Nemestrinus fasciatus (Olivier, 1811)

El-Hashash, Arafa Elsayed, Badrawy, Haitham Badrawy Mousa & Ibrahim, Ayman Mohyie-Eldin, 2021, A review of tangle-veined flies (Nemestrinidae, Diptera) in Egypt, ZooKeys 1071, pp. 11-42 : 11

publication ID

https://dx.doi.org/10.3897/zookeys.1071.70743

publication LSID

lsid:zoobank.org:pub:C91AFA18-87C8-444E-AB6C-85C747B3893B

persistent identifier

https://treatment.plazi.org/id/2EA43BCE-8DBE-5567-91C8-B55725DED1DE

treatment provided by

ZooKeys by Pensoft

scientific name

Nemestrinus fasciatus (Olivier, 1811)
status

 

Nemestrinus fasciatus (Olivier, 1811)

Figures 61-70 View Figures 61–70 , 71-79 View Figures 71–79

Nemestrina fasciata Olivier, 1811: 171-172. Type locality: Egypt.

Specimens examined.

Burg El-Arab 30°54'12.7"N, 29°33'13.7"E, 6.v.1926 (1 m #); Burg El-Arab, 2.v.1921 (10 m #) (AZUC); Burg El-Arab 30°54'12.7"N, 29°33'13.7"E, 5.v.1926 (1 f#) (CUC); Burg El-Arab 30°54'12.7"N, 29°33'13.7"E, 10.v.1927 (1 m #), 19.iv.1928 (6 m # & 6 f#); King Mariut 30°57'27.2"N, 29°38'51.0"E 14.iv.1915 (1 m #), 23.v.1925 (1 m #); Burg El-Arab 30°54'12.7"N, 29°33'13.7"E, 2.v.1924 (1 f#) (MAC); Max 31°09'50.5"N, 29°51'47.7"E, 21.iv.1952 (1 f#) (ASUC).

Diagnosis.

Frons and face with dense whitish hairs and pollinose; inner ends of transverse suture with two white spots; wing hyaline with brownish base, veins yellowish, without additional small cells; abdomen black with transverse white bands, slightly curved medially; gonocoxite with inner and outer processes, the inner tapered apically, outer slightly curved subapically; gonostyli broader than gonocoxal processes with broad subapical projection; aedeagal complex narrow, aedeagus slightly broader distally.

Redescription.

Length: male body 13-16.5 mm, wing 1-12 mm. Female) body 12-19.5 mm, wing 1-13 mm.

Head triangular in profile, ventrally with dense, short, whitish hairs; frons and face with dense whitish hairs and pollinosity (Figs 61-63 View Figures 61–70 , 71-73 View Figures 71–79 ); antenna distinctly jointed, stylus is brown (Figs 64 View Figures 61–70 , 74 View Figures 71–79 ). Thorax slightly shiny black; inner parts of transverse suture with two white spots; scutellum and mesonotum with grayish yellow hairs; pleurae with long white hairs. Leg with blackish femora covered with whitish hairs; tibiae and tarsi brown with brownish red hairs; pulvilli orange, nearly as long as claws. Wing hyaline with brownish infuscate base; veins yellowish, without additional small cells (Figs 65 View Figures 61–70 , 75 View Figures 71–79 ). Abdomen black with transverse white bands, whi slightly curved medially; basal segments with long yellowish hairs but subsequent segments with white hairs; venter of abdomen with dense white hairs that fold on the lateral margins (Figs 66 View Figures 61–70 , 76 View Figures 71–79 ). Gonocoxite with inner and outer processes, inner tapered apically, outer slightly curved subapically; gonostyli broader than gonocoxal processes with broad projection subapically (Figs 67 View Figures 61–70 , 68 View Figures 61–70 ); aedeagal complex narrow, aedeagus slightly broader apically (Figs 69 View Figures 61–70 , 70 View Figures 61–70 ).

Female: eyes separated in both sexes but considerably broader than in male at vertex; genitalia with sub-rectangular subgenital plate (Fig. 77 View Figures 71–79 ); genital furca narrower anteriorly with four incurved posterolateral projections (Fig. 78 View Figures 71–79 ); uterus with terminal accessory process; spermathecae rather long (Fig. 79 View Figures 71–79 ).

Local distribution.

Coastal strip.

Geographical distribution.

Algeria, Egypt, Morocco, Israel, and Syria ( Sack 1933; Bernardi 1973; Richter 1988).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Nemestrinidae

Genus

Nemestrinus