Morellia (M.) podagrica ( Loew, 1857 )

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 : 70-73

31. Morellia (M.) podagrica ( Loew, 1857)

( Figs 117–123 )

Cyrtoneura podagrica Loew, 1857: 45 . Type locality: AUSTRIA, in the high mountains, Wiener Schneekoppe, the Carinthian Alps , and also Vienna. Syntypes: 4 ♂♂, 4 ♀♀ , ZMHB ( Hennig 1964: 972; Pont & Werner 2006: 84; seen), and 1 ♂, 1 ♀, MCZ ( Pont & Werner 2006: 84; seen).

Morellia pulchra Curran, 1926: 213 . Type locality: CANADA, Ontario, Low Bush, Lake Abitibi. Holotype Ƌ, CNC, no. 1946 ( Arnaud & Owen 1981: 175; Cooper & Cumming 2000: 80).

Redescription. Colour. Black, with grey pruinosity, extensively distributed in female. Frontal vitta and frontoorbital plate black; face and parafacial black with silver pruinosity; gena with grey pruinosity; antenna black with grey-golden pruinosity; palpus brown; mesonotum metallic black with a grey-dusted central vitta running along acrostichals that appears silvery anteriorly, especially when viewed from behind; pleura grey pruinose; postpronotal lobe, notopleuron and anepisternum silver pruinose; legs black; haltere with brown stalk and yellow knob; calypters whitish, upper calypter on outer half white and opaque; wing without dark markings; last abdominal tergite with silver pruinosity.

Male. Body length: 8.0–10.0 mm; wing length: 7.5–8.0 mm.

Head. Eyes bare but with the usual minute and scattered hairs, separated at level of anterior ocellus by about 0.23 of head width; frons divergent towards lunule; ocellar triangle with about 4 pairs of strong setae; 22 pairs of frontal setae; postpedicel about 1.3–1.5 times the length of pedicel; pedicel with 2 setae and many setulae; arista plumose, with 15–21 cilia, bare apicad, and with some secondary plumes as far as level of 5th to 8th cilia; vibrissa as long as arista; 1 strong supravibrissal seta, half as long as vibrissa, and many other setulae that extend to level of basal fourth of postpedicel; 5 subvibrissal setae followed by 7 genal setae.

Thorax. Acrostichals 0+2; dorsocentrals 3+4; intra-alars 1+1; presutural 1; prealar 1; supra-alars 2; postpronotals 4, the innermost weaker; notopleuron with 2 long, subequal setae and covered with ground-setulae; postalars 2; intrapostalar 1; scutellum with 1 basal, 1 latero-discal, 2 discal and 1 apical pairs of setae, and lateroventrally with many setae, the basalmost ones downcurved; postalar wall bare; suprasquamal ridge bare; proepisternal depression bare; proepimeron with about 6 long setae and a few 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 posteroventral row of setae on apical two-thirds becoming shorter basad, and a posterior row of much shorter setae on basal third; fore tibia with an anterodorsal row of short and weak setae, 6 long posteroventral setae on apical half, 1 anterodorsal, 1 dorsal and 1 posteroventral preapical setae, anterior surface with a brush-like ctenidium of golden setulae, and 1 ventral apical seta; fore tarsus with a golden ctenidium and few long setulae on apical half; mid femur with a tubercle at apex of anterodorsal to posterodorsal surfaces bearing about 17–20 short spines, the posterodorsal ones longer, an anterodorsal row of setae on basal half, and 4–5 ventral setae on basal half; mid tibia narrowed at base, with an anterodorsal comb-like ctenidium of short spines on basal fourth and fine setae on apical three-fourths, a posterodorsal row of 4–6 stronger setae on basal two-thirds, 1 strong posterior seta on middle third, 1 anterodorsal and 1 dorsal preapical setae and 2 anteroventral, 1 posteroventral and 2 ventral apical setae; hind femur with an anteroventral row of setae, the 3 apicalmost strongest, an anterodorsal row of setae, a group of posterior setulae at base, and few long posteroventral setulae on apical fourth; hind tibia slightly curved, with 6 short anteroventral setae on apical two-thirds, an anterodorsal row of long and weak setae, a posterodorsal row of weak setae and a long and strong posterodorsal seta on apical third, 3 posteroventral setulae on middle third, 1 dorsal, 1 posterodorsal and no anterodorsal preapical setae, and 1 posteroventral and 1 ventral apical setae; hind tarsus with a golden brush ventrally. Wing with a uniform covering of microtrichia; dm-cu sinuous or almost sinuous; stem-vein bare on dorsal surface, and ventrally with about 1 or 2 short setulae before humeral cross-vein and bare after humeral cross-vein; R2+3 bare on dorsal and ventral surfaces; R4+5 setulose at base on dorsal and ventral surfaces; 5–6 strong setae on basicosta.

