Simulium (Wilhelmia) pseudequinum SeÂguy, 1921

Crosskey, Roger W. & Crosskey, Margaret E., 2000, An investigation of the black ¯ y fauna of Andalusia, southern Spain (Diptera: Simuliidae), Journal of Natural History 34 (6), pp. 895-951 : 936-937

25. Simulium (Wilhelmia) pseudequinum SeÂguy

Spain references: Grenier and Bertrand (1954: 452, as equinum var. mediterraneum ), Carlsson

(1969, as Wilhelmia salopiensis [mm only, misidenti®ed] and W. mediterranea ), Beaucournu-

Saguez (1975a, 1975b, as mediterraneum), GonzaÂlez PenÄa et al. (1986), GonzaÂlez PenÄa

et al. (1987), GonzaÂlez PenÄa (1990), GonzaÂlez (1997).

Andalusia records

Authors’ material. Site 3: 1 pupa, 1 larva. Site 4: 2 pupae, 2 larvae. Site 5: 1 larva. Site 6: 1 (l 1), 14 pupae, 21 larvae. Site 7: 1 pupa, 15 larvae. Site 8: 3 pupae, 1 larva. Site 9: 9 larvae. Site 13: 1 (l1), 5m (1), 9 pupae, 2 larvae. Site 16: 11 pupae, 9 larvae. Site 20: 105 pupae, 28 larvae. Site 24: 1m (1), 32 pupae, 55 larvae. Site 26: 1m (1), 6 pupae, 17 larvae. Site 34: 1 pupa, 5 larvae. Site 36: 3 pupae, 6 larvae. Site 38: 2 pupae, 6 larvae. Site 45: 11 pupae, 2 larvae. Site 46: 1m (1), 22 pupae, 17 larvae. Site 72: 3 (l 1), 1m (1), 71 pupae, 15 larvae. Site 73: 4 pupae, 5 larvae. Site 74: 2 larvae. Site 75: 11 pupae, 14 larvae. Site 76: 3m (2 1), 1 pupa. Site 77: 2m (1), 54 pupae, 68 larvae. Site 79: 4 pupae, 1 larva. Site 81: 5 pupae, 1 larva. Site 82: 3 pupae, 3 larvae. Site 85: 1m (1), 2 pupae, 7 larvae. Site 90: 1 pupa. Site 93: 1 (l1), 1m (1), 15 pupae, 1 larva. Site 94: 3 pupae, 5 larvae. Site 95: 1 (l 1), 10 pupae, 10 larvae. Site 98: 4 pupae, 1 larva. Site 100: 2 pupae. Site 103: 5 pupae. Site 105: 7 pupae, 19 larvae. Site 110: 1 pupa. Site 113: 2 pupae, 1 larva. Site 115: 1 (l1), 2 pupae, 1 larva. Site 125: 1 (l1). Site 127: 1 (l1), 9 pupae, 4 larvae. Site 135: 1 (l1), 7 pupae, 1 larva.

Other specimens seen. AlmerõÂa: 2m, Alhama de AlmerõÂa, 5 km W of AlmerõÂa, 200±500 m [WF39], 28.iii.1966 (Lyneborg) (ZMC) [misident.`salopiensis ’ in Carlsson, 1969]. Granada: 32, l 29m, AlmunÄecar, 0±30 m [VF36], 17.vii.1960 except 1 l 20.vii.1960 (Vockeroth) (CNC, some BMNH) [ mediterranea in Carlsson, 1969]; 10m, Barranco de Miranda, 8 km SW of Orgiva, 300 m [VF57], 16.iv. (8m) and 23.iv.1966 (2m) (Lyneborg and Langemark) (ZMC) [ mediterranea in Carlsson, 1969]; 2m, Sierra de Contraviesa , 500 m [VF67], 18.iv.1966 (ZMC) [ mediterranea in Carlsson, 1969]; 1m, RõÂo LanjaroÂn, 600 m [VF58], 26.iv.1966 (Lyneborg and Langemark) (ZMC) [ mediterranea in Carlsson, 1969); 12m, Orgiva, RõÂo Guadalfeo, 300 m [VF68], various dates 3± 18.iv.1966 (Lyneborg and Langemark) (ZMC) [ mediterranea in Carlsson, 1969, except 5 misident.`salopiensis ’].

Previous reports. CoÂrboda: RõÂo Yeguas (UH95336 2) (refs GonzaÂlez PenÄa et al., 1986; GonzaÂlez PenÄa, 1990). Granada: Purullena, RõÂo Fardes, 7 km W of Guadix [VG83] (ref. Beaucournu-Saguez, 1975a). JaeÂn: RõÂo Rumblar [VH21], irrigation channel to RõÂo Guadiel [VH31] and RõÂo GuadalbulloÂn, 13 km S of JaeÂn [VH31] (ref. Beaucournu-Saguez, 1975a). MaÂlaga: Arroyo de la Venta (UF3394), RõÂo Campanillas (UF6565, UF6588, UF6672), RõÂo Genal (TF9542), RõÂo Grande (UF3363, UF4866), RõÂo Guadalhorce (UF4772, UG7106), RõÂo Guadalteba (UF2688), RõÂo Guadiaro (TF9253) (refs GonzaÂlez PenÄa et al., 1987; GonzaÂlez PenÄa, 1990). (Also Carlsson, 1969: see data for specimens seen.)

Remarks

This species is abundant in Andalusia in rivers and larger arroyos and sometimes in aqueducts below about 800 m altitude. Pupae are easily recognized by the slender forwardly directed gill tubes that are very narrow, wrinkled basally (®gure 49), and often sharply kinked at their attachment points. The constriction of the ®lament bases provides a con®rmatory character for larvae in which the pupal gill histoblast is at an advanced stage, allowing them to be distinguished from those of S. lineatum and S. equinum which are otherwise almost identical. For a note on the spermatheca see the remarks under S. (W.) sergenti below.