Sciasmomyia

Shi, Li, Gaimari, Stephen D. & Yang, Ding, 2013, Revision of Sciasmomyia Hendel (Diptera: Lauxaniidae), with eight new species, Zootaxa 3691 (4), pp. 401-435 : 403-404

publication ID

https://doi.org/ 10.11646/zootaxa.3691.4.1

publication LSID

lsid:zoobank.org:pub:ED41FE28-0EF2-41DA-BC04-BE9F4F0F44AE

DOI

https://doi.org/10.5281/zenodo.6159824

persistent identifier

https://treatment.plazi.org/id/F951879A-0660-2962-FF44-EEC7DE8AFBAA

treatment provided by

Plazi

scientific name

Sciasmomyia
status

 

Key to the species of Sciasmomyia View in CoL

1. Wing ( Fig. 83 View FIGURES 83 – 87 ) pale yellow hyaline with small black spots at tips of longitudinal veins Sc, R2+3, R4+5 and M1, and on crossveins r-m and dm-cu; abdomen ( Figs 86, 87 View FIGURES 83 – 87 ) brown with yellowish or grayish pruinosity (color variable in different specimens), tergites 2–6 with a pair of large yellowish or grayish lateral spots and a stripe-like middle spot; phallus curved knife-like apically in lateral view; female hypogynial valve papillary apically with sparse setulae in ventral view (see Lee & Han, 2009: fig. 2).................................................................................. S. supraorientalis (Papp)

- Wing ( Figs 15 View FIGURES 12 – 16 , 71 View FIGURES 71 – 75 ) mostly pale brown with various patterns of hyaline spots; abdominal pattern, phallus and female hypogynial valve not as above................................................................................. 2

2. Wing ( Fig. 71 View FIGURES 71 – 75 ) mostly hyaline with irregular brown spots on basal 5/6 of upper half, and brown with hyaline spots on lower half and in distal 1/6; abdomen ( Figs 74, 75 View FIGURES 71 – 75 ) yellow, tergites 2–6 (and 7 in female) with wide black or dark gray central area; phallus with two pairs of subuliform processes in ventral view ( Fig. 78 View FIGURES 76 – 82 ); female hypogynial valve broad, apically forming three round processes with sparse short setae, with dense tiny setulae and microscopic teeth in ventral view ( Fig. 81 View FIGURES 76 – 82 )......................................................................................... S. quadricuspis View in CoL sp. nov.

- Wing ( Fig. 15 View FIGURES 12 – 16 ) evenly brown with many irregular hyaline spots; abdominal pattern, phallus and female hypogynial valve not as above.............................................................................................. 3

3. Palpus yellow on apical 1/3–1/2; wing ( Fig. 4 View FIGURES 1 – 4 ) with small hyaline spot between each longitudinal hyaline spot along R2+3, and ultimate section of M1 with a rectangular hyaline spot constricted at middle and a C-shaped hyaline apical spot; abdomen entirely yellow without brown spots or posterior margin; phallus with a pair of small triangular subapical processes curled outwards and a pair of decussate apical processes in ventral view ( Fig. 7 View FIGURES 5 – 11 ); female hypogynial valve trapezoidal with dense setulae in ventral view ( Fig. 10 View FIGURES 5 – 11 )................................................................ S. decussata View in CoL sp. nov.

- Palpus entirely brown or only yellow on basal 1/3; wing pattern, abdomen pattern, phallus and female hypogynial valve not as above.............................................................................................. 4

4. Anepisternum entirely grayish black ( Fig. 50 View FIGURES 50 – 53 ); scutellum yellow except for dark brown stripes laterally; wing along R2+3 with paired small hyaline spots (one above and one below vein) between longitudinal spots along costal margin; epandrium with an apical incision in lateral view and a process projecting backward in posterior view ( Fig. 55 View FIGURES 54 – 57 ); phallus consisting of a pair of small blunt basal processes, a U-shaped sclerite with a pair of acuate processes on upper margin, a pair of acuate dorsal processes and a deep incision at tip of membranous part in ventral view ( Fig. 56 View FIGURES 54 – 57 )............................ S. lui sp. nov.

- Anepisternum yellow to brownish yellow (sometimes partially grayish brown), but never entirely grayish black; scutellum variable, but never predominantly yellow through middle; wing lacking paired hyaline spots along R2+3; male genitalia not as above............................................................................................... 5

5. Face with pair of brown V or Y-shaped lateral stripes ( Figs 13 View FIGURES 12 – 16 , 38 View FIGURES 36 – 42 , 59 View FIGURES 58 – 63 ); wing with hyaline spot in cell r4+5 above dorsal tip of crossvein dm-cu ( Figs 15 View FIGURES 12 – 16 , 40 View FIGURES 36 – 42 , 62 View FIGURES 58 – 63 )....................................................................... 7

