Neoperla dashahena Du, 2005

Zeng, Liang-Liang, Huo, Qing-Bo & Du, Yu-Zhou, 2024, Redescription of two species of Neoperla Needham, 1905 (Plecoptera, Perlidae) and new distribution records of Neoperla mnong Stark, 1987 in China, Biodiversity Data Journal 12, pp. e 127089-e 127089 : e127089-

publication ID

https://doi.org/ 10.3897/BDJ.12.e127089

DOI

https://doi.org/10.5281/zenodo.13800778

persistent identifier

https://treatment.plazi.org/id/5B52B6D2-2250-5E1B-AB4A-52194FC7B8DE

treatment provided by

Biodiversity Data Journal by Pensoft

scientific name

Neoperla dashahena Du, 2005
status

 

Neoperla dashahena Du, 2005 View in CoL

Neoperla dashahena Du, 2005: 51. View in CoL

Materials

Type status: Holotype. Occurrence: recordedBy: Du Yu-Zhou; individualCount: 1; sex: 1 male; Taxon: scientificNameID: Neoperla dashahena Du, 2005 ; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Plecoptera ; family: Perlidae ; genus: Neoperla ; Location: country: China; countryCode: CN; stateProvince: Guizhou Province; county: Daozhen; locality: Dasha River National Nature Reserve, Xiannvdong ; Identification: identifiedBy: Zeng Liang-liang, Du Yu-Zhou, Huo Qing-Bo; Event: year: 2004; month: 5; day: 22-29; Record Level: language: en; institutionCode: ICYZU; basisOfRecord: PreservedSpecimen

Type status: Paratype. Occurrence: recordedBy: Du Yu-Zhou; sex: 3 males; lifeStage: adult; Taxon: scientificNameID: Neoperla dashahena Du, 2005 ; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Plecoptera ; family: Perlidae ; genus: Neoperla ; Location: country: China; countryCode: CN; stateProvince: Guizhou Province; county: Daozhen; locality: Dasha River National Nature Reserve, Xiannvdong ; Identification: identifiedBy: Zeng Liang-liang, Du Yu-Zhou, Huo Qing-Bo; Event: year: 2004; month: 5; day: 22-29; Record Level: language: en; institutionCode: ICYZU; basisOfRecord: PreservedSpecimen

Description

Adult habitus: General body colour brown. The head is pale yellow with two ocelli. The ocelli are black, surrounded by a quadrate brown area. An inverted brown triangle is present centrally on the frons (Fig. 1 View Figure 1 A); Pronotum is light brown and trapezoidal in shape; Abdominal segments and cerci pale brown.

Male: The middle posterior part of tergite 7 has square or quadrate areas that are slightly raised, the posterior margin of which is sclerotised and has a small sensilla basiconica patch. As specimens of this species have been preserved in alcohol for nearly 20 years, lateral sclerotised areas give the impression of a broad, shallow arc. Tergite 8 bears a recurved tongue-like process with small spines at the distal margin. Hemitergal processes of tergite 10 up-curved, extending backwards to the central process of tergite 9, tip rounded. (Fig. 1 View Figure 1 B-C).

The medial pair of spinule-covered projections appear to be part of the penis base. The endophallus starts distal of these lobes. The connected distal patch of spinules is located anti-apically on the endophallus. (Fig. 2 View Figure 2 B-C and Fig. 3 View Figure 3 A). Larger spinule patch on the dorsal surface of the middle part of the everted endophallus (Fig. 2 View Figure 2 A and Fig. 3 View Figure 3 B), with a row of small spines on the ventral surface of the proximal endophallus (Fig. 2 View Figure 2 C and Fig. 3 View Figure 3 C).

Distribution

China (Guizhou).

Taxon discussion

Neoperla dashahena was originally assigned to the montivaga species group ( Zwick 1983, Zwick 1986) with the penis having incomplete sclerotisation in the ventral aspect. Zwick (2023) recently made this grouping obsolete and erected two subgenera, Neoperla (Borneella) and Neoperla (Formosita) Klapálek.

Due to the presence of paired, ventral spiny lobes at the apex of the penis base, we now assign N. dashahena to the N. (Formosita) lushana - group. The penis of N. dashahena is most similar to Neoperla latamaculata Du, 2005 and Neoperla yaoshana Li, Wang & Lu, 2011 . In N. dashahena , a larger spinule patch exists on the dorsal surface of the everted endophallus, with a row of small spines on the ventral surface of the endophallus. In N. latamaculata , the dorsal surface of the everted endophallus has a " V " - shaped spinules patch. In N. yaoshana , the apical half of the everted endophallus bears a field of fine dorsal and ventral spinules separated by a lateral membranous area.

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Perlidae

Genus

Neoperla

Loc

Neoperla dashahena Du, 2005

Zeng, Liang-Liang, Huo, Qing-Bo & Du, Yu-Zhou 2024
2024
Loc

Neoperla dashahena

Du Y. Z. & Wang Z. J. 2005: 51
2005