Felisacus bradi, 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 : 61-63

Felisacus bradi , sp. nov.

Figures 4 , 10B , 11N, O , 14F , 16C, D , 21

DIAGNOSIS: Recognized by the following combination of characters: antennal segment I slightly widened; head and pronotum whitish yellow to yellow, without brown markings (fig. 4); antennal segment I mostly brown; dorsal surface of labial segment II elongate posteriorly (as in Namyatova et al., 2016: fig. 6D); labium reaching abdominal segment VII; ventral wall of genital capsule not curved apically (fig. 14F); left paramere widened with large outgrowth posteriorly (fig. 11O); sclerotization of ductus seminis around secondary gonopore elongate, but distinctly shorter than remaining part of ductus seminis, dorsal wall of the sclerotized portion of ductus seminis longer than ventral wall; vesica with a number of small toothshaped sclerites apically and large sclerotized areas (fig. 10B).

DESCRIPTION: Male. Total length 4.3. COL- ORATION (fig. 4): Head: Mostly whitish yellow to yellow, dorsal and lateral sides pale brown behind eye, longitudinal stripe pale brown, buccula, frons pale brown with reddish tinge near clypeus base, clypeus mostly brown, whitish yellow only basally. Eye dark brown. Labium: Segments I–II whitish yellow, segment III yellow, segment IV pale brown basally and gradually darkened to brown apically. Antenna: Brown, segment I whitish yellow basally. Thorax: Anterior part of pronotum whitish yellow, posterior part of pronotum yellow; mesoscutum and scutellum yellow with reddish tinge; thoracic pleura and scent gland evaporative area whitish yellow. Hemelytron: Mostly translucent, whitish yellow; clavus with yellow tinge and brown depression delimiting part of clavus; area along inner margin of corium brown, narrow and short, not extending toward R+M; embolium with outer margin partly dark brown; membrane with pale brown tinge; membrane cell pale brown. Legs: Coxae whitish yellow; femora whitish yellow basally and yellow to pale brown apically; tibiae yellow to pale brown; tarsi brown. Abdomen: Whitish yellow. SURFACE AND VESTITURE: Corium smooth, with shallow and dense punctures. Dorsum, antennal segment I and femora clothed with suberect setae shorter than antennal segment II diameter; abdomen with suberect mostly short simple setae. STRUCTURE AND MEASUREMENTS: Body ca. 4.3× as long as pronotum width. Head: Depression delimiting occipital region present only dorsally, not extending laterally (Namyatova et al., 2016: fig. 6E); distance between depression and pronotum as long as eye diameter; longitudinal sulcus on dorsal surface shorter than eye; distance from eye to pronotum slightly shorter than eye diameter, not swollen dorsally; vertex ca. 1.8× as wide as eye; vertex slightly raised; buccula ca. 0.2– 0.25× as long as clypeus. Labium: Reaching abdominal segment VII; segments I and II reduced, subequal to half of segment III; segment I shorter than wide; segment II slightly longer than wide, its dorsal surface elongate posteriorly (as in Namyatova et al., 2016: fig. 6D); segment III slightly longer than length of head ventrally; segment IV ca. 0.3× as long as segment III. Antenna: Segment I slightly longer than head width, slightly widened medially (Namyatova et al., 2016: fig. 8B), ca. 1.3× as long as head width, ca. 0.8× as long as pronotum width; segment II ca. 2.0× as long as head width, ca. 1.2× as long as pronotum width; segments III shorter than segment II; segment IV ca. 0.25× as long as antennal segment III. Thorax: Anterior part of pronotum distinctly shorter than posterior part; posterior part slightly upraised; posterior margin concave, pronotum ca. 1.3× as wide as long and ca. 1.6× as wide as head; mesoscutum exposed. Hemelytron: Area along inner margin of corium almost flat; inner margin of corium convex (as in Namyatova et al., 2016: fig. 13E), outer margin of corium ca. 3× as long as base. Abdomen: Genital capsule rotated left at right angle relative to rest of abdomen. Genitalia: Genital capsule (fig. 14F) twice as long as wide; ventral wall ca. 1.3× as long as dorsal wall, its posterior margin smooth, semioval, without outgrowth, apex slightly inclined to left-hand side, rounded, not curved dorsally; sides of genital capsule not modified; margins of paramere sockets angulate; distance between paramere sockets ca. 0.3× as long as width of genital capsule at base. Right paramere (fig. 11N) curved in apical part, but apical part only weakly delimited; apex straight posteriorly; medial part only slightly wider than basal part, its outer margin straight, inner margin slightly widened, bearing setae; outer angle present, very shallow; inner angle rounded, not bearing setae or outgrowth; basal part ca. 0.25–0.3× as long as rest of paramere. Left paramere (fig. 11O) L-shaped, widened; apical part not flattened, with large outgrowth on posterior side medially and without outgrowth on dorsal surface; middle part widened, without swelling or outgrowth(s); setae present only posteriorly. Aedeagus conjunctiva sclerotized only basally, secondary gonopore placed at base of vesica; sclerotized part of ductus seminis around secondary gonopore elongate, but distinctly shorter than rest of ductus seminis; dorsal wall of sclerotized part of ductus seminis longer than its ventral wall; vesica with number of small toothlike sclerites and two large sclerites (fig. 10B).

