Phytomia

Meyer, Marc De, Goergen, Georg & Jordaens, Kurt, 2020, Taxonomic revision of the Afrotropical Phytomia Guérin-Méneville (Diptera: Syrphidae), Zootaxa 4803 (2), pp. 201-250 : 207-208

publication ID

https://doi.org/ 10.11646/zootaxa.4803.2.1

publication LSID

lsid:zoobank.org:pub:0C0F5754-9530-4072-AF45-BDFE4A8A2B57

persistent identifier

https://treatment.plazi.org/id/03F94D2C-FFB1-FFF0-0EAD-35E2FA31FAAE

treatment provided by

Plazi

scientific name

Phytomia
status

 

Key to the Afrotropical species of Phytomia View in CoL View at ENA

1 Wing with distinct and well demarcated dark macula running from anterior margin, posteriorly through part of cell r 2+3 and covering cross-vein r-m, usually combined with dark marking along anterior part of wing to a variable extent ( Figs 37–41 View FIGURES 37–48 ). Thorax, pilosity on scutum and scutellum hardly visible ( Figs 1–4 View FIGURES 1–10 ) (bullata group)................................. 2

- Wing without distinct and well demarcated dark marking over cross-vein r-m, at most darker streak or coloration not connected to anterior wing margin; anterior part of wing either hyaline or darker coloured ( Figs 42–60 View FIGURES 37–48 View FIGURES 49–60 ). Thorax with distinct short or long pilosity on scutum and scutellum ( Figs 5–20 View FIGURES 1–10 View FIGURES 11–20 )............................................................... 5

2 Scutellum orange to rufous, paler than anterior medial part of scutum ( Fig. 3 View FIGURES 1–10 )............................. P. kroeberi View in CoL

- Scutum and scutellum concolorous, black ( Figs 1–2, 4 View FIGURES 1–10 )....................................................... 3

3 Male abdomen, terga 3 and 4 with pair of maculae of golden pilosity ( Fig. 62 View FIGURES 61–72 ). Female head, medial part of frons with fascia of golden pilosity ( Fig. 22 View FIGURES 21–28 )........................................................................ P. aurigera View in CoL

- Male abdomen, terga 3 and 4 without golden pilosity, with pale yellow pilosity only ( Figs 61, 63–66 View FIGURES 61–72 ). Female head, frons with short dispersed black pile dorsally, palish pile ventrally, without golden pilosity ( Figs 21, 23 View FIGURES 21–28 )......................... 4

4 Legs, femora red-brown, apical fifth black; hind femur with distinct apical protuberance ventrally ( Fig. 30 View FIGURES 29–36 ). Head, face largely yellow-brown ( Fig. 23 View FIGURES 21–28 )........................................................................... P. serena View in CoL

- Legs, femora uniformly black; hind femur without distinct apical protuberance, at most with weak swelling ( Fig. 29 View FIGURES 29–36 ). Head, face black ( Fig. 21 View FIGURES 21–28 )............................................................................. P. bullata View in CoL

5 Abdomen, second tergum with continuous yellow fascia occupying at least half of entire length, reaching anterior tergum margin, without medial dark macula ( Figs 72–74, 79 View FIGURES 61–72 View FIGURES 73–84 ). Wing with basal part, including cell bc and alula at least in basal part dark, remainder of wing hyaline ( Figs 50–52, 57 View FIGURES 49–60 )................................................................ 6

- Abdomen, second tergum either completely black, dark with pair of paler maculae anterolaterally, or with broad yellow fascia and medial dark macula ( Figs 67–71 View FIGURES 61–72 , 75–78, 80–84 View FIGURES 73–84 ). Wing colour variable, either completely hyaline ( Fig. 53, 56 View FIGURES 49–60 ) or darker in parts ( Figs 42–49, 54–55, 58–60 View FIGURES 37–48 View FIGURES 49–60 )......................................................................... 9

6 Thorax, scutum with concolorous orange-brown pilosity ( Fig. 17 View FIGURES 11–20 )........................................ P. varians View in CoL

- Thorax, scutum with yellow to yellow-grey pilosity and pollinosity on anterior third, strongly contrasting with black posterior part ( Figs 10–12 View FIGURES 1–10 View FIGURES 11–20 ); posterior margin yellow or darker pollinose. (natalensis group).................................. 7

7 Thorax, without distinct yellow fascia along posterior margin; at most paler brown pollinosity and pale pilosity ( Figs 10 View FIGURES 1–10 , 72 View FIGURES 61–72 ); if yellow pollinosity present then only medially and not extending along lateral margins dorsally of postalar callus................................................................................................... P. natalensis View in CoL

- Thorax, scutum with distinct yellow fascia along posterior margin consisting of extensive yellow pollinosity and yellow pilosity, strongly contrasting with black colour of scutellum and black part of scutum ( Figs 11–12 View FIGURES 11–20 , 73–74 View FIGURES 73–84 ); fascia continued along lateral margin dorsally of postalar callus and largely connected to anterior yellow scutal fascia........................ 8

8 Thorax, anepimeron pilosity uniformly pale yellow; scutum posterior fascia large, about half to one-third as long as black part ( Fig. 12 View FIGURES 11–20 ). Abdomen, third tergum with yellow anterior fascia continuous, not interrupted in medial part ( Fig. 74 View FIGURES 73–84 )................................................................................................. P. pallida View in CoL sp. nov.

