Felisacus lindbergae, 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 : 103-104

Felisacus lindbergae , sp. nov.

Figures 5 , 10F , 12M, N , 14T , 16E , 19 DIAGNOSIS: Recognized by the following combination of characters: antennal segment II brown, cuneus colorless, sometimes with brown tinge apically; femora with marking in apical half brown to dark brown; marking on corium dark brown, C-shaped, its anterior part reaching or almost reaching R+M and only slightly inclined; antennal segment I widened (as in Namyatova and Cassis, in press: fig. 8B), ventral wall of genital capsule with tooth posteriorly (fig. 14T); right paramere sickle shaped with inner angle bearing straight outgrowth (fig. 12M); left paramere with tooth apically and outgrowth on dorsal surface, but without outgrowth on inner margin (fig. 12N); half of ductus seminis sclerotized, sickle shaped apically; vesica without sclerite (fig. 10F). DESCRIPTION: Male. Total length 3.4–4.1. COLORATION (fig. 5): Head: Mostly yellow to pale brown, dorsal surface sometimes with brown marking near eye, longitudinal sulcus sometimes brown, darker than dorsal surface, anterior side and clypeus basally sometimes yellow, paler than other sides, clypeus apically and buccula brown. Eye dark brown with reddish tinge. Labium: Segments I–II dark brown, segment III–IV yellow to brown, paler than segment II, segment IV sometimes darker than segment III. Antenna: Segments I–II brown, segments III–IV yellow to pale brown. Thorax: Anterior part of pronotum mostly yellow to pale brown, often brown medially, anterior margin brown, posterior part of pronotum uniformly brown; scutellum and mesoscutum brown to dark brown; thoracic pleura brown to dark brown; scent gland evaporative area uniformly whitish yellow. Hemelytron: Clavus opaque brown to dark brown; corium and embolium translucent, colorless; corium with C-shaped dark brown marking, its anterior part of this marking reaching or almost reaching R+M vein; posterior part of C-shaped marking reaching costal margin; embolium with brown outer margin and colorless inner margin and dark brown apex; cuneus translucent, colorless, with brown margins and apex sometimes with brown tinge; membrane translucent, gradually changing color from brown anteriorly and pale brown posteriorly, sometimes membrane pale brown anteriorly and colorless posteriorly; cell brown. Legs: Coxae whitish yellow, femora whitish yellow basally and yellow apically with apex and marking in apical half brown to dark brown, sometimes marking in apical half very pale; foretibia mostly brown, whitish yellow to yellow apically, sometimes brown apically and yellow apically; middle and hind tibiae brown basally and whitish yellow apically; tarsi mostly whitish yellow, sometimes segments II and III of fore- and middle tarsi pale brown to brown. Abdomen: Whitish yellow to yellow with brown dorsum. SURFACE AND VESTITURE: Corium smooth, with shallow and scarce punctation. Dorsum and forefemora with setae subequal to or longer than antennal segment II diameter; antennal segment I, middle and hind femora clothed with suberect setae mostly shorter than antennal segment II diameter; abdomen clothed with short erect setae. STRUCTURE AND MEASUREMENTS: Body ca. 4.1–4.5× as long as pronotum width. Head: Depression, delimiting occipital region, present only dorsally; distance between depression and pronotum distinctly longer than eye diameter; longitudinal sulcus on dorsal surface of head shorter than eye diameter; distance from eye to pronotum distinctly longer than eye diameter, not swollen laterally; vertex ca. 1.4–1.6× as wide as eye, flat (Namyatova et al., 2016: fig. 6E). Labium: Almost reaching posterior margin of prosternum, but not surpassing it; segments I and II longer than wide, each of them subequal to half of segment III; dorsal surface of segment II not elongate posteriorly (as in Namyatova et al., 2016: fig. 6E); segment III distinctly shorter than ventral side of head; segment IV ca. 1.5× as long as segment III. Antenna: Segment I swollen in basal portion (as in Namyatova et al., 2016: fig. 8B), ca. 1.2–1.3× as long as head width, ca. 0.8–0.9× as long as pronotum width; segment II ca. 1.5–1.8× as long as head width, ca. 1.1–1.3× as long as pronotum width; segment III slightly longer than segment II and twice as long as segment IV. Thorax: Anterior part of pronotum shorter than posterior part; collar delimited; posterior part slightly upraised; posterior margin of pronotum straight or concave; pronotum ca. 1.0–1.3× as wide as long and ca. 1.3–1.5× as wide as head; mesoscutum usually exposed, sometimes not exposed. Hemelytron: Area along inner margin of corium swollen; inner margin of cuneus straight (as in Namyatova et al., 2016: fig. 13F), outer margin of cuneus twice as long as its width at base. Abdomen: Genital capsule rotated left at small angle relative to rest of abdomen. Genitalia: Genital capsule (fig. 14T) ca. 1.5× as long as wide; ventral wall ca. 1.5× as long as dorsal wall, with posterior margin of ventral wall truncate, not curved dorsally, with small toothlike outgrowth from left side and with right side folded; left side of genital capsule not widened; paramere sockets distinctly angulate; distance between paramere sockets subequal to half of width of genital capsule base at base. Right paramere (fig. 12M) sickle shaped; apex straight posteriorly; medial part narrower than basal part, without setae, outer margin of medial part convex and inner margin concave, without swelling; outer angle absent; inner angle present, with straight outgrowth, bearing setae; basal part of paramere ca. 0.7× as long as rest of paramere. Left paramere (fig. 12N) curved medially; apical part not flattened, with toothlike outgrowth on posterior side apically and with outgrowth on dorsal surface; inner margin of paramere slightly swollen dorsally, bearing setae. Aedeagus (general view as in Namyatova et al., 2016: fig. 22M) vesica without spicules; apical half of ductus seminis sclerotized, secondary gonopore placed near phallotheca mouth in repose; ductus seminis hooked apically (fig. 10F).