Abdomen. With a lateral tuft of setulae on syntergite 1+2; tergites 3 and 4 with setae apically; tergite 5 with many setae; sternite 1 setulose. Posterior margin of sternite 5 concave and with some setae ( Fig. 117 ).

Terminalia. Outer middle third of cercal plate slightly convex, the ventral surface with 2 spines; surstylus with some setae on apical third; basiphallus long ( Figs 118–120 ); aedeagus bare; gonopod with 2 long and strong setae on basal half; paramere with some small setulae apically and on middle third ( Fig. 121 ).

Female. Body length: 9.0 mm; wing length: 8.0 mm.

Similar to male, differing as follows: fronto-orbital plate with silver pruinosity; mesonotum with one silverdusted central vitta along presutural acrostichals, grey along anterior half of postsutural acrostichals, and silver dusted on posterior half between acrostichals and dorsocentrals; pleura silver pruinose; postalar callus silver pruinose; scutellum with silver vittae in the middle; abdomen with a shifting tessellated pattern; eyes separated at level of anterior ocellus by about 0.39 of head width; fronto-orbital plate with 5 proclinate setae, the lowermost one stronger, and 1 reclinate seta; about 19 weak frontal setae in 2–3 rows. Fore tibia without the 6 long posteroventral setae on apical half; fore tarsus without a golden ctenidium and without a few long setulae; mid femur without a tubercle but with a discrete elevation at apex of anterodorsal to posterodorsal surfaces bearing about 6 setae, the posterodorsal ones longer; mid tibia not narrowed at base, without a ctenidium, but with an anterodorsal row of short setae on basal two-thirds; hind tibia not curved, with 5 short and subequal anteroventral setae on apical twothirds, an anterodorsal row of short setae, without a posterodorsal row of weak setae, and without 3 posteroventral setulae on middle third; hind tarsus without modifications in shape or bristling.

Ovipositor. Tergite 6 shaped as 2 golf-club-like rods, posteriorly with 4 plates with setae; tergite 7 shaped as 2 golf-club-like rods, posteriorly with setae; tergite 8 as 2 rods, posteriorly with 2 plates with spines; sternite 6 as 1 rod, posteriorly with 2 plates with setae; sternite 7 as 1 rod, posteriorly with 1 plate with spines; sternite 8 as 2 rods, posteriorly with 2 small plates with spines; epiproct round and small, with 4 spines; hypoproct with many setae; cercus cylindrical and long ( Figs 122–123 ).

Material examined. AUSTRIA: Tyrol, Obergurgl, Brenner , pine forest, 2060 m, 25.vii.1972 , A.C. Pont & B. Pont, 1 Ƌ ( BMNH) ; Tyrol, St. Anton , 23.vii.1971 , A.E. Stubbs, 1 Ƌ ( BMNH) ; Tyrol, Mayrhofen, Floitental, Weg Bockach – Baumgart , 1460–1600 m, 7.vii.1969 , A.C.Pont & B. Pont, 1 ♀ ( BMNH) ; Carinthia, Saualpe Mts, P.C.

Zeller, 2 Ƌ syntypes of Cyrtoneura podagrica Loew (ZMHB & MCZ); Lower Austria, Wiener Schneeberg , vii.1855, H. Loew, 3 ƋƋ, 2 ♀♀ ( ZMHB) and 1 ♀ ( MCZ), all syntypes of Cyrtoneura podagric a Loew ; SWITZERLAND, Graubünden, Alp Lared, 1 ♀ syntype of Cyrtoneura podagrica Loew ( ZMHB) .

Distribution. PALAEARCTIC: in uplands and mountains, from Fennoscandia south to Spain, east to China and the Russian Far East. NEARCTIC: Alaska to Manitoba, Ontario, Quebec, south to British Columbia, Montana and New York.

Figures

FIGURES 117 – 123. Morellia (M.) podagrica (Loew). 117. Sternite 5. 118. Cercal plate and surstyli. 119. Cercal plate, ventral view. 120. Left surstylus. 121. Phallic complex, lateral view. 122. Ovipositor, dorsal view. 123. Ovipositor and spermathecae, ventral view.