Matuanus bicolor Robillard & Desutter-Grandcolas 2008, n. sp.
Creators: name: Robillard, Tony
name: Desutter-Grandcolas, Laure
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllidae
Matuanus
Matuanus bicolor

description: Matuanus bicolor Robillard n. sp.   
Figs 6E, 18-22  
TYPE MATERIAL. — Holotype male (MNHN-ENSIF 1098): New Caledonia, 8 km NW Col d’Amieu, N la Foa, abattage, Pied Table Unio, 22.II.1994 (2) (L. Desutter-Grandcolas), MNHN.  
TYPE LOCALITY. — New Caledonia, 8 km NW Col d’Amieu, N la Foa, Pied Table Unio.  
 DESCRIPTION. — Small and slender species, differing from other species by coloration, male FW venation and male genitalia. Pattern of coloration close to M. caledonicus; very dark brown with a yellow line running from back of median ocellus and continued along eyes and lateral margins of pronotal dorsal disc and FWs. Head. Dorsum with 4 dark brown longitudinal bands fused anteriorly, and two others posterior to eyes (Fig. 6E). Cheeks and face uniformly yellowish brown. Fastigium with a black spot anterior to median ocellus. Maxillary palpi yellow, fourth and fifth joints with a brown ring. Scapes yellow, pedicel yellow basally then brown, flagellum black basally then progressively light brown. Pronotum dark brown, slightly lighter on lateral lobe ventral margins. Legs yellowish brown, tarsi uniformly yellow. TI slightly swollen at tympana level. FI-II with black spots, TI-II with two dark rings. FIII with black spots arranged in lines laterally; knee black, apical margin yellow. TIII yellow basally, then black dorsally; with 6 inner and 5 outer subapical spurs yellowish, their tip dark brown. Abdomen and subgenital plate yellow brown.   
 Male: FW venation. Veins and cells uniformly dark brown, ventral margins of lateral field slightly lighter. Stridulatory file present on 1A (178 teeth, n = 1). FWs venation asymmetrical (Figs 18-19), a group of cells posterior to file perhaps corresponding to a functional harp clearly more visible on left FW (Fig. 18). CuA dark in basal half, then yellow. Dorsal field with 5 longitudinal veins bifurcating from CuA (CuA1-5). Media veins and intermedia area yellow, yellow coloration limited to area between MP and R.   
Male genitalia (Figs 20-22): pseudepiphallus narrow and very long, covered by short setae; anterior margin widened, Y-shaped and folded posteriorly; apex with a median dorsal projection; lateral margins folded ventrally. Rami half as long as pseudepiphallic sclerite, articulated basally and widened apically. Pseudepiphallic parameres short; apex hook-like. Ectophallic fold little slerotized, narrowed posterior to parameres and reaching apex of pseudepiphallus. Ectophallic apodemes shorter than pseudepiphallus. Endophallic sclerite very elongate anterad, but not reaching raised part of pseudepiphallus. Endophallic apodeme not visible.  
Female: unknown  
MEASUREMENTS. — Holotype male. PronL: 2.1 mm; PronW: 2.5 mm; FIIIL: 9.5 mm; FIIIW: 2.5 mm; TIIIL: 8.6 mm; FWL: 13.9 mm; FWW: 2.8 mm.
description: Published as part of Robillard, Tony & Desutter-Grandcolas, Laure, 2008, Systematics of Matuanus Gorochov (Grylloidea, Podoscirtidae, Podoscirtinae) from New Caledonia: new data and the analysis of venation diversity, pp. 273-290 in Mémoires du Muséum national d'Histoire naturelle 196 on page 283