Pseudoaerumnosa

Vilkamaa, Pekka, Halenius, Pentti & Ševčík, Jan, 2019, Review of Pseudoaerumnosa Rudzinski (Diptera, Sciaridae), with the description of twenty-four new species, Zootaxa 4656 (1), pp. 1-42: 5-6

publication ID

https://doi.org/10.11646/zootaxa.4656.1.1

publication LSID

lsid:zoobank.org:pub:1C0F29BB-0E02-48E4-810F-036F4F2730C7

persistent identifier

http://treatment.plazi.org/id/03F387CA-EF2F-DC4A-FF1C-CE2BACD8B5E4

treatment provided by

Plazi

scientific name

Pseudoaerumnosa
status

 

Key to the species of Pseudoaerumnosa  (males)

Note. The species of Pseudoaerumnosa  are mostly difficult to identify. The size, number and arrangement of the gonostylar megasetae, important for identification of species in many genera of Sciaridae  , are often almost identical. Minor differences in the relative length and width of the gonocoxa and gonostylus and in the form of the tegmen, appear important. Care must be taken that the tegmen does not change its form during the preparation which occurs easily if specimens are treated with KOH or if DNA extraction methods are used. Furthermore, the size and form of the apical tooth of the gonostylus may vary depending on the position of the tooth in preparations.

1 Tegmen with finger-like apical process.................................................................... 2

- Tegmen without finger-like process....................................................................... 4

2 Gonostylar megasetae with robust basal bodies, finger-like apical process of tegmen narrow, club-like...................................................................................................... P. clavidactyla  sp. n.

- Gonostylar megasetae without basal bodies, finger-like apical process of tegmen nearly evenly broad................... 3

3 Tegmen angulate laterally, finger-like process arises from apical margin of tegmen..................... P. eminula  sp. n.

- Tegmen smoothly curved laterally, apical process of tegmen arises from dorsal side of tegmen......... P. cryptoloba  sp. n.

4 Gonostylus with 1 or 2 megasetae subapically on basal side of apical tooth, and with distinct medial lobe, bearing 2–5 megasetae................................................................................................ 5

- Gonostylus without medial lobe or with indistinct one, megasetae scattered on medial side of gonostylus............... 21

5 Gonostylus with 1 megaseta subapically................................................................... 6

- Gonostylus with 2 megasetae subapically.................................................................. 8

6 Tegmen roundish laterally, hind margin of wing with only dorsal setae............................. P. tenuidens  sp. n.

- Tegmen nearly straight or abruptly curved laterally, hind margin of wing with dorsal and ventral setae.................. 7

7 Tegmen nearly straight laterally, gonostylar lobe broad............................................ P. fragilis  sp. n.

- Tegmen abruptly curved at middle, gonostylar lobe narrow....................................... P. curvifalx  sp. n.

8 Tegmen broadest at about its middle...................................................................... 9

- Tegmen broadest basally.............................................................................. 10

9 Tegmen strongly narrowed towards apex and roundish apically, gonostylus wide, its tooth only slightly curved.................................................................................................. P. ampliata  sp. n.

- Tegmen slightly narrowed towards apex and nearly truncate apically, gonostylus more slender, its tooth distinctly curved.......................................................................................... P. impensa  sp. n.

10 Tegmen longer than broad.................................................................... P. tkoci  sp. n.

- Tegmen as long as or shorter than broad.................................................................. 11

11 Gonostylar lobe with 2 megasetae, megasetae robust and with distinct basal bodies................... P. awanensis  sp. n.

- Gonostylar lobe with at least 3 megasetae, megasetae slender and without distinct basal bodies....................... 12

12 Large species, wing length 2.6–3.5 mm, gonostylus tumid.................................... P. inviolata Rudzinski 

- Smaller species, wing length 1.4–2.5 mm, gonostylus slender................................................. 13

13 Tegmen nearly straight apically......................................................................... 14

- Tegmen roundish apically.............................................................................. 15

14 Tegmen broader than long, narrowed towards apex, sclerotized basolaterally, gonostylar lobe distinct........ P. annae  sp. n.

- Tegmen subquadrangular, weakly sclerotized, gonostylar lobe indistinct.......................... P. quadriquetra  sp. n.

15 Tegmen with broad lateral sclerotizations................................................................. 16

- Tegmen without or with only narrow lateral sclerotizations................................................... 17

16 Tegmen sclerotized laterally nearly up to its apex, apical tooth of gonostylus short, with its basal part about ½ of the largest width of gonostylus...................................................................... P. clivicola  sp. n.

- Tegmen sclerotized laterally at its basal half only, apical tooth of gonostylus long, with its basal part about 2/3 of the largest width of gonostylus....................................................................... P. formosa  sp. n.

17 Tegmen much broader than long........................................................................ 18

- Tegmen at most slightly broader than long, as long as or longer than broad....................................... 19

18 Gonostylus nearly as long as gonocoxa, apical tooth of gonostylus nearly straight, hind margin of wing with dorsal and ventral setae................................................................................... P. exacuta  sp. n.

- Gonostylus shorter than gonocoxa, apical tooth of gonostylus curved, hind margin of wing with dorsal setae only................................................................................................ P. acinacea  sp. n.

19 Apical tooth of gonostylus constricted subbasally, short, with its basal part about1/4 of the largest width of gonostylus............................................................................................ P. collicola  sp. n.

- Apical tooth of gonostylus narrowed from base to apex, long, about ½ of the largest width of gonostylus............... 20

20 Apex of gonostylus strongly narrowed apically, wing vein R1 ending beyond level of base of M-fork...... P. junciseta  sp. n.

- Apex of gonostylus broader, wing vein R1 ending at about level of base of M-fork..................... P. obovata  sp. n.

21 Gonostylar megasetae of different lengths, tegmen subtriangular..................................... P. banari  sp. n.

- Gonostylar megasetae subequal, tegmen different........................................................... 22

22 Gonocoxa and gonostylus subequal in length.............................................................. 23

- Gonocoxa much longer than gonostylus.................................................................. 24

23 Gonostylus narrow, with long apical tooth..................................................... P. consuota  sp. n.

- Gonostylus broad, with short apical tooth..................................................... P. saginata  sp. n.

24 Tegmen hemispherical, gonostylus with long pointed setae subapically............................. P. filispicata  sp. n.

- Tegmen subquadrangular, gonostylus without pointed long setae subapically..................................... 25

25 Gonostylus slender, with 4 megasetae and robust apical tooth, tegmen much broader than long........ P. quadriquetra  sp. n.

- Gonostylus more tumid, with 7–8 megasetae and slender apical tooth, tegmen slightly broader than long..................................................................................................... P. pilicaudata  sp. n.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Sciaridae