” .

Systematics. Both syntypes have been studied by Dr. V. Llorente. The male has been selected as lectotype. Additional data for this specimen are as follows (V. Llorente in litt. Dec. 1997). Fastigium of vertex wide, medially sulcate, laterally folded, these folds extending anteriorly and convergently towards fastigium frontis, in frontal view forming a pair of triangular plates, separated from each other by distinct median sulcus ( Fig. 18A ). Mirror of right elytron large, longer than wide, elliptical with basal margin straight; fold of mirror narrow, extending slightly dorso-anteriorly over depressed mirror. Stridulatory file with shortest distance between most proximal and distal tooth 3.21 mm, greatest width of teeth in mid part 0.37 mm, number of teeth over 160, proximal teeth much closer set than distal ones, spacing widest in mid third with about 8–9 teeth per 0.25 mm.

Measurements. (In mm) (male lectotype): length of body 20.5; width of fastigium of vertex 1.6; diameter eye 1.13; length of pronotum 4.53; length elytron 17.8, max. width 7.3; length of mirror 4.71, width 3.25; length of hind femur 17.

Distribution. Known only from Sattelberg, Huon Golf, Morobe District, NE New Guinea. The record of a female from NW West Irian (C. Willemse 1933) should be confirmed by an associated male.

Stridulation. Unknown.

Figures

FIGURE 18. Compared fastigia of vertex Charisoma spp. (scale 1 mm):A) C. karschi karschi Bolivar, 1903 lectotype male; B) C. karschi ‘goggle eye’ ssp. nov. (Fer Willemse intended holotype male).