Neoperla filamentosa Zwick & Zwick 2023, n. sp.
Creators: name: Zwick, Peter
name: Zwick, Andreas
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Neoperla
Neoperla filamentosa

description: 53. Neoperla filamentosa n. sp.    
(Figs. 305–308)  
 Holotype ♀: Republic of Guinea: Bolongo, P [iège] L[umineuse] 19.10.1984 (SMNS, gift J.M. Élouard; Z16/91, NEOP162).   
 Additional material studied: Republic of Ghana: 2♀, Subri r. [6.238N, - 2.282E] 05.11.1993 light trap; NUFU project, Uni Bergen (SMNS; slides GH02-8). 3♀, Ghana, western reg., Ankasa Resource Res., Nkwanta Camp 05°16.566’N 002°18342’ 7–8 Jun 2005 K.B. Miller, colr. (BYU, slides Z18.75 & 77). République de Côte d’Ivoire: 1♀, 15 km North of Lakota [5.86N, - 5.68W], white light trap. 23-X-1971 J.A.Gruwell (USNM _124, slide Z17.66; Moore 1991, SEM-figs 18, 19). Côte d’Ivoire, riv. M’pe’do (affl. Agneby, rég. Abidjan [N 5.40912 W 4.04221]) 25.10.1983 J.H.Hougard & H. Prod’hon (gift J.M. Gibon; AfrZ86/25&26). Republic of Sierra Leone: 3♀: Northern Province [~ 9.3 N, ~ 11.7E], Yfin, at light 21.11.1983 W. Rossi (SMNS; Z16 /12, gift R. Fochetti).   
  Specimens with variable egg collar assigned to N. filamentosa with doubts:  Republic of Cameroon: 4♀, Cameroun, 52 mi S Garoua [9.32N, 13.39E], Boki R., 330m, 29.IX.1966, E.S.Ross & K.Lorenzen (CASENT 8413019, Slide Z17.64). Egg slides Z16/96 und Z17.65 also in SMNS. Republic of Guinea: 1♀: Niandan, Bambaya [9.20N, 10.42W] 25.10.1984 (AfrZ86/15; SMNS). Republic of Senegal: 1♀: Touba [14.8515, -15.8959] viii.1982 (Z.AfrZ86/11; SMNS). Republic of Sierra Leone: Northern Province, Kondembaia [9.333, -11.564], 22.11.1984 W. Rossi (Z.Afr 98.02; SMNS).   
 Habitus. Probably faded, yellow except a faint brownish ocellar spot and an ochre flagellum. WL 10.3 mm.   
 Male. Unknown.   
 Female (Fig. 305). As for the complex, a shallow rounded notch in the sclerotised caudal edge of S8.   
 Egg (Fig. 306–308). Elongate oval, on average 357*213µm (n=4),>20 typical specimens without collar and>20 dextrogyrous striae (Figs. 306–307). Operculum with a few cells on its small conical top. Egg striae with broad bare costae and narrow sulci which have 1 row of micropunctures along each side. Micropyles are minute holes in the sulci next to which the rows of micropunctures are interrupted.   
 DNA (Figs. 491–492, 496). Only the female holotype from Guinea was sequenced with the genome skimming approach, resulting in only 3,102bp of mitochondrial, protein-coding genes. It is poorly supported (43.9/90/0) as sister to N. orthonema n. sp. (see N. orthonema n. sp. above). Together, they are maximally supported (100/100/100) as sister to N. spironema n. sp..   
 Notes. Several specimens with eggs with a collar (Fig. 308) are with doubts assigned to N. filamentosa n. sp.: collar and anchor cavity seem to be variable and we notice no other differences. Striation of eggs differs from N. orthonema n. sp. and N.spironema n. sp. and is the same as in members of the N. excisa and N. sjostedti operational complex.   
 Etymology. An adjective derived from Latin filamentum, a thread, an allusion to the structure of the anchor, with threads instead of a solid stem.
description: Published as part of Zwick, Peter & Zwick, Andreas, 2023, Revision of the African Neoperla Needham, 1905 (Plecoptera: Perlidae: Perlinae) based on morphological and molecular data, pp. 1-194 in Zootaxa 5316 (1) on page 120, DOI: 10.11646/zootaxa.5316.1.1, http://zenodo.org/record/8154005