Probolotettix corticolus Blackith & Blackith, 1987

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 Sceli, Journal of Orthoptera Research 28 (2), pp. 167-180: 169-170

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Probolotettix corticolus Blackith & Blackith, 1987

syn. nov.

Probolotettix corticolus Blackith & Blackith, 1987  syn. nov.

Probolotettix corticolus  : Blackith and Blackith 1987: 5-8; Blackith 1990: 89-90; Blackith 1992: 146; Yin et al. 1996: 902 (error: carticolus); Otte 1997: 57.

Type material. -

HT Probolotettix corticolus  : ♀, Indonesia, Sulawesi, Minehassa Prov., Dumoga-Bone National Park, 13.III.1985, leg. Blackith, RMNH (not seen, probably lost).

PTs Probolotettix corticolus  : ♂, Indonesia, Sulawesi Utara, Dumoga-Bone National Park, I.-III.1985, leg. R. & R. Blackith, BMNH; ♀, Indonesia, Sulawesi Utara, Dumoga-Bone National Park, I.-III.1985, leg. R. & R. Blackith, LEMQ; ♂+♀, Indonesia, Sulawesi Utara, Dumoga-Bone National Park, I.-III.1985, leg. R. & R. Blackith, NMI (not seen), MZB (not seen).

Notes. -

After the description and the drawing of the HT in Blackith and Blackith (1987), this species is a typical L. contractus  . I have seen the PT in BMNH and LEMQ and there is no doubt that they are L. contractus  .

Additional material examined. -

Philippines: 3♂♂, Siargao, 9°52'33"N, 126°00'35"E, on leaf, 28 m, 7.IV.2018, leg. M. K. Tan, Yeo, H., Yap, S. A. & Baroga, J. B., CMTK. Indonesia: ♀, Sumatra, Lac de Toba, 1.V.1929, leg. Prince Leopold, RMNH; ♀, Sumatra, Soekaranda, leg. Dohrn, SMTD; ♀, W. Sumatra, Padang Panjang, 28.VIII.1991, leg. W. Guidetti, CJT; ♀, Sumatra, Sibolangit, 550 m, 11.X.1921, leg. J. B. Corporaal, RMNH; ♂, ♀, Sumatra, Fort de Kock, 920 m, 1926, leg. E. Jacobson, RMNH; ♂, Sumatra, Lubuksikaping ( Sumatra’s Westkust), 450 m, 1926, leg. E. Jacobson, RMNH; 2♂♂, 7♀♀, Sumatra, S. W. Lampong distr., Mt. Tanggamoes, Gisting ult., 500 m, XII.1939, leg. M. A. Lieftinck, RMNH; 2♂♂, Mentawai, Siberoet, 24.+28.IX.1924, leg. H. H. Karny, RMNH; ♂, Mentawai, Sipora, 11.X.1924, leg. H. H. Karny, RMNH; ♀, Nias, Sisobahili I., Tankec, ca. 14 km v. Gunung Sitoli, IX.1991, leg. W. Guidetti, CJT; ♂, ♀, Westjava, Mt. Guntur, Garoet, 1350 m, leg. Overbeck; ♂, ♀, Java, G. Tjikorai, 900 m, X.1934, leg. E. Jacobson, RMNH; ♂, Java, Tjikadjang, Bandjarwangi, W. Java, 800-900 m, 7.-10.IV.1939, leg. M. A. Lieftinck, RMNH; ♂, Java, Penandjoeng Bay, Kalinnoetjang, 300 m, VII.1936, leg. M. A. Lieftinck, RMNH; 3♂♂, 4♀♀, Borneo, Midden O. Borneo, 19.VIII.1925, RMNH, leg. H. C. Siebers; ♀, Borneo, Tabang, Bengen River, East Borneo, 125 m, 10.IX.1956, leg. A. M. R. Wegner, RMNH; ♀, Borneo, O. Borneo, Tandjong Redeb, leg. Mjöberg, NHRS; ♀, Borneo, Sarawak Distr., leg. Mjöberg, NHRS; 3♂♂, 2♀♀, Borneo, Long Navang, leg. Mjöberg, NHRS; 2♂♂, 3♀♀, Borneo, Kajan River, leg. Mjöberg, NHRS; ♀, Borneo, East-Sabah, Sepilok RDC, 5°87'57.57"N, 117°94'75.76"E, leg. T. Kirschey, CJT. Solomon Islands: 2♂♂, Malaita, Auki, 2-20 m, 22.IX.1957, leg. J. L. Gressitt, BPBM.

