Steirodon (Peucestes), 1874
publication ID |
https://doi.org/10.31610/trudyzin/2025.329.1.13 |
persistent identifier |
https://treatment.plazi.org/id/03EF2A2F-5F6F-976D-FCF0-F913F5E9FE8B |
treatment provided by |
Felipe |
scientific name |
Steirodon (Peucestes) |
status |
sp. nov. |
Steirodon (Peucestes) View in CoL para Gorochov sp. nov.
( Figs 6–10 View Figs 1–15 , 18–20 View Figs 16–23 , 26, 27 View Figs 24–37 , 44–52 View Figs 38–57 )
Etymology. This species is named after the Brazilian state (Para) where it was collected.
Type material. Holotype – male, BRAZIL: “Brasilia ex coll. Fruhstorfer ”, “Para” ( ZIN) . Paratypes: 2 females with same data as for holotype ( ZIN) .
Description. Male (holotype). General appearance typical of this subgenus, but body coloration uniformly greenish with lighter (almost yellowish) inner (dorsal) parts of dorsolateral pronotal denticles ( Figs 7, 10 View Figs 1–15 ), and body structure with following features: upper rostral tubercle short and wide as well as having very shallow longitudinal median concavities dorsally and apically; lower rostral tubercle also short, slightly wider than upper one, almost flat anteriorly, with upper part truncate and having narrow but rather deep longitudinal median sulcus distinctly not reaching median ocellus (as in Fig. 6 View Figs 1–15 ); pronotum with rather wide disc (its anterior edge barelysinuate, but posterior one convex, roundly obtuse-angled), distinctly arcuate (in profile) dorsolateral denticulate keels (denticles of these keels rather short, not longer than wide, and directed slightly more aside than upwards; Fig. 7 View Figs 1–15 ), and lateral lobes as in Fig. 10 View Figs 1–15 ; tegmina long and moderately narrow (approximately 3.5 times as long as wide), with venation as in Figs 19 View Figs 16–23 , 26, 27 View Figs 24–37 , and with stridulatory vein of left tegmen which about 5.5 mm in length and having nearby 90 ventral teeth ( Fig. 20 View Figs 16–23 ); hind wings approximately as in S. (S.) superbum sp. n.; fore leg with tympana as in Figs 44, 45 View Figs 38–57 ; middle and hind legs with slightly and distinctly widened proximal parts of tibiae, respectively ( Figs 46, 47 View Figs 38–57 ); abdomen with straight (truncate) posterior edge of last tergite, barely sinuate (more or less truncate) apex of genital plate, almost triangular epiproct, rather long and thin styli, and cerci typical of this subgenus ( Figs 48–50 View Figs 38–57 ).
Female. General appearance ( Figs 6, 8, 9 View Figs 1–15 ) as in male, but body somewhat larger, tegmina wider (almost 3 times as long as wide; Fig. 18 View Figs 16–23 ) and without well developed stridulatory apparatus; abdominal apex ( Fig. 51, 52 View Figs 38–57 ) similar to that of female of S. (S.) superbum sp. nov., but ninth abdominal tergite with a pair of extremely small (almost indistinct) lobules located very near each other.
Length (mm). Body: male 42, female 53–57; body with wings: male 89, female 102–107; pronotum: male 14, female 16–16.5; tegmina: male 77, female 84–88; hind femora: male 37, female 40–41; ovipositor 7–7.5.
Comparison. The new species is distinguished from all true and possible species of this subgenus by the following characters: from S. (P.) coronatum , by light and less long dorsolateral pronotal denticles as well as uniformly greenish tegmina (vs: the pronotal denticles are darkened, longest of them are clearly longer than wide, and the tegmina have darkened stripes along Sc stem and along the anal edge); from S. (P.) championi , by the same pronotal characters and distinctly narrower female tegmina (in S. championi , the female tegmina are almost 2.5 times as long as wide); from S. (P.) latipennis , by slightly higher and more angular pronotal denticles as well as by the same tegminal character as from S. (P.) championi (in S. latipennis , the pronotal denticles are rounded, and the female tegmina are approximately 2.3 times as long as wide); from S. (P.) dentatum , by the upper rostral tubercle with a very shallow median concavity dorsally and apically, the lower rostral tubercle almost flat anteriorly (vs: the upper tubercle has a rather deep and narrow median sulcus dorsally and apically, the lower one is practically divided into a pair of rounded denticles), the pronotum with a wider disc (compare Figs 7, 8 and 12, 14 View Figs 1–15 ) and more strongly arcuate dorsolateral keels as well as somewhat higher and shorter (narrower) lower parts of the lateral lobes (see Figs 9, 10 and 13, 15 View Figs 1–15 ), the female tegmina with wider distal parts (see Figs 18 and 21 View Figs 16–23 ), the female genital plate with a distinctly wider apical notch (see Figs 52 View Figs 38–57 amd 53), and the ovipositor with its distal part less arcuate (in profile) and more gradually narrowing to the apex; from S. (P.) careovirgulatum , by the same pronotal characters as from S. (P.) coronatum and S. (P.) championi , a more uniform coloration of the tegmina and legs, and the ovipositor somewhat shorter (vs: the tegmen has a slightly darkened stripe along the anal edge, the legs are with brownish marks, and the ovipositor is 8.5 mm in length); from S. (P.?) striolatum , by uniformly greenish tegmina (vs: the tegmina have darkish transverse stripes), and probably by the last male tergite truncated apically as in all Peucestes species (i.e., without any posterior process which is developed in S. striolatum ; thus, the latter species may really belong to the genus Cnemidophyllum ); from S. (P.?) unidentatum , by larger body, and the anterior pronotal edge without a distinct median denticle (vs: with such denticle; thus, S. unidentatum may belong to the subgenus Posidippus and even be a synonym of S. (Posidippus) dentiferum Walker, 1869 ); from S. (P.?) emarginatum , by the pronotal denticles somewhat more numerous (14–16 in the new species and 11 in S. emarginatum ), and the upper rostral tubercle slightly narrower than the lower one (vs: it is distinctly wider than the lower one; thus, S. emarginatus may also belong to Cnemidophyllum ).
ZIN |
Russian Academy of Sciences, Zoological Institute, Zoological Museum |
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.