- Face with pair of brown oblique lateral stripes ( Figs 28 View FIGURES 27 – 30 , 102 View FIGURES 101 – 105 ); wing with hyaline spots on M1 proximal and on basal crossvein dm-cu, but cell r4+5 brown between these spots ( Figs 30 View FIGURES 27 – 30 , 105 View FIGURES 101 – 105 ).................................................. 6

6. Femora black except yellow at apex; anepisternum yellow with a brown oblique I-shaped spot and katepisternum entirely blackish brown with grayish pruinosity ( Fig. 101 View FIGURES 101 – 105 ); abdominal tergites unicolorous black ( Fig. 104 View FIGURES 101 – 105 ); phallus tubular, broad apically with a pair of slender median subuliform sclerites and a pair of hooked dorsal processes in ventral view ( Fig. 108 View FIGURES 106 – 111 )............................................................................................ S. tubata View in CoL sp. nov

- Femora yellow, with some brown subapically; anepisternum with three brown spots respectively lying on anterodorsal corner, posterodorsal corner and posteroventral corner, and a brown median spot; katepisternum with brown spot on anterodorsal corner and an oblique blackish brown stripe along dorsal margin ( Fig. 27 View FIGURES 27 – 30 ); abdominal tergites with black posterior margin; phallus long columnar and J-shaped curved, round apically with a small dorsal incision and a pair of black long curved knife-like lateral processes in lateral view ( Fig. 35 View FIGURES 31 – 35 ).................................................. S. longicurvata View in CoL sp. nov.

7. Male with thick hypandrial arms much shorter than anteriorly thickened hypandrial apodeme ( Fig. 45 View FIGURES 43 – 49 ); female hypogynial valve with dense ventral setulae throughout ( Fig. 48 View FIGURES 43 – 49 )........................................ S. longissima View in CoL sp. nov.

- Male with narrow hypandrial arms as long or longer than narrow hypandrial apodeme ( Figs 19 View FIGURES 17 – 23 , 69 View FIGURES 64 – 70 ); female hypogynial valve with dense ventral setulae except for entirely bare apex...................................................... 8

8. Male with surstylus deeply emarginate subapically, with bare medially-directed lobe below ( Fig. 95 View FIGURES 94 – 100 ); epandrium in lateral view 2 times thicker dorsally than apically ( Fig. 94 View FIGURES 94 – 100 ); hypandrial arms in dorsal view thicker than hypandrial apodeme ( Fig. 97 View FIGURES 94 – 100 ); female hypogynial valve ( Figs 99, 100 View FIGURES 94 – 100 ) with distinct basolateral wing-like processes; tip distinctly constricted into narrow, bare process ( Fig. 100 View FIGURES 94 – 100 )..................................................................... S. thaii sp. nov.

- Male with surstylus rounded apically, lacking a lobe below ( Figs 18 View FIGURES 17 – 23 , 65 View FIGURES 64 – 70 ); epandrium in lateral view dorsally subequal to ( Fig. 64 View FIGURES 64 – 70 ) or slightly thicker than apically ( Fig. 17 View FIGURES 17 – 23 ); hypandrial apodeme thicker than hypandrial arms ( Figs 19 View FIGURES 17 – 23 , 66 View FIGURES 64 – 70 ); female hypogynial valve lacking basolateral wing-like processes; tip either constricted to broad bare apex ( Fig. 22 View FIGURES 17 – 23 ) or tapering to bare apex ( Fig. 69 View FIGURES 64 – 70 )........................................................................................... 9

9. Male with syntergosternite 7+8 present as a short, narrow sclerite, with the spiracle embedded ( Fig. 17 View FIGURES 17 – 23 ); epandrium in lateral view thicker dorsally than apically, tapering to rounded apex with small anterior process subapically ( Fig. 17 View FIGURES 17 – 23 ); surstylus blackish; hypandrial arms subequal in length to hypandrial apodeme ( Fig. 19 View FIGURES 17 – 23 ); phallus weakly sclerotized, lacking strong lateral processes ( Figs. 19, 20 View FIGURES 17 – 23 ); female hypogynial valve with subapical constriction distinguishing subcircular apical knob, entirely bare and narrower than part basal to constriction ( Fig. 22 View FIGURES 17 – 23 )....................................... S. leishanensis View in CoL sp. nov.

- Male with syntergosternite 7+8 degenerate, with the spiracle embedded in membrane ( Fig. 64 View FIGURES 64 – 70 ); epandrium in lateral view narrow throughout, and distinctly spatulate apically ( Fig. 64 View FIGURES 64 – 70 ); surstylus yellow; hypandrial arms long, much longer than hypandrial apodeme ( Fig. 66 View FIGURES 64 – 70 ); phallus strongly sclerotized, with four pairs of strong lateral processes ( Figs 66, 67 View FIGURES 64 – 70 ); female hypogynial valve with subapical constriction distinguishing subtriangular apical knob, bare only in distal half and subequal in width to part basal to constriction ( Fig. 69 View FIGURES 64 – 70 )................................................... S. meijerei Hendel View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Lauxaniidae

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