Felisacus bismarckensis, Namyatova & Cassis, 2016

Namyatova, Anna A. & Cassis, Gerasimos, 2016, Revision And Phylogeny Of The Fern-Inhabiting Genus Felisacus Distant (Insecta: Heteroptera: Miridae: Bryocorinae) Anna A. Namyatova And Gerasimos Cassis, Bulletin of the American Museum of Natural History 2016 (403), pp. 1-169 : 59-61

Felisacus bismarckensis , sp. nov.

Figures 4 , 10A , 11L, M , 14E , 17

DIAGNOSIS: Recognized by the following combination of characters: dark brown to black C-shaped marking on corium, extending toward R+M anteriorly and posteriorly, its anterior part not inclined posteriorly (fig. 4); head not swollen laterally behind eyes; vertex upraised; antennal segment I widened (as in Namyatova et al., 2016: fig. 8B); right paramere without outgrowth on inner angle (fig. 11L); and at least half of ductus seminis sclerotized, straight apically (fig. 10A).

DESCRIPTION: Male. Total length 3.1. COL- ORATION (fig. 4): Head: Mostly yellow to pale brown, buccula and clypeus brown apically. Eye reddish brown. Labium: Segments I–II brown, segment III pale brown, yellow apically, segment IV yellow. Antenna: Segment I reddish brown with yellow base; segment II brown, segments III–IV pale brown. Thorax: Anterior part yellow to pale brown, with anterior margin and marking near forecoxa brown; posterior part brown; mesoscutum and scutellum uniformly brown, scutellum sometimes with reddish apex; thoracic pleura and scent gland evaporative area brown. Hemelytron: Clavus opaque, uniformly brown; corium, embolium and cuneus mostly translucent, colorless; corium with C-shaped brown marking, reaching R+M anteriorly and posteriorly, anterior part of this marking not inclined posteriorly; embolium with margins and apex brown; cuneus yellow apically, with outer margin brown and inner margin colorless; membrane translucent, gradually changing color from pale brown anteriorly and whitish yellow posteriorly; membrane cell pale brown to brown. Legs: Forecoxa brown, middle and hind coxae yellow with pale brown to brown markings medially; fore- and middle femora yellow apically, sometimes with reddish or pale brown marking; hind femur yellow with yellow, pale brown or red apex and pale brown or red marking at apical half; tibiae yellow, red or pale brown basally; tarsi yellow to pale brown. Abdomen: Ventral side yellow, lateral side brown basally and reddish apically; dorsal surface brown. SURFACE AND VESTITURE: Corium smooth, with shallow, scarce punctation. Dorsum, antennal segment I and femora clothed with setae shorter than antennal segment II diameter; abdomen clothed with long erect setae. STRUCTURE AND MEASUREMENTS: Body ca. 4.0× as long as pronotum width. Head: Transverse depression delimiting occipital region present only dorsally, not extending laterally (Namyatova et al., 2016: fig. 6E), distance between depression and pronotum shorter than eye diameter; longitudinal sulcus on dorsal surface of head shorter than eye diameter; eye diameter slightly longer than distance between eye and pronotum; vertex ca. 2.1× as wide as eye; vertex upraised. Labium: Reaching posterior margin of metasternum; segments I and II shorter than width, combined subequal to half of segment III; dorsal surface of segment II not elongate posteriorly (as in Namyatova et al., 2016: fig. 6E); segment III as long as ventral side of head length; segment IV twice as long as segment III. Antenna: Segment I as long as head width, widened (as in Namyatova et al., 2016: fig. 8B), ca. 1.0× as long as head width, ca. 0.6× as long as pronotum width; segment II ca. 1.7× as long as head width, ca. 1.1× as long as pronotum width; segment III slightly shorter than segment II and ca. 1.5× as long as segment IV. Thorax: Anterior part of pronotum shorter than posterior part; collar delimited; posterior part of pronotum slightly upraised; posterior margin of pronotum straight or concave; pronotum ca. 1.3× as wide as long and ca. 1.6× as wide as head; mesoscutum slightly exposed or not exposed. Hemelytron: Area along inner margin of corium swollen; cuneus with inner margin straight (Namyatova et al., 2016: fig. 13F), outer margin of cuneus twice as long as base. Genitalia: Genital capsule (fig. 14E) ventral wall ca. 1.3× as long as dorsal wall, with posterior margin of ventral wall oval, slightly acute with apex placed almost medially, not curved dorsally, without toothlike outgrowth; sides of genital capsule not modified; margins of paramere sockets distinctly acute; distance between paramere sockets subequal to half of genital capsule width at base. Right paramere (fig. 11L) distinctly curved apically; apex slightly concave, medial part narrower than basal part, without setae, outer margin of medial part convex, inner margin concave, not widened; outer angle absent; inner angle present, rounded, without outgrowth, bearing setae; basal part slightly shorter than rest of paramere. Left paramere (fig. 11M) apical part slightly flattened, with toothlike outgrowth apically, without outgrowth dorsally; middle part widened dorsally, inner margin of middle part swollen, without setae and outgrowth. Aedeagus (general view as in Namyatova et al., 2016: fig. 22M) vesica without spicules; apical half of ductus seminis sclerotized, straight, secondary gonopore placed near phallotheca mouth in repose (fig. 10A).

