Macrostomus, Wiedemann, 1817
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publication ID |
https://doi.org/ 10.11646/zootaxa.4981.3.5 |
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publication LSID |
lsid:zoobank.org:pub:3F94E1C8-2F49-4B85-86E3-48341F17A358 |
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DOI |
https://doi.org/10.5281/zenodo.5047209 |
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persistent identifier |
https://treatment.plazi.org/id/03F5878C-FFD6-FFE9-75D1-A9DBC3F1AEE6 |
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treatment provided by |
Plazi |
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scientific name |
Macrostomus |
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Key to the species of Macrostomus View in CoL View at ENA in Peru
1 Thorax yellow on mesopleuron, sometimes darker on scutum, scutellum and mediotergite or scutum with black mid-longitudinal stripes........................................................................................... 2
- Thorax mainly black, sometimes with prosternum, postpronotal and postalar lobes partially yellow.................... 8
2 Wing distinctly with brown to black infuscation at level of crossveins r-m and dm-m ( Fig. 5A View FIGURE 5 ). Female with pinnate setae dorsally and ventrally on mid femur ( Fig. 5E View FIGURE 5 ) and a few short pinnate setae on basal fourth of mid tibia ventrally and hind femur and tibia with pinnate setae dorsally and ventrally ( Fig. 5F View FIGURE 5 ) ( Bolivia, Peru)...................... M. pictipennis (Bezzi) View in CoL
- Wing without dark infuscation at level of crossveins r-m and dm-m ( Figs 3A, B View FIGURE 3 , 10A View FIGURE 10 ). Female with pinnate setae restricted to hind tibia or absent................................................................................... 3
3 Thorax with one mid-longitudinal black dorsal stripe between dorsocentral setae ( Fig. 13B View FIGURE 13 ).......................... 4
- Thorax without mid-longitudinal black dorsal stripe......................................................... 5
4 Thorax with wide mid-longitudinal stripe, as wide as area between dorsocentral setae ( Fig. 13B View FIGURE 13 ). Male: hind tibia with tuft of some 15 slender and longer dorsal setae ( Fig. 13A View FIGURE 13 ). Tergite 8 ( Fig. 13D View FIGURE 13 ) in dorsal view with elongate projection notched medially. Female: Genital fork wide with U-shaped mid-distal cleft ( Fig. 14D View FIGURE 14 ). Genital chamber membranous with two small sclerites ( Fig. 14D View FIGURE 14 ) ( Peru)............................................................ M. unilineatus View in CoL sp. nov.
- Thorax with narrow mid-longitudinal stripe, narrower than area between dorsocentral setae ( Fig. 12B View FIGURE 12 ). Male: hind tibia with four dorsal setae ( Fig. 12A View FIGURE 12 ). Tergite 8 ( Fig. 12D View FIGURE 12 ) with bifid distal projection. Hypandrium ( Fig. 12M View FIGURE 12 ) with a few posterior setae basally and distinct process medially. Female: Genital fork ( Fig. 12Q View FIGURE 12 ) with indistinct V-shaped cleft distally. Genital chamber membranous ( Fig. 12Q View FIGURE 12 ) ( Ecuador, Peru) ... M. lineatus Rafael & Cumming View in CoL
5 Female hind tarsus at least with tarsomere 1 whitish to silvery ( Fig. 2 View FIGURE 2 ). Wing ( Fig. 2 View FIGURE 2 ) distinctly brown infuscated. Male unknown ( Bolivia and Peru)............................................................ M. argyrotarsis (Bezzi) View in CoL
- Hind tarsus entirely brown to black. Wing normally without brown infuscation.................................... 6
6 Two pairs of ocellar setae. Male hind femur not crooked, with slightly short stouter setae not concentrated medially ( Fig. 10A View FIGURE 10 ). Female: hind tibia with short dorsal pinnate setae; sternite 8 ( Fig. 10G View FIGURE 10 ) with subapical paired sclerotized protuberance, medially with longitudinal, somewhat membranous line, laterally less sclerotized. Genital fork ( Figs 10F, G View FIGURE 10 ) Y-shaped ( Brazil, Ecuador, Peru)................................................................... M. ciliaticosta Rafael & Cumming View in CoL
- One pair of ocellar setae. Male hind femur distinctly crooked (sinuose) ( Figs 3A, C View FIGURE 3 ) or clavate ( Figs 8A, B View FIGURE 8 ). Female unknown............................................................................................. 7
7 Thorax entirely shiny yellow ( Figs 3A, B View FIGURE 3 ). Hind femur distinctly crooked (sinuose), with dorsal and ventral setae at curved area denser ( Figs 3A, C View FIGURE 3 ). Mid femur slightly clavate, mainly in dorsal view, with short posteroventral row of spines at distal third ( Peru)............................................................................. M. contortus View in CoL sp. nov.
