Brachyphisis viettei Chopard, 1957

Hugel, Sylvain, 2010, New and little known predatory katydids from Mascarene islands (Ensifera: Meconematinae and Hexacentrinae), Zootaxa 2543, pp. 1-30 : 18-19

publication ID

https://doi.org/ 10.5281/zenodo.196716

DOI

https://doi.org/10.5281/zenodo.5612770

persistent identifier

https://treatment.plazi.org/id/03B19568-250E-FFC6-DCE5-C0AFFA191A4F

treatment provided by

Plazi

scientific name

Brachyphisis viettei Chopard, 1957
status

 

Brachyphisis viettei Chopard, 1957 View in CoL

( Figs. 51–56 View FIGURES 51 – 62 , 63–64 View FIGURES 63 – 66 , 67–69 View FIGURES 67 – 72 , 73 View FIGURES 73 – 74 ; Tab. 5)

Brachtyphisis viettei Chorpard, 1957: 38 (original description), Jin & Kevan, 1992: 29 (redescription).

Type locality. Indian Ocean, Mascarene archipelago, île de la Réunion, Saint-Philippe, forêt du brûlé de Mare Longue.

Holotype. Female. Saint-Philippe, forêt du brûlé de Mare Longue, 3.II.1955, MNHN (MNHN- ENSIF 649).

Neallotype. Male. la Réunion, Saint Philippe, Mare Longue, départ sentier botanique, 190 m alt., 21°21’20’’S 55°44’23’’E, 23.IV.2007, S. Hugel, MNHN (MNHN-ENSIF2656).

Other specimens examined. Males. 23, same as male neallotype, 23.IV.2007, S. Hugel leg. and coll.. 13, same as neallotype, 11.XI.2009 (REU2009 040), S. Hugel leg. and coll.. 13, la Réunion, Saint Philippe, hauts de Mare Longue, 421 m alt., 21°20’47’’S 55°44’22’’E, 11.XI.2009 (REU2009 042), S. Hugel, CIRAD Réunion. 13, la Réunion, Ravine de la Grande Chaloupe, petit Bon Dieu (remontée sur la crête), Alt. 570 m, 20°55’41’’S, 55°23’18’’E, 4.XI.2009 (REU2009 039), S. Hugel. Females. 1Ƥ, same as neallotype, 11.XI.2009 (REU2009 041), S. Hugel leg. and coll.. 1Ƥ, same as neallotype, 15.XII.2005, S. Hugel, CIRAD Réunion. 1Ƥ, same as neallotype, IV.2004, S. Hugel leg. and coll. ab larva. 1Ƥ, la Réunion, Piton Montvert, N. Cliquennois, S. Hugel coll..

Description. See Jin & Kevan, 1992: 29.

Description complement. In addition to generic characters.

Male. Wings. ( Fig. 67–68 View FIGURES 67 – 72 ). Left FW with 88–102 (average: 96) lamellar teeth ( Fig. 69 View FIGURES 67 – 72 ). Terminalia. Paraproct. Only slightly exceeding the epiproct ( Fig. 51, 53 View FIGURES 51 – 62 ). Cerci. Bent inward in the middle ( Fig. 51 View FIGURES 51 – 62 ). Subgenital plate. With a wide emargination (i.e. inter styli width; Fig. 52, 53 View FIGURES 51 – 62 ); lateral margins moderately converging towards distal end. Genitalia. Epiphallus cephalic lobe distal end broadly rounded (dorsal view; Fig. 56 View FIGURES 51 – 62 ); with a sub apical enlargement of the neck (more or less distinct depending on the specimen; moderately visible on Fig. 53 View FIGURES 51 – 62 ); the general curvature in side view varies on different specimens and seems not a reliable character ( Fig. 55 View FIGURES 51 – 62 ).

Bioacoustics. Fig. 73 View FIGURES 73 – 74 . Males are singing by night hours usually on the higher branches of endemic Sapotacae. Males are sometimes moving while calling. Above 20°C, the call of B. viettei consists of long echeme-sequences (> 1 min); echeme-sequences are made of disyllabic echemes repeated at the rate of 4.7– 8.3 disyllabic echeme/s (average: 6.4); disyllabic echeme duration: 57–82 ms (average: 71.9 ms); interdisyllabic echeme interval: 39–103 ms (average: 75.8 ms). Echeme sequences are seldom interrupted by short breaks. Trains of waves forming the disyllabic echemes are not resolved in natura with our recording setup (n = 5 specimens recorded). The fundamental peaks between 17–20 kHz.

Distribution. This species is distributed in some patches of preserved forest areas of the western side of Réunion. Curiously, I failed to record it on eastern Réunion, but this might be due to undersampling. Most of the localities are below 700 m, but I recorded the species at higher altitudes (917 m at Serré de Grand Coude). The localities are both on the most humid places of the island (Mare Longue) and in very dry areas (Grande Chaloupe) and ridges (Serré de Grand Coude), indicating the wide tolerance of this species regarding precipitations.

Biology. As its sister species from Mauritius, adults of B. viettei were always observed on endemic Sapotacae trees. Males were singing by night near trees tops. Juvenile specimens are apparently occurring in lower strata (undergrowth vegetation, ferns or 1–2 m plants). In captivity juveniles eat various insects (trigonidiine crickets, Diptera, Moths). The specimens are usually not falling (grasping the leaves) when branches are shaken, this species is therefore difficult to collect by beating techniques.

Body Head Pronotum Tibia Femora FW O

I II III I II III III

L L W L W H L L L L L L W L W L W

3Neallotype 15.5 1.8 3.6 5.0 4.2 2.6 7.5 7.0 12.6 7.0 5.5 12.2 2.5 15.7 3.8 ƤHolotype 19.0 5.5 14.0 17.5 11.0 3 (n=4) min 15.5 1.8 3.2 5.0 4.0 2.3 7.5 6.6 12.6 7.0 5.5 12.0 2.5 15.7 3.8 max 17.9 2.1 3.6 5.1 4.3 2.7 9.5 7.4 13.6 7.7 6.2 13.0 2.7 17.2 4.3 average

16.5 2.0 3.4 5.0 4.2 2.5 8.1 7.1 13.1 7.3 5.9 12.4 2.6 16.5 4.1

Ƥ (n=5) min 16.5 1.8 3.2 4.7 3.9 2.1 8.0 7.4 13.2 7.2 5.3 13.0 2.5 17.3 4.0 10.5 1.3 max 19.5 2.3 3.6 5.5 4.5 2.5 8.5 7.6 14.5 7.7 6.5 14.0 2.8 18.0 5.2 12.2 1.4 average

18.2 2.1 3.5 5.2 4.2 2.3 8.2 7.5 13.9 7.6 6.0 13.4 2.6 17.6 4.6 11.4 1.4

Pronotum W: maximal width, including the lateral lobes. Femora W: maximal width. FW W, O W: width on the middle.

MNHN

Museum National d'Histoire Naturelle

CIRAD

Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Tettigoniidae

Genus

Brachyphisis

Loc

Brachyphisis viettei Chopard, 1957

Hugel, Sylvain 2010
2010
Loc

Brachtyphisis viettei

Jin 1992: 29
1992
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