Metrodorini
|
publication ID |
https://doi.org/10.11646/zootaxa.5597.1.1 |
|
publication LSID |
lsid:zoobank.org:pub:E8B87293-0CCD-469D-9F2F-17F1AB4919BF |
|
persistent identifier |
https://treatment.plazi.org/id/542B87FD-FFA8-0411-9FDE-C77FFAD1FCE7 |
|
treatment provided by |
Plazi |
|
scientific name |
Metrodorini |
| status |
|
Tribe Metrodorini Bolívar, 1887
Type genus: Metrodora Bolívar , 1887.
Emended description. Body mostly robust ( Figs. 1A View FIGURE 1 , 4A View FIGURE 4 , 12A View FIGURE 12 , 60 View FIGURE 60 , 73 View FIGURE 73 ), but with slender species ( Figs. 64 View FIGURE 64 , 68 View FIGURE 68 ), and small to medium size species (4–16 mm.). Head little exserted (i.e., top of head slightly surpassing the anterior margin of pronotum in lateral view); upper margin of the vertex approximately at the level of the upper margin of the compound eyes; vertex approximately two or more times wider than the eye; carinae of the vertex produced, with lateral carinae forming more or less pronounced horns and medial carina visibly compresso-elevated (i.e., slender and elevated) ( Figs. 1D View FIGURE 1 , 7A View FIGURE 7 , 29A View FIGURE 29 ), extremely in Miriatra ( Figs. 63A View FIGURE 63 , 64D View FIGURE 64 , 67A View FIGURE 67 , 68B View FIGURE 68 ). In lateral view, medial carina usually protrudes beyond the eyes, at least slightly visible ( Figs. 26B View FIGURE 26 , 34B View FIGURE 34 , 47B View FIGURE 47 , 67B View FIGURE 67 ) (in Metrodora s. str. and Platytettix stat. resurr. not protrudes ( Figs. 1A View FIGURE 1 , 10B View FIGURE 10 )). Anterior margin of the vertex rounded; fastigium of the vertex not forming an elongated horn, dorsum without fossulae ( Figs. 1E View FIGURE 1 , 10C View FIGURE 10 , 67C View FIGURE 67 ). Antennal groves located below the lower margin of the eyes, and antennae usually short, with 10–15 segments ( Figs. 10C View FIGURE 10 , 22C View FIGURE 22 , 67B View FIGURE 67 ). Scutellum mostly wide 1.5–3 times wider than scape ( Figs. 10A View FIGURE 10 , 26C View FIGURE 26 , 34A View FIGURE 34 ), rarely narrow; frontal costa mid-sized, bifurcation variable from around the mid-level of the eyes to below the ventral margin of the eyes ( Figs. 1D View FIGURE 1 , 22A View FIGURE 22 , 57A View FIGURE 57 , 71C View FIGURE 71 ). Eyes subglobose, with rounded dorsal surface and almost straight ventral margin, occupying a quarter or a fifth of the cephalic capsule in lateral view. Lateral ocelli between the middle or inferior part of the eyes, near the base from where each branch of the fascial carinae diverges; medial ocellus close to the lower margin of the scutellum; palpi with last three segments flattened, first two segments short and nearly cylindrical ( Figs. 1D View FIGURE 1 , 10A View FIGURE 10 , 22A View FIGURE 22 , 26C View FIGURE 26 , 34A View FIGURE 34 , 57A View FIGURE 57 , 71C View FIGURE 71 ). Thorax. Pronotum mostly robust (slender only in Miriatra ( Figs. 64 View FIGURE 64 , 66 View FIGURE 66 , 68A View FIGURE 68 )); variable in shape; median carina with different elevations, forming crests, humps ( Figs. 10B View FIGURE 10 , 12A View FIGURE 12 , 26A View FIGURE 26 , 60B View FIGURE 60 ), or flat ( Figs. 30A View FIGURE 30 , 42A View FIGURE 42 ); dorsal surface of pronotum, between the carinae, granulate, median carina continuous from the anterior margin to the posterior apex, with anterior margin straight (few taxa have it extended towards the front) and apex truncated or acute ( Figs. 1C View FIGURE 1 , 9B View FIGURE 9 , 21B View FIGURE 21 , 60A View FIGURE 60 , 66B View FIGURE 66 ). Lateral lobes of the pronotum, in lateral view, quadrangular; in dorsal view lower margins mostly well-projected to the sides, directed slightly sidewards, and with rounded or acute apex ( Figs. 1E View FIGURE 1 , 10C View FIGURE 10 , 30B View FIGURE 30 ). Humeral angle wide, obliquely concave; infrascapular area wide (narrow only in winged species), with different lengths, reaching between the third and ninth abdominal segment in lateral view; lateral area arising on the dorsal undulation of the infrascapular area, with similar width and reaching the apex in lateral view (although in some taxa the lateral area is poorly developed). Wings. Most species apterous, with few exceptions, such as Miriatra (hind wings reaching the apex of the pronotum ( Figs. 66 View FIGURE 66 , 69 View FIGURE 69 )) and † Electrotettix (rudimentary hind wings). Legs. Fore and mid-femora compressed, with or without conspicuous undulations, sometimes forming some prolongations. Mid-femur dorsally carinated. Hind femur with uniform coloration on the external surface; genicular and antegenicular teeth moderately or well-developed ( Figs. 12A View FIGURE 12 , 19A View FIGURE 19 , 26A View FIGURE 26 ) (poorly developed only in Rehniatria gen. nov. ( Figs. 71A View FIGURE 71 , 72 View FIGURE 72 )). Hind tibia scarcely ampliated near the apex; first and third segments of the hind tarsi equal in length.
Abdomen. Male: last segments constricted in different levels, and tapering dorsally, joining towards distal portion ( Figs. 8B View FIGURE 8 , 11B View FIGURE 11 , 16F View FIGURE 16 ); penultimate sternite variable, longer or as long as the subgenital plate; cerci conical and reduced ( Figs. 8A View FIGURE 8 , 11D View FIGURE 11 , 16G View FIGURE 16 ). Subgenital plate short, cupuliform, apex rounded ( Figs. 8C View FIGURE 8 , 11B View FIGURE 11 , 16H View FIGURE 16 ) ( Rehniatria gen. nov. with a conspicuous incision at the apex ( Figs. 72B View FIGURE 72 ), and Bolivaridora gen. nov. with a small mid notch ( Figs. 51H View FIGURE 51 )). Female: epiproct triangular or ovoid, with or without medial groove ( Figs. 18C View FIGURE 18 , 22F View FIGURE 22 ). Subgenital plate of variable shape, mainly quadrangular ( Figs. 18E View FIGURE 18 , 22H View FIGURE 22 , 39D View FIGURE 39 , 67H View FIGURE 67 ). Lower valves of ovipositor covered or not by the lateral edges of the subgenital plate; valves armed with medium-sized teeth ( Figs. 18D View FIGURE 18 , 22G View FIGURE 22 , 67G View FIGURE 67 ).
Remarks. Recently, the tribe was delimited by Kasalo et al. (2023a). The diagnosis provided by the authors is useful for differentiation with the other suprageneric taxa of the subfamily, and they also synonymized the tribes Miriatrini and Mucrotettigini under Metrodorini . In this contribution, specimens from different genera and species were reviewed to analyze additional characters, and we partially agree with Kasalo’s et al. (2023a) proposal. We included the synonymized tribes as subtribes, which are differentiated in the following taxonomic key.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.