- Thorax, anterior anepimeron in dorsal part at margin with dorsomedial anepimeron at least partially black pilose; scutum yellow posterior fascia small, at most one-fourth as long as black part ( Fig. 11 View FIGURES 11–20 ). Abdomen, third tergum usually with yellow anterior fascia interrupted ( Fig. 73 View FIGURES 73–84 ).................................................................. P. curta View in CoL

9 Abdomen, terga 2–4 without clear medial swelling (bulla) ( Figs 77–78, 80–84 View FIGURES 73–84 )................................... 10

- Abdomen, terga 2–4 with at least trace of medial swelling present ( Figs 67–71 View FIGURES 61–72 , 75 View FIGURES 73–84 )................................ 15 [ P. fucoides View in CoL ( Fig. 76 View FIGURES 73–84 ) keys out both ways]

10 Head, basoflagellomere bright orange ( Fig. 24 View FIGURES 21–28 ), frons orange ground colour, with orange pilosity ( Fig. 24 View FIGURES 21–28 ). Hind leg, femur and tibia black, tarsi orange ( Fig. 15 View FIGURES 11–20 ). Abdomen black, second tergum with pair of large anterolateral orange maculae ( Fig. 77 View FIGURES 73–84 )................................................................................................ P. fusca View in CoL

- Head, basoflagellomere black to brown-black ( Figs 14, 16, 18–20 View FIGURES 11–20 ), frons brown-black ground colour, with pale or dark pilosity but never orange. Hind leg, femur orange brown to dark brown; if black, then tarsi never bright orange. Abdomen colour and markings different ( Figs 76, 78, 80–84 View FIGURES 73–84 )................................................................... 11

11 Wing in basal half extensively microtrichose, more hyaline distally ( Fig. 54 View FIGURES 49–60 ). Thorax and scutellum with rufous to dark brown pollinosity ( Fig. 14 View FIGURES 11–20 ); anepimeron with distinct long black pile contrasting with paler pile on other pleural sclerites. Abdomen unicolorous dark brown ( Fig. 76 View FIGURES 73–84 )................................................................. P. fucoides View in CoL

- Wing either completely hyaline ( Fig. 56 View FIGURES 49–60 ), slightly darker coloured along wing venation ( Fig. 60 View FIGURES 49–60 ) or weak microtrichose in apical part of cells r 1, r 2+3 and r 4+5 ( Fig. 59 View FIGURES 49–60 ) Thorax and scutellum with predominantly pale pilosity, interspersed with few darker pile ( Figs 18–20 View FIGURES 11–20 ); anepimeron with long pale pile, of same colour as pile on other pleural sclerites.Abdomen either unicolorous ( Figs 82–83 View FIGURES 73–84 ) or with yellow-orange to orange-brown markings on at least the second tergum ( Figs 78, 80–81, 84 View FIGURES 73–84 )........ 12

12 Head, area between antennal insertion and facial tubercle weakly concave, and with poorly developed facial tubercle ( Fig. 27 View FIGURES 21–28 ). Male, eyes touching for distance equal to 2–3 times length of ocellar triangle; dorsal ommatidia distinctly larger (at least three times) than ventral ommatidia ( Fig. 25 View FIGURES 21–28 ). Male genitalia, surstyli club like with row of strong setulae along apex and large part of inner margin ( Fig. 98 View FIGURES 85–100 )......................................................................... P. incisa View in CoL

- Head, area between antennal insertion and facial tubercle strongly concave, and with well developed facial tubercle ( Fig. 28 View FIGURES 21–28 ). Male, eyes not touching or touching for distance only slightly longer than ocellar triangle; dorsal ommatidia of same size or slightly larger than ventral ommatidia ( Fig. 26 View FIGURES 21–28 ). Male genitalia, surstyli different ( Figs 99–100 View FIGURES 85–100 )...................... 13

13 Hind leg, femur swollen, in lateral view at least 1.5x as broad as tibia. Wing, apical part often with weak microtrichia coverage, in particular in cells r 1, r 2+3 and r 4+5. Male, eyes dichoptic. Female, head with rugose area at most as high as length of antenna, usually smaller and reduced to small smooth bare area just dorsal of antennal insertion; often partially covered by long pale pilosity.................................................................................. genus Simoides View in CoL

- Hind leg, femur slender, in lateral view about as broad as tibia. Wing either completely hyaline or with slightly darker coloration along wing venation (but not caused by microtrichia). Male, eyes holoptic, touching for short distance. Female, head with rugose area well developed, longer than length of antenna and distinctly rugose; bare.............................. 14

