California, USA 3 d'a DB 662 Montana, USA 3 ~~ c.
20 mm; DB 794 Lousiana, USA 1 aDB 795 Lousiana,
USA 3 d'~ 1 ~ c. 25 mm; DB 868 Florida, USA 7 ~
~ c. 20 mm; DB 980 Saskatchewan, Canada 1 ~ c. 25
mm; DB 1092 Leon, Tallahassee, Florida, USA 8 d'd'
20.0 (17.4-23.3) mm, and 5~~21.2 (20.0-22.0) mm;
HMPS VlI/a-2770 Fort Collins, Colorado, USA 2 d'd'
19.6, 21.8 mm, 2 ~~ 20.9, 21.8 mm; USNM 91857
Alton, St. Tammany Parish, Lousiana, USA 5:fd18.8
(18.3-19.4) mm, 5~~ 17.4 (17.2-17.9) mm.
Remark. In 67 females, we found only two specimens with ovaries extending into thoracic segment 11
(USNM 91857, and DB 181).
Streptocephalus similis Baird, 1852
Material examined. DB 52 Texas, USA 3 d'a DB
88 Nuevo Leon, Mexico 2 d'a DB 965 Kenedy, Texas,
USA 4d'd'17.8 (17.4-18.5) mm, 2~~ 17.5,18.5 mm;
HMPS VlI/a-2772 3 d'd'15.1 (15.0-15.3) mm, 2 ~~
14.6, 15.0 mm; USNM 101154 N Valles, Tamaulipas,
Mexico 5 d'd'1O.9 (10.7-11.6) mm, 5 ~~ 14.0 (9.615.3) mm.
Streptocephalus spinosus Daday, 1908
Material examined. HNHM I1A-99 Madagascar
20.0 mm (specimen in bad condition); MNHN
Bp 238 1 ~2~~(specimens in bad condition).
Remark. Because of the bad condition of the material it was not possible to determine the type of ovaries.
Streptocephalus woottoni Eng, Belk & Eriksen, 1990
Material examined. DB 1071 San Diego Co. California, USA 1 d'17.7, 4Wc. 15 mm.
Species of the cafer group
Distribution. Africa.
Streptocephalus cafer (Loven, 1847)
Material examined. UG 218 Boshofdistrict,
Bloemfontein, South Africa 3 ct:126.1 (23.5-27.7) mm;
UG 221 Boshofdistrict, Bloemfontein, South Africa
221
12 d'd'15.0 (13.5-16.3) mm; UG 223 Boshofdistrict,
Bloemfontein, South Africa 1~3.3 (20.5-27.7) mm;
UG 245 Spitskoppe, Namibia 10d'd'15.5 (13.8-17.4)
mm, 72~~ 14.3 (11.8-15.9) mm.
Remarks. Uniramous ovaries extended from genital segment 1 to abdominal segment 4.
Streptocephalus coomansi Brendonck & Belk, 1993
Material examined. KBIN IG 27.885 Thika Rd.
Nairobi, Kenya, paratypes 2d'~ 1 ~ 17.9 mm.
Streptocephalus indistinctus Barnard, 1924
Material examined. BMNH 1932.2.25. 111-119
Ovamboland, South Africa 13 d'd'subadults, 25 ~~
mostly subadult, 3~~adult 16.1 (15.9-16.4) mm; UG
227 Boshofdistrikt, Bloemfontein, South Africa lOotr
20.3 (17.9-22.5) mm.
Remark. In males, a distinctive structure is a pair
of small acuminate processes situated laterodorsally on
each side of the head, between the pedunculated eye
and the mandible.
Streptocephalus trifidus Hartland-Rowe, 1968
Material examined. BMNH 1969.1.2.3 Wankie
National Park, Rhodesia 2 d'd'23.7, 17.9 mm, 3 ~~
16.1 (15.0-16.8)mm; UG 116 Hwange, Zimbabwe 1 d'
20.5 mm; UG 246 laboratory culture 3 d'd'11.9 (10.912.7) mm.
Streptocephalus sp. A
Material examined. UG 112 Acbua, Rukoko,
Burundi 9d'd'16.5 (15.5-17.9) mm, 6~~ 13.1 (12.214.2) mm.
Species of the dichotomus group
Distribution. India, Myanmar (Burma), and Arabian
peninsula.
