Zwicknia Muranyi 2014, gen. n.

• Main Authors: Murányi, Dávid, Gamboa, Maribet, Orci, Kirill Márk
• Format: Text
• Language: unknown
• Published: Zenodo 2014
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Plecoptera; Capniidae; Zwicknia; Ortega; Morton; Stripe; Midland; Iglesia; The Arch; Figueroa; Dominguez; Landolt; Black Head; Fennoscandia
• Online Access: https://dx.doi.org/10.5281/zenodo.5116364; https://zenodo.org/record/5116364

Zwicknia Murányi, gen. n. (Figs. 1–2, 7–10, 23, 32, 49–197) Capnia nigra (Pictet, 1833) sensu Morton 1896 — Morton 1896: 60. (complementary description of the adult); Klapálek 1896: 19. (detailed description of the male genitalia); Klapálek 1909: 55, 88 (complementary description of the adult, description of the larva); Hynes 1940: 18. (complementary description of the adult); Hynes 1941: 498. (complementary description of the larva); Hanson 1946: 194. (detailed morphology of the adult); Despax 1951: 154. (complementary description of the adult). Capnia quadrangularis Aubert, 1946 — Aubert 1946: 24. (complementary description of the larva). Capnia bifrons (Newman, 1838) — Brinck 1949: 96. (complementary description of the larva); Kimmins 1950a: 188. (complementary description of the adult); Kimmins 1950b: 9. (complementary description of the adult); Aubert 1951: 281. (complementary description of the larva); Brinck 1952: 56, 111. (complementary description of the adult and the larva); Hynes 1955a: 92. (complementary description of the larva); Hynes 1958: 37, 67. (revised complementary descriptions from Hynes 1940 and 1955a; same in the further editions); Illies 1955: 78. (complementary description of the adult); Winkler 1957: 43. (complementary description of the adult); Aubert 1959: 73, 125. (complementary description of the adult and the larva); Khoo 1964: 29. (description of the aestivating larva); Lillehammer 1965: 49. (complementary description of the adult and the larva); Rupprecht 1965: 1258. (groundplan of mating call); Rupprecht 1968: 43. (details of mating call); Zwick 1973: 163, 183. (terminal morphology of the male); Kis 1974: 119. (complementary description of the adult); Lillehammer 1974: 92. (variability of the adult); Rupprecht 1976: 38. (terminal morphology and different drumming signals of the male); Rupprecht 1982: 96. (different drumming signals of the male); Lillehammer 1988: 136. (complementary description of the adult and the larva); Westermann 1993: 137. (wing polymorphy); Rupprecht 1997: 94. (different drumming signals); Tierno de Figueroa et al. 2003: 242. (complementary description of the adult); Zwick 2004: 320. (further larval characters); Fochetti & Tierno de Figueroa 2008: 227. (complementary description of the adult). Capnia bifrons species group sensu Zhiltzova 2001 — Zhiltzova 2001: 424. (definition); Zhiltzova 2003: 345. (revision). Diagnosis. Male epiproct: B-scl large, divided from Ep-scl; Lb-scl small, divided from Ep-scl; Ep-scl ventrally fused at base and tip, laterally divided in the apex, caudal setae absent; I-scl long, open tube, Ec present. Male Pp: apical part short and wide; Fp long and narrow, divided from Rp. Male Sg: divided from St 9 and Tg 9, vesicle present. Female Sg: rectangular, entire, small lateral sclerites present. Male tergites: Tg 9 with process. Ventral thoracic sclerites: MPrs and MeFs triangular, MeFsp separated from MePfs. Macropterous wings: forewing A1 beyond a and R1 before r curved. Type species. Zwicknia bifrons (Newman, 1838) = Chloroperla bifrons Newman, 1838. Further species included. Zwicknia acuta Murányi & Orci, sp. n. , Zwicknia kovacsi Murányi & Gamboa, sp. n. , Zwicknia rupprechti Murányi, Orci & Gamboa, sp. n. , Zwicknia sevanica (Zhiltzova, 1964) comb. n. , Zwicknia tuberculata (Zhiltzova, 1964) comb. n. , Zwicknia turkestanica turkestanica (Kimmins, 1950a) comb. n. , Zwicknia turkestanica brevicula (Berthélemy & Dia, 1982) comb. n. Description. Medium sized Capniidae, males usually micropterous, also brachypterous or macropterous, females always macropterous. Body length related to season of emergence, smallest late males are 4.5 mm