- Thorax yellow laterally, shiny brown to black on pronotum, mesonotum and scutellum ( Fig. 8A View FIGURE 8 ). Hind femur clavate, without dorsal and ventral setae as above ( Fig. 8B View FIGURE 8 ). Mid and hind femora and tibiae slightly curved ( Fig. 8B View FIGURE 8 ) ( Peru)............................................................................................... M. chelicercus View in CoL sp. nov.
8 Two pairs of ocellar setae.............................................................................. 9
- One pair of ocellar setae.............................................................................. 10
9 Tergite 8 humped with microspinulose lateral expansion ( Figs 6B, C View FIGURE 6 ); posterior cercus enlarged distally ( Figs 6E, F View FIGURE 6 ); cell dm slightly projected posteriorly ( Fig. 6A View FIGURE 6 ). Hypandrium ( Fig. 6J View FIGURE 6 ) somewhat same diameter along entire length, with posterior setae. Female sternite 8 narrow and split at basal fourth ( Figs 6L, M View FIGURE 6 ). Genital chamber well sclerotized ( Fig. 6M View FIGURE 6 ) ( Bolivia, Brazil, Ecuador, Peru)..................................................................... M. limbipennis (Bezzi) View in CoL
- Tergite 8 ( Figs 7A–B View FIGURE 7 ) not humped, without microspinulose lateral expansion. Posterior cercus same diameter along entire length ( Fig. 7C View FIGURE 7 ); cell dm truncate posteriorly; Hypandrium ( Fig. 7D View FIGURE 7 ) somewhat thin, slightly wider distally, without posterior setae. Female sternite 8 ( Figs 7E, F View FIGURE 7 ) wide and complete. Genital chamber membranous ( Ecuador, Peru)............................................................................................. M. penai Rafael & Cumming View in CoL
10 Wing ( Fig. 11A View FIGURE 11 ) entirely hyaline; distal section of vein M 4 3X longer than vein dm-m; cell dm short. Abdomen with blue reflection at certain angles ( Fig. 11B View FIGURE 11 ). Tergite 8 ( Figs 11C, D View FIGURE 11 ) with short, rounded distal projection, hat-shaped in lateral view ( Fig. 11C View FIGURE 11 ). Female unknown ( Peru)......................................................... M. hyalopteryx sp. nov.
- Wing brown infuscate on apex, notably on pterostigma ( Figs 1C View FIGURE 1 , 4B, I View FIGURE 4 ); distal section of vein M 4 2X longer than vein dm-m. Cell dm elongate. Abdomen without blue reflection at certain angles. Tergite 8 ( Fig. 4C View FIGURE 4 , know only for M. melanothorax View in CoL ) with thin acute distal projection............................................................................. 11
11 Male: tergite 8 ( Fig. 4C View FIGURE 4 ) with thin acute distal projection. Female : sternite 8 higher laterally on posterior third, ventrally with two less sclerotized spots at distal quarter ( Figs 4J, K View FIGURE 4 ); genital fork ( Fig. 4L View FIGURE 4 ) small, somewhat T-shaped ( Brazil, Peru)........................................................................... M. melanothorax Rafael & Cumming View in CoL
- Male unknown. Female terminalia undescribed (probably as above) ( Peru)........................ M. apicalis (Bezzi) View in CoL
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.