Lamellitettigodes novaeguineae, Tumbrinck, Josef, 2019

Tumbrinck, Josef, 2019, Taxonomic and biogeographic revision of the genus Lamellitettigodes (Orthoptera: Tetrigidae) with description of two new species and additional notes on Lamellitettix, Probolotettix, and Scelimena, Journal of Orthoptera Research 28 (2), pp. 167-180 : 175

Lamellitettigodes novaeguineae sp. nov. Plates 2F, G , 4N, O , 5V, W

Material examined. -

HT Lamellitettigodes novaeguineae : ♀, Papua New Guinea, Gulf Prov., Lakekamu Basin, Ivimka Res. Station (Malaise Trap), 7°44'S, 146°30'E, 120 m, 4.-6.III.2000, leg. T. A. Sears, BMEC.

Type material. -

PTs Lamellitettigodes novaeguineae : ♂, ♀ (1/12+2/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, (M[alaise]T[rap]), 7°44'S, 146°30'E, 120 m, 4.-6.III.2000, leg. T. A. Sears, BMEC (deposited in ZFMK); 3♀♀ (3/12-5/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, 7°44'S, 146°30'E, 120 m, 5.III.2000, leg. T. A. Sears, BMEC; ♀ (6/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, (M[alaise]T[rap]), 7°44'S, 146°30'E, 120 m, 19.-23.IV.2000, leg. T. A. Sears, BMEC (deposited in BMNH); ♀ (7/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, 7°44'S, 146°30'E, 120 m, 15.-20.IV.2000, leg. T. A. Sears, BMEC (deposited in ZMHU); ♀ (8/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, (M[alaise]T[rap]), 7°44'S, 146°30'E, 120 m, 18.IV.2000, leg. T. A. Sears, BMEC (deposited in RMNH); ♂ (9/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, 7°44'S, 146°30'E, 120 m, 18.IV.2000, leg. T. A. Sears & binatung brigade, BMEC (deposited in RMNH); ♂ (10/12), Papua New Guinea, Gulf [Prov.], Lakekamu Basin, Ivimka Res. Station, (M[alaise]T[rap]), 7°44'S, 146°30'E, 120 m, 26.III.2000, leg. T. A. Sears & binatung brigade, BMEC; 2♀♀ (11/12+12/12), Papua New Guinea, Fly River, Kiunga, 35 m, VIII.1969, leg. J. & M. Sedlacek, BPBM.

Diagnosis. -

The species is easily recognizable by the raised median carina with broad depression between the shoulders. This depression clearly distinguishes it from L. cultratus . It is also slightly raised in Chinese L. karwinkeli but does not reach the same height and is not lamellated. As a further feature, the fastigium tip is only slightly visible in front of the eyes.

Description. -

Body of moderate size and slender. Head and pronotum smooth. Head and eye in lateral view weakly elevated above the pronotal discus. Dorsal margin of antennal groove slightly above the ventral margin of eye. Eyes small and in lateral view blunt and indistinctly conoidal. Antenna filiform, 14-segmented in male (including scapus and pedicel), while 15-segmented in female, 1.5-2.0 times longer than fore femur. Fastigium of vertex in dorsal view slightly wider than one eye. Fastigium in frontal view between the eyes slightly depressed. Fastigium in dorsal view with well-developed medial and lateral carinae and fossulae. Lateral carina clearly elevated, but in lateral view as high as the dorsal margin of eyes, short, not converging towards the front, bending over at nearly right angles to the medial carina. Transverse carina in dorsal view straight. Frontal costa and facial carina in lateral view minimally visible in front of eye. Tip of fastigium and frontal costa in lateral view slightly, but still clearly, protuberant. Bifurcation of frontal costa into facial carinae between dorsal margin of lateral ocelli and transverse carina, close to transverse carina by less than one diameter of ocellus. Facial carinae in lateral view clearly concave in front of eye and slightly convex in front of antenna. Last segments of maxillary palp not widened. Anterior margin of the pronotum truncated. Pronotum slightly widened between shoulders. Clearly keeled prozonal carinae converging backwards. Median carina distinctly lamellate from anterior margin of the pronotum to the end of tegmen, with a broad depression between shoulders. Interhumeral carinae absent. Internal lateral carinae weak. Pronotum behind shoulders weakly depressed on both sides of median carina, with large black spots like a broad black band (posthumeral). Lateral lobes broadly rounded, more or less close to body. Tegmen almost as long as the fore femur, rather broad, at the end broadly rounded. Macropterous and macropronotal. Alae clearly exceed the pronotum apex. Fore and middle femora short and widened, with wavy margins. Hind femora with very small antegenicular and especially genicular teeth and with some sharply tuberculated raised lobes on the middle outer surface. Posterior tibia distally not or weakly widened, with a few small spines on upper edges. First segment of the hind tarsus not longer than third segment. Pulvilli acute.

