Parastegana (Allstegana) punctalata Chen

Chen, Hong-Wei, Watabe, Hideaki & Zhang, Wen-Xia, 2007, A new subgenus Parastegana (Allstegana) (Diptera, Drosophilidae), with descriptions of two new species from South China, Journal of Natural History 41 (37 - 40), pp. 2403-2410 : 2408-2410

publication ID	https://doi.org/ 10.1080/00222930701633612
persistent identifier	https://treatment.plazi.org/id/0C7887A2-FF8D-AB2D-672E-FDA5FB58B3BD
treatment provided by	Carolina
scientific name	Parastegana (Allstegana) punctalata Chen
status	sp. nov.

Treatment

Parastegana (Allstegana) punctalata Chen and Watabe, sp. nov.

( Figures 4 View Figures 1–4 , 10–12 View Figures 10–12 )

Description

Head. Frons brown. Face and gena brown-red. Clypeus brown. Palpus yellow-brown.

Thorax. Mesonotum dark yellow, with three obscure, brown longitudinal stripes; median one posteriorly triangularly broadened; scutellum and pleura dark brown.

Wing. Patches of R 2+3 and R 4+5 connected to each other ( Figure 4 View Figures 1–4 ).

Legs. All femora and fore tibia yellow, the others dark yellow.

Abdomen. Male: first tergite yellow-brown; the others glossy brown-black; first to fourth sternites yellow; fifth mostly black, yellow on median. Female: all tergites yellow-brown; first to fifth sternites yellow; sixth and seventh yellow-brown.

Male terminalia. Surstylus apically pointed ( Figure 10 View Figures 10–12 ). Cercus pointed ventrally in lateral view ( Figure 10 View Figures 10–12 ). Paramere submedially curved, apically slightly roundly broadened ( Figures 11, 12 View Figures 10–12 ). Aedeagus apically somewhat narrowing ( Figure 11 View Figures 10–12 ).

Measurements. BL 53.17 mm in holotype (3.32 mm in 1 „ paratype), ThL 51.20 mm (1.20), WL 52.83 mm (2.80), WW51.00 mm (1.00).

Indices. arb54/0 (3–5/0), adf51.50 (1.60), flw52.00 (1.90), FW/HW50.45 (0.45), ch/ o50.09 (0.09), prorb51.00 (1.00), rcorb50.17 (0.17); vb50.28 (0.30), dcl50.17 (0.17), sctl51.10 (1.10), sterno50.70 (0.65), orbito50.80 (0.70), dcp50.20 (0.20), sctlp50.95 (1.00).

Type material

Holotype: „, Yunnan: Wangtianshu, Mengla, Xishuangbanna , 600 m, 12 September 2002, ex tree trunk, H. W. Chen ( KIZ). Paratype: 1 „, same data as holotype except for 6 November 2001, H. Watabe ( KIZ).

Distribution

China (Yunnan).

Etymology

A combination of the Latin words: punctatus (spotted) + alatus (wing).

Key to all species of Parastegana (male)

1. Palpus slender in male and female; subvibrissa shorter than third of vibrissa; fore first tarsomeres without black, short, thick setae on basoventral surface (genus Parastegana )..................... 2

2. Interfrontal setulae, postocellar and prescutellar setae present; ocellar setae inserted within ocellar triangle; scutellum with short tomentum; wing without infuscate patches; postpronotal seta two or three; fore femur with strong setae on anteroventral and post-ventral surfaces; hind femur apically with three strong setae on dorsal surface; male surstylus fused with epandrium; paramere absent ( Parastegana s. str.).............. P. femorata Duda

– Interfrontal setulae, postocellar and prescutellar setae absent; ocellar setae outside triangle made by ocelli; scutellum without short tomentum; wing with patches; postpronotal seta one; fore femur without strong setae on anteroventral and postventral surfaces; hind femur apically without strong setae on dorsal surface; male

surstylus separated from epandrium; paramere developed (subgenus Allstegana subgen. nov.).................... 3

3. R 2+3 with a short branch subapically... P. brevivena Chen and Zhang , sp. nov.

– R 2+3 without a short branch subapically............. 4

4. Wing patches of R 2+3 and R 4+5 connected to each other P. punctatila Chen and Watabe, sp. nov.

– Wing patches of R 2+3 and R 4+5 separated from each other....... 5

5. Surstylus subbasally with one finger-like projection; aedeagus apically not expanded, without sclerotized processes...... P. maculipennis (Okada)

– Surstylus subbasally without one finger-like projection; aedeagus apicolaterally expanded, with a pair of sclerotized processes.. P. drosophiloides (Toda and Peng)