Anacroneuria

Stark, Bill P. & Baumann, Richard W., 2011, Records Of Anacroneuria (Plecoptera: Perlidae) From Bolivia And Paraguay With Descriptions Of Three New Species, Illiesia 7 (19), pp. 182-191 : 187

Anacroneuria PA-1

( Figs. 16-18 )

Material examined. PARAGUAY: Hernandarias , near Acaray River, 3 November 1956, C.J.D. Brown, 7♀ (BYUC) .

Adult habitus. General color pale brown, patterned with darker brown pigment. Head with a dark V connecting ocelli and extending toward bases of antennae ( Fig. 16 ); lappets and antennae dark brown, palpi pale. Pronotum pale brown with darker, slender rugosities scattered over disk; median suture with a narrow dark band on either side. Hind femora darker in apical third, hind tibia uniformly brown. Wings tinted pale brown, veins darker.

Male. Unknown.

Female. Forewing length 10-11 mm. Subgenital plate weakly four lobed; inner lobes separated by a shallow V-shaped notch ( Fig. 18 ) and outer lobes by a very shallow, wide notch. Sternum 9 posterior sclerite long, slender and sparsely setose; median sclerite covered basally and through median zone with fine, short setae, and bearing a few scattered longer, thicker setae near sclerite and laterally.

Egg. Spindle shaped, long, slender and darker on anterior pole ( Fig. 17 ).

Larva. Unknown.

Comments. We are unable to associate these females with any of the species known from the region. Certainly they are distinct from A. debilis and A. trimacula ( Froehlich 2002) and they are also distinct in egg morphology and subgenital plate shape from A. fuscicosta (Enderlein) and A. stanjewetti Froehlich , two regional species which have similar head patterns ( Zwick 1973; Froehlich 2002).

Figures

Figs. 16-24. Anacroneuria sp. unassociated females. 16-18. PA-1. 16. Head and pronotum. 17. Egg. 18. Female sterna 8-9. 19-21. PA-2. 19. Head and pronotum. 20. Egg. 21. Female sterna 8-9. 22-24. PA-3. 22. Head and pronotum. 23. Egg. 24. Female sterna 8-9.