Dorsomitus tjederi Michel

Michel, Bruno & Mansell, Mervyn W., 2018, A new genus and species of owlfly from eastern and southern Africa (Neuroptera: Ascalaphidae), European Journal of Taxonomy 413, pp. 1-12: 4-8

publication ID

persistent identifier

treatment provided by


scientific name

Dorsomitus tjederi Michel

gen. et sp. nov.

Dorsomitus tjederi Michel  gen. et sp. nov. CAD 5E9E600

Fig. 2View Fig.2



Prongs of the forked projection of first abdominal segment twice as long as wide ( Fig. 2D–EView Fig.2). Lateral surface of abdominal tergites 2 and 3 covered with short black spines ( Fig. 2C–DView Fig.2).


The first author dedicates this species to the late Dr. Bo Tjeder in gratitude for his huge contribution to the knowledge of Neuroptera  .

Material examined


ZIMBABWE: ♂, Marondera (“Rhodesia, Marandellas ”), -18.19, 31.55, alt. 1640 m, Nov. 1961, “ Disparomitus neavei  det. D.E Kimmins 1963” ( NHMUK 1963-439) ( Fig. 2AView Fig.2).

Other specimens

MALAWI: 1 ♂, Chisasira Forest Reserve , -11.85, 34.08, 25 Dec. 2001, R.J. Murphy leg. ( SANCAbout SANC NEUR05937). 

SOUTH AFRICA: 1 ♂, Ben Lavin Nature Reserve , 9 km South of Louis Trichardt, -23.04, 29.91, alt. 950 m, 8–14 Dec. 2000, M. Krüger leg. ( SANCAbout SANC NEUR09310)  ; 1 ♂, same but 8 Dec. 2000 (SANC NEUR09310);  1 ♂, Bluegums Poort Farm , -22.97, 29.88, alt. 1445 m, 15 Oct. 1999, J. Joannou leg. ( SANCAbout SANC NEUR05778)  ; 1 ♂, D’Nyala Nature Reserve , -23.75, 27.83, alt. 893 m, 17 Dec. 1987, E. Van der Linde leg. ( SANCAbout SANC NEUR00775)  ; 1 ♂, Manoutsa Resort , -24.4, 30.62, alt. 504 m, 24 Nov. 1981, R.G. Oberprieler leg. ( SANCAbout SANC NEUR00080)  ; 1 ♂, same but 24 Nov. 1981, M.W. Mansell leg. (SANC NEUR00083);  1 ♂, Pafuri , -22.43, 31.21, alt. 216 m, 24 Dec. 1973, H. & A. Braack leg. ( SANCAbout SANC NEUR09295)  ; 1 ♂, same but 6 Dec. 1986, L.E.O. Braack leg. (SANC NEUR08750). 

ZIMBABWE: 1 ♂, Arcturus, -17.78, 31.32, 7 Nov. 1999, A.J. Gardiner leg. ( SANCAbout SANC NEUR09311);  1 ♂, Harare, Glenborne, -17.25, 31.03, 3 Dec. 1992, A.J. Gardiner leg. ( SANCAbout SANC NEUR09312); 1  ♂, Lawrenceville , -19.03, 32.73, alt. 1500 m, 6 Dec. 1994, N.J.S. Duke leg. ( SANCAbout SANC NEUR01985). 



HEAD. Frons black with luteous margins to eyes. Labrum and clypeus yellowish. Tufts of hairs between bases of antennae brownish. Antennae brown with yellowish mark on external apical part of each antennomere. This mark (not clearly visible on all the specimens) is more visible on the last segments. Segments of the club yellowish, bordered with brown apically.

THORAX. Grey to yellowish-brown. Prescutum of mesothorax with dark oval marking divided medially by a narrow longitudinal clear line. Dorsal part of mesoscutum with an elongate dark marking ( Fig. 2AView Fig.2). Lateral and ventral part of thorax testaceous, lighter than the dorsal part, covered with silky white hairs ( Fig. 2BView Fig.2). Legs dark brown with apex of femora yellow and two yellow markings on the dorsal surface of tibiae ( Fig. 2BView Fig.2). Tarsi dark brown.

ABDOMEN. Prongs of the forked projection of abdominal segment 1 of male twice as long as wide ( Fig. 2D–EView Fig.2). Lateral surfaces of abdominal tergites 2 and 3 covered with short black erect spines ( Fig. 2C–DView Fig.2). Dorsal area of same tergites glabrous ( Fig. 2CView Fig.2). Second abdominal tergite with two basal black shiny areas and two longitudinal sinuate dark lines ( Fig. 2FView Fig.2). Ectoprocts extended laterally with one apical stout black seta ( Fig. 2GView Fig.2). Subgenital plate convex, yellowish laterally, bordered with brown, tapering to a sub-rounded apex. Gonarcus-parameres complex as in Fig. 2H–JView Fig.2. Parameres not extended downwards by a carina ( Fig. 2H, JView Fig.2). Pulvini well developed, lacking setimere ( Fig. 2GView Fig.2).


Known from South Africa, Zimbabwe and Malawi ( Fig. 4View Fig. 4).


Considering the shape of the prongs of the forked projection of segment 1 of male, and the spine-like setae on the lateral surface of abdominal tergites 2 and 3, and pending the observation of additional specimens, we consider that the species briefly described and illustrated by Tjeder (1992) is D. tjederi  gen. et sp. nov.


Agricultural Research Council-Plant Protection Research Institute