Plangiopsis nouabalensis, Massa, 2023

Massa, Bruno, 2023, Biodiversity hotspot in the Sangha Trinational Protected Area revealed through Orthoptera Tettigoniidae, Zootaxa 5331 (1), pp. 1-67 : 16

publication ID

https://doi.org/ 10.11646/zootaxa.5331.1.1

publication LSID

lsid:zoobank.org:pub:85D2BD10-1F94-44DF-98C9-9312A28EE584

DOI

https://doi.org/10.5281/zenodo.8260979

persistent identifier

https://treatment.plazi.org/id/1913E314-79D4-4D12-9DAC-A64DBBC42DFD

taxon LSID

lsid:zoobank.org:act:1913E314-79D4-4D12-9DAC-A64DBBC42DFD

treatment provided by

Plazi

scientific name

Plangiopsis nouabalensis
status

sp. nov.

Plangiopsis nouabalensis n. sp.

Figs. 5a View FIGURE 5 , 8a View FIGURE 8 , 10a View FIGURE 10 , 11a View FIGURE 11 , 12a View FIGURE 12 , 13a, 13b View FIGURE 13

urn:lsid:zoobank.org:act:1913E314-79D4-4D12-9DAC-A64DBBC42DFD

Material examined. Republic of Congo, Sangha prov. , N-N NP, Bomassa camp (secondary forest) (353m), 02°12’36.9”N, 16°11’30.2”E, 18.VI–3.VII.2022, MV Light Trap, V. Dérozier (♂ holotypus) GoogleMaps ; Republic of Congo, Sangha prov. , N-N NP, Mbeli camp ( Gilbertiodendron forest) (341m) 02°14’23.8”N, 16°23’52.1”E, 1–10.X.2022, MV light trap, V. Dérozier, B. Fouka, A. Kirk-Spriggs, H. Takano (1♀ paratypus) ( ANHRT) GoogleMaps ; Republic of Congo, Sangha prov., N-N NP, Makao camp (secondary for.) 02°35’42.2”N, 17°10’08.3”E, 23–29.IX.2022, MV Light Trap, V. Dérozier, B. Fouka, A. Kirk-Spriggs, H. Takano (1♂ paratypus) ( BMPC) GoogleMaps .

Description. Male. General habitus & colour. Medium-sized species, green. Head and antennae. Antennae thin. Fastigium of vertex about 2.0 times as wide as scapus of antenna; fastigium verticis meeting equally broad fastigium of frons along a horizontal line; face smooth ( Fig. 5a View FIGURE 5 ); eyes round. Thorax. Pronotum longer than high, with evident lateral, anteriorly converging carinae, flat and dotted disc, anterior margin broadly incurved, posterior margin rounded ( Figs. 8a View FIGURE 8 , 10a View FIGURE 10 ). Wings. Both pairs of wings fully developed; tegmina rounded at tips, narrow, 3.3 times longer as broad. Stridulatory file arched, consisting of ca. 40 teeth, from the inside towards the external margin always wider between them and thicker ( Fig. 12a View FIGURE 12 ). Legs. Fore coxa armed. Fore femora dorsally unarmed, ventrally with 3 spines. Mid legs lacking. Hind femora with 7 ventral outer and inner spines. Fore tibiae with conchate tympanum on inner side and open tympanum on outer side, with a ventral double row of 4 spines. Hind tibiae with double row of 12 spines on ventral side and many on dorsal side; 3 sclerotized spurs on each side. Abdomen. Last abdominal tergite unmodified. Cerci long, stout, apically narrowing and incurved with a very small apical spine. Subgenital plate straight with two styli ( Figs. 13a–13b View FIGURE 13 ).

Female. Same characters of the male, ovipositor gently upcurved, subgenital plate triangular and pointed.

Diagnosis. P. nouabale nsis n. sp. is characterized by the lateral carinae of pronotum anteriorly converging, cerci long and incurved and stridulatory file of ca. 40 teeth, from the inside towards the external margin wider between them and thicker.

Measurements. Males. Body length: 21.8–22.2; length of pronotum: 6.1–6.2; height of pronotum: 4.9–5.0; length of tegmina: 38.6–39.5; depth of tegmina: 11.6–12.6; length of hind femora: 14.9–15.4. Female. Body length: 21.5; length of pronotum: 5.1; height of pronotum: 4.7; length of tegmina: 33.6; depth of tegmina: 10.2; length of hind femora: 12.9; length of ovipositor: 5.2.

Etymology. P. nouabalensis n. sp. is named after the National Park of Nouabalé-Ndoki ( Republic of Congo).

Affinities. Figs. 5a–5d View FIGURE 5 show the face of P. nouabalensis n. sp., P. foraminata , P. adeps and P. semiconchata . Compared to the other species, the fastigium of the vertex is clearly wider in P. semiconchata . The shape of the tegmina of P. nouabalensis n. sp. is more similar to that of P. adeps than to the other species ( Figs. 8a, 8d View FIGURE 8 , 10a, 10c View FIGURE 10 ). The carinae of the pronotum of P. nouabalensis n. sp. are not denticulate as in P. semiconchata ( Figs. 10a, 10b View FIGURE 10 , 11a, 11b View FIGURE 11 ) and in Plangiola herbacea ( Fig. 10e View FIGURE 10 ), but are more similar to those of P. foraminata ( Fig. 11c View FIGURE 11 ). The stridulatory area of P. nouabalensis n. sp. ( Fig. 11a View FIGURE 11 ) is more similar to those of P. semiconchata ( Fig. 11b View FIGURE 11 ) and P. adeps ( Fig. 11d View FIGURE 11 ) than to that of P. foraminata ( Fig. 11c View FIGURE 11 ), the stridulatory file of P. nouabalensis n. sp. ( Fig. 12a View FIGURE 12 ) is very different from those of P. foraminata ( Fig. 12b View FIGURE 12 ) and P. semiconchata ( Fig. 12c View FIGURE 12 ) and more similar to that of P. adeps ( Fig. 12d View FIGURE 12 ). Finally, cerci and subgenital plate of male and female of P. nouabalensis n. sp. ( Figs. 13a, 13b View FIGURE 13 ) are more similar to those of P. adeps ( Figs. 13c, 13d View FIGURE 13 ) than to those of the other two species of Plangiopsis ( Figs. 14a, 14d View FIGURE 14 ). Finally, P. adeps has a bigger size than the new species (body size: 24.5–26.5 mm).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Tettigoniidae

Genus

Plangiopsis

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