Morellia (M.) hortorum ( Fallén, 1817 ), Fallen, 1817

Pamplona, Denise, Nihei, Silvio S., Couri, Márcia S. & Pont, Adrian C., 2016, Taxonomy of Morellia Robineau-Desvoidy (Diptera: Muscidae): revision of the subgenera Morellia s. str. and Parapyrellia Townsend, Zootaxa 4163 (1), pp. 1-110 : 44-47

18. Morellia (M.) hortorum ( Fallén, 1817)

( Figs 64–70 )

Musca hortorum Fallén, 1817: 252 . Type locality: SWEDEN, probably Skåne province. Lectotype Ƌ, NHRS (des. Pont 1984: 286; seen).

Anthomyia hortorum Wiedemann, 1817: 83 . [Junior secondary homonym, preocc. in Morellia by Musca hortorum Fallén, 1817 .] Type locality: GERMANY, Schleswig-Holstein, Kiel district. Lectotype ♂, NHMW (des. Pont 1997: 98; seen).

Sarcophaga obscura Meigen, 1826: 32 , plate 248, fig. 2. Type locality: not stated (GERMANY, probably Hamburg). Holotype Ƌ, not located in NHMW and presumed destroyed ( Pont 1986b: 234).

Morellia agilis Robineau-Desvoidy, 1830: 405 . Type locality: FRANCE, Saint-Sauveur. Syntypes, formerly in Robineau- Desvoidy collection, now destroyed (not MNHN; see Evenhuis et al. 2010).

Morellia horticola Robineau-Desvoidy, 1830: 405 . Type locality: FRANCE, Saint-Sauveur. Syntypes, formerly in Robineau- Desvoidy collection, now destroyed (not MNHN; see Evenhuis et al. 2010).

Morellia concolor Robineau-Desvoidy, 1830: 406 . Type locality: FRANCE, Saint-Sauveur. Syntypes, formerly in Robineau- Desvoidy collection, now destroyed (not MNHN; see Evenhuis et al. 2010).

Curtonevra caerulescens Macquart, 1834a: 12 ; 1834b: 148. Unjustified replacement name for Morellia horticola Robineau- Desvoidy, 1830.

Musca (Morellia) importuna Haliday, 1836: 149 . Type locality: NORTHERN IRELAND, County Down, Holywood. Lectotype ♂, ZMHB (des. Pont & Werner 2006: 56; seen).

Anthomyia nitens Wiedemann in Gistel, 1857: 73 . Unavailable name, published in synonymy with Musca hortorum Fallén [as " Anth. hortorum ( nitens mihi) Fall."], and not validated subsequently. Locality: GERMANY, Hessen, Ofleiden: 1 Ƌ, NHMW (see Pont 1997: 106).

Cyrtoneura pilipes Rondani, 1862: 215 . Type locality: ITALY, hills of the Parma province, Etruria and Brescia. Syntypes: ƋƋ, MZLS.

Alina pilipes Robineau-Desvoidy, 1863: 640 . [Junior secondary homonym, preocc. in Morellia by Cyrtoneura pilipes Rondani, 1862 .] Type locality: FRANCE, Paris district. Holotype/syntypes Ƌ, formerly in Robineau-Desvoidy collection, now destroyed (not MNHN; see Evenhuis et al. 2010).

Morellia setoaenescens Sychevskaya, 1963: 182 . Nomen nudum; Zimin MS name, included in list of species from Karetigin (Gamsk) as " setoaenescens Zim. (in litt)". No material found in ZIN ( Pont 2004: 90).

Redescription. Colour. Black, with grey pruinosity. Frontal vitta and upper half of fronto-orbital plate black; face and lower half of fronto-orbital plate, parafacial and antenna black with silver pruinosity; gena with grey pruinosity; palpus brown; mesonotum metallic black with one silver dusted central vitta along presutural acrostichals, postpronotal lobe, notopleuron and other pleura silver pruinose; legs dark brown; haltere with brown stalk and yellow knob; calypters yellowish-white, upper calypter on outer half white and opaque; wing without dark markings; abdomen with a shifting tessellated pattern and with silver pruinosity ventrally.

Male. Body length: 8.0–9.0 mm; wing length: 7.0–8.0 mm.

Head. Eyes bare but with the usual minute and scattered hairs, separated at level of anterior ocellus by 0.20– 0.25 of head width; frons divergent towards lunule; ocellar triangle with a pair of strong setae and many long setulae; 20–21 pairs of frontal setae; postpedicel about 1.3–1.6 times the length of pedicel; pedicel with 2 setae and few setulae; arista plumose, with 17–19 cilia, bare apicad, and with some secondary plumes as far as level of 4th to 6th cilia; vibrissa longer than arista; 1 strong supravibrissal seta, more than half the length of vibrissa, and many other long setulae that extend to level of middle of postpedicel; 6–7 subvibrissal setae followed by 7–8 genal setae.

