Notanisus brevipetiolus, Gibson, Gary A. P., 2015

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 : 429-432

Notanisus brevipetiolus n. sp.

Figs 16–26

Type material. Holotype ♀ ( NMPC). N. Rhodesia [ Zambia]: Congo Border, Niankasa / 126.29 / 22.XI.1929, H. Silvester Evans / Pres. by Imp. Inst. Ent., Brit. Mus. 1932.1545 [entire but glued ventrally along length to point, with mouthparts and some other ventral features obscured by glue].

Paratype. UGANDA. Lake Victoria, XI.1971, H. Falke (1♀ CNC).

Etymology. Formed from the Latin words brevis (short) and petiolus (stalk) in reference to its comparatively short petiole.

Description. FEMALE ( Figs 16, 17 ). Length about 1.9 mm. Head in frontal view ( Fig. 21 ) with face and frontovertex mostly dark or with slight violaceous luster under some angles of light, except face above scrobes and sometimes scrobes somewhat more distinctly green, and frontovertex sometimes more extensive green to partly reddish-violaceous; frontovertex distinctly differentiated by difference in sculpture at level about midway between toruli and anterior ocellus, with larger, shallower, more isodiametric meshlike reticulation dorsad level compared to much smaller, more transversely punctate-reticulate sculpture ventrad level; in lateral view lower face and gena posterior to malar sulcus similarly strongly sculptured and colored; in dorsal view OOL 2.1–2.2× maximum diameter of posterior ocellus. Antenna ( Fig. 19 ) yellow; fl1slightly transverse, fl4 almost 0.8× length of fl2 and fl3, and funiculars increasing in width and beyond fl4 decreasing in length such that apical funicular slightly transverse in dorsal view; apical funicular ventrally extending under clava as apically tapered, ventrally sparsely setose, finger-like projection to level where clava tapers into terminal, setose, ventrally curved finger-like process. Mandibular dentition not clearly visible.

Pronotal collar ( Figs 16 , 23 ) in lateral view flat but in dorsal view with abruptly declivitous concave regions posterolaterally such that pronotum appears more or less “shoulder-like” on either side; dorsally punctulatereticulate and mostly dark or green with coppery luster except neck yellowish and much more finely sculptured and shinier posterolateral declivitous regions violaceous to partly blue or green laterally where more distinctly meshlike coriaceous, with each region having line of obvious white setae along lateral margin and transversely across region behind transverse anterior margins that together delineate posterior margin of broadly V-like convergent dorsal sculptured region. Mesoscutum ( Figs 16 , 23 ) anteromesally between incomplete notauli dark and similarly punctulate-reticulate as pronotum dorsally, but over about posterior half and on lateral lobes posteriorly with larger, more mesh-like reticulations and mostly dull to bright greenish-coppery, though with some reddishviolaceous anterior to axilla; scutellar-axillar complex ( Fig. 22 ) dark with coppery to green or reddish-violaceous lusters depending on angle of light, particularly axillae, axilla with slender dorsal reticulate surface at most about as long as length of median crenulate region between axillae and with obliquely angled posterior surface much more finely meshlike coriaceous, and scutellum convex ( Fig. 23 ), reticulate-punctate dorsally but more reticulate to reticulate-imbricate laterally and posteriorly ( Fig. 22 ), the dorsal sculpture intermediate in size between anteriorly and posteriorly on mesoscutum. Tegula brown. Macropterous; fore wing ( Figs 20 , 25, 26 ) marginal vein about 6.2– 7.5× length of stigmal vein; postmarginal vein extending slightly but distinctly beyond level of uncus; uncus ( Fig. 26 ) diverging from stigmal vein apically so distinct stigma not differentiated and apex separated from posterior margin of postmarginal vein by distance slightly greater than width of postmarginal vein or uncus and subequal to or less than maximum height of stigma plus uncus; costal cell bare; disc ( Figs 20 , 25 ) with variably large yellowish-brown region behind parastigma and larger, similarly colored region behind about apical half of venation anterior to medial fold, the two infuscate regions sometimes continuous posteriorly to form a U-shaped region ( Fig. 20 ), with longer brownish setae in infuscate regions and shorter, less conspicuous setae apically, except bare behind parastigma and marginal vein basally, the bare region conspicuously expanded posteriorly within hyaline area between infuscate regions, and dorsally with comparatively large, elongate bare region beyond stigmal vein ( Fig. 26 ); marginal fringe present except anteroapically beyond postmarginal vein. Prepectus bare or with a few short, inconspicuous setae posteroapically. Mesepimeron in dorsal half (upper mesepimeron) with short white setae along extreme posterior margin ( Fig. 24 ). Metapleuron ( Fig. 24 ) reticulate ventrally but more finely sculptured, almost isodiametric meshlike coriaceous over at least dorsal two thirds and with sparse white setae anteroventrally and dorsally and posteriorly in more finely sculptured region. Metasternum comparatively short, with bases of meso- and metacoxae about on same level and apex of mesocoxa projecting conspicuously beyond base of metacoxa. Legs ( Figs 16, 17 ) with procoxa orange to orangey-brown, mesocoxa darker brown with slight metallic luster, and metacoxa dorsally dark brown with variably distinct reddish-violaceous or green lusters depending on angle of light but yellowish- to orangey-brown ventrally; femora, tibiae and tarsi orangey-brown to dark brown except basal three or four tarsomeres of meso- and metatarsi more yellowish compared to somewhat more darker brown apical tarsomeres; metacoxa bare dorsally ( Fig. 18 ). Propodeum ( Fig. 18 ) with crenulate band along anterior margin recurved posteromedially into narrowly V-shaped rugose to crenulate region on either side of partial to complete median carina; panels otherwise reticulate except for comparatively small smooth and shiny region anteromesally on either side of median sculptured region, and multicolored, variably blue to purple anteriorly in smoother regions to partly green or reddish-violaceous over sculptured part of panels; callus finely though quite distinctly coriaceous and multicolored similar to panels.

