Conjunctus Yao, Yu & Yang, 2025
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publication ID |
https://doi.org/10.3897/dez.72.156715 |
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publication LSID |
lsid:zoobank.org:pub:3741EAE4-160C-4518-B135-58FADB431AB8 |
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DOI |
https://doi.org/10.5281/zenodo.17405974 |
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persistent identifier |
https://treatment.plazi.org/id/476D6111-DB82-5C70-B40A-177209E8C74D |
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treatment provided by |
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scientific name |
Conjunctus Yao, Yu & Yang |
| status |
gen. nov. |
Conjunctus Yao, Yu & Yang gen. nov.
Type species.
Conjunctus decussatus Yao, Yu & Yang , sp. nov., is here designated.
Diagnosis.
The new genus is similar to Ishiharella Dworakowska, 1970 , and Mahmoodia Dworakowska, 1970 , in having the subgenital plates fused basally. The new genus is closely related to Ishiharella but can be distinguished by the following characters: (1) base of aedeagus slightly curved, lacking paired protuberances at the base of shaft (Fig. 2 D, E, G View Figure 2 ); (2) aedeagal shaft with vertical tubular gonoduct, with gonopore opening positioned distinctly above inflated part of shaft (Fig. 2 D, E, G View Figure 2 ) (vs. opening within inflated part of shaft in Ishiharella ). The new genus differs from Mahmoodia in having very thick parameres and a penis lacking a large pre-atrium with appendages (Fig. 2 D, F View Figure 2 ). The new genus is similar to Wolvletta Dworakowska, 1995 , Theasca Dworakowska, 1972 , and Radicafurcus Qin & Zhang, 2010 , in having forewings with RP and MP′ connate basally and hindwings with an unbranched CuA vein (Fig. 1 E, F View Figure 1 ). However, the new genus differs from Wolvletta by the presence of a laminar enlargement on the subterminal portion of the aedeagal shaft in lateral view and a distinctly unforked shaft apex (Fig. 2 G View Figure 2 ). The new genus differs from Theasca by its very short, slender abdominal apodemes (Fig. 2 A View Figure 2 ) and penis-bearing tuberculous subterminal appendages (Fig. 2 D, E View Figure 2 ). Finally, the new genus can be distinguished from Radicafurcus by the aedeagus, which bears a ventral apodeme and remains unbranched in its ventral third (Fig. 2 D, G View Figure 2 ).
Description.
Head. Crown with anterior margin obtusely rounded, posterior margin distinctly concave, nearly parallel in dorsal aspect. Vertex with median depression widening posteriorly (Fig. 1 A, D View Figure 1 ). Crown about 0.4 times interocular width, distinctly shorter than median length of pronotum; maximum crown width narrower than pronotum width (Fig. 1 A, D View Figure 1 ). Ocelli on vertex, far from compound eyes (Fig. 1 B, C View Figure 1 ). Coronal suture absent. Face broad, length about twice that of crown; frontoclypeal area distinctly elevated (Fig. 1 B, C View Figure 1 ).
Thorax. Pronotum with anterior margin broadly arcuate, posterior margin concave, lateral margins with lambda-shaped depressions (Fig. 1 A, D View Figure 1 ). Forewing with RP and MP′ connate basally, forming a triangular third apical cell; three apical veins arising from m cell; m cell slightly longer, about 4 times wider than r cell (Fig. 1 E View Figure 1 ). Hindwing with CuA vein unbranched (Fig. 1 F View Figure 1 ).
Abdomen. Ventral abdominal apodemes weakly developed (Fig. 2 A View Figure 2 ). Pygofer well-developed, with posterior margin folded ventrally, apex with minute setae, bearing ventral pygofer appendage (Fig. 2 B, C View Figure 2 ). Subgenital plates united basally to valve; macrosetae present, marginal setae lateral to macrosetae (Fig. 2 I View Figure 2 ). Paramere thick, short; apex with rolled folds, sub-terminal part with setae (Fig. 2 D, F View Figure 2 ). Aedeagus shaft slightly curved at base in lateral view; subterminal portion with protrusion and laminar enlargement (Fig. 2 G View Figure 2 ). Aedeagus shaft sclerotised, with vertical tubular gonoduct in dorsal view; gonopore opening distinctly above protrusion and inflated part of shaft (Fig. 2 D, E, G View Figure 2 ). Anal tube process developed (Fig. 2 J View Figure 2 ). Connective broad at base, narrowed distally (Fig. 2 D, E, G View Figure 2 ).
Diversity and distribution.
The single known species of the genus occurs in Oriental parts of China.
Etymology.
The generic name refers to the fusion of the subgenital plates at their basal articulation, a diagnostic character for the genus. Gender: masculine.
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.
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