while largest early males are 10.0 mm; females up to 12.0 mm. Pilosity generally short and dense, longer setae occur on the appendages, especially on cerci and femora; male epiproct bare beside B-scl, pilosity of Tg 9 process reduced. Fully sclerotized adults dark brown to black, with even darker rugosities on head and pronotum; wings hyaline, venation dark brown (Figs. 49–51). Teneral coloration (Fig. 52): Mouthparts, palpi and antennae pale, eyes black. Head capsule pale, tentorial callosities and enlarged M-line dark; occipital rugosities usually lacking on teneral specimens. Pronotum pale with brown areas extending around the dark rugosities, central line, front and posterior delimiting folds of pronotal sclerite. Meso- and metanotum of the male with dark Scl and inner corners of Pra, Sct with paired lateral dark patches and a darker stripe beyond Scl. Meso- and metanotum of the female mostly pale with dark inner corners of Pra and limits of the Scl. Wings whitish with pale veins in both sexes. Laterally the thorax is pale with parts of Epm and Tn or Etn dark; legs pale but dorsal part of coxae dark. Ventral surface of the thorax is pale with dark Fs and Fsp. Abdominal tergites of the male with dark brown antecosta, transverse row of four spots present on Tg 1–9. Tg 1 mostly brown, extent of brown color declining on the segments towards the terminalia but gradually darken anteriorly and laterally on the tergites. Process of Tg 9 pale, Tg 10 entirely pale but with two lateral spots. B-scl pale but with dark anterior margin, Lb-scl entirely pale, Ep-scl entirely dark. Abdominal tergites of the female mostly pale, Tg 1–9 laterally with paired longitudinal patch and a pair of spots; Tg 10 entirely pale. Abdominal sternites of the male mostly pale, St 3–8 with anterior sclerites forming a medially interrupted, dark transverse line; Sg with a paired anterolateral spot, vesicle pale. Pp pale with brown tip, cerci pale. Ventral surface of the female abdomen entirely pale. Head: Submentum and mentum small, general Capniidae shaped; glossae apically rounded, paraglossae weakly subdivided, labial palpi short with second palpomere the longest. Maxillae and other mouthparts are of general Capniidae shape, maxillary palpi moderately long with the third palpomere the longest. Head shape usual of Capniidae, eyes smaller than the area delimited by the three ocelli. Ocelli and tentorial callosities prominent in fully sclerotized adults, ecdysial suture, M-line and occipital rugosities usually distinct. Antennae long, with 30 or more antennomeres. Antennomeres club or pearl-like shaped, gradually elongated towards the apex; some of the basal 4–6 antennomeres usually subdivided. Thorax (Figs. 53–55): Prothorax having large Pn with rounded corners. PPrs small, caudally projecting, not fused with the heart-shaped PBs; PPr narrow, fused with PBs; PFs transverse, fused with both PBS and the stripelike, curved PPo; PPfs large, elliptical, not fused with PFs. PEps and PEpm small, fused with each other and Peps to PPr, PEpm touch but not fused with the narrow, curved PEtn. Mesothorax with large MeSct surrounding MeScl, fused with the rectangular, longitudinally divided MePsc and then the wide, laterally subdivided MePra; MeTgl and subalar sclerites are small, none of them fused with other sclerites but the base of forewing; MePscl entire and fused with MeSct in females and macropterous males, while longitudinally divided and not fused with MeSct in micropterous males. MeSs very narrow, touch but not fused with PPfs while fused with the large, oblong MeBs; MePrs elliptical, not fused with MeBs; MeFs triangular and fused with MeBs, and with the distinct, paired MeFsa and the MeFsp; MePfs divided in two lateral, rounded parts by the MeFsp, but the parts are not fused with other sclerites. MeKes fused with MeBs and entirely fused with the ventrally elongated and narrowing MeTn; MeAes fused with MeKes, and projecting in elongated, hardly separated MeAb, MePb and MeAl, among which MePb ends in a globular apex; MeEpm ventrally fused with MeTn, MeKes, MeAes and MeAl, in females and