Female. Total length 3.5–3.7. COLORATION (fig. 4): Head: Similar to male, but clypeus sometimes uniformly brown, eye dark brown. Labium: As in male. Antenna: Segment I brown to reddish brown with yellow base, segment II brown, segments III and IV pale brown to brown. Thorax: Similar to male; metapleuron sometimes pale brown with brown posterior margin. Abdomen: Yellow ventrally and brown dorsally and apically. STRUCTURE AND MEASUREMENTS: Structure as in male; body ca. 4.0–4.1× as long as pronotum width; vertex ca. 2.1–2.2× as wide as eye; antennal segment I ca. 1.0–1.1× as long as head width, ca. 0.6–0.7× as long as pronotum width; segment II ca. 1.7× as long as head width, ca. 1.0× as long as pronotum width; pronotum ca. 1.2–1.3× as wide as long and ca. 1.6–1.7× as wide as head. Genitalia (as in fig. 16A, B): Dorsal labiate plate very small and transparent, as wide as distance between apodemes of second valvulae, without striations or membranous ridge medially; semicircular sclerite and sclerotized rings absent; lateral oviducts placed in anterior part; spermathecal gland attached near anterior margin; dorsal labiate plate without distinct tubercles, without membranous lobe posteriorly.

DISTRIBUTION: Bismarck Archipelago (New Britain Is.) (fig. 17).

HOST PLANTS: Unknown.

ETYMOLOGY: The species is named after Bismarck Archipelago, where it was collected.

DISCUSSION: The genital capsule was not examined. The external morphology of Felisacus bismarckensis is similar to F. lindbergae , F. longiceps , F. magnificus , and F. zuparkoi (figs. 4–7), but those four species differ in having a flat vertex (as in Namyatova et al., 2016: fig. 6E), a distinct outgrowth on the inner angle of the right paramere (cf. fig. 11L with figs. 12M, Q, W, 13AD) and the ductus seminis is distinctly sickle shaped apically (cf. fig. 10A with 10F, H, J, O).

MATERIAL EXAMINED: Holotype: PAPUA NEW GUINEA: East New Britain Province: Gazelle Peninsula, Gaulim, 4.45 ° S 142.08333 ° E, 04 Nov 1962, R.W. Strandtmann, 13 (00043207) ( BPBM). Paratypes: PAPUA NEW GUINEA: East New Britain Province: Gazelle Peninsula, Gaulim, 4.45 ° S 142.08333 ° E, 04 Nov 1962, R.W. Strandtmann, 13 (00043208), 2♀ (00043209, 00043210), sex unknown (00043211) ( BPBM).

Figures

FIGURE 4. Habitus of Felisacus species.

FIGURE 10. A, C–L, O, P. Apical part of aedeagus of Felisacus species B, E, M. Vesica of Felisacus species. N. Aedeagus of F.webbi.

FIGURE 11. Parameres of Felisacus species.

FIGURE 14. Genital capsule of Felisacus species.

FIGURE 17. Distribution of Felisacus species.