VOLUME EIGHT: 2012
A new Perlodes species and its subspecies from the Balkan Peninsula (Plecoptera: Perlodidae).
Tibor Kovács, Gilles Vinçon, Dávid Murányi, & Ignac Sivec
Illiesia 2012 8(20):182-192. Figures 1-25, 36 references (pp.:191-192.)
(31 December 2012)
Perlodes floridus sp. n. is described on the basis of female, male, egg and larva from the Balkan Peninsula (Montenegro, Albania, Greece). Due to differences in egg structure and male paraprocts, populations from the Greek Peloponnes are described as Perlodes floridus peloponnesiacus ssp. n. Notes on some additional species of the genus are also given.
Keywords: Plecoptera, Perlodidae, taxonomy, Perlodes, new species, new subspecies
[Download .PDF(1590 KB)]
Stoneflies (Insecta, Plecoptera) of Kabarda-Balkarian republic (The Central Caucasus).
Cherchesova, S.K., M.N. Shioloshvili, A.V. Yakimov, E.V. Nemno, V.D. L`vov, & N.E. Kovilyaeva
Illiesia 2012 8(19):174-181. Figures 1-7, 9 references (p.:181.)
(17 December 2012)
In this study 17 stonefly species are reported for the Kabarda-Balkarian Republic, The Central Caucasus. Distributions and ecological notes are presented for each species and the significance of stonefly distributions to local water quality is discussed.
Keywords: Stoneflies, Plecoptera, river and spring streams, Kabarda-Balkarian Republic, The Central Caucasus
[Download .PDF(1490 KB)]
Michigan Plecoptera (Stoneflies): distribution patterns and an updated species list.
Scott A. Grubbs, Massimo Pessino, & R. Edward DeWalt
Illiesia 2012 8(18):162-173. 2 Tables, 27 references (pp.:172-173.)
(10 December 2012)
The stonefly fauna of Michigan is updated, increasing the number of species verified from the state to 68. Twelve species are reported for the first time while two species of Isogenoides and Taeniopteryx maura (Pictet) are removed. Eight of the nine Nearctic families are represented. Peltoperlidae is the sole family not present in Michigan. Perlodidae (18 species) and Perlidae (17 species) were the most speciose families in the state, and Isoperla (Perlodidae) was easily the most species-rich genus (11). Within the Michigan portion of the four Great Lakes bordering the state, eight species have been obtained from Lake Superior compared to none from Lake Erie and two species total collected from Lake Huron and Lake Michigan. Half (34 species) of the state fauna appears to be distributed only in the northern Lower Peninsula and Upper Peninsula, while 27 species are broadly distributed throughout the state. We discuss, in detail, 25 species that appear to be rare or uncommon and sparsely-distributed. This group includes four species known only from historical records (prior to 1950) and two that are presumably extirpated from the state (Helopicus nalatus (Frison) and Attaneuria ruralis (Hagen)).
Keywords: Plecoptera, stoneflies, Nearctic, Michigan, extirpation
[Download .PDF(538 KB)]
Description of the larva of the Caucasian species Protonemura microstyla Martynov (Plecoptera, Nemouridae).
L.A. Zhiltzova, S.K. Cherchesova, & I.E. Dzhioeva
Illiesia 2012 8(17):158-161. Figures 1-6., 13 references (p.:161.)
(12 November 2012)
For the first time the larva of Protonemura microstyla Martynov is described from Caucasian material. It differs from the larva of P. bifida Martynov by very short blunt setae on pronotal margins and by a short pair of setae on the hind margin of abdominal tergites.
Keywords: Protonemura, larval description, Nemouridae, Caucasus
[Download .PDF(819 KB)]
Stonefly sex gone awry: An attempted mating by a Perlinodes aureus (Smith) male with a Pteronarcys californica Newport male.
Robert L. Newell & Richard W. Baumann
Illiesia 2012 8(16):152-157. Figures 1-6., 9 references (pp.:157.) (29 October 2012)
A male of the Perlodidae genus Perlinodes attempted to mate with a male of the Pteronarcyidae genus Pteronarcys and they became attached. The specimens were captured but they were still unable to disengage because of the large terminal dorsal appendages of the Perlinodes aureus (Smith) male. This type of unnatural mating behavior may be the result of misidentification based on the similar size of the Pteronarcys californica Newport male with that of a Perlinodes female. Such attempts probably occur at low levels in nature but are seldom observed because the individuals are able to separate naturally.