Measurements. -

(in mm) HT: Pronotum length 12.87; pronotum lobe width 3.10; pronotum height 1.85; vertex width 0.52; eye width 0.45; tegmen length 1.50; hind wing length 10.79; postfemur length 4.68; postfemur width 1.45.

3 PT♂♂: Pronotum length 9.88-10.40, average 10.18; pronotum lobe width 2.35-2.45, average 2.40; pronotum height 1.3-1.55, average 1.42; vertex width 0.43-0.43, average 0.43; eye width 0.39-0.43, average 0.41; tegmen length 1.20-1.25, average 1.23; hind wing length 8.97-9.75, average 9.45; postfemur length 4.00-4.10, average 4.05; postfemur width 1.15-1.20, average 1.16.

9 PT♀♀+HT: Pronotum length 10.27-12.74, average 11.62; pronotum lobe width 2.75-3.10, average 2.96; pronotum height 1.65-1.90, average 1.82; vertex width 0.43-0.52, average 0.49; eye width 0.41-0.45, average 0.43; tegmen length 1.30-1.65, average 1.51; hind wing length 9.36-11.96, average 10.88; postfemur length 4.30-4.75, average 4.55; postfemur width 1.30-1.50, average 1.38.

Pictures of HT and PT are available in higher resolution in OSF ( Cigliano et al. 2019).

Distribution. -

The species is only known from lowlands in the South of New Guinea (surroundings of Fly River and Lakekamu River).

Etymology. -

The species is named after the island of New Guinea (Nova Guinea) where it is an endemic species of the genus Lamellitettigodes . The specific epitheton is made of two words, adjective and noun of the first (A) Latin declension, both in Genitive case (Novae Guineae = novaeguineae).

Figures

Plate 2. E-H (lateral view). E. Lamellitettigodes palawanicus (SMTD), ♀; F. Lamellitettigodes novaeguineae, ♀ HT; G. Lamellitettigodes novaeguineae, ♂ PT 9 / 12; H. Lamellitettigodes karwinkeli, ♀ HT. Scale bars: 1 mm.

Plate 4. M-P (dorsal view). M. Lamellitettigodes palawanicus (SMTD), ♀; N. Lamellitettigodes novaeguineae, ♀ HT; O. Lamellitettigodes novaeguineae, ♂ PT 9 / 12; P. Lamellitettigodes karwinkeli, ♀ HT. Scale bars: 1 mm.

Plate 5. Q-X (frontal view). Q. Lamellitettigodes contractus, ♀ HT; R. Lamellitettigodes sagittatus, ♀ HT; S. Lamellitettigodes signatus, ♀ HT; T. Lamellitettigodes cultratus, ♀ HT; U. Lamellitettigodes palawanicus (SMTD), ♀; V. Lamellitettigodes novaeguineae, ♀ HT; W. Lamellitettigodes novaeguineae, ♂ PT 9 / 12; X. Lamellitettigodes karwinkeli, ♀ HT. Scale bars: 1 mm.