Phaloria paradischidia Tan & Robillard, 2021

Tan, Ming Kai, Rahmadi, Cahyo & Robillard, Tony, 2021, New species of Phaloria (Orthoptera: Phalangopsidae: Phaloriinae) from West Papua (Indonesia), Zootaxa 4985 (4), pp. 513-530 : 516-517

Phaloria paradischidia Tan & Robillard , sp. nov.

( Figs. 1B , 2B , 3B , 4B , 5C, 5D , 6C , 7 )

Material examined. Holotype (male, LEN2014 -TR634) New Guinea, Indonesia, West Papua, Kumawa , S4.0518611, E133.066083 ( KUM5 ), 87 m. a.s.l., forêt sur pente en amont de la rivière [forest on slope upstream of the river], 16–17.xi.2014, nuit [night], molecular sample P2, T. Robillard ( MZB.Orth.21839).

Paratype: 1 male ( LEN2014 -TR631), same locality and details as holotype, call recording on video 203 ( MNHN-EO-ENSIF 11335 )

Type locality. New Guinea, Indonesia, West Papua, Kaimana Regency, Kumawa

Etymology. The species name refers to the similarity of this new species with the preceding new species, P. dischidia sp. nov.

Diagnosis. This new species is unique among congeners by genitalia: pseudepiphallic lobes slender and tapering before enlarging into rhomboidal–roundish apex; pseudepiphallic parameres with a rectangular basal inner lobe and a stout and curved hook-like apical outer process; ectophallic apodeme inner apical arm pointing posteriorly before bending at the apex towards one another and outer apical arm straight with apex obliquely enlarged and truncated.

This new species is most similar to P. beybienkoi from Supiori Island (north of West Papua) in habitus, colour patterns and male genitalia. It differs by pseudepiphallic parameres with inner basal lobe more rectangular and forming two angular lobules (instead of rounded) and pseudepiphallic lobes more angular rather than rounded. It is also similar to P. similis and P. parasimilis from New Guinea by pseudepiphallic parameres with rectangular lobe but differs by hook-like process not positioned basally and pseudepiphallic lobes with apex enlarged.

Subgeneric status. This species should belong to the subgenus Papuloria based on the pseudepiphallus with a pair of lateral lophi and endophallic sclerite without large unpaired apodeme directed anteriorly.

Description. Very similar to P. dischidia sp. nov. in habitus, size and colour patterns ( Figs. 1B , 2B , 3B ). Male. FW dorsal and lateral fields and hind wings very similar to P. dischidia sp. nov. except: FWs 1.7 times longer than wide, mirror with distal dividing vein roundly curved, instead of slightly sinuous ( Fig. 4B ). Mirror 0.8 times as long as wide, apical field about 0.5 times shorter than length of mirror.

Male genitalia also similar to P. dischidia sp. nov. ( Figs. 5C, 5D ) except for: Pseudepiphallus narrower, with posterior margin with a deep, rounded indentation in the middle. Pseudepiphallic lobe enlarged into rhomboidal– roundish apex. Pseudepiphallic parameres with basal inner lobe not distinctly indented. Ectophallic apodemes forkshaped, with basal end broad; inner apical arm pointing posteriorly before bending at the apex towards one another; outer apical arm straight, with apex obliquely enlarged and truncated.

Female. Unknown.

Measurements (in mm). Male holotype PronL = 2.6, PronW = 4.2, FWL = 10.4, FWW = 6.0, FIIIL = 8.3, FIIIW = 2.6, TIIIL = 7.0.

Calling song ( Fig. 7 ). At 26°C, the calling song has a duration of 0.12±0.03 s (0.1–0.19 s) consists of two (and rarely, three) isolated syllables. Each syllable has a duration of 17.3±1.8 ms (14.0–21.0 ms). The syllables within each call are separated by a down time of 68.6±2.7 ms (64.0–75.0 ms). The syllable has a dominant frequency of 4.83±0.02 kHz (4.82–4.91 kHz).

Figures

FIGURE 1. Habitus of Phaloria males (A–D, F–I) and females (E, J, K) from Lobo and Kumawa in dorsal (A–H, J) and lateral (I, K) views: P. dischidia sp. nov. (A), P. paradischidia sp. nov. (B), P. tukul sp. nov. (C), P. brevis sp. nov. (D, E), P. berbeda sp. nov. (F), P. lobulata sp. nov. (G), P. nr. aspersa (H–K). Scale bars: 5 mm.

FIGURE 2. Head and pronotum of P. dischidia sp. nov. (A), P. paradischidia sp. nov. (B), P. tukul sp. nov. (C), P. brevis sp. nov. (D), P. berbeda sp. nov. (E), P. lobulata sp. nov. (F), P. nr. aspersa (G) in dorsal view. Scale bar: 5 mm.

FIGURE 3. Faces of P. dischidia sp. nov. (A), P. paradischidia sp. nov. (B), P. tukul sp. nov. (C), P. brevis sp. nov. (D), P. berbeda sp. nov. (E), P. lobulata sp. nov. (F), P. nr. aspersa (G) in anterior views. Scale bar: 1 mm.

FIGURE 4. Male FWs of P. dischidia sp. nov. (A), P. paradischidia sp. nov. (B), P. tukul sp. nov. (C), P. brevis sp. nov. (D), P. berbeda sp. nov. (F), P. lobulata sp. nov. (G), P. nr. aspersa (H) and female FWs of P. brevis sp. nov. (E) and P. nr. aspersa (I) in dorsal views. Scale bar: 10 mm.

FIGURE 5. Male genitalia of Phaloria in dorsal (A, C, E, G, I, K, M) and ventral (B, D, F, H, J, L, N) views: P. dischidia sp. nov. (A, B), P. paradischidia sp. nov. (C, D), P. tukul sp. nov. (E, F), P. brevis sp. nov. (G, H), P. berbeda sp. nov. (I, J), P. lobulata sp. nov. (K, L), P. nr. aspersa (M, N). Scale bar: 1 mm.

FIGURE 6. Phaloria in the natural environment: probably P. dischidia sp. nov. male (A) and female (B) in Lobo; P. paradischidia sp. nov. from Kumawa (C); P. tukul sp. nov. in Lobo (D).

FIGURE 7. Calling song of Phaloria paradischidia sp. nov.: a sequence of five calling songs (A); a single calling song consisting of two syllables (B); spectral plot of a syllable (C).