Notanisus sexramosus (Erdős), Erdos

Gibson, Gary A. P., 2015, The presence of Notanisus Walker (Hymenoptera: Pteromalidae) in North America and revision of the oulmesiensis species group, Zootaxa 3948 (3), pp. 422-450 : 424-427

Notanisus sexramosus (Erdős)

Figs 1–15

Pannonica sexramosa Erdős, 1946: 132 –133 (figs 1a, b). Holotype ♂ (HNHM, not examined). Type data: Hungary, Hőgyész, 26.VI.1946.

Pannonica sexramosa ; Erdős, 1957: 361 –362 (♀ description, fig. 20 nec 10; host); Bouček, 1958: 269 –370 (fig. 25: brachypterous ♀, dorsal habitus; fig. 26: macropterous ♀, fore wing; fig. 27: ♂ antenna).

Pannoniella sexramosa ; Erdős, 1960a: 306; Erdős, 1960b: 178 –179 (fig. 71: brachypterous ♀, dorsal habitus; fig. 72: ♂ dorsal habitus); Graham, 1969: 40 –41 (synonymy, distribution, hosts).

Notanisus sexramosus ; Bouček, 1991: 204; Bouček and Heydon, 1997 (fig. 67: brachypterous ♀, dorsal habitus); Bouček and Rasplus, 2009 (fig. 37: brachypterous ♀, dorsal habitus; fig. 39: ♂ antenna); Mitroiu and Andriescu, 2008: 312 (♀, ♂ keyed), 313 (distribution, description of male genitalia), 315 (fig. 4, dorsal habitus of brachypterous ♀), 316 (fig. 8, dorsal head and mesosoma of brachypterous ♀), 317 (fig. 9, lateral head and antenna of ♂), 318 (fig. 15, ♂ genitalia).

Distribution. NEARCTIC: USA. PALAEARCTIC: Europe (see Noyes 2014).

Material examined. NEARCTIC: USA. Maryland: Prince Georges Co., Laurel, 2mi. S., 13.VI.1986, M.E. Schauff (4 brachypterous ♀, USNM). Massachusetts: Middlesex Co., Lincoln, Int[ercept]. Tr[ap]., 3–17.v.1982, ET. Armst[?] (1♂, CNC). Pennsylvania: Allegheny Co., Allison Park, 40.59505°N 79.95483°W, 7, 10, 12.VII.2014, J. Rosenfeld (3 brachypterous and 1 macropterous ♀, CNC).

PALAEARCTIC: CZECH REPUBLIC. Bohemia, Týnistĕ n. orl., obora Bouček (1♂, ETHZ); Velký Vřeštov, 10.5.1958, Bouček (1 brachypterous ♀, ETHZ). ESTONIA *. Koiva puisniit, 4.V.2001, V. Soon (1 brachypterous ♀, MICO). HUNGARY. Veszprém distr., env. Hegyesd, 46.92691°N 17.51883°E, 175 m, 27–28.VI.2010, H. Baur, G. Delvare, G. Gibson, P. Janšta, steppe, scrub, oaks (2♂, CNC). ITALY *. Lazio, Viterbo, Barbarano Marturanum Park, 25.IX.–8.X.1960, Romano Nat. Region, M. Olmi, MT (1♂, CNC). ROMANIA. Dobr. Rezerv., Agigea, 16, 22–25.VII.1964, C.G. Nagy (1 brachypterous ♀ and 2♂, MICO).

