Tabanus Linnaeus
Creators: name: Abu El-Hassan, Gawhara M. M.
name: Badrawy, Haitham B. M.
name: Fadl, Hassan H.
name: Mohammad, Salwa K.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Tabanus

description: Key to species of Tabanus Linnaeus in Egypt
1 Eyes dichoptic (females)................................................................................ 2
- Eyes holoptic (males)................................................................................. 19
2 Lower callus lacking or reduced, occupying less than 3/4 width of frons; basicosta covered with yellowish hairs.. [Atylotus]
- Lower callus usually distinct and broad, occupying at least 3/4 width of frons; basicosta densely and entirely covered with black hairs [Tabanus]................................................................................. 3
3 Subcallus entirely smooth (Fig. 3 G)..................................................................... 4
- Subcallus entirely dusted (Figs 3 A, C, D, E, F, H, I, K), at most smooth on the upper margin (Figs 3 B, J)............... 6
4 Subcallus flat, with 3 semicircular furrows around each antenna (Fig. 3 L); abdomen lilac-brown........ T. unicinctus Loew
- Subcallus bulging, without furrows (Fig. 3 G); abdomen blackish.............................................. 5
5 Eyes with microsetae; subcallus gently bulging; frons parallel-sided; R4 with appendix appearing in at least one wing........................................................................................... T. leucostomus Loew
- Eyes bare; subcallus strongly bulging (Fig. 1 H); frons with sides not parallel (Fig. 3 G); R4 without appendix in either wing (Fig. 4 F)............................................................................... T. mordax Austen
6 Subcallus partly smooth on its upper margin in contact with lower callus (Figs 3 B, J)................................ 7
- Subcallus entirely dusted............................................................................... 8
7 Abdomen greyish with 4 longitudinal, elongated and separated brown spots (Fig. 5 B); R4 without appendix in either wing (Fig. 4 C)............................................................................... T. arenivagus Austen
- Abdomen blackish-brown to black with row of grey median triangles, and with 2 separated whitish-grey longitudinal spots, longest on segment 2 (Fig. 5 H); R4 with appendix on at least one wing (Fig. 4 I)...................... T. sufis Jaennicke
8 Eyes with microsetae; antennae strongly contrasting with all segments orange and flagellum black (Fig. 2 B).... lunatus Fabricius
- Eyes bare; antennal segments not obviously contrasting...................................................... 9
9 Red species........................................................................................ 10
- Greyish brown, brown or blackish species................................................................. 11
10 Abdomen with 2 longitudinal blackish stripes; R4 without appendix in either wing................... T. terminalis Walker
- Abdomen not striped; R4 with appendix in at least one wing...................................... T. siccus Walker
11 Frons with sides not parallel (Figs 3 A, D, E, I)............................................................ 12
- Frons with parallel sided (Figs 3 C, H, K)................................................................. 16
12 Parafacial band distinct; middle callus less developed, often indistinct (Fig. 3 E)....................... T. leleani Austen
- No parafacial band; middle callus well developed.......................................................... 13
13 Abdomen blackish-brown with 2 longitudinal white oval separated spots and row of grey median triangles (Fig. 5 A)............................................................................................. T. albifacies Loew
- Abdomen greyish with four longitudinal brown stripes (Figs 5 D, G)........................................... 14
14 R4 with appendix on at least one wing (Fig. 4 H); middle callus quadrate shape (Fig. 3 I)............. T. separatus Efflatoun
- R4 without appendix on either wing; middle callus oval shape (Fig. 3 D)........................................ 15
15 Narrow bodied, elongate species, more than 12 mm; scape pinkish color; abdomen with inner margin of the two median stripes parallel, not expanded.................................................................. T. accensus Austen
- Small species, less than 12 mm; scape grayish white color; abdomen with inner margin of the two median stripes expanded on terga 3 and 4 (Fig. 5 D)..................................................................... T. gratus Loew
16 R4 with appendix on at least one wing (Fig. 4 G); with parafacial band on each side of antennae; middle callus crescent shape (Fig. 3 H).............................................................................. T. rupinae Austen
- R4 without appendix on either wing; no parafacial band; middle callus otherwise shape............................ 17
