Centuriarus centurio (Brunner von Wattenwyl, 1898) Robillard, 2011

Robillard, Tony, 2011, Centuriarus n. gen., a new genus of Eneopterinae crickets from Papua (Insecta, Orthoptera, Grylloidea), Zoosystema 33 (1), pp. 49-60 : 54-57

Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb.

( Figs 1-7 )

Piestodactylus centurio Brunner von Wattenwyl, 1898: 278 .

Lebinthus centurio – Chopard 1931: 21 (in the description of Lebinthus flavipalpis Chopard, 1931 ).

Eurepa centurio – Chopard 1968: 356. — Otte 1994: 66. — Robillard & Desutter-Grandcolas 2004: 271-293 (> Eurepini tribe).

TYPE MATERIAL. — No type series is mentioned in the original description, but the author mentions “my collection”. One male specimen found in the collections of Vienna is suspected to be part of the type series according to labels and measurements; it is designated as lectotype: Indonesia. [Irian Jaya, Papua Island ], Kaiser Wilhelm Ins., 1 ơ, 19.281 ( NHMW) .

TYPE LOCALITY. — Indonesia, Papua Island, no precise locality.

OTHER MATERIAL EXAMINED. — Indonesia. [Irian Jaya, Papua Island], Hollandia [Jayapura], 1911, Dr. P.N. von Kampen Ned. Nw [ New ] Guinea exp, 1 ơ, 2 ♀♀ ( RMNH) ; 1 ơ ( MNHN-ENSIF 1772 ) .

Papua New Guinea . Simbang, Huon Golf, 1898, Biro, identified Eurepa centurio Br. by L. Chopard, 1 ♀ ( MNHN-ENSIF 1444).

DISTRIBUTION. — Papua Island.

DIAGNOSIS. — Very large species, with a contrasted colouration, yellow brown with a dark brown area on FW in both sexes.

HABITAT AND LIFE HISTORY TRAITS. — Unknown.

MEASUREMENTS. — See Table 1.

REDESCRIPTION

In addition to the features of the genus, colouration contrasted, mostly yellow brown with darker areas. Eyes red brown. Head dorsum homogeneously brown with a yellow brown area posterior to eyes ( Fig. 1 ). Fastigium yellow brown. Scapes yellow brown with dark brown patterns, antennae dark brown with yellow rings. Cheeks dark brown except for a Y-shaped yellow pattern and a yellow spot below eyes. Face yellow brown with dark brown patterns on front head and below antennae. Mouthparts yellow or whitish, more or less mottled with dark brown. Palpi yellow with one dark brown ring per segment. Pronotum: Dorsal disk brown to dark brown, diversely mottled with yellow brown, especially on posterior and lateral margins; lateral lobes dark brown. Legs: fore ( Fig. 3 ) and median femora dark brown with yellow brown spots; tibiae, tarsomeres I-1 and tarsomeres I-3 dark brown with a yellow brown ring. Hind femora mostly dark brown mottled with yellow brown, homogeneously brown near the knees; hind tibiae almost homogeneous brown, with yellowish areas around bases of spurs; basis of tarsomeres III-1 yellow brown, distal part dark brown. Hind tibiae with 8-9 (m = 8.3, n = 4) inner and 11-13 (m = 12.3, n = 4) outer spines above spurs and 7-8 (m = 7.8, n = 4) inner and 8-10 (m = 9, n = 4) outer spines between spurs. Tarsomeres III-1 with 3-4 (m = 3.7, n = 3) spines on dorsal outer edges and 1 (n = 3) spine on outer side bases. Abdomen brown dorsally, sometimes with lateral whitish spots. Cerci yellow brown, mottled with dark brown at basis, then with dark brown rings in distal part.

Male

FW colouration ( Figs 1 ; 4 ): cells and veins homogeneously yellow brown with several small dark brown spots and a large dark area anterior to 1A, including a portion of 2A and 3A; part of intermedian area and area between MA and R dark brown. FW venation ( Fig. 4 ): harp triangular, with thin cuticular reliefs, crossed by one complete transverse vein. CuA quite weak. c1 cell not crossed by a transverse vein. D alignment and mirror (d1) well differentiated, but mirror not rounded. Stridulatory file ( Fig. 5 ): 103 teeth on the transverse part of 1A, 21 teeth on the longitudinal part, and 6 teeth on the ventral bump near 1A basis (total = 130 teeth, n = 1). Lateral field: latero-dorsal angle made by MP; distal part of MP weak, fused to MA; R bifurcated three times in distal third; ventral part of lateral field with 4 extra longitudinal veins.

Male genitalia ( Fig. 6 ). Pseudepiphallus profile almost flat; lophi very setose on ventral side, with lateral indentations on sclerotisation of dorsal side.

4A 3A 2A 1A (file)

TABLE 1. — Measurements (in mm) of Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb., mean values in brackets. Male measurements include the lectotype. Abbreviations: see Material and methods.

Female

FWs yellow brown to dark brown, including cells and veins, with a dark brown area including bases of veins 2A, 3A and 4A; dark brown spots near bifurcation of 1A; intermedian area and between MA and R dark brown except on posterior margin of FW ( Fig. 7A ). Longitudinal veins very strong, especially 1A, MA and MP; transverse veins weak. Ovipositor slightly shorter than hind femur (Table 1).

Female genitalia ( Fig. 7 C-E). Well sclerotised, with lateral undulations; ventral reliefs consist of a median triangular crest prolonged by the raised apex.

REMARK

The female specimen from Papua New Guinea is darker than those from Irian Jaya, but shows not significant differences in general patterns of colouration and FW venation.

B

Figures

FIG. 1. — Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb., ơ lectotype (NHMW), habitus. Scale bar: 5 mm.

FIG. 2. — Shape and size comparisons of the head of Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb., (A), Lebinthus leopoldi Chopard, 1931 (B), and Cardiodactylus novaeguineae (Haan, 1842) (C), showing eye length (bold line), head length (large dotted line) and fastigium width (fa; horizontal arrow). Scale bar: 1 mm.

FIG. 3. — Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb.fore leg in inner (A) and outer (B) views.The tympana are indicated using black arrows and dotted lines. Scale bar: 1 mm.

FIG. 4. — Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb.male, FW venation.Dense and spaced dotted areas represent respectively dark and whitish colouration patterns; strong dotted lines represent folds and reliefs. Abbreviations: see Material and methods. Scale bar: 1 mm.

FIG. 5. — Anterior part of male FW of Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb. in ventral view (B), with a detailed view of the basal bump on the stridulatory file (A). Scale bar: A, 1 mm.

FIG. 6. — Male genitalia of Centuriarus centurio (Brunner von Wattenwyl, 1898) n. comb.in dorsal (A), lateral (B), and ventral (C) views. Abbreviations: see Material and methods. Scale bars: 1 mm.

FIG. 7. — Female of Centuriarus centurio (Brunner von Wattenwyl,1898) n. comb.: FW venation (A), apex of ovipositor (B), and copulatory papilla in ventral (C), lateral (D) and dorsal (E) views. In FW venation, dense dotted areas represent dark colouration patterns; in copulatory papilla, dotted parts correspond to membranous areas. Scale bars: 1 mm.