14 Head, frons dorsal of rugose area with long pile, equal to length of or longer than third antennal segment ( Fig. 18 View FIGURES 11–20 ); eyes in male touching for distance at most equal to length of ocellar triangle. Thorax, apical margin of scutellum with long pile equal in length to at least half the depth of the scutellum ( Fig. 35 View FIGURES 29–36 ).............................................. P. melas View in CoL

- Head, frons dorsal of rugose area with short pile, less than length of third antennal segment ( Fig. 19 View FIGURES 11–20 ); eyes in male touching for distance slightly to distinctly longer than length of ocellar triangle. Thorax, apical margin of scutellum with short pile, at most one-fourth of the depth of the scutellum ( Fig. 36 View FIGURES 29–36 )..................................................... P. poensis View in CoL

15 Thorax, anepimeron with distinct long black pile contrasting with paler pile on other pleural sclerites. Abdomen, bulla hardly discernible, present as small swelling at most; pollinosity uniform ( Fig. 76 View FIGURES 73–84 )............................... P. fucoides View in CoL

- Thorax, anepimeron with long pale pile, of same colour as pile on other pleural sclerites. Abdomen, medial bulla very distinct, at least on tergum 2; bulla weakly shining, less pollinose than remainder of tergum ( Figs 75 View FIGURES 73–84 , 67–71 View FIGURES 61–72 ).................. 16

16 Head, antenna with arista bare. Abdomen, second tergum predominantly yellow with black medial fascia ( Fig. 75 View FIGURES 73–84 ). Male genitalia, surstyli stub like, with distinct row of strong setulae along apical and inner margin ( Fig. 96 View FIGURES 85–100 )............... P. erratica View in CoL

- Head, antenna with arista pubescent in basal half, pile at least one-third the width of pedicel. Abdomen, second tergum largely brown to brown-black ground colour ( Figs 67–71 View FIGURES 61–72 ). Male genitalia, surstyli curved club like, setulae only present at apical part ( Figs 89–92 View FIGURES 85–100 ) (bulligera group).......................................................................... 17

17 Thorax, scutum and scutellum orange to rufous pilose ( Figs 5–6, 9 View FIGURES 1–10 )............................................ 18

- Thorax, scutum and scutellum greyish to pale yellowish pilose ( Fig. 7 View FIGURES 1–10 ).......................................... 21 ( P. memnon View in CoL sp. nov. ( Fig. 8 View FIGURES 1–10 ) keys out both ways)

18 Hind leg, tibia pale to golden yellow pilose dorsally ( Figs 31–32 View FIGURES 29–36 ); if partially black, then ventral calypter with fringe of pale pile............................................................................................... 19

- Hind leg, tibia partially (at least apical third) or completely black pilose dorsally ( Figs 33–34 View FIGURES 29–36 )....................... 20

19 Wing, ventral calypter with fringe of pale pile ( Fig. 42 View FIGURES 37–48 ); female wing with microtrichosity restricted to base, anterior margin and a weakly developed patch in the middle ( Fig. 42 View FIGURES 37–48 ). Abdomen, viewed from behind, second tergum along anterior margin with conspicuous long white pile, widened anterolaterally ( Fig. 67 View FIGURES 61–72 ).......................................... P. bulligera View in CoL

- Wing, ventral calypter with fringe of black pile ( Fig. 43 View FIGURES 37–48 ); female wing microtrichosity very extensive, covering most of wing surface except along posterior margin ( Fig. 44 View FIGURES 37–48 ).Abdomen, viewed from behind, second tergum without conspicuous long white pile, at most with dispersed short white pile anterolaterally ( Fig. 68 View FIGURES 61–72 )............................... P. austeni View in CoL sp. nov.

20 Hind leg, tibia with dorsal pilosity only partially black for at most one-third of entire length distally (as in Fig. 33 View FIGURES 29–36 ). Female, wing extensively microtrichose, covering most of wing surface except along posterior margin ( Fig. 49 View FIGURES 49–60 )....... P. pubipennis View in CoL

- Hind leg, tibia with dorsal pilosity largely black over entire length, at most one-fifth of basal part with silvery pile ( Fig. 34 View FIGURES 29–36 ). Female, wing only microtrichose at base, anterior margin and weakly developed patch in the middle ( Fig. 47 View FIGURES 37–48 )................................................................................................. P. memnon View in CoL sp. nov.

21 Legs, mid tibia pilosity partially black ( Fig. 8 View FIGURES 1–10 ); hind tibia, ventral black pile at least as long as width of tibia ( Fig. 34 View FIGURES 29–36 ).......................................................................................... P. memnon View in CoL sp. nov.

- Legs, mid tibia pilosity pale, without black pile ( Fig. 7 View FIGURES 1–10 ); hind tibia, ventral black pile shorter than width of tibia ( Fig. 33 View FIGURES 29–36 ).................................................................................................. P. bezzii View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF