Coarctana asymmetrica, Domahovski & Cavichioli, 2023
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publication ID |
https://dx.doi.org/10.3897/asp.81.e81961 |
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publication LSID |
lsid:zoobank.org:pub:5C1FDC82-8F9F-4869-ADDD-83FA96E507ED |
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persistent identifier |
https://treatment.plazi.org/id/9B4393E3-772A-4CF6-A99E-F3A3313E8582 |
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taxon LSID |
lsid:zoobank.org:act:9B4393E3-772A-4CF6-A99E-F3A3313E8582 |
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treatment provided by |
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scientific name |
Coarctana asymmetrica |
| status |
sp. nov. |
Coarctana asymmetrica sp. nov.
Figs 18 View Figure 18 , 31C, D View Figure 31
Diagnosis.
Head (Fig. 18A View Figure 18 ) with portion between ocelli and anterior margin dark-brown. Pygofer (Fig. 18G View Figure 18 ) with apex excavated. Subgenital plate (Fig. 18H View Figure 18 ) with long filiform setae. Style (Fig. 18K View Figure 18 ) apex truncated, with one process directed dorsally and one ventrally, both with equivalent sizes and acute. Aedeagus (Fig. 18L, M View Figure 18 ) with ventral margin of apodemal process forming rounded lobe produced ventrally; shaft with pair of processes directed ventrally: left process short, about 1/4 length of shaft, right process longer, about 2/3 length of shaft and directed to left side.
Measurements.
Total length: holotype male 7.6 mm.
Description.
Head, in frontal view (Fig. 18B View Figure 18 ), frons 1.2 × wider than long; frontogenal suture distant from eye margin by approximately half maximum width of clypeus; clypeus 1.2 × wider than long; lateral margins straight, slightly convergent apically; apex straight. Head, in lateral view (Fig. 18C View Figure 18 ), crown-face transition thin, with 3 transverse carinae; clypeus not inflated. Forewing (Fig. 18D View Figure 18 ) with apex of anal veins bifid. Profemur AV row with 5 setae; PV row with 1 seta near apex. Protibia PD row with 3 setae and undifferentiated intercalary setae; PV row with 5 setae and undifferentiated intercalary setae. Metatibia PD, AD and AV rows with 22-24, 13 and 15 macrosetae respectively. Metatarsomere I 4 × longer than apical width; inner row of the ventral surface with 5 setae. Other characteristics as in generic description.
Coloration.
Head and thorax (Figs 18A-D View Figure 18 , 31C, D View Figure 31 ) yellowish-brown. Head (Fig. 18A View Figure 18 ) with pair of small circular black spots, near posterior margin, behind ocelli; portion between ocelli dark brown. Face (Fig. 18B View Figure 18 ) yellowish; antennal pit dark brown. Pronotum (Fig. 18A View Figure 18 ) with black punctures; small black maculae near anterior margin, behind eye and ocellus; proepimeron (Fig. 18C View Figure 18 ) black, except ventral third yellow. Mesonotum (Fig. 18A View Figure 18 ) reddish-brown. Scutellum yellowish. Forewing (Fig. 18D View Figure 18 ) with brown veins, larger dark-brown maculae on apex of anal veins, outer discal cell, costal margin, cross veins of discal and apical cells; transverse brown stripe over subapical cells; apical cells smoky apically. Metatibia (Fig. 18C View Figure 18 ) with cucullate bases of setae blacks.
Male terminalia.
Sternite VIII (Fig. 18E View Figure 18 ) 1.5 × wider than long; lateral margins weakly convergent posterad; posterior margin straight. Valve (Fig. 18F View Figure 18 ) 1.8 × wider than long; posterior margin rounded. Pygofer, in lateral view (Fig. 18G View Figure 18 ), 1.6 × longer than maximum height; basodorsal process thin and short, extending ventrally for 1\5 height of lateral lobe; ventral margin rounded, posterodorsal and posteroventral margins straight and weakly convergent posterad; apex broad and excavated, forming two rounded tips: the dorsal wider than the ventral. Subgenital plate, in lateral view (Fig. 18G View Figure 18 ), not reaching pygofer apex; in ventral view (Fig. 18H View Figure 18 ), elongated, 3.3 × longer than wide, maximum width near median third; long filiform setae on ventral surface near outer margin and dorsal surface near base; lateral margins rounded; apex tapered, subacute. Connective (Fig. 18I View Figure 18 ) about as wide as long; anterior margin excavated; dorsal keel reduced; stem short. Style, in dorsal view (Fig. 18J View Figure 18 ), with outer lobe developed and rounded; in lateral view (Fig. 18K View Figure 18 ), blade narrow, slightly wider on apical half; dorsal margin almost straight; ventral margin with basal half straight and apical half slightly rounded and serrated; apex truncated, with one process directed dorsally and one ventrally, both with equivalent sizes. Aedeagus (Fig. 18L, M View Figure 18 ) preatrium weakly developed; dorsal apodeme with dorsal margin straight, lateral margins not produced laterally; apodemal processes narrow basally, curved in right angle dorsally in the basal third; ventral margin forming rounded lobe produced ventrally; distal portion straight, apex weakly broadened, curved over the apex of shaft; shaft approximately cylindrical, strongly curved dorsally near base, with small basolateral expansion that surrounds the previous portion of shaft; apex with pair of processes directed ventrally: left process short, about 1/4 length of shaft, right process longer, about 2/3 length of shaft and directed to left side. Other characteristics as in generic description.
Female.
Unknown.
Material examined.
Holotype male: Brazil: Mato Grosso: “Cáceres, MT\ 20.XI.1984 \ C. Elias leg.\ Polonoroeste" (DZUP).
Etymology.
The new species name refers to asymmetric apical processes of the aedeagus.
Remarks.
Coarctana asymmetrica sp. nov. was recovered as sister group to C. nigromedia sp. nov. with moderate branch support (SR = 67) (Fig. 7 View Figure 7 ), both of them have the pygofer apex excavated (Fig. 18G View Figure 18 ). The new species is easily differentiated by having the style (Fig. 18K View Figure 18 ) with apex truncated, bearing one small process directed dorsally and one ventrally, both similar in size; and in having the aedeagal shaft (Fig. 18L, M View Figure 18 ) with pair of asymmetric processes.
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