Steirodon
publication ID |
https://doi.org/10.31610/trudyzin/2025.329.1.13 |
persistent identifier |
https://treatment.plazi.org/id/03EF2A2F-5F68-9766-FCF3-FAC6F5B5FAF2 |
treatment provided by |
Felipe |
scientific name |
Steirodon |
status |
s. str. |
Subgenus Steirodon s. str.
= Phyllolophus Rehn, 1944 ; type species (in original binomen): Steirodon validum Stål, 1874 , by original designation.
Brief diagnosis. 1) Upper and lower rostral tubercles distally almost equal to each other in width but distinctly wider than scape ( Fig. 1 View Figs 1–15 );
2) dorsolateral denticulated keels of pronotum high and angular or strongly arcuate in profile ( Figs 1, 3–5 View Figs 1–15 );
3) middle and hind tibiae widened in proximal part (middle tibia slightly, hind tibia distinctly; Figs 40, 41 View Figs 38–57 );
4) tegmina with anterior branch of RS ending at tegminal apex (as in Stilpnochlora ; Fig. 16 View Figs 16–23 );
5) male abdomen with last (tenth) tergite widely truncate at apex ( Fig. 42 View Figs 38–57 );
6) female abdomen having last (tenth) tergite with a pair of rather large apical lobules, but its other tergites without lobules or with only a pair of very small tubercles on posteromedian edge of ninth tergite (approximately as in Fig. 51 View Figs 38–57 ).
It is necessary to indicate that Emsley (1970) erroneously interpreted the above mentioned female tergites as the ninth and eighth, respectively; but in male, he treated the last abdominal tergite correctly (i.e., as the tenth), although the first abdominal tergite is more or less fused with the pterothorax in both sexes of this genus as well as in many other Phaneropterinae taxa.
Composition (in original binomens). Steirodon ponderosum Stål, 1873 (described from “Brasilia”; distributed from Trinidad and Colombia to Bolivia and Paraguay); S. validum Stål, 1874 (type locality unknown; distributed from French Guiana and Venezuela to Peru and sourthern Brazil, but possibly these indications or part of them related to S. superbum sp. nov.); Phyllolophus alfaroi Rehn, 1944 (described from Costa Rica; distributed also in Panama and possibly in other countries of Central America); Ph. ganymedes Rehn, 1944 (described from Rio de Janeiro; distributed also in other parts of southern Brazil and possibly in Paraguay); Steirodon (Steirodon) superbum sp. nov.
It is useful to note that all these species (including S. validum and possibly S. superbum sp. nov.) were included in this subgenus by Emsley (1970), but in OSF, S. (S.) validum was mistakenly transferred to the subgenus Posidippus Stål, 1874 , although it undoubtedly belongs to the nominotypical subgenus (judging by its holotype photographs in OSF).
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