Trigonoschema rubercella Crispolon & Guilbert, 2021

Crispolon, Elorde Jr. S., Guilbert, Eric, Yap, Sheryl A. & Soulier-Perkins, Adeline, 2021, New genus and new species of spittlebugs (Hemiptera: Cercopidae) from the Philippines, European Journal of Taxonomy 778, pp. 90-135 : 123-128

Trigonoschema rubercella Crispolon & Guilbert gen. et sp. nov.

urn:lsid:zoobank.org:act:02DFAF48-FC8F-45CE-BE52-FB1DD05626DF

Fig. 16

Diagnosis

In general shape, T. rubercella is similar to T. negrosensis but is distinctly different in color. T. rubercella presents a bright yellow pronotum followed by red band running on the basal parts of the tegmen and scutellum when T. negrosensis in dorsal view presents a dirty yellow pronotum followed by a light orange scutelum framed by yellow patches sprawling on the clavus of the tegmen.

Etymology

This species has a distinct red coloration in the network of cells at the apex of tegmen. The species name is a combination of two latin words “ruber” and “cella” respectively meaning red and cell. The name is placed in apposition.

Material examined

Holotype PHILIPPINES • ♂; “Philippines, Negros volcan Canlaon , forêt , 10º25'29" N, 123º05.36" E ”; “Muséum Paris, 1050 m; 28 Oct. 2010; D. Ouvrard Rec ”, “Muséum Paris, MNHN ( EH) 23638 ”, “séquençage par Elorde Crispolon C-00074”; MNHN.

Paratypes PHILIPPINES • ♂; “Philippines, Negros volcan Canlaon , champ de coqs , 10º25'29" N, 123º05'23" E ”, “Muséum Paris, Piège lumineux 932 m; 28 Oct. 2010; A. Soulier-Perkins rec.”, “Muséum Paris, MNHN ( EH) 24842 ”; MNHN • ♂; “ Philippines, Negros volcan Canlaon , forêt , 10º25'31" N, 123º05'40" E ”, “Muséum Paris, Piège lumineux 1098 m; 29 Oct. 2010; A. Soulier-Perkins rec.”, “Muséum Paris, MNHN ( EH) 24843 ”; MNHN • ♂; “ Philippines , Negros volcan Canlaon , forêt , 10º25'31" N, 123º05'43" E ”, “Muséum Paris, 1098 m; 30. Oct. 2010; D. Ouvrard Rec ”, “Muséum Paris, MNHN ( EH) 24844 ”; MNHN • ♂; “ Philippines, Negros volcan Canlaon , forêt , 10º25'31" N, 123º05'43" E ”, “Muséum Paris, Piège lumineux 1098 m; 30 Oct. 2010; A. Soulier-Perkins rec.”, “ UPLBMNH HEM-05058 ”; UPLBMNH . • ♂; “Philippines, Negros volcan Canlaon , forêt , 10º25'36" N, 123º05'37" E ”, “Muséum Paris, Piège lumineux 1057 m; 31 Oct. 2010; D. Ouvrard Rec ”, “ UPLBMNH HEM-05057 ”; UPLBMNH • 2 ♂♂; “Philippines, Negros volcan Canlaon , forêt , 10º25'36" N, 123º05'37" E ”, “Muséum Paris, Piège lumineux 1057 m; 31 Oct. 2010; A. Soulier-Perkins rec.”, “Muséum Paris, MNHN ( EH) 24845 ”, “séquençage par Elorde Crispolon C-00075”, “Muséum Paris, MNHN ( EH) 24846 ”; MNHN • ♂; “Philippines, Negros volcan Canlaon , forêt , 10º25'35" N, 123º05'51" E ”; “Muséum Paris, 1117 m; 2 Nov. 2010; D. Ouvrard rec.”, “Muséum Paris, MNHN ( EH) 23640 ”; MNHN .

Description

BODY LENGTH. 9.5–10.5 mm (tegmina included), width 4.5 mm.

HEAD ( Figs 1 , 16B ). In dorsal view, ocelli small, distance between eyes 9 times ocellus diameter ( Figs 1 , 16B ). Distance between ocellus and compound eye less than 4 times ocellus diameter ( Figs 1 , 16B ). Distance between ocelli 1.5 ocellus diameter ( Figs 1 , 16B ). Eyes not prominent, length 1.33 times than wide. Vertex slightly longer than wide. bearing a median longitudinal carina. Frons without carina. Postclypeus with dimple below margin of frons and a longitudinal furrow, swollen laterally and slightly ovoid shape in frontal view, widest part close to frons, not receding, prior to anteclypeus where it bends forming obtuse angle in lateral view ( Figs 1B , 16A ). Rostrum long, reaching but not surpassing mesocoxae.

THORAX ( Figs 2B , 16A–C ). In dorsal view, pronotum with anterior deep concavities on each side, much clearly marked in female, longitudinal median carina absent. Anterior margin of pronotum as wide as posterior margin of head including eyes, anterolateral margins curved, posterior margin grooved, postero-lateral margins slightly concave, slightly longer than anterolateral margins, humeral angle rounded. In lateral view, pronotum angle around 45º ( Figs 2B , 16A ). Scutellum as long as wide with large median dimple ( Fig. 16C ).

TEGMEN ( Fig. 16A–C ). R bifurcates on apical half, M bifurcate on basal third, apical reticulation not well developed without concave apical cells. Posterior wing ( Fig. 3A ). Rp separating from SC+Ra nearly at midlength, M reaches ambient vein, Cua and Cup fused at base and m-cu links M to Cua before Cua bifurcation, 7 longitudinal veins and 5 apical cells between SC+Ra and Cup, angular protrusion of costal margin near its base present. Metafemur with apical spine in inner margin and metatibiae bearing 1 lateral spine.

