Parendacustes sp. 1

Desutter-Grandcolas, Laure, 2012, Phalangopsidae crickets from Espiritu Santo Island, Vanuatu (Insecta, Orthoptera, Grylloidea), Zoosystema 34 (2), pp. 287-304 : 300-301

Parendacustes sp. 1

( Fig. 7 A-D; Table 3)

MATERIAL EXAMINED. — Vanuatu, Espiritu Santo, île de Malo, grotte Lao, 15°40.399’S, 167°05.181’E, 2 m alt., 5 juveniles (fn 1889), 20.VIII.2005 (J. Lips) ( MNHN- ENSIF 2896, alcohol collection vial 550).

HABITAT. — The cave where Parendacustes sp. 1 has been found is a crack 15 m long in the coral shelf, on the shore line.

D ESCRIPTION

Specimens characterised by the following characters: size small, even in older individuals. No wing pads in older juveniles.

Head Fastigiumnarrowerthanthescapes.Ocelliallverysmall; median ocellus small, vertical, subapical in position and located in a shallow depression. Eyes protruding, relatively small (only slightly longer than the scapes). Maxillary palpi not very long;joint4longer than joint3 and shorter than joint 5; joint 5 slightly, but regularly widened toward apex, truncated straight (?) apically.

Pronotum

Transverse; anterior margin concave; posterior margin convex; posterior angle of lateral lobe raised dorsally (included in the measure of pronotum posterior width, see Table 2).

Legs

TI, TII with two ventral apical spurs; no trace of tympana on TI in older juveniles. FIII apical third very thin ( Fig. 7A ). TIII ( Fig. 7A ) well shorter than FIII (see measurements); three inner and three outer apical spurs;outer spurs short, the median the longest, twice as long as dorsal spur; inner spurs much longer, the dorsal the longest, shorter than half basitarsus III; 3-4 outer subapical spurs, of equal size, located in TIII basal half, the first two closer to each other than to the third, the first (most apical) closer to TIII apex than to second spur; only one inner subapical spur, short, slightly lower on TIII than the outer subapical spur 2; a large spine or an additional inner subapical spur sometimes present near TIII apex ( Fig. 7B ). TIII without dorsal serrulation.Basitarsi III very long (see measurements), without dorsal serrulation ( Fig.7A ).

Colouration (specimens in alcohol)

Head dorsum light yellow; four longitudinal brown lines, two median, joining behind lateral ocelli into a short transverse brown line, and two lateral, very short. Face ( Fig. 7C ) light yellow; two longitudinal black lines on each side of median ocellus, down to lower margin of antennal pit; in lighter specimens, each of these lines widened as a triangular black spot at inner angle of antennal pit, prolonged by a thin black line along antennal pit and by a small triangular spot between the outer angle of antennal pit and the eye; in darker specimens dark spots and line under antennal pit and eye enlarged and prolonged down to epistemal suture as a wide dark triangle more or less mottled with yellow; in all specimens, these dark spots and lines delimiting a light yellow, median, bottle-like area, extended or not down to epistemal suture. Cheeks light yellow; posterior margins more or less marked with dark brown. Mouthparts light yellow; two dark spots along upper margin of clypeus. Pronotum brown with light yellow pattern; margin light yellow, darker on lateral lobe posterior fourth. Dorsal disc posterior margin widely bordered with yellow, with a row of brown dots; a median longitudinal yellow line; muscular inscriptions yellow, widely bordered with yellow (anteriorly) and yellowish brown (posteriorly). Lateral lobes brown; lower margins yellow ( Fig. 7D ). Legs annulated light yellow and brown, densely covered with short, black setae; tarsi light yellow. Tergites mottled light yellow and brown; posterior margins yellow, bordered with brown dots, possibly fused together, especially on distal tergites. Sternites light yellow. Outer tooth of coxae I and distal half of coxa outer margins brown; a small dark spot near coxa I inner tooth. Cerci yellowish, darker basally.

Male genitalia (juvenile state)

Pseudepiphallus prolonged by two long, lateral processes; posterior margin unpaired.

Measurements

See Table 3.

Figures

FIG. 7. — Parendacustes spp.: A-D, Parendacustes sp. 1, TIII outer (A) and inner (B) sides, face (C) and pronotum lateral lobe (D); E-I, Parendacustes sp. 2, TIII outer (E) and inner (F) sides, face (G), cheeks (H) and pronotum lateral lobe (I). Abbreviation: (s1) facultative inner subapical spur; other abbreviations, see Material and methods. Scale bars: 1 mm.