Keywords: Plecoptera, stoneflies, mating, Perlodidae Perlinodes, Pteronarcyidae Pteronarcys, Washington, USA
[Download .PDF(1030 KB)]
On the trophic role of Leuctra cf. signifera (Plecoptera, Leuctridae) in a small stream in Mara valley (East Carpathians, Romania).
Dávid Murányi, José Manuel Tierno de Figueroa & Manuel Jesús López-Rodríguez
Illiesia 2012 8(15):147-151. Figures 1-3., 1 table, 12 references (pp.:149-151.) (1 October 2012)
A study of the gut contents of nymphs of Leuctra cf. signifera Kempny 1899 from the Mara valley (Romania) was carried out on the basis of three samples taken in different seasons, as well as a study of the feeding habits of the 24 coexisting taxa. The diet of L. cf. signifera was composed mainly by coarse particulate organic matter (CPOM) and detritus, this species is both shredder and collector-gatherer. The macroinvertebrate community was dominated by collector-gatherers and scrapers, followed by shredders, while predators were scarce and filterers were absent. The studied community would coincide with that typical for a mid- to low-order stream.
Keywords: Plecoptera, Leuctra cf. signifera, trophic ecology, CPOM, Carpathians
[Download .PDF(973 KB)]
Notes on Claudioperla tigrina (Klapálek) in Ecuador (Plecoptera: Gripopterygidae).
Bill P. Stark, Boris C. Kondratieff, & Brian Gill
Illiesia 2012 8(14):141-146. Figures 1-13., 9 references (p.:146.)
(3 September 2012)
The first adult specimens of Claudioperla from the Republic of Ecuador are described from light and scanning electron microscopy. Males are compared with existing descriptions of the only currently accepted species, C. tigrina (Klapálek), and the known Ecuadorian distribution is summarized.
Keywords: Claudioperla, Gripopterygidae, Plecoptera, Republic of Ecuador, new records
[Download .PDF(1160 KB)]
Notes on Rhopalopsole Klapálek (Plecoptera: Leuctridae), with descriptions of three new species from Vietnam.
Bill P. Stark, Ignac Sivec and Takao Shimizu
Illiesia 2012 8(13):134-140. Figures 1-12., 11 references (p.:140.) (14 August 2012)
Rhopalopsole azun sp. n., R. minima sp. n. and R. sapa sp. n. are described from specimens collected in Vietnam, and compared to congeners known from the region. An additional unassociated female is described under informal designation, and a new name is provided for the Japanese species R. longicercia Sivec & Shimizu, nomen nudum. A list of Rhopalopsole species known for Vietnam is provided, and a key to males for the known Vietnamese species is presented.
Keywords: Rhopalopsole, Plecoptera, Leuctridae, Vietnam, new species
[Download .PDF(1020 KB)]
Life history and food habits of Isoperla quinquepunctata (Banks) (Plecoptera: Perlodidae) from a spring source and Willow Creek in the Piceance Basin, Colorado.
Robert J. Martinson, John B. Sandberg, & Boris C. Kondratieff
Illiesia 2012 8(12):125-133. Figures 1-7., 2 tables, 33 references (pp.:132-133.) (13 August 2012)
Life history aspects of the perlodine stonefly Isoperla quinquepunctata (Banks) are reported from the Piceance Basin, Colorado. We wished to discover if the conditions of a spring source would affect the life cycle and relative food habits of I. quinquepunctata as compared to nearby Willow Creek, a typical region small stream site. It is often unusual to find stoneflies directly in a spring source in the southern Rocky Mountains, which had dissolved oxygen concentrations well below 5.2 mg/l (58% saturation), but with flowing water. Isoperla quinquepunctata exhibited a univoltine slow life cycle with extended hatching at both sites. At the spring, while the largest I. quinquepunctata nymphs ingested a variety of food types, they did not switch to carnivory as has usually been reported for Isoperla. Diatoms comprised the majority of the gut contents of nymphs from both the spring and Willow Creek sites, with detritus a more important component at the Willow Creek site.
Keywords: Life history, Isoperla quinquepunctata, food habits, drift, Colorado, Piceance Basin
[Download .PDF(875 KB)]
The genus Perlomyia Banks in Taiwan (Plecoptera: Leuctridae).
