Pegomya terminalis Rondani 1866
Creators: name: Michelsen, Verner
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Anthomyiidae
Pegomya
Pegomya terminalis

description: Pegomya terminalis (Rondani, 1866)
Figs. 2, 6, 7, 16–21, 22, 23.
Chorthophila terminalis Rondani, 1866: 162.
Chorthophila divergens Rondani, 1866: 170. Synonymized by Hennig (1973: 650). Pegomyia terminalis (Rondani); Stein 1906: 104.
Pegomya terminalis (Rondani); Hennig 1973: 650.
For further references see Hennig (1973: 650).
Description. Externally similar to P. granadensis except for smaller body size and lighter colour of appendages and abdomen. Very small to medium-sized (WL 3.4–5.0mm; n = 92).
Male. Antennal scape and pedicel and basal part of palpus often brown to ocreous brown. Legs ochreous yellow to yellow, extensively dark brown infuscated on fore femur and to varying extent even on distal parts of mid and hind femora; tarsi dirty yellowish brown. Ground colour of abdomen brownish black except to varying extent ochreous yellow or yellow on ventral and caudal parts, often even along hind margins of tergites II–V; mid-dorsal dark stripe well defined, medium-wide.
Frons at narrowest point wider to distinctly narrower than ocellar tubercle; parafrontalia somewhat variable in width, contiguous to narrowly separated. Frons usually with a pair of tiny fronto-orbital setulae on upper part, but without interfrontal setulae at mid-length. Vein C with a full row of dorsal setulae. Mid tibia with 1 ad, 1 pd, 1–2 p submedian setae. Tergite V with hind marginal but without discal setae. Tergite VI with some setulae in front of hind marginal row of setae.
Terminalia as in Figs. 16–21: shape and vestiture of surstyli in both caudal and lateral views diagnostic.
Female. Facial parts of head, legs, preabdomen, and sometimes even basal articles of antennae, palpal bases and distal parts of scutellum ochreous brown to ochreous yellow. Abdomen rather shiny, very thinly whitish grey dusted, without a mid-dorsal darker stripe.
Frons ca. 0.4x as wide as total head width. Frontal vitta bare, exceptionally with pair of fine setulae. Prealar shorter than posterior notopleural seta. Vein C with a full row of dorsal setulae. Mid tibia with 1 ad, 1 pd, 1 p submedian setae. Mid- and hind femora with fewer pv setae confined to basal third. Abdomen on tergite V without discal setae in addition to row of hind marginal setae. Sternite V with only a few hind marginal setae. Oviscapt (Figs. 22, 23) with a cutting edge formed at apical margins of cerci.
Material examined. HUNGARY / ROMANIA [ZMUC]: 1 female (Sajó). ISRAEL [MNNHT]: Hatzbabi, 1 female 24.iv.1982 (F. Kaplan); Tel-Dan, 1 male 20.iv.1974 (A. Freidberg). ITALY [ZMUC]: Firenze, 1 male, 1 female 10–18.v.1986 (T. Pape). MOROCCO [ZMUC]: Asni area, 1100–1400m, 9 males, 8 females 8– 10.iv.1989 (Zool. Mus. Copenh. Exp.); Chechaouèn, 600m, 15 males, 6 females 22.iv.1989 (Zool. Mus. Copenh. Exp.). SPAIN [ZMUC]: Alicante: Beniaia, stream bed, on flowering Salix, 1 male 18.iii.2007 (V. Michelsen); Almeria: Rioja, 15 males, 2 females 7–22.iii.1966 (L. Lyneborg; W. Hackman); Rio Andarax, Fondón, 2 males, 1 female 18.iii.1966 (L. Lyneborg); Castellón: Morella, 800m, 1 female 27.vi.1984 (V. Michelsen); Granada: Rio Guadalfeo nr. Orgiva, 300m, 4–5.iv.1966 3 males, 2 females, 18.iv.1966 1 female (Lyneborg, Martin & Langemark); Rio Lanjaron nr. Lanjaron, 600m, 1 male 26.iv.1966 (Lyneborg, Martin & Langemark); Lérida: Area di Cadi, 1100m, damp meadow, 42.21N / 01.48E, 1 male, 1 female 7.vii.1990 (Barták); Málaga: 3km N Canillas de Albeida, 1 male 2.ix.1999 (V. Michelsen); Teruel: Albarracín, 1000–1500m, 1 male, 1 female 29.vi.1984 (V. Michelsen). TUNISIA [ZMUC]: Teskraia, 30km W Bizerte, 1 female 25.iii.1986 (Zool. Mus. Copenh. Exp.); Tabarka area, 3 males, 2 females 7–18.v.1988 (Zool. Mus. Copenh. Exp.). TURKEY [ZMUC]: Antalya: Köprülü Kanyon Nat. Pk., 1 female 28–29.iv.1999 (V. Michelsen). UZBEKISTAN [ZMUC]: Chimgan, 1200m, damp valley, 41.38N / 70.02E, 1 female, 18.v.1989 (Barták); Samarkand, along river Zeravshan, 39.38N / 67.04E, 2 females 22.v.1989 (Barták); Zeravshan res., deciduous wood, 39.38N / 67.08E, 3 females 24.v.1989 (Barták).
Biology. This is mainly a cool or early season species in the Mediterranean, frequently found among lush vegetation in stream beds. I have found it on flowering Salix -shrubs. The larval host plant is unknown, but a likely candidate is Equisetum ramossissimum Desf., a species of horsetail with a mainly Mediterranean distribution.
Distribution. Apparently confined to the southern part of the West Palaearctic subregion, where it ranges from Morocco and Spain in the west to Uzbekistan in the east, and from France, Italy and Romania in the north to Tunisia, Turkey and Israel in the south. Karl (1930) recorded the species from Zoppot [= Sopot], a Polish resort on the Baltic coast together with a description of both male and female that fits the present species. However, the absence of authentic material makes me agree with Hennig (1973) that this record far north of its documented range is highly questionable. Nearctic records of P. terminalis (see Griffiths 1983, 1997) refer in my opinion to a different, probably unnamed species standing very close to P. glabroides (q.v.). Both species have boreal distributions in their respective regions, unlike P. terminalis which is a Mediterranean species.
description: Published as part of Michelsen, Verner, 2008, The Palaearctic species of the Pegomya terminalis species group (Diptera: Anthomyiidae), with descriptions of two new species, pp. 31-46 in Zootaxa 1781 on pages 38-41, DOI: 10.5281/zenodo.274299