Thorax. Acrostichals 0+1; dorsocentrals 3+4; intra-alars 1+1; presutural 1; prealar 1, weak; supra-alars 2; postpronotals 3; notopleuron with 2 long subequal setae and covered with ground-setulae; postalars 2; intrapostalar 1; scutellum with 1 basal, 1 latero-discal and 1 apical pairs of setae, and latero-ventrally with many setae, the basalmost ones downcurved; postalar wall bare; suprasquamal ridge bare; proepisternal depression bare; proepimeron with about 5 long setae and many setulae; prosternum broad and bare; anepisternum with a posterior row of about 10 setae, with 3–4 weak setae upcurved on upper-anterior corner, and covered with long setulae; katepisternals 1+2; anepimeron extensively setulose; katepimeron with 1 setula; anatergite bare; katatergite setulose. Legs: fore femur with a posterodorsal row of setae on apical two-thirds becoming shorter basad, a complete posteroventral row of setae, and some complete ventral rows of long, strong, also fine setae; fore tibia with a dorsal row of short setae on apical two-thirds, 3 strong and long posterior setae at middle, the lowermost one almost posteroventral, some fine and long posteroventral setae on apical half, the lowermost one stronger, a brushlike ctenidium of many fine setae on ventral surface, one anterodorsal and one dorsal preapical setae, and one posteroventral and one ventral apical setae; fore tarsus with about 4 setae at base and a golden brush ventrally; mid femur without a tubercle, with no anterior seta, an anterodorsal row of setae on basal two-thirds, a row of some short ventral setae on basal half, some strong and very short anterodorsal to dorsal setae and 7 stronger posterior to posterodorsal preapical setae; mid tibia with an anterodorsal comb-like row of short setulae on basal two-thirds, of which those in the apical third are more scattered and longer, with 3 short posterodorsals on middle third, 4 strong posterior setae on basal two-thirds, 1 strong posteroventral seta on apical third, one anterodorsal, one dorsal and one posterodorsal apical setae, one anteroventral, one posteroventral and one ventral apical setae; hind femur with an anteroventral row of setae, strongest on apical third, an anterodorsal row of setae, a group of posterior setulae at base, 4–5 posterior setae on apical third, and few posteroventral setulae on apical fourth; hind tibia with about 7–10 short and subequal anteroventral setae on apical half, an anterodorsal row of short and strong setae on basal half, with one stronger seta at middle, a dorsal row of short but strong setulae, 1 strong and long posterodorsal seta on apical third, 2–4 long posterior setae on basal third, 1 anterodorsal, 1 dorsal and 1 posterodorsal preapical setae, and 1 anteroventral and no posteroventral apical setae; hind tarsus without modifications in shape or bristling. Wing with a uniform covering of microtrichia; dm-cu almost sinuous; stem-vein bare on dorsal surface, and ventrally with about 2 short setulae before humeral cross-vein and bare after humeral cross-vein; R2+3 bare on dorsal and ventral surfaces; R4+5 setulose from base to halfway or almost all the way to r-m on dorsal surface and at base or basal third on ventral surface; 5–6 strong setae on basicosta.

Abdomen. With lateral tufts of setulae; tergites 4 and 5 with long setae apically; sternite 1 setulose; posterior margin of sternite 5 concave and with a few setae on membrane ( Fig. 64 ).

Terminalia. Outer middle third of cercal plate not convex; cercal plate with some spines ventrally; surstylus with some short setulae and 2 longer setae ( Figs 65–67 ); aedeagus with spicules on anterior membrane of distiphallus; gonopod with 2 long and strong setae on basal third and one seta apically; paramere with many setae apically and some setulae on middle third ( Fig. 68 ).

Female. Body length: 7.0– 7.5 mm; wing length: 6.0–7.0 mm.

Similar to male, differing as follows: eyes separated at level of anterior ocellus by 0.44–0.46 of head width; fronto-orbital plate with 3–4 proclinate and 1 reclinate setae; about 10–11 frontal setae; fore femur without ventral rows, instead with a brush of strong and short setulae on ventral surface; fore tibia with a row of strong ventral setulae, without the posterior and posteroventral setae; mid femur with weaker posteroventral setae, without anterodorsal to dorsal and with 4 posterodorsal to posterior preapical setae; mid tibia without the anteroventral comb; hind femur with weaker setae, about 3 posterior setulae at base; with 4 anterodorsal setae, the middle one stronger.

Ovipositor. Tergite 6 rod-like and shaped as 2 anchors, posteriorly with setae and 2 plates with setae; tergite 7 rod-like, anteriorly curved, posteriorly with 2 plates with many setulae; tergite 8 like 2 broad rods, posteriorly with 2 plates with setae; sternite 6 a single rod, posteriorly with 1 plate with setae; sternite 7 a single rod, posteriorly with 3 plates with many setae; sternite 8 with 2 rods, posteriorly with 2 small plates with setae; epiproct with 4 setae; hypoproct longer than broad with many setae; cercus cylindrical and long ( Figs 69–70 ).

Material examined. SWEDEN: probably Skåne province, lectotype Ƌ of Musca hortorum Fallén ( NHRS) ; Västmanland, Nora District , 1km NW Sund, 21.vi.1986 , A. C. Pont, 1 Ƌ and 1 ♀ ( BMNH) ; GERMANY: Schleswig-Holstein, Kiel district , lectotype Ƌ of Anthomyia hortorum Wiedemann ( NHMW) ; Hessen, Ofleiden , 1 Ƌ, as “ Anthomyia nitens Wiedemann ” ( NHMW) ; NORTHERN IRELAND: County Down, Holywood , lectotype Ƌ of Musca importuna Haliday ( ZMHB) ; GEORGIA: Greater Caucasus Mts, Kazbegi , 5.vii.1983 , A.C. Pont, 1 Ƌ ( BMNH) ; AUSTRIA: Lower Austria, Wienerwald, Kaltenleutgeben , 25.vii.1981 , A.C. Pont, 1 ♀ ( BMNH) .

Distribution. PALAEARCTIC: throughout the region, from Sweden to Spain, east to China and Japan (Hokkaïdo).

Figures

FIGURES 64 – 70. Morellia (M.) hortorum (Fallén). 64. Sternite 5, male. 65. Cercal plate and surstyli, male. 66. Left surstylus, male. 67. Cercal plate, male, ventral view. 68. Phallic complex, lateral view. 69. Ovipositor, dorsal view. 70. Ovipositor and spermathecae, ventral view.