Dimorphodes, Westwood, 1859

Hennemann, Frank H., 2021, Stick insects of Sulawesi, Peleng and the Sula Islands, Indonesia- a review including checklists of species and descriptions of new taxa (Insecta: Phasmatodea), Zootaxa 5073 (1), pp. 1-189 : 95

Keys to the Sulawesian species of Dimorphodes

♀♀

1. Body length <60.0 mm; pronotum and abdominal terga without paired anterior spines.............................. 2

- Body length> 60.0 mm; pronotum spinose and abdominal terga III–V with a prominent pair of spines near anterior margin. 3

2. Very small (body length <40.0 mm) and stocky; mesonotum 2x longer than wide............................ epidicus

- Larger (body length> 45.0 mm) and slender species; mesonotum 3x longer than wide..................... elegans n. sp.

3. Very large (body length> 90.0 mm) and slender species; mesonotum 3x longer than wide and without distinct median and lateral spines; no distinct anterior pair of spines on abdominal tergum II ( Fig. 39E )............................ sarasini

- Smaller (body length <70.0 mm) and more stocky species; mesonotum 2.5x longer than wide and all over armed with prominent spines; abdominal tergum II with a distinct pair of spines near anterior margin.......................... celebensis

♂♂ *

1. Body length> 50.0 mm; tegmina and alae present; pronotum and abdominal terga III–V with prominent paired spines..... 2

- Smaller (body length <35.0 mm); apterous; pronotum and abdominal terga unarmed...................... elegans n. sp.

2. Alae vestigial and concealed by tegmina (length> 2.0 mm); abdominal tergum II with a very prominent anterior pair of spines....................................................................................... celebensis

- Alae developed, much longer than tegmina and reaching to abdominal tergum II ( Fig. 39C ); tergum II unarmed ( Fig. 39D )................................................................................................ sarasini

* ♂♂ of D. epidicus (Günther, 1935) are not known

Figures

FIGURE 39. Dimorphodes sarasini Redtenbacher, 1908 rev. stat.: A. Egg, dorsal view [coll. FH, No. 1318-E]; B. Egg, lateral view [coll. FH, No. 1318-E]; C. ♂ (LT of synonym D. bellicosus Redtenbacher, 1908), dorsal view [NHMW, No. 728]; D. ♂ (LT of synonym D. bellicosus Redtenbacher, 1908), lateral view [NHMW, No. 728]; E. ♀ from Luwu, dorsal view [MNHU]; F. Terminal abdominal segments of ♀ (HT) in lateral view [NHMW, No. 732]; G. Terminal abdominal segments of ♂ (LT of synonym D. bellicosus Redtenbacher, 1908) in lateral view [NHMW, No. 728]. (Figs. C–D, F–G © Paul D. Brock).