Research Article |
Corresponding author: David R. Smith ( sawfly2@aol.com ) Academic editor: Marko Prous
© 2017 David R. Smith, Claire Villemant.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Smith D, Villemant C (2017) Additions to the xiphydriid woodwasp (Hymenoptera, Xiphydriidae) fauna of New Caledonia. Journal of Hymenoptera Research 61: 65-74. https://doi.org/10.3897/jhr.61.21787
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Calexiphyda marystellae Villemant & Smith, sp. n., is described from New Caledonia. This is the sixth species of Xiphydriidae known from New Caledonia. A key to the six species is given, the female of C. crocea Smith is described, and a new locality for this species and for C. caledonia Smith is given.
New Caledonia, high-altitude forest, Calexiphyda , Xiphydriidae
Three additional specimens were recently collected in New Caledonia by CV. One is an undescribed species, one is the female of a previously described species, and one was previously described but from another locality. Here, we add these discoveries to the xiphydriid fauna and give an updated key to species on the island. There are now six species known from New Caledonia, five based on females and one based on a male. New Caledonia now has the largest xiphydriid fauna of any of the Pacific islands. Three are known from New Zealand (
Where known, larvae of xiphydriids are wood borers in weakened or dying limbs of woody plants. Nothing is known of the biology of the New Caledonian species (
Specimens were collected by CV in the course of the “Our Planet Reviewed” project (http://laplaneterevisitee.org/en) during the “New Caledonia 2016-2017” expedition. All are deposited in the Muséum National d’Histoire Naturelle, Paris, France.
Insect collection was performed in November 2016 in the southeastern part of the island, where the mountains exposed to the Pacific Ocean have been little explored, hence the name of “Côte Oubliée” given to the coastal massif. Three stations, two in the mountains (Comboui and Kwakwé) and one in the Ouinné Valley, were inventoried using Malaise traps placed for ten days in five plots of every station. In addition, height groups of three yellow pan traps were set up in the Comboui station in or close to the Malaise trap sites. This station was located 12 km from the coast, near Mount Bwa Bwi (1,214 m) above a forest valley whose streams flow into the Néma River. Traps were located along a transect set up from a dense scrub habitat on the Bwa Bwi slope to a tropical high-altitude forest on the crest and a dense humid forest of low and medium altitude on igneous substrate in the forest bottom (Muzinger and Bruy, pers. com.).
The three xiphydriids collected during this mission were caught in yellow pan traps located on the crest in the dense and humid high-altitude forest. This forest, showing a typical facies with lichens, bryophytes and Hymenophyllaceae, was rather low, with a canopy about 12 m high and some emerging trees up to 15 m (Muzinger and Bruy, pers. com.).
Images were acquired through an EntoVision micro-imaging system. This system included a Leica M16 with a JVC KY-75U 3-CCD digital video camera or a GT-Vision Lw11057C-SCI digital camera attached that fed image data to a notebook or desktop computer. The program Cartograph 6.6.0 was then used to merge an image series into a single in-focus image.
Morphological terminology follows
1 | Female | 2 |
– | Male | 6 |
2 | Hind wing with cells Rs and M absent; hind tarsal claw simple; mesopleuron shiny; mesonotum rugose, without carinae (antennomeres 1 and 2 orange; legs orange with apical tarsomeres black) (see |
Lissoxiphyda tripotini Smith |
– | Hind wing with cells Rs and M present; hind tarsal claw with inner tooth; mesopleuron usually rugose (except C. crocea); mesonotum usually with longitudinal or transverse carinae (except C. crocea) (Calexiphyda) | 3 |
3 | Black with mid and hind tibiae, mid and hind tarsi, and sheath orange (Fig. |
C. caledonia Smith |
– | Some yellow markings on head (Figs |
4 |
4 | Head with two longitudinal stripes on vertex, inner orbits, spots between antennae, and genae yellow; thorax with posterior margin of pronotum yellow; legs black with inner surfaces of tibiae reddish brown; anteromedian part of mesonotum with transverse carinae (see |
C. blanki Smith |
– | Head mostly black with yellow spots on lower inner orbits and between antennae (Figs |
5 |
5 | Anteromedian part of mesonotum shiny with very fine punctures and microsculpture (Fig. |
C. crocea Smith |
– | Anteromedian part of mesonotum with faint, irregular, longitudinal carinae on posterior half (Fig. |
C. marystellae sp. n. |
6 | Mostly orange with black mesonotal lateral lobes; head and body shiny (see |
C. crocea Smith |
– | Mostly black; mesonotum with longitudinal carinae, frons and mesopleuron rugose (see |
C. novacaledonica Jennings & Austin |
Female: Length, 7.0 mm. Black; head with yellow spots between antenna and eye and between antennae (Fig.
Male: Unknown.
Female, “Nouvelle Calédonie, Province Sud, Thio, Comboui, 21.77742S, 166.29495E, 1037 m, NC-COM-YPT3 12-18.XI.2016, yellow pan trap, C. Villemant rec.”
This species is described in honor of Mary-Stella Guelemé, a New Caledonian participant to the “Our Planet Reviewed” expedition who contributed with another manager of the Comboui camp to maintain morale of the team when bad weather conditions retained it longer than expected on the Bwa Bwi slope.
The black head and body with only three white spots on the front of the face and one white spot laterally on tergite 1, light orange tibiae and tarsi, and faint, irregular, longitudinal sculpture of the mesonotum (Fig.
Calexiphyda
crocea
Female. Length, 7.0 mm. Head black with lower inner orbits narrowly white and two pale orange stripes on vertex (Figs
Male: Length 6.5 mm. Color and structure similar to female (see
Female, “Nouvelle Calédonie, Province Sud, Thio, Comboui, 1037 m (21.77742S, 166.29495E) NC-COM-YPT-3, 12-18.XI.2016, yellow pan trap, C. Villemant rec.”
Although descriptions of unassociated males are discouraged,
Calexiphyda
caledonia
Female: Length, 21 mm. Black with mid and hind tibiae and tarsi and sheath orange, white spots laterally on first tergite (Fig.
Male: Unknown.
Female, “Nouvelle Calédonie, Province Sud, Thio, Comboui, 1040 m (21.77805S, 166.29472E), NC-COM-YPT8 17-19.XI.2016, yellow pan trap, C. Villemant rec.“
This species is recognized by its black color with the contrastingly orange tibiae, tarsi, and sheath (Fig.
The “Our Planet Reviewed-New Caledonia 2016–17” expedition was organized by Pro-Natura International and the Muséum National d’Histoire Naturelle (MNHN, France), in partnership with the Conservatoire d’Espaces Naturels (CEN), the New Caledonian Provinces Sud and Nord, and the Institut de Recherche pour le Développement (IRD-Nouméa). It was founded by the New Caledonian government as well as Provinces Sud and Nord, the “Maison de la Nouvelle Calédonie” in Paris, the Ministère des Outre-mers as well as some New Caledonian private companies (Office des Postes et Télécommunications, Enercal) and have benefited of in-kind contributions from Air Calin and Toyota-Nouméa. Access & Benefit Sharing number: APA-NCPS-2016-025.
We thank all the participants for their contribution to the mission with a special mention to Jérome Muzinger and Bavid Bruy for the botanical data, to Eddy Poirier for setting up the Malaise traps, to Mary-Stella Guemelé and Isabelle Brun who greatly contributed to the good organization of the Comboui camp on the Bwa Bwi slope and to Fabrice Vandelannoote the helicopter pilot without whom we could not have accessed to this high altitude camp.
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