macropterous males it is dorsally fused with MePscl while separated from in micropterous males. Metathorax with MSct smaller than MeSct, but as well surrounding MScl, fused with the rectangular, longitudinally divided MPsc, while MPsc hardly fused with the smaller MPra; MTgl and subalar sclerites are small, none of them fused with other sclerites but the base of hindwing; MPscl entire and fused with MeSct in females and macropterous males, while longitudinally subdivided and hardly fused with MeSct in micropterous males; MPscl fused with Tg 1 in both cases. MPrs triangular, not fused with the large, oblong MBs; MSs small and fused with MBs; MFs stripe-like and fused with MBs, laterally projecting backwards but not fused with St 1. MKes fused with MBs and entirely fused with the ventrally elongated and narrowing MTn; MAes fused with MKes, and projecting in elongated, hardly separated MAb, MPb and MAl, among which MPb ends in a globular apex; MEpm ventrally fused with MTn, MKes, MAes and MAl, in females and macropterous males it is dorsally fused with MPscl while separated from in micropterous males. Legs: Medium sized in relation of other Capniidae. Width of femora fourth to fifth of their length, hind femur reach about the end of Tg 5. Tibiae as long as the femora but less than half the width. Tarsi as wide as tibiae, length of tarsi about half of the corresponding tibia; second tarsomere much shorter than the others, basitarsus shorter than metatarsus on foreleg while as long as on hind leg. Claws symmetrical, smooth and gradually curved, arolium relatively small. Wings: Macropterous wings about as long as the body, covering more than half of the cerci; wing venation show little variability (Figs. 56–57). Forewing: C simple, narrowing gradually from R4+5 towards Cu1; Sc parallel to C, there are two crossveins between C and Sc besides h, Sc curves abruptly beyond the last crossvein and join R around r; h is closest to arc than to wing base; R1 is distinctly curved between its branching with Rs and r, gives one leaning crossvein towards C shortly after r or at least before halfway to C; R2+3 and R4+5 branching at r or with a short crossvein between r and r-m; M branch out to M1+2 and M3+4 with r-m before r; there is only one crossvein between M and Cu1 besides arc and m-cu, this crossvein continues in cu between Cu1 and Cu2; Cu2 ends before half of the wing length, very narrow or interrupted before arc; usually a thin cu-a presents between Cu2 and A1 around a; A1 ends around the R end of arc, distinctly curved and usually thickened beyond a; A2 reaches only as far as h is positioned. Hindwing: C, Sc and their crossveins similar to the forewing; R1 is straight, not branching with R, but starts separately from arc, gives one leaning crossvein towards C shortly after r or at least before halfway to C; R2+3 and R4+5 branching with a crossvein between r and r-m; M branch out to M1+2 and M3+4 after r-m and m-cu; M thin before branching and there is no crossvein between M and Cu1 between arc and m-cu, but sometimes there is one between M3+4 and Cu1, and cu always present; Cu2 parallel to A 1 in its posterior two thirds and ends beyond the position of r, but very narrow or interrupted before arc; usually a thin cu-a present between Cu2 and A1 around a; anal field large, the fold of the wing extending between the parallel Cu2 and A1; A1 straight beyond a, runs close to Cu2; A2 straight, ends around the position of cu, the nearly longitudinally directed a sometimes not reach A2 but terminates backcurved to the wing base; A3 as long as the distance of arc and wing base, extending perpendicular to the longitudinal veins. In case of micropterous or brachypterous males, the wing length is usually constant in some species but may vary intraspecifically (Figs. 58–61). On these winglets, R is the thickest vein and the wing is folded with about 60° around this vein; arc is distinct on the forewing and sets as far as on the macropterous wings, but usually obscured on the hindwing; single M and Cu run to the wing tip, sometimes also with a few crossveins on the forewing; anal