Ignac Sivec and Bill P. Stark
Illiesia 2012 8(11):119-124. Figures 1-12., 11 references (pp.:123-124.)
(7 August 2012)
Three previously unrecognized species of Perlomyia Banks are described from Taiwan and compared to others in the genus. New taxa include P. angulata sp. n., P. excavata sp. n. and P. taiwanensis sp. n.
Keywords: Perlomyia, Leuctridae, Plecoptera, Taiwan, New species
[Download .PDF(1540 KB)]
Anacroneuria pakaraima and A. wokomung, two new stonefly species from Guyana (Plecoptera: Perlidae).
Bill P. Stark
Illiesia 2012 8(10):114-118. Figures 1-13., 8 references (p.:118.) (25 July 2012)
Two new stonefly species, Anacroneuria pakaraima sp. n. and A. wokomung sp. n., are described from adult male and female specimens collected on Mount Wokomung, Guyana. The new species are compared to similar ones known from northeastern South America, and a provisional key to male Anacroneuria from Guyana is presented.
Keywords: Anacroneuria, Plecoptera, Perlidae, New species, Guyana
[Download .PDF(783 KB)]
An amended redescription of the male of Perlesta etnieri (Plecoptera: Perlidae) plus new Perlesta state records.
Scott A. Grubbs
Illiesia 2012 8(9):111-113. Figure 1., 9 references (p.:113.) (16 July 2012)
An amended, partial redescription of the male of Perlesta etnieri Kondratieff and Kirchner (Plecoptera: Perlidae) is given, namely regarding the fully-extruded aedeagus that had not been previously reported or illustrated. The aedeagus bears a very small caecum, calling into the question the relatedness of this species to others in the P. frisoni Banks “group” that clearly lack a caecum. New state records for P. decipiens (Walsh) (Tennessee), P. lagoi Stark (Alabama), and P. shawnee Grubbs (Kentucky) are reported.
Keywords: Perlesta etnieri, Perlidae, Tennessee, Alabama, Kentucky
[Download .PDF(448 KB)]
Lednia tetonica, a new species of stonefly from Wyoming (Plecoptera: Nemouridae).
Richard W. Baumann and Ronald G. Call
Illiesia 2012 8(8):104-110. Figures 1-13., 7 references (p.:110.) (12 July 2012)
Lednia tetonica, sp. n. of the stonefly family Nemouridae is named from South Fork Darby Creek, Wind Cave, Teton County, Wyoming. The male and female adults and male and female larvae are described. Illustrations are provided as line drawings and scanning electron microscope images. Photographs are provided of the cave and the creek near the type locality.
Keywords: Plecoptera, Nemouridae, Lednia, stoneflies, Wyoming, North America
[Download .PDF(2170 KB)]
Seven new species of Perlomyia (Plecoptera: Leuctridae) from Japan.
Ignac Sivec and Bill P. Stark
Illiesia 2012 8(7):94-103. Figures 1-27., 15 references (p.:103.) (5 June 2012)
Seven new species of Perlomyia are described from specimens collected in Iwate Prefecture and Nara Prefecture, Honshu, Japan. A key to the Japanese male Perlomyia (P. gifuensis [Kohno] excluded), and a checklist for 18 currently recognized species are presented. Perlomyia nipponica (Okamoto) is placed as a nomen dubium.
Keywords: Perlomyia, Leuctridae, Plecoptera, Japan, New species
[Download .PDF(2190 KB)]
New species and records of Anacroneuria (Plecoptera: Perlidae) from Ecuador and Paraguay.
Bill P. Stark, Boris C. Kondratieff and Brian Gill
Illiesia 2012 8(6):78-93. Figures 1-35., 25 references (pp.:92-93.) (24 May 2012)
Five new species of Anacroneuria Klapálek are described from Ecuadorian specimens. New taxa include A. apuela, A. cushueme, A. kayceae, A. malkini, and A. pichincha. New distribution records are also presented for six species including three, A. atrifrons Klapálek, A. chavin Stark & Sivec and A. guambiana Zúniga & Stark, not previously reported from Ecuador. An additional species represented by a female specimen is described under an informal designation, the larva of A. gaumbiana is described, and a checklist of 54 species reported for Ecuador is presented. The first Paraguayan specimens of A. atrifrons are also reported.