17 Antennae uniformly reddish yellow; abdomen yellowish brown with 4 longitudinal blackish stripes, terga 1 and 2 with black spot at middle, terga 4–6 with blackish spots on lateral margins (Fig. 5 J)...................... T. ptolemaeanus Szilády
- Antennae not uniformly colored; abdomen not as above (Figs 5 C, I)............................................ 18
18 Abdomen tapered at both ends (Fig. 5 I); scutellum black with reddish-brown apex; lower callus in females large, square- shaped, middle callus elongated (Fig. 3 K).......................................... T. taeniola Palisot de Beauvois
- Abdomen broad (Fig. 5 C); scutellum greyish-brown; lower callus in females elongate-ovoid or drop-shaped, middle callus very narrow (Fig. 3 C)................................................................ T. autumnalis Linnaeus
19 Basicosta covered with yellowish hairs, at most with few black hairs on apical margin; most species with head deeply concave posteriorly and convex anteriorly (Fig. 1 A); R4 with appendix on at least one wing (Figs 4 A, B)............... [Atylotus]
- Basicosta densely and entirely covered with black hairs; most species with head broad, not convex anteriorly or concave poste- riorly (Fig. 1 D), if convex anteriorly (Figs 1 C,E), R4 lacking appendix on either wing (Figs 4 F, J) (except T. leucostomus), if concave posteriorly not strongly convex anteriorly (Fig. 1 B) Tabanus]......................................... 20
20 Eyes with microsetae................................................................................. 21
- Eyes bare.......................................................................................... 22
21 Subcallus flat, entirely dusted; antennae strongly contrasting with all segments orange and flagellum black; R4 lacking appen- dix on either wing...................................................................... T. lunatus Fabricius
- Subcallus gently bulging, entirely smooth; antennae black, flagellum indistinctly reddish at extreme bases; R4 with appendix on at least one wing.................................................................. T. leucostomus Loew
22 Subcallus strongly bulging, entirely smooth................................................... T. mordax Austen
- Subcallus flat, entirely dusted, at most smooth on ventral margin.............................................. 23
23 Subcallus partly smooth on upper margin in contact with lower callus.......................................... 24
- Subcallus entirely dusted............................................................................. 25
24 Abdomen blackish-brown to black with row of grey median triangles and with 2 separated whitish-grey longitudinal spots that are longest on segment 2; R4 with appendix on at least one wing.................................. T. sufis Jaennicke
- Abdomen greyish with 4 longitudinal, elongated and separated brown spots; R4 lacking appendix on either wing.............................................................................................. T. arenivagus Austen
25 Parafacial band distinct............................................................................... 26
- No parafacial band.................................................................................. 27
26 Antennae reddish brown; R4 with appendix on at least one wing................................... T. rupinae Austen
- Antennae black; R4 without appendix on either wing............................................. T. leleani Austen
27 Body length more than 14 mm ......................................................................... 28
- Body length less than 14 mm .......................................................................... 29
28 Eyes with sharply distinct band (Fig. 1 E); abdomen tapered at both ends; scutellum black with reddish-brown apex.................................................................................... T. taeniola Palisot de Beauvois
- Eyes with less distinct band (Fig. 1 B); abdomen broad; scutellum greyish-brown................. T. autumnalis Linnaeus
29 Brownish black species; abdomen blackish-brown with 2 longitudinal white oval separated spots and row of grey median tri- angles................................................................................. T. albifacies Loew
- Greyish brown species; abdomen greyish with four longitudinal brown stripes................................... 30
30 R4 with appendix; post occipital rim broad; antennal scape brownish grey........................ T. separatus Efflatoun
- R4 lacking appendix; post occipital rim narrow; antennal scape pinkish or yellowish grey.......................... 31
31 Scape yellowish grey; abdomen with inner margin of two median stripes expanded on terga 3 and 4......... T. gratus Loew
- Scape pinkish; abdomen with inner margin of two median stripe parallel, not expanded............... T. accensus Austen
description: Published as part of Abu El-Hassan, Gawhara M. M., Badrawy, Haitham B. M., Fadl, Hassan H. & Mohammad, Salwa K., 2013, A review of the genus Tabanus Linnaeus, 1758 (Diptera: Tabanidae) from Egypt, pp. 559-576 in Zootaxa 3691 (5) on pages 560-562, DOI: 10.11646/zootaxa.3691.5.3, http://zenodo.org/record/215691