Taenionema
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publication ID |
https://doi.org/ 10.5281/zenodo.4759332 |
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DOI |
https://doi.org/10.5281/zenodo.4766159 |
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persistent identifier |
https://treatment.plazi.org/id/AA15BF28-FFDD-CE40-FCD2-299F43A1FE3F |
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treatment provided by |
Felipe |
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scientific name |
Taenionema |
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Provisional Key to Late Instar Taenionema
Larvae
This key is tentative, since (1) only single or few populations, and in some instances only small numbers, of larvae were correlated for study, and they display few distinctive external features with untested possible variation, and (2) a combination of characters of male and female 9 th sterna, the few diagnostic features of some species, and distribution is required for arriving at an identification. The combination of shapes of male-female 9 th sterna, that appear to be diagnostic for species, are difficult to express verbally, and are best recognized by comparing specimens with the figures of males (87-99) and females (100-112).
1 Distribution east of the 90 th Meridian; male 9 th sternum ovate, with rounded apex ( Fig. 87 View Figs ) and female 9 th sternum narrower ( Fig. 100 View Figs )… ………………………………………..… atlanticum View in CoL
1’ Distribution west of the 100 th Meridian; male and female 9 th sterna variable ………………………... 2
2 Male wingpads brachypterous ( Fig. 33 View Figs ), female wingpads macropterous ( Fig. 34 View Figs ); male and female 9 th sterna both narrowly triangulate posteriorly ( Figs. 99 View Figs , 112 View Figs ) …………………… uinta View in CoL
2’ Male and female wingpads macropterous …… 3
3 Male and female 9 th sterna both narrowly triangulate posteriorly ( Figs. 88, 92 View Figs ; 101, 105 View Figs ) … 4
3’ Male 9 th sternum ( Figs. 89-91, 93-98 View Figs ) wider in posterior half than female ( Figs. 102-104, 106-111 View Figs ) ………………………………………………………. 5
4 Distribution: California ……………... californicum View in CoL
4’ Distribution: Oregon and Washington ….. jewetti View in CoL
5 Galea with a dense patch of curved, comb-like teeth covering apical, outer surface ( Fig. 26 View Figs ); male 9 th sternum ovate ( Fig. 89 View Figs ); female 9 th sternum distinctly subtriangulate in posterior half, with posterolateral sides concave ( Fig. 102 View Figs ); distribution California …………………… grinelli
5’ Galea with less prominent comb-like teeth ( Figs. 25, 27-32 View Figs ); male 9 th sternum variable in shape; posterolateral sides of female 9 th sternum straight or convex; distribution variable ………………... 6
6 Distribution Idaho and western Oregon; male 9 th sternum broadly rounded, nearly truncate, apically ( Fig. 98 View Figs ); female 9 th sternum narrowly triangulate posteriorly ( Fig. 111 View Figs ) ………. umatilla View in CoL
6’ Distribution variable …………………………… 7
7 Rare, small species, presently known only from few localities in Arizona and New Mexico; male 9 th sternum broadly rounded in apical half ( Fig. 90 View Figs ); female 9 th sternum narrowly triangulate in apical half ( Fig. 103 View Figs ); body length of both sexes 6- 7 mm …………………………………….….. jacobii View in CoL
7’ Distribution variable; body length of both sexes greater than 7mm ………………………………… 8
8 Distribution Pacific Northwest (Oregon, Washington); male 9 th sternum broadly triangulate in posterior half and apically pointed; female 9 th sternum narrowly triangulate in posterior half ( Fig. 107 View Figs ) ………………. oregonense View in CoL
8’ Distribution California or widespread ………… 9
9 Distribution California ………………………… 10
9’ Distribution widespread ………………………. 11
10 Male 9 th sternum ovate, with broadly rounded apex ( Figs. 1C View Fig , 91 View Figs ); female 9 th sternum broadly triangulate in apical half, with narrowly rounded apex (Fig. l04) ………………………………. jeanae View in CoL
10’ Male 9 th sternum broadly triangulate in apical half ( Fig. 97 View Figs ); female 9 th sternum narrowly triangulate in apical half ( Fig. 110 View Figs ) ………………… raynorium View in CoL
11 Male 9 th sternum ovate, with posterolateral sides angulate ( Fig. 93 View Figs ); female 9 th sternum narrowly triangulate in posterior half ( Fig. 106 View Figs ); distribution California, Pacific Northwest northward to Alaska and Yukon ………... kincaidi View in CoL
11’ Posterolateral sides of male 9 th sternum not angulate ( Figs. 95, 96 View Figs ); widespread western North America …………………………………………. 12
12 Male 9 th sternum ovate, with narrowly rounded apex ( Fig. 95 View Figs ); female 9 th sternum narrowly angulate, with posterolateral sides nearly straight, and a pointed apex ( Fig. 108 View Figs ) …………. pacificum View in CoL
12’ Male 9 th sternum with broadly rounded apex ( Fig. 96 View Figs ); female 9 th sternum ovate, with posterolateral sides convex, and a narrowly rounded apex ( Fig. 109 View Figs ) ………………………………………... pallidum View in CoL
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