Female. Total length 4.9. COLORATION (fig. 4): Head: Mostly yellow to pale brown, ventral side yellow, apical part of clypeus brown; eyes dark brown. Labium: As in male. Antennae. Brown to dark brown, segment I yellow basally. Thorax: Anterior part of pronotum whitish yellow, posterior part of pronotum mostly pale brown; mesoscutum and scutellum as in male; mesopleuron yellow; metapleuron and scent gland evaporative area whitish yellow with greenish tinge. Legs: Similar to male, but tarsal segments I and II of fore- and middle tibia pale brown. Hemelytron: As in male. Abdomen: Whitish yellow with green tinge. SURFACE AND

VESTITURE: As in male. STRUCTURE AND

MEASUREMENTS: Structure similar to male, but labium reaching abdominal segment VIII; body ca. 4.2× as long as pronotum width; vertex ca. 2.0× as wide as eye; antennal segment I ca. 1.0× as long as head width, ca. 0.6× as long as pronotum width; segment II ca. 1.7× as long as width of head, ca. 1.0× as long as width of pronotum; pronotum ca. 1.4× as wide as long and ca. 1.6× as wide as head. Genitalia (fig. 16C, D): Dorsal labiate plate wider than distance between apodemes of second valvula; with striated longitudinal membranous ridge, with semicircular sclerites and distinct sclerotized rings laterally; lateral oviducts placed almost medially, shifted posteriorly, very close to each other, spermathecal gland placed between lateral oviducts; dorsal labiate plate with distinct tubercles anteriorly, without membranous lobe medially.

DISTRIBUTION: Tahiti (fig. 21).

HOST PLANTS: Unknown.

ETYMOLOGY: This species is named after Brad Balukjian, who provided material for this study.

DISCUSSION: Antennal segment IV is lost in the male. Felisacus bradi is most similar to F. auritulus , F. usingeri , and F. ovalau in the combination of the broad antennal segment I and the dorsal surface of labial segment II is elongate posteriorly (as in Namyatova et al., 2016: fig. 6D). Felisacus usingeri is known from the Philip- pines and differs by antennal segment I yellow, brown apically, and the labium reaching the middle of the mesosternum. Felisacus ovalau is known from Fiji and differs by the antennal segment I yellow with a reddish tinge, the pronotum with pair of brown markings near the humeral angles, the left paramere is broad with three rounded outgrowths (fig. 13F), and sclerotization of the ductus seminis at the secondary gonopore is broad and almost as long as wide (fig. 9G). Felisacus auritulus is known from the Seychelles and differs by antennal segment I being distinctly broad and the labium reaches the middle of the mesosternum.

MATERIAL EXAMINED: Holotype: FRENCH

POLYNESIA: Society Islands: Moorea Is.: Uufau Pass, 17.536 ° S 149.8697 ° W, 420 m, 15 Mar 2009, Peter Oboyski, 13 (00399753) ( UCB). Paratype: FRENCH POLYNESIA: Society Islands: Moorea Is.: ridge between Mt Mouaroa and Mt Ruahite, near Mt Mouaroa overlook, 17.54794 ° S 149.84955 ° W, 488 m, 11 Dec 2008, C.P. Ewing, 1♀ (00399754) ( UCB).

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 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 21. Distribution of F. bradi.