veins of the forewing similar in length to the macropterous ones, usually a normal a and the curve of A1 also conspicuous; anal field of the hindwing proportional enlarged but the veins are vestigial. Male abdomen: Tg 1–8 entire and unmodified with sinuous antecosta that is entire on Tg 2–9, entire or medially interrupted on Tg 1; transverse row of four spots present on Tg 1–9. Tg 9 with a raised posteromedial process of different shape characteriztic to species; its sclerotization not thicker than the remainder of the tergite, and its caudal face is membranous with specific shape of lateral sclerotization (Figs. 148–164). Tg 10 subdivided with the entire antecosta forming a thick, rectangular U-shaped process in the medial 1/5 of the segment’s width (Fig. 1). Epiproct consists of a large, anteriorly rounded and raised B-scl that is indented medio-apically and divided from both the Ep-scl and the two Lb-scl (Fig. 1); paired Lb-scl small and triangular with sinuous dorsal margin, divided from both the Ep-scl and the B-scl (Fig. 2). Ep-scl long and curved, caudal setae lacking but spines of specific shape and distribution present on the apex; basally wide but abruptly tapering in the basal third; apical two thirds of the sclerite with the same width or medially swollen; dorsally divided in its full length, ventrally connected at the base and the tip, while laterally divided in the apex – concrete shape is characteriztic for the species (Figs. 106–119, 127–147); Ll lacking; I-scl is a long, dorsally open tube that is curved like the Ep-scl (Figs. 1–2); Ec present in the apical third, between the upper corns of the laterally divided part of Ep-scl (Figs. 1–2, 8–10). St 1 entire and unmodified but smaller than the additional sterna, with rounded corners. St 2–8 consist of a large, rectangular posterior and two small anterior sclerites that are declining in size and fused with the posterior sclerite towards the apical segments; a pair of lateral spots present on St 1–8. St 9 reduced to a well sclerotized arch connecting the ventro-basal part of Tg 9; in its medial part, the arch bear a vesicle of variable size from one third of segment’s width to vestigial (Figs. 83, 99). Sg separated from all other segments, rounded with a more or less triangular shape, apical part with a distinct, incised or rounded tip. Pp wide and short, with rounded apex that is also short and wide. Fp long and narrow, its apical tube curved upward; Rp medium sized, elongated and rounded, divided from Fp (Fig. 23). Cerci longer than the abdomen, with 15 or more segments; segments cylindrical, the basal ones slightly club shaped or pearl-like, gradually elongated towards the apex. Female abdomen: Tg 1–8 divided into two small, rectangular lateral sclerites; small, hardly sclerotized median plates may also present on Tg 2–6. Tg 9–10 entire and unmodified, Tg 10 posteriorly rounded. St 1 entire and unmodified but smaller than the additional sterna, with rounded corners. St 2–7 consist of a large, rectangular posterior and two small anterior sclerites that are declining in size and fused with the posterior sclerite towards the apical segments. Sg large, covers most of the segment 8 but its posterior end equal to the segment’s end, or only very slightly overhanging; the plate is rectangular with slightly rounded or with broad but very narrow indented posterior margin; sclerotization entire without keel, two small antero-lateral nook usually present (Figs. 62, 64–65). Color of the plate is entirely brown, sometimes a bit paler medially; two small lateral sclerites fused with posteriolateral edges of the Sg. Vaginal complex with broad genital opening, membranous genital cavity reach back to segment 7 where it branching into the oviducts; inner sclerites lacking (Fig. 63). St 9 entire, rectangular; Pp large, having short, rounded tips; epiproct simple, membranous. Cerci as long as or shorter than the abdomen, with 15 or more segments; segments cylindrical, the basal segments slightly clubbed, gradually elongated towards the apex. Mature larva: Body relatively stout, body length 5.5–12.5 