Phyllium ( Phyllium ) (Ph.)

Cumming, Royce T. & Teemsma, Sierra N., 2018, Phyllium (Phyllium) letiranti sp. nov. (Phasmida: Phylliidae) a new leaf insect from Peleng Island, Indonesia, Insecta Mundi 618, pp. 1-16 : 9

Keys to known Phyllium ( Phyllium) species of Sulawesi and Peleng islands

Key to known females

1. Alae developed: [celebicum species group]............. Ph. ( Ph.) celebicum de Haan, 1842 — Alae rudimentary: [siccifolium species group]........................................ 2

2. Antennae with 9 segments; pars stridens of antennomere III with 40–46 teeth; meso- and metacoxae with conspicuous black marking; interior lobe of the profemora with two prominent teeth with two–three small, minor teeth between or adjacent to them....................................................................... Ph. ( Ph.) mamasaense Grösser, 2008

— Antennae with 10 segments; pars stridens of antennomere III with 35 teeth; meso- and metacoxae the same color as the rest of the legs, no markings; interior lobe of the profemora with four prominent teeth and a smaller minor tooth proximally............................................................. Ph. ( Ph.) letiranti Cumming and Teemsma , n. sp.

Key to known males*

1. Exterior lobe of the profemora a greater width than the interior lobe: [celebicum species

group]........................................ Ph. ( Ph.) celebicum de Haan, 1842 — Exterior lobe of the profemora thinner than exterior lobe: [siccifolium species group]

............................... Ph. ( Ph.) letiranti Cumming and Teemsma , n. sp. *Male Ph. ( Ph.) mamasaense Grösser, 2008 currently unknown.

Key to known eggs

1. Operculum flat; pinnae long on the margin of operculum and posterior carinae of the capsule: [siccifolium species-group]..................................................... 2

— Operculum conically raised; pinnae short, spread throughout the capsule and operculum with a similar height throughout: [celebicum species group] Ph. ( Ph.) celebicum de Haan, 1842

2. Lateral surface with short pinnae, notably shorter than the pinnae of the posterior and anterior ends.......................... Ph. ( Ph.) letiranti Cumming and Teemsma , n. sp.

— Lateral surface with two rows of long pinnae, of a similar length to the pinnae of the posterior and anterior ends............................ Ph. ( Ph.) mamasaense Grösser, 2008