Cryptoperla curvata, Stark & Sivec, 2007

Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), Illiesia 3 (12), pp. 104-126 : 105-106

publication ID

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

DOI

https://doi.org/10.5281/zenodo.4757841

persistent identifier

https://treatment.plazi.org/id/03C3660C-BE2D-945D-FEEC-3C4725388DC0

treatment provided by

Felipe

scientific name

Cryptoperla curvata
status

sp. nov.

Cryptoperla curvata View in CoL sp. nov.

( Figs. 1-7 View Figs View Figs )

Material examined. Holotype ♂ and 3 ♂, 4 ♀ paratypes (1 ♂ damaged) from Vietnam, Gia Lai, An Khe District, Tram Lap, Azun River , UV light, 2 km NW on trail from forestry building, 14 ° 27’ N, 108 ° 33’ E, 17 June 1996, D.C. Currie, J. Swann, ROM 961056 About ROM ( ROM). Additional paratypes, all from Vietnam: Gia Lai, An Khe District , Tram Lap , Azun River , 3 km NE forestry building, 21 June 1996, UV light, D.C. Currie, J. Swann, ROM 961076 About ROM , 2 ♂, 3 ♀ ( ROM). Gia Lai, An Khe District , 6 km wide tributary of Azun River , NE of Tram Lap, 20 June 1996, B. Hubley, D.C. Currie, 961073, 1 ♂ ( IEBR). GoogleMaps

Adult habitus. Biocellate. Head yellow with slightly darker yellow brown area extending from ocelli over central frons to anterior callosities and beyond as a tongue shaped extension ( Fig. 1 View Figs ). Pronotum pale with obscure darker areas scattered on disc. Wings transparent, veins pale amber. Legs yellow brown but apical tarsi slightly darker.

Male. Forewing length 8.5 mm. Posterior margin of tergum 10 parabolic; center offset from apex by a pair of low, elevated lateral knobs ( Fig. 2 View Figs ). Basal cercal segment ca. 4.5X long as basal width and with sparse to dense inner marginal setal fringe near apex ( Fig. 4 View Figs ); apex of basal segment curved dorsad and armed with a multidentate spur which bears ca. 10 subapical teeth. Vesicle about 1.3X wide as long ( Fig. 3 View Figs ). Aedeagus membranous, armed at bases of apical lobes with a pair of sparse patches of thick setae; additional armature on ventral surface consists of very fine, short setae and microtrichia ( Fig. 5 View Figs ).

Female. Forewing length 9.5 mm. Subgenital plate parabolic and reaching near posterior margin of sternum 9 ( Fig. 6 View Figs ); plate with a narrow bare marginal band and an internal transverse band of microtrichia near gonopore. Sternum 9 bare except on lateral margins; posterior margin slightly produced over base of segment 10.

Egg. Total length about 0.296 mm, width about 0.158 mm. Collar short, length about 0.01 mm, width about 0.052 mm. Chorion coarsely punctate throughout; each pit surrounded by an obscure follicle cell impression (FCI); ca. 17 longitudinal rows of pits and ca. 11 horizontal rows visible in lateral aspect ( Fig. 7 View Figs ). Micropyles set on FCI walls between pits.

Larva. Unknown.

Etymology. The species name is based on the upturned spur of the basal cercal segment.

Diagnosis. Males of this species will key to C. karen

in Stark (1989) and the female and egg are also similar to that species, suggesting a sister group relationship. Males are distinguished by the upturned cercal spurs having ca. 10 spines instead of the 1-3 long spines found in C. karen . Females share the bare marginal band on the subgenital plate with C. karen but the presence of an internal transverse microtrichia band near the gonopore in C. curvata will distinguish the two. Eggs of the two species are virtually identical but in the small sample presently available, those of C. curvata are narrower at the micropylar line than below the collar, whereas those of C. karen have almost parallel sides ( Stark 1989; Stark & Sivec 1999).

UV

Departamento de Biologia de la Universidad del Valle

ROM

Royal Ontario Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Peltoperlidae

Genus

Cryptoperla

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