Key to Nearctic Nylanderia Males

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to navigation Jump to search

This key to males is based on: Kallal, R.J. & LaPolla, J.S. 2012. Monograph of Nylanderia (Hymenoptera: Formicidae) of the World, Part II: Nylanderia in the Nearctic. Zootaxa 3508, 1-64.

You may also be interested in:

1

2

return to couplet #1

  • Parameres long and digitiform; digiti without extra structures or projections . . . . . Nylanderia bruesii
  • Parameres triangular with tapered apices; digiti with unique dorsal projections at approximately midlength . . . . . Nylanderia magnella

3

return to couplet #1

4

return to couplet #3

  • Overall dark brown in color; scapes with no more than 5 macrosetae (typically scapes with 1–2 macrosetae); digiti and cuspi-des relatively straight; cuspides nearly as long as digiti . . . . . Nylanderia arenivaga
Profile of Nylanderia arenivaga male
  • Overall light brown in color; scapes completely lacking macrosetae; digiti curved outward from aedeagal valves, cuspides curved inward toward aedeagal valves; cuspides shorter than digiti . . . . . Nylanderia phantasma
Profile of Nylanderia phantasma male

5

return to couplet #3

Profile of Nylanderia bourbonica male
  • Parameres triangular without a dorsal notch . . . . . 6

6

return to couplet #5

  • Scapes with 0–2 macrosetae; if with 2 macrosetae, then scape length less than 0.55 mm. . . . . . 7
  • Scapes with 2 or more macrosetae; if with 2 macrosetae, then scape length greater than 0.55 mm . . . . . 9

7

return to couplet #6

  • Scapes with 1–2 macrosetae; 9th sternite 0.15 mm wide or less . . . . . Nylanderia wojciki
Head of Nylanderia wojciki male
Profile of Nylanderia wojciki male
  • Scapes without macrosetae; 9th sternite greater that 0.15 mm wide . . . . . 8

8

return to couplet #7

  • Overall yellow in color; 9th sternite triangular, broadening proximally, with long ventral apodeme and short, thin lateral apo-demes . . . . . Nylanderia trageri
  • Overall dark brown in color; 9th sternite not triangular; lateral apodemes short and broad . . . . . Nylanderia parvula

9

return to couplet #6

  • Segment IV of antennae in line with remainder of funicular segments . . . . . 11

10

return to couplet #9

  • Parameres curving strongly inward; digiti and aedeagal valves not tapering then broadening into rounded tip; 9th sternite broadening proximally with large, digitiform medial apodeme . . . . . Nylanderia vividula
Head of Nylanderia vividula male
Profile of Nylanderia vividula male
  • Parameres not strongly curving inward; digiti and aedeagal valves tapering then broadening into rounded tips; 9th sternite with tapering, nearly digitiform medial apodeme . . . . . Nylanderia terricola

11

return to couplet #9

12

return to couplet #11

13

return to couplet #12

14

return to couplet #12

15

return to couplet #14

  • Mesocoxae and metacoxae always whitish, strongly contrasting with brown body . . . . . Nylanderia steinheili
Profile of Nylanderia steinheili male
  • Mesocoxae and metacoxae not whitish, not strongly contrasting with body . . . . . 16

16

return to couplet #16

  • 9th sternite spade-like, broadening proximally, with very short, broad lateral and ventral apodemes; scapes brown in color . . . . . Nylanderia concinna
Head of Nylanderia concinna male
Profile of Nylanderia concinna male
  • 9th sternite not spade-like or triangular; scapes yellowish in color . . . . . 17

17

return to couplet #16

  • Mesosoma entirely covered in a dense layer of pubescence . . . . . 18
  • Mesosoma with a dense layer of pubescence on dorsum; remainder of mesosoma without pubescence . . . . . 19

18

return to couplet #17

  • Paramere apices triangular and weakly sclerotized (yellow to slightly darker coloration); macrosetae originating from the paramere margin scattered and not fan-like . . . . . Nylanderia fulva
Head of Nylanderia fulva male
Profile of Nylanderia fulva male
  • Paramere apices rounded and well sclerotized (dark brown coloration); macrosetae originating from the paramere margin in a dense, fan-like configuration . . . . . Nylanderia pubens
Head of Nylanderia pubens male
Profile of Nylanderia pubens male

19

return to couplet #17