Description. FEMALE ( Figs 1, 2 ). Length = 2.2–3.6 mm. Head in lateral view ( Fig. 1 ) slightly angulate at level slightly less than half distance between torulus and anterior ocellus, and in frontal view ( Fig. 3 ) distinctly differentiated into face and frontovertex by sculpture and depending on angle of light color at level of angulation: face green and strongly reticulate with smaller reticulations above level of toruli than laterally on gena; frontovertex dark bluish with some coppery to violaceous lusters under some angles of light, mostly along inner orbits, and with larger but shallower, more isodiametric meshlike reticulation than on face; in dorsal view ( Fig. 2 ) OOL 2.4–3.4× maximum posterior ocellar diameter. Antenna ( Fig. 6 ) with scape yellowish-orange except extreme apex dark dorsally, pedicel and flagellum uniformly dark; fl1 transverse, anelliform, but all funiculars slightly longer than wide and increasing slightly in width toward apical funicular; apical funicular ventrally protruding as short v-shaped angulation extending over base of clava ( Fig. 6 , inset); clava with slender, terminal, setose, spiniform process. Mandibles tridentate with three similar teeth.

Pronotum ( Figs 2, 4 ) dark with slight greenish luster except usually with more or less triangular violaceous to purple region posterolaterally ( Fig. 4 ); meshlike reticulate with collar uniformly low convex, not differentiated posterolaterally. Mesoscutum ( Figs 2, 4 ) similarly colored and uniformly reticulate as pronotal collar, but variably broadly blue to purple or reddish-violaceous posteriorly along transscutal articulation and more extensively on lateral lobes, the lateral lobes sometimes with some coppery luster under some angles of light; scutellar-axillar complex ( Fig. 5 ) dark with slight greenish luster, axillae almost completely obliquely angled, the dorsal surface reticulate and posteriorly oblique surface coriaceous, and scutellum convex ( Figs 1, 4 ), reticulate-rugose to punctate-rugose ( Fig. 5 ). Tegula brown to yellowish. Macropterous ( Figs 1, 7 ) or brachypterous ( Figs 2, 4, 5 ). Macropterous individual with fore wing ( Fig. 7 ) entirely, uniformly setose beyond level of base of marginal vein, including adjacent to marginal vein and apically beyond stigmal vein; costal cell narrow, with inconspicuous pale setae along most of ventral length; stigmal and postmarginal veins conspicuously long, marginal vein only about 3.2× and about 2.4× length of stigmal and postmarginal veins, respectively; disc brownish-infuscate with dark brown setae behind venation except for slightly separated anterior and posterior hyaline spots with white setae, the anterior spot occupying more than half length of marginal vein and much nearer to stigmal vein than base of marginal vein; marginal fringe entire and distinct. Brachypterous individual with wings ( Fig. 5 ) extending only to about level of posterior margin of scutellum; fore wing variably distinctly truncate to obliquely truncate, without marginal fringe except sometimes for a few setae apically and usually narrowly setose and more brownish apically, with very slender costal cell and comparatively thick submarginal vein extending to wing margin apically, the submarginal vein with a few setae apically and sometimes slightly expanded, but without differentiated marginal, stigmal and postmarginal veins; hind wing lanceolate with sinuate, setose vein along anterior margin extending to acutely angled apex with much longer seta. Prepectus bare. Mesopleuron bare along posterior margin ( Fig. 4 ). Metapleuron ( Fig. 4 ) bare, variably extensively reticulate ventrally, but smooth and shiny or at most with obscure, effaced meshlike sculpture dorsally. Legs ( Figs 1, 2 ) with at least pro- and sometimes mesocoxae entirely, and metacoxa ventroapically similarly pale as scape and most of femora, but femora at least dorsoapically and at least meso- and metatibiae dark brown; protarsus darker brown apically than basally, but at least basitarsi of middle and hind legs and sometimes up to subsequent two tarsomeres whitish or at least distinctly paler than subsequent darker brown tarsomeres. Propodeum ( Fig. 8 ) green to bluish-green at least anteriorly mesal to spiracles, but variably extensively blue or purple to reddish-violaceous posteriorly and on callus anterolateral to spiracles, though admarginal strip also green to blue; propodeal panels completely reticulate except for crenulate furrow along anterior margin and median carina extending at most two-thirds distance to admarginal strip; callus smooth and shiny or at least more finely coriaceous anterolateral to than posterior of spiracle.