Streptocephalus dichotomus Baird, 1860
Material examined. HMPS VlI/a-2765 1 d'(not full
grown); GM 7 Periyar, Tamil Nadu, India 3d'~9.0
(28.1-30.7) mm; UG 046 Poundi, Madras, India 1 d'
20 mm; DB 794 Lousiana, USA 1 aDB 795 Lousiana,
USA 3 d'~ 1 ~ c. 25 mm; DB 868 Florida, USA 7 ~
~ c. 20 mm; DB 980 Saskatchewan, Canada 1 ~ c. 25
mm; DB 1092 Leon, Tallahassee, Florida, USA 8 d'd'
20.0 (17.4-23.3) mm, and 5~~21.2 (20.0-22.0) mm;
HMPS VlI/a-2770 Fort Collins, Colorado, USA 2 d'd'
19.6, 21.8 mm, 2 ~~ 20.9, 21.8 mm; USNM 91857
Alton, St. Tammany Parish, Lousiana, USA 5:fd18.8
(18.3-19.4) mm, 5~~ 17.4 (17.2-17.9) mm.
Remark. In 67 females, we found only two specimens with ovaries extending into thoracic segment 11
(USNM 91857, and DB 181).
Streptocephalus similis Baird, 1852
Material examined. DB 52 Texas, USA 3 d'a DB
88 Nuevo Leon, Mexico 2 d'a DB 965 Kenedy, Texas,
USA 4d'd'17.8 (17.4-18.5) mm, 2~~ 17.5,18.5 mm;
HMPS VlI/a-2772 3 d'd'15.1 (15.0-15.3) mm, 2 ~~
14.6, 15.0 mm; USNM 101154 N Valles, Tamaulipas,
Mexico 5 d'd'1O.9 (10.7-11.6) mm, 5 ~~ 14.0 (9.615.3) mm.
Streptocephalus spinosus Daday, 1908
Material examined. HNHM I1A-99 Madagascar
20.0 mm (specimen in bad condition); MNHN
Bp 238 1 ~2~~(specimens in bad condition).
Remark. Because of the bad condition of the material it was not possible to determine the type of ovaries.
Streptocephalus woottoni Eng, Belk & Eriksen, 1990
Material examined. DB 1071 San Diego Co. California, USA 1 d'17.7, 4Wc. 15 mm.
Species of the cafer group
Distribution. Africa.
Streptocephalus cafer (Loven, 1847)
Material examined. UG 218 Boshofdistrict,
Bloemfontein, South Africa 3 ct:126.1 (23.5-27.7) mm;
UG 221 Boshofdistrict, Bloemfontein, South Africa
221
12 d'd'15.0 (13.5-16.3) mm; UG 223 Boshofdistrict,
Bloemfontein, South Africa 1~3.3 (20.5-27.7) mm;
UG 245 Spitskoppe, Namibia 10d'd'15.5 (13.8-17.4)
mm, 72~~ 14.3 (11.8-15.9) mm.
Remarks. Uniramous ovaries extended from genital segment 1 to abdominal segment 4.
Streptocephalus coomansi Brendonck & Belk, 1993
Material examined. KBIN IG 27.885 Thika Rd.
Nairobi, Kenya, paratypes 2d'~ 1 ~ 17.9 mm.
Streptocephalus indistinctus Barnard, 1924
Material examined. BMNH 1932.2.25. 111-119
Ovamboland, South Africa 13 d'd'subadults, 25 ~~
mostly subadult, 3~~adult 16.1 (15.9-16.4) mm; UG
227 Boshofdistrikt, Bloemfontein, South Africa lOotr
20.3 (17.9-22.5) mm.
Remark. In males, a distinctive structure is a pair
of small acuminate processes situated laterodorsally on
each side of the head, between the pedunculated eye
and the mandible.
Streptocephalus trifidus Hartland-Rowe, 1968
Material examined. BMNH 1969.1.2.3 Wankie
National Park, Rhodesia 2 d'd'23.7, 17.9 mm, 3 ~~
16.1 (15.0-16.8)mm; UG 116 Hwange, Zimbabwe 1 d'
20.5 mm; UG 246 laboratory culture 3 d'd'11.9 (10.912.7) mm.
Streptocephalus sp. A
Material examined. UG 112 Acbua, Rukoko,
Burundi 9d'd'16.5 (15.5-17.9) mm, 6~~ 13.1 (12.214.2) mm.
Species of the dichotomus group
Distribution. India, Myanmar (Burma), and Arabian
peninsula.
Streptocephalus dichotomus Baird, 1860
Material examined. HMPS VlI/a-2765 1 d'(not full
grown); GM 7 Periyar, Tamil Nadu, India 3d'~9.0
(28.1-30.7) mm; UG 046 Poundi, Madras, India 1 d'