Peltoperlopsis swanni, Stark & Sivec, 2007

Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), Illiesia 3 (12), pp. 104-126 : 123-124

publication ID

https://doi.org/ 10.5281/zenodo.4754627

DOI

https://doi.org/10.5281/zenodo.4757867

persistent identifier

https://treatment.plazi.org/id/03C3660C-BE3F-944B-FEF8-3A2F22A98B0F

treatment provided by

Felipe

scientific name

Peltoperlopsis swanni
status

sp. nov.

Peltoperlopsis swanni View in CoL sp. nov.

( Figs. 67-70 View Figs )

Material examined. Holotype ♂ from Vietnam, Lao Cai, Sapa, large waterfall on road from Sapa to Lai Chau, UV light, 8 May 1995, D. Currie, B. Hubley, J. Swann, ROM 956022 View Materials ( ROM).

Adult habitus. Biocellate. Head brown to yellow brown with pale M-line interrupted by narrow median brown band; area around ocelli pale brown ( Fig. 67 View Figs ). Pronotum brown with scattered pale rugosities. Wing membrane pale brown, veins brown. Femora yellow brown, tibiae obscurely banded with broad pale mesal band between small, slightly darker apical bands.

69

Male. Forewing length 11 mm. Tergum 10 with Ushaped brown mark ( Fig. 68 View Figs ). Basal cercal segment ca. 1.3X long as basal width; segments clothed laterally with short fringe setae. Vesicle about 2X wide as long ( Fig. 69 View Figs ). Apical section of aedeagus deeply bilobed; lobes armed dorsally with tiny spike shaped microtrichia, a marginal patch of long thick setae, and an inner patch of fine brown hair-like spines ( Fig. 70 View Figs ); the latter type of spines also occur ventrally in a large marginal patch. Ventral lobes with additional small lobe on each side armed with microtrichia and a patch of triangular spines.

Female. Unknown.

Larva. Unknown.

68

Etymology. The patronym honors J. Swann, one of the collectors of the holotype.

Diagnosis. This species shares the U-shaped tergum 10 feature with P. malickyi but differs from that species in having a smaller and better defined vesicle, shorter cercal fringe setae, and in details of aedeagal armature. Conspicuous among the aedeagal features is the absence of a pair of thin dorsal sclerites as shown by Stark & Sivec (1999) for P. malickyi . The species is also generally similar to P. spinosa but that species has clusters of long bristles on several median cercal segments and long fringe setae on basal cercal segments.

ROM

Canada Entomology Department, Royal Ontario Museum

ROM

Royal Ontario Museum

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