Female. Total length 3.7–4.4. COLORATION (fig. 5): Similar to male, antennal segments III– IV yellow, paler than segment II, sometimes segment IV pale brown, darker than segment III. SURFACE AND VESTITURE: As in male. STRUCTURE AND MEASUREMENTS: Struc- ture as in male; body ca. 4.1–4.3× as long as pronotum width; vertex ca. 1.5–1.8× as wide as eye diameter; antennal segment I ca. 1.1–1.2× as long as head width, ca. 0.7–0.8× as long as pronotum width; segment II ca. 1.5–1.8× as long as head width, ca. 1.0–1.1× as long as pronotum width; pronotum ca. 1.1–1.2× as wide as long and ca. 1.5–1.7× as wide as head. Genitalia: Dorsal labiate plate very small and transparent, as wide as distance with apodemes of second valvulae, without striations or membranous ridge medially; semicircular sclerite and sclerotized rings absent; lateral oviducts placed in near posterior margin very close to each; spermathecal gland attached near anterior margin (fig. 16E); dorsal labiate plate without distinct tubercles, without membranous lobe posteriorly (as in fig. 16B).

DISTRIBUTION: Solomon Is. (fig. 19)

HOST PLANTS: Freycinetia sp. (Pandanaceae) .

ETYMOLOGY: The species is named after Gunvi Lindberg, the curatorial assistant in Swedish Museum of Natural History (Stockholm) for the loan of type specimens.

DISCUSSION: Felisacus lindbergae is most similar to F. longiceps , F. magnificus , and F. zuparkoi in coloration and structure (figs. 5–7). These three species differ by the labium reaching the posterior margin of the mesosternum, the outgrowth on the inner angle of the right paramere is curved (figs. 12M, 12Q, W, 13AD), and the medial part of the left paramere has an outgrowth (cf. figs. 12N, 12R, X, 13AE). Felisacus magnificus can also be separated by the right paramere straight (fig. 12W) and the apical part of the left paramere broad (fig. 12X). Felisacus zuparkoi differs from the above species by the femora without markings apically and the presence of a vesical spicule (fig. 10P).

MATERIAL EXAMINED: Holotype: SOLOMON

ISLANDS: New Georgia Islands: Gizo, Gizo Is., 8.1 ° S 156.85 ° E, 100 m, Nov 1975, N.L.H. Krauss, 13 (00043172) ( BPBM). Paratypes: SOLOMON

ISLANDS: Malaita: Auki, 8.767 ° S 160.7 ° E, 100 m, Feb 1985, N.L.H. Krauss, 23 (00043164, 00043165) (BPBM). New Georgia Islands: Gizo, Gizo Is., 8.1 ° S 156.85 ° E, 100 m, Nov 1975, N.L.H. Krauss, 83 (00043166–00043171, 00043173, 00043174), 2♀ (00043175, 00043176) (BPBM). Western Province: New Georgia Islands: Munda, New Georgia Is., 8.31666 ° S 157.25 ° E, 50 m, Nov 1980, N.L.H. Krauss, 1♀ (00043178) (BPBM). New Georgia Island, Munda, 8.31666 ° S 157.25 ° E, 20 Jul 1959, J.L. Gressitt, Freycinetia sp. (Pandaceae) , 13 (00043163) (BPBM). Gizo, Kolombangara Is., Gizo, 7.93799 ° S 157.09339 ° E, 70 m, Dec 1980, N.L.H. Krauss, 2♀ (00043177–00043179) (BPBM).

Figures

FIGURE 5. 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 12. Parameres of Felisacus species.

FIGURE 14. Genital capsule of Felisacus species.

FIGURE 16. A, C, E, G, I, K, L, N. Dorsal labiate plate of bursa copulatrix of Felisacus species B, D, F, H, J, M, O. Posterior wall of bursa copulatrix of Felisacus species The small scale is for F. curvatus and F. wangae, the large scale for all others.

FIGURE 19. Distribution of Felisacus species.