Figs. 20-23. Neoperla sabang egg. 20. Entire egg. 21. Chorionic detail. 22. Apical aspect, collar end. 23 in New Species Of Neoperla Needham And Phanoperla Banks (Plecoptera: Perlidae) From The Philippine Islands

Figs. 20-23. Neoperla sabang egg. 20. Entire egg. 21. Chorionic detail. 22. Apical aspect, collar end. 23. Apical aspect, anterior end. ; Published as part of Sivec, Ignac & Stark, Bill P., 2011, New Species Of Neoperla Needham And Phanoperla Banks (Plecoptera: Perlidae) From The Philippine Islands, pp. 264-279 in Illiesia 7 (24) on page 270, DOI: 10.5281/zenodo.4760560