Watabe, Chen & Watabe & Zhang, 2007
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publication ID |
https://doi.org/ 10.1080/00222930701633612 |
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persistent identifier |
https://treatment.plazi.org/id/0C7887A2-FF89-AB20-6731-FC40FC5DB103 |
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treatment provided by |
Carolina |
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scientific name |
Watabe |
| status |
subgen. nov. |
Patastegana (Allstegana) Chen and Watabe , subgen. nov.
Type species: Stegana (Parastegana) maculipennis Okada 1971, p 92 .
Diagnosis
Arista without ventral branches except for terminal fork; aedeagus composed of robust median rod and outer membrane: median rod black and short, outer membrane with minute spinules ( Figures 6–8 View Figures 5–9 , 11 View Figures 10–12 ).
Description
Head. Eyes brown. Ocellar triangle black. Frons orange to brown, glabrous, mostly without minute interfrontal setulae. Anterior reclinate orbital minute; posterior reclinate orbital situated nearer to proclinate than to inner vertical. Pedicel brown; first flagellomere yellow-grey. Arista with long dorsal branch and terminal fork, lacking pubescence. Facial carina undeveloped. Subvibrissa shorter than the third vibrissa. Palpus yellow-grey, slender in male and female.
Thorax. Mesonotum and scutellum dorsally more or less convex. Postpronotal seta one. Acrostichal setulae in about eight irregular rows. Katepisternal setae two. Subscutellum exerted.
Wing ( Figures 1–4 View Figures 1–4 ). Flavotestaceous with dark brown patches. Basal medial-cubital crossvein absent. Costal vein extending beyond tip of R 4+5, with five to seven peg-like
spinules on ventral surface between R 2+3 and R 4+5. R 2+3 slightly curved to costa at tip; M 1 strongly convergent to R 4+5. Halter: stalk grey; knob white.
Legs. All femora and tibiae slender. Fore femur without strong setae on post-dorsal to postventral surfaces. Mid tibia basally without strong, post-dorsal setae. Preapical dorsal setae present on mid and hind tibiae; apical setae present on fore and mid tibiae. Mid tarsus ventrally with two rows of minute cuneiform setulae on inner and outer sides; hind tarsus with a row of minute cuneiform setulae on underside. Fore first tarsomere as long as succeeding tarsomeres together; mid and hind first tarsomere longer than other tarsomeres combined.
Abdomen. All tergites glossy; first and second tergites yellow-grey, the others brown to black.
Male terminalia. Epandrium broad, slightly constricted mid-dorsally, setigerous, pubescent except for anterior margin ( Figures 5 View Figures 5–9 , 10 View Figures 10–12 ). Surstylus separated from epandrium, slightly triangular, apically narrow, lacking pubescence, with several setae on outer and inner surfaces. Cercus separated from epandrium, pubescent and setigerous. Hypandrium broadened. Gonopods forming a post-median lobe, contiguous with hypandrium. Paramere distally with two to three long and several small sensilla, and several warts, basally contiguous with arm of aedeagal apodeme. Aedeagus composed of robust median rod and outer membrane; median rod black, strongly sclerotized, distally bilobed; outer membrane posteriorly reaching dorsal mantle. Aedeagal apodeme long, rod-shaped, laterally flattened, with a vertical plate connecting to hypandrium.
| R |
Departamento de Geologia, Universidad de Chile |
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