Gryllodes Saussure, 1874

Desutter-Grandcolas, Laure, Anso, Jérémy & Jourdan, Hervé, 2016, Crickets of New Caledonia (Insecta, Orthoptera, Grylloidea): a key to genera, with diagnoses of extant genera and descriptions of new taxa, Zoosystema 38 (4), pp. 405-452 : 434-436

Genus Gryllodes Saussure, 1874

Gryllodes Saussure, 1874: 409 .

TYPE SPECIES. — Gryllus sigillatus Walker, 1869 by subsequent designation ( Kirby 1906).

ILLUSTRATIONS. — Habitus: Fig. 10E ; Otte 2006: fig. 1. Male genitalia: Otte 2006: fig. 2. Calling song: Otte & Alexander 1983: fig. 67.

EMENDED DIAGNOSIS. — After Otte & Alexander (1983). Medium sized species, larger than Lepidogryllus . Body pubescent, lightly coloured. Head rounded in front view, high in lateral view (compared to other grylline genera). Eyes slightly protruding. Median ocellus present, smaller than lateral ocelli, subapical. Maxillary palpi: joint 4 slightly longer than joint 3, shorter than joint 5; joint 5 little but regularly widened toward apex, dorsal and ventral margins slightly divergent. Pronotum wider than long, transverse; LL longer than high, without a vertical groove or depression in posterior half; LL anterior part raised dorsally, posterior part shorter; DD lateral sides convex.TI outer tympanum well-developed, elongate; with a tympanal trace on inner side; three apical spurs, set as a triangle. TII with four apical spurs. TIII shorter than FIII but not particularly short; with five inner and five outer subapical spurs; three apical spurs on each

A

Amplitude

B

Amplitude

C

20) kHz 15 (Frequency 10 5

D

Amplitude 0 1.5 3 4.5 6 7.5 Time (ms)

0 5 10 15 20 Frequency (kHz)

iod PronL PronWp FWL FWW* FIIIL FIIIw TIIIL tar1-III

Holotype 1.8 2.1 3.7 6.8 3 7.4 2.7 4.7 2.3

side, the median the longest on outer side, the dorsal on inner side. Basitarsomeres III with two rows of few, strong spines; outer spines more numerous. Short FWs present in both sexes. HWs present or lacking in both sexes. Cerci very long. Coloration. Body, head and legs yellowish marked with brown. A wide yellow transverse band between lateral ocelli; median ocellus circled with yellow, this coloration prolonged toward face. Head dorsum with an alternation of yellow and brown transverse bands, from between lateral ocelli to brown occiput. Pronotum almost completely light yellow, only distal margin and a spot on LL dark brown.

Male. FWs reduced, covering about half abdomen; apical field very reduced. Stridulum complete, with a well-delimited mirror; harp with two oblique veins. Lateral field high, with several slightly oblique, longitudinal veins. Male genitalia: Pseudepiphallic sclerite transverse, H-shaped, with two short distal lateral lobes and a small, squared median process. Rami long and straight. Pseudepiphallic parameres elongate and narrow, sclerotized on inner and outer margins, concave, with a small apical tooth. Ectophallic fold long and thin. Dorsal cavity well-developed, high and not twisted.

Female. Tergite I brown distinctly visible. FWs flap-like, widely separate; venation thick, with longitudinal and transverse veins on dorsal field and longitudinal veins on lateral field. Ovipositor very long with a thin, lanceolate apex.

CALLING SONG. — The song of Gryllodes sigillatus is described by Otte & Alexander (1983: fig. 67) as a succession of echemes comprising usually three syllables.

DISTRIBUTION. — Cosmopolitan genus (see Otte 2006). Gryllodes sigillatus (Walker, 1869) is reported from Nouméa by Otte et al. (1987: 399).

HABITAT. — Gryllodes sigillatus is a widespread species encountered in cities ( Otte & Alexander 1983: 160).

Figures

FIG. 10. — New Caledonian Gryllinae (Gryllidae): A, Notosciobia sp., from Parc Provincial de la Rivière Bleue, by night (Photo PG); B, Teleogryllus oceanicus (Le Guillou,1841) from Vanuatu;C, Lepidogryllus comparatus (Walker,1869),specimen from Col d’Amieu,mé Areto;D, Lepidogryllus darthvaderi Desutter-Grandcolas & Anso, n. sp., male holotype from Grand Kaori; E, Gryllodes sigillatus (Walker, 1869), from Rodrigues (Photo SH). Scales bars: 2 mm.