Yarlungocerus Xue & Zhang, 2025
publication ID |
https://doi.org/10.11646/zootaxa.5683.3.3 |
publication LSID |
lsid:zoobank.org:pub:CC0547ED-266F-45C2-9DDB-7A068BBDD7CE |
DOI |
https://doi.org/10.5281/zenodo.17016105 |
persistent identifier |
https://treatment.plazi.org/id/EA23878A-FFCB-FFBE-FF5C-FD21FEBC8CED |
treatment provided by |
Plazi |
scientific name |
Yarlungocerus Xue & Zhang |
status |
gen. nov. |
Yarlungocerus Xue & Zhang gen. nov.
Type species: Yarlungocerus linzhiensis sp. nov., here designated.
Diagnosis. Crown rugose, pronotum shagreen, rostrum broadened, forewing with m-cu1 and r-m1 crossveins, hind femur with 2 + 1 apical setae, segment X with developed internal process, pygofer ventral margin with inner process, style sickle-shaped, aedeagal shaft smooth and without process, aedeagus dorsal apodeme developed, aedeagus preatrium absent.
Description. Body generally brown. Forewing generally transparent, with veins brown, whitish spots on apical parts of veins 1A, 2A and on some veins in corium ( Fig. 4E View FIGURE 4 ).
Head wider than pronotum. Coronal suture short. Crown medially slightly shorter than next to eye. Crown and face dorsad of ocelli transversely rugose ( Figs 4C–D View FIGURE 4 ). Face wider than long; antennae without apical disc; lateral frontal sutures short, not reaching ocelli; ocelli closer to adjacent eye than to median line; anteclypeus apical half broadened; rostrum broadened, rhombus ( Fig. 4O View FIGURE 4 ). Pronotum anterior and posterior margins curved, shagreen. Combined length of mesoscutum and scutellum longer than pronotum ( Fig. 4C View FIGURE 4 ). Forewing with 4 apical and 2 subapical cells, m-cu1 and r-m1 crossveins present; outer apical cell largest; clavus with two veins ( Fig. 4E View FIGURE 4 ). Fore tibia with dense, stout and long AV and PV setae on distal half, several fine setae on basal half. Hind tibiae with 7–8 setae on row PD, 5–6 setae on AD and 6 setae on row AV. Hind femur with 2 + 1 apical setae. Hind basitarsus with two platellae.
Male genitalia. Male pygofer rounded, dorsal margin with a large anterior apodeme, ventral margin with an inner process. Segment X fused to pygofer, with internal process. Subgenital plate longer than pygofer, with dense fine setae on dorsal and few fine setae on ventral margin ( Fig. 11A View FIGURE 11 ). Style curved dorsad, with few fine setae on dorsal margin ( Fig. 11F View FIGURE 11 ). Aedeagus dorsal apodeme well developed; aedeagal shaft robust in proximal one third, straight, tapered apex; gonopore subapical ( Figs 11D–E View FIGURE 11 ).
Distribution. China ( Xizang).
Etymology. The name of the genus is derived from the famous river of Xizang, the Yarlung Zangbo river; gender masculine.
Remarks. Yarlungocerus gen. nov. resembles the Oriental and Australian genera Idioscopus , Amritodus and Busoniomimus in the texture of the crown and pronotum. However, the new genus differs from these genera in having a rounded distal half of the male pygofer compared to the narrow and most often angularly rounded pygofer apex in these genera. The new genus also differs from Idioscopus in not having apical or subapical processes on the aedeagal shaft (processes present in Idioscopus ); from Amritodus in the absence of a well-developed preatrium and the aedeagus not S-shaped (aedeagus in Amritodus is S-shaped and has a well-developed preatrium); it differs from Busoniomimus in lacking an angular ventral projection on the male pygofer and the aedeagal shaft is not pustulate (male pygofer has an angular ventral projection and the aedeagal shaft in majority of species is pustulate in Busoniomimus ).
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