Lebinthus buruensis, Robillard, Tony, 2010

Robillard, Tony, 2010, New species of the genus Lebinthus (Orthoptera, Grylloidea, Eneopterinae, Lebinthini) from Indonesia and the Solomon Islands, Zootaxa 2386, pp. 25-48 : 29-32

Lebinthus buruensis n. sp.

( Figs 1 B, 3B, 4B, 5D–F, 6A, 7A, 8A–C)

Type material. Holotype male: Indonesia: Province Maluku: [ Pulau] Buru Is., Station 16, 20/ 2-X-1921, leg. L. J. Toxopeus ( MZB Orth 1753). Allotype female: same locality as HT, Station 9, 28-VI-1921, leg. L. J. Toxopeus ( MZB Orth 1853), (MNHN-ENSIF2365).

Type locality. Indonesia, Pulau Buru Island.

Etymology. Species named after the type locality of Buru Island, Indonesia.

Other material examined. Indonesia: Province Maluku: [ Pulau] Buru Is., Station 16, 20/ 2-X-1921, 1 Ƥ juvenile, leg. L. J. Toxopeus ( MZB Orth 1846).

Distribution. Indonesia, Pulau Buru Is.

Diagnosis. Species of small size, with eyes small and little protruding, differing strikingly from other members of the genus by male genitalia.

Description. Size small. Colouration brownish. Head dorsum yellowish brown with 6 wide dark brown longitudinal bands. Eyes little protruding. Fastigium wider than long, setose and slightly carenated posteriorly to yellow median ocellus. Scapes yellowish brown with faint dark patterns on facial side; antennae yellowish brown to dark brown. Cheeks dark brown posterior to eye, except ventral margin yellow ( Fig. 3 B). Face, front head, mandibles, clypeus and area surrounding median ocellus dorsally black; ventral margins of eyes yellow; faint light brown patterns on epistomal suture, front head and clypeus. Palpi brown. Pronotum: Dorsal disk slightly trapezoidal, straight posteriorly; yellowish brown with dark brown spots, a faint dark brown band medially, lateral margins yellow, anterior and posterior margins with dark brown patterns. Lateral lobes black except a yellow spot on ventral margin ( Fig. 3 B). Legs: fore and median femora yellowish brown with dark brown spots on dorsal surface, fore and median tibiae brown. Hind femora red brown mottled with yellow, with striated brown patterns on outer face, 3–5 black spots on each ventral edge; hind tibiae brown, distal half of tarsomeres III-1 dark brown. Hind tibiae with 4–5 inner (m = 4.5, n = 2) and 7–8 outer (m = 7.5, n = 2) spines above spurs and 3 inner (n = 2) and 5–6 outer (m = 5.5, n = 2) spines between spurs. Tarsomeres III-1 with 4 spines on dorsal outer edges (n = 2). Abdomen homogeneously dark brown. Cerci yellowish brown basally, then homogeneously brown.

Male: FW setose, not reaching abdomen midlength ( Fig. 1 B). FW colouration: Cells and veins homogeneously brown, not translucent. FW venation: Most veins very faint. 1A angle wide (>100°). CuP missing. Harp wide, almost flat, with no harp vein and without a distinctive rounded area. Proximal part of CuA very faint, distal part slightly curved inwards around the median fold. Diagonal vein prolonged posteriorly by a strong elevated vein fused to R. Longitudinal veins very strong at apex, transverse veins very weak or absent, except a faint but wide transverse vein posterior of the undifferentiated mirror (d1). Apical field restricted to 2 cells in E alignment. Lateral field homogeneously brown, except a translucent area on ventral margin; with 5 strong longitudinal veins including MA, R and 3 more ventral veins, the most ventral one bifurcated; latero-dorsal angle made by MP; R without strong bifurcating veins. Subgenital plate trapezoidal, slightly indented posteriorly ( Fig. 4 B).

Male genitalia ( Fig. 5 G–I): Pseudepiphallic sclerite as wide as long, convex dorsally; posterior apex with large triangular lophi, separated by a deep V-shaped indentation; anterior apex straight, its lateral margins slightly curved dorsally. Rami short. Pseudepiphallic parameres very large, trilobate, the posterior lobe short and dorsal, the two other lobes ventral, the posterior one very elongate, surrounding outerly the pseudepiphallic lophi. Ectophallic arc complete, narrow, near basis of pseudepiphallic parameres. Ectophallic fold short and wide, membranous. Ectophallic apodemes parallel and short. Endophallic sclerite short, but exceeding anterior margin of pseudepiphallus, convex dorsally, its posterior apex with a median expansion; endophallic apodeme made of lateral lamellas and a narrow median crest.

Female: FW very short ( Fig. 6 A), reaching posterior margin of first tergite, not overlapping; homogeneously dark brown, except a lighter area near lateral margin of dorsal field; dorsal field with 4 strong and 1 weak longitudinal veins. Lateral field with 2 strong dark brown longitudinal veins. Ovipositor as long as hind femora; apex lanceolate, darker brown, denticulate on dorsal edge ( Fig. 7 A).

Female genitalia: Copulatory papilla ( Fig. 8 A–C) concave ventrally, well sclerotized except apex and median dorsal area.

Juvenile: Subadults similar to adults in colouration, dark brown.

Measurements. see Table 1 .

Habitat and life history traits. unknown.

Behaviour. unknown.

