Neoperla hamata Jewett, 1975

Stark, Bill P. & Sivec, Ignac, 2008, New Species And Records Of Neoperla (Plecoptera: Perlidae) From Vietnam, Illiesia 4 (3), pp. 19-54 : 29

publication ID	https://doi.org/ 10.5281/zenodo.4758856
DOI	https://doi.org/10.5281/zenodo.4758965
persistent identifier	https://treatment.plazi.org/id/03CA87B2-FF8C-FFE9-FEFB-2DB3708CF8A7
treatment provided by	Felipe
scientific name	Neoperla hamata Jewett
status

Treatment

Neoperla hamata Jewett View in CoL

( Figs. 26‐28 View Figs , 94‐96)

Neoperla hamata Jewett, 1975:131 View in CoL . Holotype ♂ ( California Academy of Sciences ). Kaziranga, Kohara, Assam, India

Neoperla hamata: Uchida & Yamasaki, 1989:142 View in CoL . Redescription

Material examined. Vietnam: Nghe An, W of Con Cuong, Khe Moi Forestry Camp, Khe Moi River , 18 ° 56’ N, 104 ° 99’ E, 23‐24 October 1994, D. Currie, ROM 946110 About ROM , 1 ♀ ( ROM). Tuyen Quang, 6 km NE Pac Ban , UV light, 31 May 1996, D. Currie, D. Darling, J. Swann, ROM 963095 About ROM , 1 ♀ GoogleMaps pinned ( ROM).

Remarks. In their study of the type material of this species, Uchida & Yamasaki (1989) indicate the female had been incorrectly associated, thus the true female of N. hamata has remained unknown. We offer the following description of female and egg for this species based on our associations from Thai material. Fig. 26 View Figs . shows details of the head and pronotal color pattern.

Female. Forewing length 16 mm. Subgenital plate slightly produced, relatively wide and with a wide, shallow notch; central region of sternum 8 almost hairless ( Fig. 28 View Figs ). Vagina long and slender with upturned apex ( Fig. 27 View Figs ). Spermathecal stalk slender; spermatheca slender, short, curled and broadly hooked apically; a single accessory gland occurs near the spermathecal apex.

Egg. Pear shaped. Length ca. 0.31 mm, width ca. 0.22 mm. Collar sessile, ca. 0.08 mm wide at rim; rim not flanged; sides of collar with two irregular rows of cells; lower row of cells punctate; irregular low ridges extend from cell meshwork onto egg body ( Figs. 94‐96 View Figs ). Chorion coarsely punctate throughout; pores surrounded by 4‐6 tiny spikes giving edges, particularly of lid, a spiny appearance.