Leuctra duplicata Claassen, 1923

Grubbs, Scott A. & Wei, Summer, 2017, Morphological Systematics Of Leuctra Duplicata Claassen, 1923 Species Group (Plecoptera: Leuctridae), Illiesia 13 (5), pp. 59-69: 61-63

publication ID

http://doi.org/10.5281/zenodo.4761111

publication LSID

lsid:zoobank.org:pub:9669ECAD-2449-477B-B190-828DB33F49E

DOI

http://doi.org/10.5281/zenodo.4763425

persistent identifier

http://treatment.plazi.org/id/1F042B4C-6109-FF9A-FC23-FE91FDBEFA5C

treatment provided by

Felipe

scientific name

Leuctra duplicata Claassen, 1923
status

 

Leuctra duplicata Claassen, 1923  

Atlantic Needlefly

http://lsid.speciesfile.org/urn:lsid: Plecoptera   .speciesfile.org: TaxonName:460988

( Figs. 1–26 View Figs View Figs View Figs View Figs View Figs , 33 View Fig )

Leuctra duplicata Claassen 1923:260   .

Holotype ♂ (CUIC), Labrador Lake (Cortland or Onondaga Co.), New York  

Leuctra duplicata Needham & Claassen, 1925:227   .

Leuctra duplicata Illies, 1966:88   .

Leuctra duplicata Zwick, 1973:399   .

Leuctra duplicata Hitchcock, 1974:75   .

Male. The dorsal abdominal process of the 8 th abdominal tergum emanates anteriorly, extending ca. ½ length of the segment and terminates on the posterior margin as a raised, bilobed process with small, distally rounded or subtriangular lobes ( Figs. 13–15 View Figs ). The dorsal abdominal process of the 7 th abdominal tergum is nearer the anterior margin of the segment and raised as a bar with smaller, distally rounded lobes ( Figs. 13–15 View Figs ). The paired dorsal processes exhibit variation, namely in the distance between lobes and “scaly” nature of the lobes that can be seen only with SEM ( Figs. 13–15 View Figs ). The specilla are broadest medially in lateral view due to an expanded keel, noticeably thickened in dorsal ½, and taper very little distally ( Figs. 1–6 View Figs ); the outer margin has low, tooth-like tubercles present along the outer distal ⅓ ( Figs. 7–12 View Figs ); in caudal view the basal ⅓ is concave ( Figs. 7–9, 11 View Figs ). The subanal lobes are widest basally, narrow and tapering slightly along entire length, slightly recurved anteriorly in distal ½, and extend nearly to the distal tip of the specilla ( Figs. 1–6 View Figs ). The vesicle base is short, body expanded medially and ovoid in shape, and entire surface covered in long, socketed bristles ( Fig. 16 View Figs ).

Female. The 8 th abdominal sternum bears a prominent, broadly-rounded medial tubercle on the anterior ½ that occupies the medial ca. ½ of the segment ( Figs. 17–26 View Figs View Figs ). The subgenital plate terminates in large, broadly rounded or subtriangular lobes separated by a v-shaped notch ( Figs. 17–26 View Figs View Figs ).

Distribution. Canada: NB, NS, ON, PE, PQ. USA: CT, MD, ME, NJ, NY, OH, PA, VA, WV ( DeWalt et al. 2017), MA (Needham & Claassen 1925, p. 228), NC, RI, VT (new state records).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Leuctridae

Genus

Leuctra

Loc

Leuctra duplicata Claassen, 1923

Grubbs, Scott A. & Wei, Summer 2017
2017
Loc

Leuctra duplicata

Hitchcock, S. W. 1974: 75
1974
Loc

Leuctra duplicata

Zwick, P. 1973: 399
1973
Loc

Leuctra duplicata

Illies, J. 1966: 88
1966
Loc

Leuctra duplicata

Needham & Claassen 1925: 227
1925
Loc

Leuctra duplicata

Claassen, P. W. 1923: 260
1923