Figures

FIGURE 1. Male FW venation in dorsal view of: A, Lebinthus ambonensis n. sp.; B, Lebinthus buruensis n. sp.; C, Lebinthus cyclopus n. sp.; D, Lebinthus kolombara n. sp.; E, Lebinthus greensladei n. sp.; F, Lebinthus truncatipennis; G, Lebinthus villemantae n. sp. Abbreviations, see Material and methods. Dotted lines correspond to folds; dotted parts correspond to areas of light colouration. Colours: red, harp area; yellow, c 1 cell (s); orange, end of C alignment; green, mirror (d 1 cell (s )), blue, d 2 cell (s); cream, rest of D alignment. Scale bar: 1 mm.

FIGURE 3. Cheek, lateral lobe of pronotum and lateral field of male FW of: A, Lebinthus ambonensis n. sp.; B, Lebinthus buruensis n. sp.; C, Lebinthus cyclopus n. sp.; D, Lebinthus greensladei n. sp.; E, Lebinthus kolombara n. sp.; F, Lebinthus truncatipennis; G, Lebinthus villemantae n. sp. Scale bar: 1 mm.

FIGURE 4. Male subgenital plate of: A, Lebinthus ambonensis n. sp.; B, Lebinthus buruensis n. sp.; C, Lebinthus cyclopus n. sp.; D, Lebinthus greensladei n. sp.; E, Lebinthus kolombara n. sp.; F, Lebinthus truncatipennis; G, Lebinthus villemantae n. sp. Scale bar: 1 mm.

FIGURE 5. Male genitalia of: A – C, Lebinthus ambonensis n. sp.; D – F, Lebinthus buruensis n. sp.; G – I, Lebinthus cyclopus n. sp.; in dorsal (A, D, G), ventral (B, E, H) and lateral (C, F, I) views. Abbreviations, see Material and methods. Scale bars: 1 mm.

FIGURE 6. Female FW venation of: A, Lebinthus buruensis n. sp.; B, Lebinthus greensladei n. sp.; C, Lebinthus truncatipennis; D, Lebinthus villemantae n. sp. Dotted areas represent patterns of white or yellow areas. Black arrows show the posterior limit of first abdominal tergite. Abbreviations, see Material and methods. Scale bar: 1 mm.

FIGURE 7. Apex of ovipositor in lateral view of: A, Lebinthus buruensis n. sp.; B, Lebinthus greensladei n. sp.; C, Lebinthus truncatipennis; D, Lebinthus villemantae n. sp. Scale bar: 1 mm.

FIGURE 8. Female copulatory papilla in dorsal, ventral and lateral views of: A – C, Lebinthus buruensis n. sp.; D – F, Lebinthus greensladei n. sp.; G – I, Lebinthus truncatipennis; J – L, Lebinthus villemantae n. sp. Scale bar: 1 mm.

Tables

TABLE 1. Measurements (in mm, mean value in brackets). PronL, pronotum length; PronW, pronotum width at midlength; FIIIL, hind femur length; FIIIW, hind femur maximal width; TIIIL, hind tibia length; FWL, forewing length; FWW, forewing width at midlength (at the first bifurcation of CuA 1 in males); OvipL, ovipositor length; Strid, number of stridulatory file teeth.

	PronL	PronW	FWL	FWW	FIIIL	FIIIW	TIIIL	Strid	OvipL
L. ambonensis Male holotype	2.8	3.6	3.3	2.4	10.1	3.7	7.4	?	-
L. buruensis Male holotype Female allotype	2.3 2.5	3.3 3.7	3.5 0.8	2.5 1.3	8.1 8.4	3.0 3.2	6.1 6.3	? -	- 8.3
L. cyclopus Male holotype	2.2	3.4	2.7	2.4	8.3	3.2	6.2	?	-
L. greensladei Male holotype Female allotype Males (n=3) Females (n=3)	2.4 2.1 2.4 2.1-2.4 (2.2)	3.6 3.3 3.4–3.7 (3.6) 3.1–3.6 (3.3)	3.4 1.2 3–3.4 (3.2) 1.2–1.4 (1.3)	2.1 1.1 2.1–2.2 (2.1) 1.1–1.3 (1.2)	9.9 9.3 9.6–9.9 (9.8) 9.3–9.5 (9.4)	3.6 3.6 3.5–3.9 (3.7) 3.6–3.7 (3.6)	7.3 6.6 7.2–7.8 (7.4) 6.6–7.9 (7.3)	195 - 190–195 (193, n=2) -	- 7.3 - 7.3–8.4 (7.9)
L. kolombara Male holotype	2.6	3.4	3.0	2.2	10.3	3.8	7.9	?	-
L. truncatipennis Male allotype Males (n=6) Female (n=1)	2.6 2.3–2.6 (2.5) 2.5	3.9 3.4–3.9 (3.7) 3.8	3.7 3.6–3.9 (3.8) 1.8	2.7 2.7–3 (2.9) 0.9	12.6 10–12.6 (11.3) 10.8	4.0 3.2–4.0 (3.7) 3.8	10.0 8.3–10 (9.1) 8.2	? 223 (n=1) -	- - 8.3
L. villemantae Male holotype Female allotype Males (n=5) Females (n=5)	2.4 2.3 2–2.3 (2.2) 1.9–2.2 (2.0)	3.5 3.4 3.1–3.6 (3.4) 3–3.4 (3.2)	3.8 1.9 3.4–4.3 (3.8) 1.8–2.3 (2.0)	2.5 1.7 2.2–2.9 (2.6) 1.7–1.9 (1.8)	10.4 10.0 9.4–11.1 (10.3) 9.2–10.4 (9.7)	3.3 3.4 3–3.6 (3.3) 2.9–3.5 (3.2)	8.5 8.3 8.1–9 (8.5) 7.8–8.6 (8.3)	? - 198–213 (203, n=4) -	- 7.5 - 7.5–8.3 (7.9)