MALE TERMINALIA. In lateral view, posterior margin of pygofer ( Fig. 16E ) convex in middle with slight concavity toward ventral margin. Subgenital plates ( Fig. 16F ) with equal length relative to height of pygofer with fine appendage shorter than main plate directed posteriorly not forming acute angle with main plate, dorsal and ventral margin of main plate regularly curved. Sterno-lateral plates present, triangular shaped. Intermediate plates present, roughly boomerang-shaped linking internal sides of lateral plate and subgenital plate. Paramere ( Fig. 16G ) globose, dorsal margin convex then curving regularly and finishing with a sharp spine pointed dorsally, lateral margin with slightly and rounded, ventral margin roughly straight with subapical part angled largely protruding posteriorly then finishing with two sharp spines pointing postero-ventrally. Aedeagus ( Fig. 16H ) with dorsal margin making a right angle at its base, straight on a small portion before curving up regularly, apical part bending posteriorly and straight, apical extension pointing dorsally, posterior protrusion thick and beak-shaped, postero-dorsal protrusion absent.

COLOR. Head, legs, abdomen, scutellum and anterior part of pronotum red, rest of pronotum yellow, rostrum red, antennal scape and pedicel reddish orange, flagellum yellowish. Tegmen translucid yellow, basal and apical third including network of cells red.

Type Locality

Philippines: Visayas, Negros Occidental, Mount Kanlaon.

Distribution

Philippines: Visayas, Negros Island.

Molecular Phylogeny

Results of the Bayesian 50% consensus tree and ML analyses with likelihood score of −13870.493 are shown in Figures 17 and 18 respectively. The resulting topologies are not similar with respect to the placement of Jacobsoniella and Wawi . In the Bayesian topology ( Fig. 17 ), Jacobsoniella is recovered within a clade containing Eoscarta , Mioscarta , Poeciloterpa and Trigonoschema gen. nov. clades, each supported by a probability value (PPv) of 100%. This clade ( Eoscarta + Mioscarta + Poeciloterpa + Trigonoschema + Jacobsoniella ) is supported PPv of 82.61% and Wawi appears as sister group to it. However, the clade containing Wawi plus the five other genera is supported with a high PPv of 100%. In the ML analysis ( Fig. 18 ), Poeciloterpa and Trigonoschema gen. nov. are sister groups with a ML bootstrap value (MLBv) of 85.2/21% (SH-aLRT support/ standard bootstrap support). Then Mioscarta appears as sister group of ( Eoscarta + Wawi + (Poeciloterpa + Trigonoschema )). Jacobsoniella is recovered basally as sister of the other ingroup taxa and all together the ingroup clade is supported with a MLBv of 100/100% branch support.

Several key aspects of both topologies are similar. Regardless of the relationships of Eoscarta , Mioscarta , Poeciloterpa , Trigonoschema , Jacobsoniella and Wawi in both topologies the monophyly of each genus is well supported with a PPv of 100% and MLBv of 98.40/91%, 97.3/96%, 99.7/99% and 98.8/77% respectively. In both trees the ingroups are well supported with a PPv of 100% and MLBv of 100/100%.

Figures

Fig. 16. Trigonoschema rubercella Crispolon & Guilbert gen. et sp. nov. Holotype. Habitus and ♂ terminalia in lateral view. A. Lateral view. B. Frontal view. C. Dorsal view. D. Labels. E. Terminalia. F. Sterno-lateral, intermediate and subgenital plates. G. Paramere. H. Aedeagus.

Fig. 1. Head schematic representation with diameter of ocelli compared to distance between them and between ocellus and compound eye. A. Mioscarta Breddin, 1901. B. Trigonoschema Crispolon & Soulier-Perkins gen. nov. C. Poeciloterpa Stål, 1870.

Fig. 2. Schematic representation of the pronotum angle. A. Mioscarta Breddin, 1901. B. Trigonoschema Crispolon & Soulier-Perkins gen. nov. C. Poeciloterpa Stål, 1870.

Fig. 3. Posterior wings. A. Mioscarta sp. B. Poeciloterpa sp.

Fig. 17. Bayesian 50% consensus tree based on partitioned analysis of combined sequences Histone 3 + CO1 + 18S + 28S for Eoscarta Breddin, 1902, Jacobsoniella Melichar, 1914, Mioscarta Breddin, 1901, Poeciloterpa Stål, 1870, Trigonoschema Crispolon & Soulier-Perkins, gen. nov. and Wawi Soulier- Perkins & Le Cesne, 2016 species with Clastopteridae, Machaerotidae and Aphrophoridae as outgroup. Numbers indicated at each resolved nodes are posterior probability values presented in %. Branches are colored according to genus.

Fig. 18. Maximum likelihood topology (likelihood score of −13870.493) for Eoscarta Breddin, 1902, Jacobsoniella Melichar, 1914, Mioscarta Breddin, 1901, Poeciloterpa Stål, 1870, Trigonoschema Crispolon & Soulier-Perkins, gen. nov. and Wawi Soulier-Perkins & Le Cesne, 2016 species with Clastopteridae, Machaerotidae and Aphrophoridae as outgroup based on analyses of combined sequences (CO1, Histone 3, 18S, and 28S). Support statistics from a ML bootstrap value (SH-aLRT support % / standard bootstrap support %) are indicated at each resolved node. Branches are colored according to genus.