Petiole ( Fig. 18 ) yellowish-brown, subquadrate with parallel sides, only slightly longer than wide. Gaster ( Figs 16, 17 ) dark brown except for two lighter, more yellowish bands basally, one across apical smoother part of Gt1 and Gt2, and one across apical smoother part of Gt3; presyntergal tergites isodiametric mesh-like coriaceous except smoother along posterior margins and basal two tergites smooth and shiny or Gt1 with only subeffaced mesh-like sculpture basally, with Gt2 strongly transverse, much shorter than other tergites, and Gt4 the largest tergite.

MALE. Unknown.

Host. Unknown.

Remarks. Minimally, colour of the petiole, structure of the antennal clava (Fig. 28), and a distinctively short, transverse-bandlike Gt2 ( Yang 1996, fig. 144) are shared between N. brevipetiolus , N. longipetiolus and N. gracilis . However, the latter feature is also shared with N. kansensis and N. oulmesiensis within the oulmesiensis -group, and the total number of features that females of the three species share is uncertain because the holotype of N. gracilis was not studied for comparison. Females of N. brevipetiolus and N. longipetiolus are most easily separated from each other by relative length of the petiole (cf. Figs 18 , 42 ) and gastral color pattern (cf. Figs 16, 17 , 37 ). Additional females are needed to determine whether the apparently less extensively setose posterior margin of the mesopleuron (cf. Figs 24 , 41 ) is an additional differential feature for N. brevipetiolus . Among observed Notanisus , setae along the posterior margin of the mesopleuron is unique to females of N. brevipetiolus and N. longipetiolus . Such setae are also possessed by many species of Cleonymus , but not observed Callocleonymus . Males of N. brevipetiolus are unknown, but based on presumed relationships with N. longipetiolus they likely have a pedicellate flagellum, the metapleuron partly setose (similar to females) but the posterior margin of the mesopleuron bare, and the pronotum entirely reticulate, though possibly with a difference in color differentiating posterolateral regions.

Figures

FIGURES 16 – 20. Notanisus brevipetiolus, ♀ holotype. 16, dorsal habitus. 17, dorsolateral habitus. 18, propodeum, petiole and metacoxae, dorsal. 19, antenna, lateral. 20, fore wing.

FIGURES 21 – 26. Notanisus brevipetiolus, ♀ paratype. 21, head and pronotum. 22, scutellar-axillar complex. 23, pronotum and mesonotum, dorsolateral. 24, mesepimeron and metapleuron. 25, fore wing. 26, fore wing apex (dashed lines delimit dorsal bare region).

FIGURES 37 – 45. Notanisus longipetiolus ♀. 37 – 41, holotype: 37, lateral habitus; 38, pronotum and mesonotum, dorsolateral; 39, head and pronotum; 40, scutellar-axillar complex; 41; mesepimeron and metapleuron. 42, propodeum – base of gaster and metacoxae, dorsal (2014 - 45). 43 – 45, holotype: 43, antenna, lateral; 44, fore wing; 45, fore wing apex (dashed lines delimit dorsal bare region).