Dasydorylas Skevington, 2001,

Motamedinia, Behnam, Kehlmaier, Christian, Mokhtari, Azizollah, Rakhshani, Ehsan & Gilasian, Ebrahim, 2017, The genus Dasydorylas Skevington in Iran, with the description of two new species (Diptera: Pipunculidae), European Journal of Taxonomy 362, pp. 1-13: 11

publication ID

https://doi.org/10.5852/ejt.2017.362

publication LSID

lsid:zoobank.org:pub:81091709-E3B1-4739-A884-2E8B9B428061

DOI

http://doi.org/10.5281/zenodo.3851701

persistent identifier

http://treatment.plazi.org/id/03C78782-497F-FFCA-FF79-FED6FA927D9E

treatment provided by

Carolina

scientific name

Dasydorylas Skevington, 2001
status

 

Key to males of West-Palaearctic Dasydorylas Skevington, 2001 

For generic identification, follow the key in Kehlmaier (2005a) to couplet 18.

1 Abdominal tergites densely covered with rather long bristly hairs (♂♂: up to 0.07 mm). (Dorso-) lateral fan of tergite 1 with about 13 strong, dark bristles of different length. Male genitalia as in Kehlmaier 2005a: fig. 15a–h .................................................................... D. horridus (Becker, 1897) 

– Abdominal tergites less densely covered with shorter hairs (up to 0.05 mm). (Dorso-) lateral fan of tergite 1 with about 8 bristles at the most.....................................................................................2

2 Flagellum extremely long tapering, filiform (LF:WF>5.5) ( Kehlmaier 2005a: fig. l8i). Syntergosternite 8 without membranous area. Eyes meeting for about ten times diameter of ocellus. F:EM= 1:0.5–0.6. LTC:LFC =0.6–0.8. Surstyli and genitalia as in Kehlmaier 2005a: fig. 18a–h ....... ............................................................................................................... D. filiformis Kehlmaier, 2005 

– LF:WF<4.0. Syntergosternite 8 with membranous area. Eyes meeting for 15 to 20 times diameter of ocellus. F:EM=1:1.0–1.2. LTC:LFC>1.6.....................................................................................3

3 Scutellar hair fringe with 6 very strong bristles (up to 0.2 mm). Flagellum very long, tapering (LF:WF=3.7–3.9) ..................................................................................... D. setosus (Becker, 1908) 

– Scutellar hair fringe with up to 14 shorter bristles (up to 0.07 mm). Flagellum shorter (LF:WF= 2–2.3).................................................................................................................................................4

4 Phallic guide with up to 14 long spines on each side, pointing upwards into different directions. Each surstylus distally with a single outward bent finger-like projection ( Kehlmaier 2005b: fig. 12i) ........................................................................................................... D. gradus Kehlmaier, 2005 

– Phallic guide with less than 10 long spines on each side...............................................................5

5 Phallic guide with 8 downwards directed long spines on each side. Each surstylus with a pair of finger-like projections which are bent towards each other ( Fig. 3EView Fig) ......................................... ..................................................................... D. derafshani Motamedinia & Kehlmaier  sp. nov.

– Phallic guide with only 2 spines on each side.................................................................................6

6 Gonopods with elongated regions of distinctly stronger sclerotization ( Fig. 5AView Fig). Phallus short and length of ejaculatory ducts shorter than length of surstyli ......................................................... ............................................................................... D. zardouei Motamedinia & Kehlmaier  sp. nov.

– Gonopods without elongated regions of stronger sclerotization. Ejaculatory ducts of phallus longer than surstyli.......................................................................................................................................7

7 Dorsolateral spines of phallic guide rather strong, situated at end of basal half ( Kehlmaier 2005a: fig. 14a–b). Surstyli as in Kehlmaier 2005a: fig. 14d, j–k. Phallus with long ejaculatory ducts ( Kehlmaier 2005a: fig. 14h). Membranous area occupies about half the width of syntergosternite 8 ( Kehlmaier 2005a: fig. 14e) .............................................. D. holosericeus (Becker, 1897) 

– Dorsolateral spines of phallic guide somewhat smaller and situated after basal third ( Kehlmaier 2005a: fig. 16a–b). Surstyli as in Kehlmaier 2005a: fig. 16d, j–k. Phallus with shorter ejaculatory ducts ( Kehlmaier 2005a: fig. 16h). Membranous area occupies about a third of the width of syntergosternite 8 ( Kehlmaier 2005a: fig. 16f) ............................................................ D. roseri (Becker, 1897)