Dryodurgades formosana (Matsumura)

C. A. Viraktamath, 2011, Revision of the Oriental and Australian Agalliini (Hemiptera: Cicadellidae: Megophthalminae) 2844, Zootaxa 2844, pp. 1-118 : 39

Dryodurgades formosana (Matsumura)

Figs 165–169.

Agallia formosana Matsumura, 1912: 313 . HOLOTYPE ♂, TAIWAN [EIHU, examined]

Dryodurgades formosana (Matsumura) : Viraktamath, 1973: 309–310, figs. 4–7.

Dryodurgades bifurcatus Cai & Shen 2000:39 , figs 4 a–j. syn. nov.

Color. Pale brown with small dark markings.

Male genitalia. Caudal lobe of pygofer rather truncate, with inner small spine-like projection on caudodorsal area. Anal collar caudoventrally curved, hook-like. Connective broad, deeply excavated on lateral margins, caudal margin with broadly V-shaped excavation. Styles with inner arm shorter than outer arm. Dorsal apodeme of aedeagus well developed. Aedeagal shaft elongate, with pair of ventrally directed, apically broadened, curved processes, with lateral tooth-like projection.

Measurements. Male 4.0 mm long, 1.4 mm wide across eyes. Female 4.2 mm long, 1.5 mm wide across eyes.

Material examined. TAIWAN: HOLOTYPE ♂, Tappan, 24.iv.1907, Matsumura (HU) . CHINA: 1 ♂, Fukein ( BPBM) . Other material: TAIWAN: 2 ♀, M. Kato ( BMNH) .

Remarks. D. formosana externally resembles D. reticulatus in coloration and structure. It differs from reticulatus in having unbranched aedeagal processes. The types of D. bifurcatus were not studied. However, illustrations of the male genitalia provided by Cai & Shen (2000) clearly show that this species is a junior synonym of D. formosana .