Keywords: Anacroneuria, Plecoptera, Perlidae, New species, Ecuador, Paraguay
[Download .PDF(1830 KB)]
Epiproct and dorsal process structure in the Allocapnia forbesi Frison, A. pygmaea (Burmeister), and A. rickeri Frison species groups (Plecoptera: Capniidae), and inclusion of A. minima (Newport) in a new species group.
Bill P. Stark and Boris C. Kondratieff
Illiesia 2012 8(5):45-77. Figures 1-120., 1 table, 35 references (pp.:76-77.) (14 May 2012)
Epiprocts and tergal processes for males of twenty Allocapnia species assigned to the A. forbesi Frison, A. pygmaea (Burmeister), and A. rickeri Frison groups were examined with scanning electron microscopy. Results suggest these groups are closely related and that A. minima (Newport) should be excluded from the A. forbesi group and assigned to its own group.
Keywords: Allocapnia, Male Genitalic Structures, Scanning Electron Microscopy, Plecoptera
[Download .PDF(5500 KB)]
Isoperla prokopovi, a new presumedly parthenogenetic stonefly from Crimea (Plecoptera, Perlodidae).
L.A. Zhiltzova and P. Zwick
Illiesia 2012 8(4):37-44. Figures 1-14., 11 references (p.:44.)
(24 April 2012)
Isoperla prokopovi sp. n. from Crimea is described from females, larvae, and eggs. Males or male larvae were not found, despite concerted efforts. The species is therefore believed to be parthenogenetic. The life cycle appears to be univoltine, possibly with a long egg diapause. The thick egg chorion differs from other Perloidea in that it disintegrates in KOH. Isoperla prokopovi is an isolated species without apparent close relatives among the West Palaearctic Isoperla spp.
Keywords: Taxonomy, Ukraine, Crimea, new species, parthenogenesis, life cycle
[Download .PDF(1280 KB)]
Larvae of the Nearctic species of the stonefly genus Megarcys Klapálek (Plecoptera: Perlodidae).
Kenneth W. Stewart and Boris C. Kondratieff
Illiesia 2012 8(3):16-36. Figures 1-88.,1 plate, 25 references (pp.:35-36.) (6 March 2012)
Associated larvae of the five Nearctic species of Megarcys are comparatively described and illustrated. Four of them, Megarcys irregularis Banks, M. subtruncata Hanson, M. watertoni (Ricker), and M. yosemite (Needham & Claassen) are described in detail for the first time. Body size and setation, wingpad macroptery/brachyptery, and gill size were variable between populations of some species. Diagnostic differences were not found in late instar larvae of the five species in color and pigment patterns, mouthparts, body and appendage setation, gill size and structure, and developing male and female genitalia. The detailed descriptions and measurements help expand the generic diagnosis, show morphological differences between populations of different habitats, and provide an atlas of illustrations for larvae of the five species.
Keywords: Plecoptera, stonefly larvae, Megarcys, Nearctic
[Download .PDF(2370 KB)]
A new species of the western North American genus Triznaka from Oregon (Plecoptera: Chloroperlidae).
Boris C. Kondratieff & Richard W. Baumann
Illiesia 2012 8(2):10-15. Figures 1-14., 7 references (p.:15.) (23 February 2012)
A new species of Chloroperlidae in the genus Triznaka, T. wallowa, is described from Union Co., Oregon, U.S.A. Distinguishing characters and a key to the North American species are given.
Keywords: Plecoptera, stonefly, Triznaka, new species, Oregon, U.S.A.
[Download .PDF(1170 KB)]
New records and an updated checklist of the Stoneflies (Plecoptera) from Florida.
Donald H. Ray, Rick L. Abad, Andrew K. Rasmussen, and Bill P. Stark
Illiesia 2012 8(1):1-9. Figures 1-9., 21 references (p.:8-9.)
(13 January 2012)
New state records of Allocapnia starki Kondratieff & Kirchner, Isogenoides varians (Walsh), and Perlesta shubuta Stark are presented for Florida. Ecological notes for Florida populations and additional new collection records for Alloperla prognoides Surdick & Stark and several other stonefly species are presented. Larvae and adults were collected in or along gravel stream reaches.
Keywords: Allocapnia, Alloperla, Isogenoides, Perlesta, gravel, hyporheic, stonefly, Southeastern Coastal Plain, streams
[Download .PDF(1130 KB)]