Petiole ( Fig. 8 ) similarly dark as gaster, body transverse, finely sculptured dorsally and uniformly sclerotized ventrally. Gaster ( Figs 1, 2 ) uniformly dark brown except basally usually with variably distinct green to bluish luster under some angles of light; presyntergal tergites isodiametric meshlike coriaceous except smoother along extreme posterior margins and basal two tergites less distinctly sculptured, with Gt2 strongly transverse, much shorter than other tergites, and Gt4 the largest tergite ( Fig. 2 ).

MALE ( Fig. 11 ). Length = 1.7–2.2 mm. Similar in color to female except head ( Figs 9, 10 ) and mesosoma ( Fig. 12 ) more uniformly dark with slight metallic green to coppery lusters, the frontovertex often with slight bluish luster, but mesosoma without patterning as described for female; legs ( Fig. 11 ) with all coxae, femora and tibiae dark similar to mesosoma; fore wing ( Fig. 13 ) hyaline or at most with only slight brownish infuscation. Setation similar to female, including bare prepectus, except as follows: head, including eye, and thorax and gaster dorsally much more conspicuously setose; fore wing with costal cell much broader and setose dorsally and ventrally, and basal cell also setose. Structure similar to female except as follows: petiole body smooth and shiny dorsally ( Fig. 14 ) and ventrally quite broadly membranous mediolongitudinally over at least anterior half ( Fig. 15 ); antenna ( Fig. 10 ) 12-segmented with ramose flagellum, fl1 strongly transverse (anelliform), basal six funiculars (fl2–fl7) also anelliform but with long ramus uniformly covered with brown setae similar to remaining flagellum, and fl8 at least about 3.8× as long as similarly long fl9 and fl10. Sculpture similar to female except median carina of propodeum absent to entire ( Fig. 12 ).

Hosts. Tetramesa calamagrostidis (Schlechtendal) ( Hymenoptera : Eurytomidae ) developing in stems of reed grass, Calamagrostis sp. ( Poaceae ) ( Bouček 1958).

Remarks. Although not an oulmesiensis -group species, females of N. sexramosus usually have posterolateral regions of the pronotum differentiated by color, though not sculpture. Mitroiu and Andriescu (2008) did not have males of N. clavatus , but the CNC has four males from Iran * identified as this species by Z. Bouček in 1989 as well as males from Croatia (8 CNC) and Greece (2 CNC, 1 BMNH) that appear to be the same species. Similar to conspecific females and males of N. sexramosus , the transverse petiolar body is dorsally smooth and shiny, and ventrally incompletely sclerotized mediolongitudinally (cf. Figs 14, 15 ). Males of N. versicolor have a quadrate to slightly longer than wide petiolar body that usually is quite distinctly sculptured dorsally ( Mitroiu and Andriescu 2008, fig. 12), but which is at least uniformly sclerotized, tube-like. Unlike males of N. sexramosus but like those of N. versicolor , males of N. clavatus have only five flagellar rami.

Figures

FIGURES 1 – 8. Notanisus sexramosus ♀. 1, lateral habitus, macropterous form (2014 - 1). 2 – 5, brachypterous form (2014 - 2): 2, dorsal habitus; 3, head, frontal; 4, mesosoma, dorsolateral; 5, scutellar-axillar complex and wings. 6, antenna (2014 - 2) [insert: preclaval and claval segments, lateral (2014 - 1)]. 7, fore wing (2014 - 1). 8, apex of scutellum – base of gaster and metacoxae, dorsal (2014 - 2).

FIGURES 9 – 15. Notanisus sexramosus ♂. 9, head and pronotum, dorsolateral (2014 - 47). 10, head and antenna, lateral (2014 - 3). 11, lateral habitus (2014 - 3). 12, mesosoma, dorsal (2014 - 4). 13, fore wing (2014 - 4). 14 and 15, petiole and base of gaster (2014 - 4): 14, dorsal; 15, ventral (dashed line in Fig. 14 delimits posterior body from anterior neck of petiole).