Differential diagnosis. -

L. contractus  has more or less parallel prozonal carinae, slightly bent backwards. The distance between the upper margin of the superior ocelli and frontal margin of the fastigium is significantly larger than a diameter of an ocellus in frontal view. The species is similar to L. palawanicus  . This species can be easily separated by the tip of fastigium and frontal costa, which are distinctly protuberant in front of the eyes, and the fastigial horns, which are clearly visible above the eyes.

Measurements. -

(in mm) L. c. contractus  (LT/PLT): Pronotum length 12.61/11.63; pronotum lobe width 3.25/2.92; pronotum height 2.53/1.58; vertex width 0.54/0.45; eye width 0.45/0.45; tegmen length 1.60/1.50; hind wing length 11.18/10.88; postfemur length LT 5.46; postfemur width LT 1.70.

L. c. tricristatus  syn. no v. LT: Pronotum length 8.71; pronotum lobe width 2.57; pronotum height 1.95; vertex width 0.43; eye width 0.39; tegmen length 1.07; hind wing length 7.28; postfemur length 3.95; postfemur width 1.25.

L. c. sumatrana  syn. nov. (LT/PLT): Pronotum length 10.40/10.01; pronotum lobe width 2.99/2.73; pronotum height 2.74/2.21; vertex width 0.50/0.49; eye width 0.41/0.39; tegmen length 1.56/1.43; hind wing length 10.27/9.23; postfemur length 5.07/4.55; postfemur width 1.69/1.43.

T. cuspidata  (LT/PLT2/3/PLT3/3): Pronotum length 10.79/10.92/8.71; pronotum lobe width 3.25/2.80/2.65; pronotum height 1.65/1.50/1.35; vertex width 0.50/0.47/0.45; eye width 0.47/0.47/0.41; tegmen length 1.55/1.45/1.30; hind wing length 8.97/10.53/8.58; postfemur length 5.20/4.40/4.24; postfemur width 1.65/1.45/1.35.

Additional measurements: (in mm) ♀ Sumatra, Lac de Toba: Pronotum length 9.75; pronotum lobe width 2.95; pronotum height 2.29; vertex width 0.54; eye width 0.41; tegmen length 1.30; hind wing length 9.23; postfemur length 4.88; postfemur width 1.45. ♀, Borneo, Sepilok RDC: Pronotum length 10.79; pronotum lobe width 3.00; pronotum height 1.45; vertex width 0.47; eye width 0.45; tegmen length 1.55; hind wing length 10.27; postfemur length 4.81; postfemur width 1.60. ♂, Solomon Is., Malaita: pronotum length 9.88; pronotum lobe width 2.60; pronotum height 1.45; vertex width 0.47; eye width 0.43; tegmen length 1.35; hind wing length 8.97; postfemur length 4.42; postfemur width 1.40.

Distribution. -

The species inhabits the Southeast Asian mainland ( Günther 1939), Singapore ( Hancock 1909), islands of Southeast Asia - Sumatra (and adjacent Nias, Mentawai, and Enggano), Java, Borneo, Sulawesi ( Günther 1939), and finally the Solomon Islands. The species has not been found hitherto in New Guinea. Hancock (1907a), however, refers to New Guinea under Xistra tricristata  , and Günther (1935) wrote ‘’ (...) also known to me from SE New Guinea’’. I have not been able to detect this species in New Guinea and the Bismarck Archipelago, although it is found to inhabit the Solomon Islands. Hancock’s (1907a) and Günther’s (1935) records could belong to L. novaeguineae  sp. nov.