Mecopoda Serville, 1831
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publication ID |
https://doi.org/ 10.11646/zootaxa.5005.2.1 |
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publication LSID |
lsid:zoobank.org:pub:6DF7D106-A8FD-4670-AC09-18166D7F4BD4 |
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DOI |
https://doi.org/10.5281/zenodo.5856205 |
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persistent identifier |
https://treatment.plazi.org/id/038387A4-FFB5-777B-FF4F-F92FFA3E9537 |
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treatment provided by |
Plazi |
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scientific name |
Mecopoda Serville, 1831 |
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Mecopoda Serville, 1831 View in CoL
Taxonomic remarks. Gorochov (2020) included the genus Eumecopoda and his new Paramecopoda as subgenera in Mecopoda based on their morphological similarity and because „the subgeneric position of some species is somewhat problematic“. However, the latter problem cannot be solved by downgrading, and all Eumecopoda species (including Paramecopoda) are characterized by falcate tegmina (see also below under Eumecopoda ). Until genetic data are available we consider the two groups as separate genera.
Eumecopoda genus stat. rev.
Generic characters (after Liu et al. 2020).
Diagnostic characters. Large-sized species (habitus see e.g., fig. 4 in Liu et al. 2020). Fastigium verticis widened anteriorly. Head sulcate, with or without transverse lateral apices. Disc of pronotum flat, with truncate anterior and obtusely angular posterior margins, and distinct lateral carina. Tegmina surpassing apices of posterior femur. Prosternum bispinose. Male cerci with incurved apices, at tip with two minute acute teeth ( Fig. 3–4 View FIGURE 3 View FIGURE 4 ) as in many other mecopodine genera. Male subgenital plate elongate, with styli and distinct apical notch. Ovipositor robust, elongate, sword-like.
Redescription. Head. Fastigium verticis widely truncated and 1.5–3 times wider than scapus. Thorax. Pronotum elongated and broadened backward. Male pronotum narrowest in the beginning of prozona, broadened backward after the first transverse sulcus. Disc of pronotum flat with the exception of distinct depression around the sulcus. Legs robust and long. Anterior coxa armed with a spine. Anterior femur longer than pronotum. Anterior and median femora with indistinct tiny spines on ventro-anterior margin; posterior femora with a few small spines near apex on ventro-posterior margin. Each tibia with fine spines on each margin. Tympana on the fore tibiae fully open on both sides, tibia widened at and abruptly constricted below tympana. Female pronotum similar to that of male in general, but less broadened backward especially in the ending of metazona. Wings. Male tegmina well developed, extending beyond abdominal apex and surpassing apex of hind femur. Large and often complicated mirror cells near base of the right tegmen ( Fig. 13 View FIGURE 13 ). Number of stridulatory teeth between 44 and 139 (see Fig. 11 View FIGURE 11 ), the lowest number observed in M. paucidens sp. nov. and the highest in M. prominens Gorochov, 2020 . Female tegmina also well developed extending beyond apex of abdomen, but distinguished from male tegmina by length and shape.
Key to species (partly after Redtenbacher 1892)
1 fastigium verticis rounded, no transverse keel; gap between fastigium frontis and fastigium verticis closed or separated by a fine suture; mirror on right male tegmen pretzel-shaped ( Fig. 1 View FIGURE 1 , Fig. 13 A–P View FIGURE 13 )..................... Mecopoda elongata View in CoL group
1’ fastigium verticis blunt, with transverse keel; gap between fastigium frontis and fastigium verticis distinct; Fig.14 View FIGURE 14 ); mirror on right male tegmen in shape roundish ( Fig. 13 O–N View FIGURE 13 ).......................................................... 2
2 male subgenital plate broad with a small caudal incision ( Fig. 17 A View FIGURE 17 ).............................. Mecopoda angusta View in CoL .
2’ male subgenital plate long and fork-like ( Fig. 17 B, C View FIGURE 17 )........................................................ 3
3 body small, tegmina short (see Tab. 5 View TABLE 5 ; only one male known; Sumatra)................ Mecopoda kerinci Gorochov, 2020 View in CoL
3’ larger............................................................................................... 4
4 gap between fastigium frontis and fastigium verticis wide, deep................................. Mecopoda dilatata View in CoL
4’ gap between fastigium frontis and fastigium verticis subtle.................................... Mecopoda divergens View in CoL
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