mm. General color pale yellowish brown with very faint pattern; head, dorsal thoracal sclerites besides wing pads, and abdominal terga usually darker. Teneral coloration apparent below cuticle on pharates, together with dark wing pads. Setation long, but inconspicious. Head shape typical of Capniidae, eyes smaller than the area delimited by the three ocelli (Fig. 66). Ocelli and ecdysial suture are prominent, tentorial callosities less pronounced, M-line and occipital rugosities are hard to observe. Mentum small, typical of the Capniidae; glossae long and apically rounded, paraglossae weakly subdivided, labial palpi short with second palpomere the longest. Maxillae and other mouthparts are of general Capniidae shape and structure, maxillary palpi moderately long with the third palpomere the longest (Fig. 67). Antennae long, with 50 or more antennomeres. Antennomeres cylindrical, the first ten beyond pedicel very short, then gradually elongated towards the apex where antennomeres are about 3× longer than wide. Pn elongated trapezoidal with rounded corners, smooth; rear edge of meso- and metathorax between wing pads rounded, the paired sclerites widely separated from wing pads. Shape of wing pads are typical of Capniidae in macropterous specimens, the mesothoracic pair reach the anterior end of Tg 1, metathoracic pair reach the anterior end of Tg 3; micropterous wing pads always still distinct and separated from the paired sclerites. Lateral thoracic sclerites similar to adults but Epm yet reduced and Aes dorsally not yet divided into Ab, Pb and Al. Ventral thoracic sclerites mostly obscure but Etn, Tn and Fs distinct. PFs longer than of the adult, more elliptical than transverse; MeFs triangular, anterior width half of the intercoxal distance, MeFsa indistinct while MeFsp distinct (forming a Y-ridge with the MeFs); MFs laterally indented (Figs. 68–69). Legs typical of Capniidae, width of femora &frac13; of their length, hind femur reach about the midline of Tg 5. Tibiae as long as the femora but ~½ as wide. Tarsi as wide as tibiae, length of tarsi <½ of the corresponding tibia; basitarsus slightly longer than the second tarsomere on the foreleg, about 2× longer on hind leg but <½ half of the length of metatarsus. Claws symmetrical, smooth and with a basal swelling, regularly curved, arolium vestigial. Abdomen relatively stout, segments 1–9 divided by pleura, integument light and matt. Tg 10 rounded in females, projecting in males; length of the latter equal or shorter than length of Tg 8 and 9, tip blunt, or only slightly raised upwards (Figs. 74–75). Pp wide and short, tip blunt. Cerci usually longer than the abdomen, with 30 or more segments; segments cylindrical, the basal ones short but gradually elongated towards the apex where segments are very slender; the width of segments 11–13 is half to third of their length (Figs. 76–77). Setation: Head with not so dense, moderately long and thick setae and hairs; eye bear small elongated setae between the ocelli; mouthparts with scarce setation besides the sensilla and apical spines but labrum with a pronounced apical tuft of setae rows (Figs. 66–67). Antennal segments with apical whorl of short setae and hairs; campaniform sens : Published as part of Murányi, Dávid, Gamboa, Maribet & Orci, Kirill Márk, 2014, Zwicknia gen. n., a new genus for the Capnia bifrons species group, with descriptions of three new species based on morphology, drumming signals and molecular genetics, and a synopsis of the West Palaearctic and Nearctic genera of Capniidae (Plecoptera), pp. 1-82 in Zootaxa 3812 (1) on pages 24-37, DOI: 10.11646/zootaxa.3812.1.1, http://zenodo.org/record/4919079 : {"references": ["Pictet, F. J. (1833) Memoire sur les Metamorphoses des Perles. Annales des Sciences Naturales, 28, 44 - 65.", "Morton, K. J. (1896) New and little-known Palaearctic Perlidae. The Transactions of the Entomological Society of London, 1896 (1), 55 - 63.", "Klapalek, F. (1896) Uber die Geschlechtstheile der Plecopteren, mit besonderer Rucksicht auf die Morphologie der Genitalanhange. 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