Felisacus insularis Miyamoto, 1965

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 : 90-92

Felisacus insularis Miyamoto

Figures 5 , 8L , 12C, D , 14P , 18 Felisacus insularis Miyamoto, 1965: 159 (original description).

DIAGNOSIS: Recognized by the following combination of characters: mostly yellow coloration of head and pronotum, head, collar, and inner part of clavus without brown markings; cuneus often at least partly yellow or red (fig. 5), cylindrical antennal segment I (as in Namyatova et al., 2016: fig. 8A), transverse depression delimiting occipital region on head extending laterally, vertex upraised (as in Namyatova et al., 2016: fig. 6D); body length in male 3.7–4.2 and in female 3.8–4.3; vertex in male ca. 1.5–1.9× as long as eye diameter; labium reaching middle of mesosternum; ventral wall of genital capsule ca. 1.7× as long as dorsal wall (fig. 14P); medial part of right paramere twice as wide as basal part, shorter than basal and apical parts combined, its outer margin straight (fig. 12C); vesica with five spicules, including spicules B and F and large serrate spicule (fig. 8K).

REDESCRIPTION: Male. Total length 3.7–4.2. COLORATION (fig. 5): Head: Mostly whitish yellow to yellow; frons, mandibular plate and tubercle around antennal fossa often with reddish tinge or small markings. Eye dark brown, often reddish at margins. Labium: Yellow, segments I–II sometimes whitish yellow, segment II with pale brown or reddish stripe ventrally. Antenna: Segment I yellow to pale brown, whitish yellow basally, sometimes with reddish tinge; segment II reddish brown, darker than segment I, segment III–IV brown to dark brown, darker than segment II. Thorax: Pronotum whitish yellow to yellow, sometimes with reddish stripe laterally, anterior margin often pale brown, sometimes humeral angle pale brown; thoracic pleura whitish yellow to yellow, scent gland evaporative area whitish yellow often yellow apically, sometimes yellow with pale brown apex; mesoscutum and scutellum whitish yellow to yellow, punctures between them often pale brown. Hemelytron: Mostly translucent, colorless; inner part of clavus whitish yellow to yellow, with yellow or pale brown margins, sometimes opaque; corium with marking along inner margin yellow to pale brown, narrow and short; embolium sometimes yellow, with brown margins, often reddish or reddish brown apically; cuneus yellow to reddish yellow, sometimes only apex yellow or reddish or cuneus with yellow tinge only; membrane cell yellow. Legs: Coxae whitish yellow to yellow; femora whitish yellow basally and yellow apically, rarely mostly pale brown, often with reddish tinge apically; tibiae yellow to pale brown, often reddish basally, rarely mostly reddish; tarsi yellow to pale brown. Abdomen: Ventral and lateral sides yellow, segment IX pale brown, dorsal surface reddish, rarely abdomen uniformly yellow. SURFACE AND VESTI- TURE: Corium smooth, with shallow and scarce punctures. Dorsum with suberect setae slightly longer than antennal segment II diameter; antennal segment I and femora with suberect setae subequal to or shorter than antennal segment II diameter; abdomen clothed with suberect mostly short simple setae. STRUCTURE AND MEA- SUREMENTS: Body ca. 3.8–4.3× as long as pronotum width. Head: Depression delimiting occipital region present dorsally and laterally (as in Namyatova et al., 2016: fig. 4E); distance between depression and pronotum distinctly shorter than eye diameter; longitudinal sulcus on dorsal surface longer than eye diameter; distance from eye to pronotum slightly longer than eye diameter, not swollen at sides (Namyatova et al., 2016: fig. 4E); vertex ca. 1.5–1.9× as wide as eye, upraised (as in Namyatova et al., 2016: fig. 6D). Labium: Reaching middle of mesosternum; segments I and II strongly reduced, combined subequal to half of segment III; segment I slightly shorter than wide (as in Namyatova et al., 2016: figs. 6D, 9C); segment II slightly longer than wide, elongate dorsally; segment III as long as ventral side of head length; segment IV ca. 1.5× as long as segment III. Antenna: Segment I cylindrical (as in Namyatova et al., 2016: fig. 8A), ca. 1.2–1.8× as long as head width, ca. 0.8–1.1× as long as pronotum width; segment II ca. 1.5–2.2× as long as head width, ca. 0.9–1.4× as long as pronotum width; segments III slightly longer than segment II; segment IV ca. 0.3× as long as segment III. Thorax: Posterior part slightly upraised; collar delimited posterior margin slightly concave; pronotum ca. 1.2–1.4× as wide as long and ca. 1.5–1.7× as wide as head; mesoscutum exposed. Hemelytron: Area along inner margin of corium flat; inner margin of cuneus convex, outer margin of cuneus ca. 2.5–3× as long as base. Abdomen: Genital capsule rotated left at right angle relative to rest of abdomen. Genitalia: Genital capsule (fig. 14P) twice as long as wide, ventral wall ca. 1.5× as long as dorsal wall, its posterior margin smooth, semioval, without outgrowth(s), not curved; sides of genital capsule not modified; paramere socket more or less rounded; distance between paramere sockets ca. 0.7× as long as genital capsule width at base; right angle of left paramere socket not projecting. Right paramere (fig. 12C) distinctly curved in apical half; apex straight posteriorly; medial part almost twice as wide as basal part, bearing setae, with outer margin straight and inner margin widened; outer angle distinct, inner angle rounded, without setae; basal part of paramere ca. 0.15–0.2× as long as rest of paramere. Left paramere (fig. 12D) L-shaped; apical part not flattened, with toothlike outgrowth on posterior side medially (as in fig. 11G) and without outgrowth on dorsal surface; middle part widened, without swelling or outgrowth; setae only on middle part near outer margin. Aedeagus conjunctiva weakly sclerotized; secondary gonopore placed at base of vesica in repose; sclerotization of ductus seminis around secondary gonopore shorter than wide; vesica with five spicules, including spicules B and F and large serrate spicule (fig. 8L).

Female. Total length 3.8–4.3. COLORATION (fig. 5): Similar to male, abdomen: uniformly yellow, sometimes with dorsal surface pale brown. SURFACE AND VESTITURE: As in male. STRUCTURE AND MEASUREMENTS: Structure as in male; body ca. 4.0–4.6× as long as pro- notum width; vertex ca. 1.5–1.9× as wide as eye; antennal segment I ca. 1.3–1.4× as long as head width, ca. 0.7–0.9× as long as pronotum width; segment II ca. 1.7–1.9× as long as head width, ca. 1.0–1.2× as long as pronotum width; pronotum ca. 1.1–1.5× as wide as long and ca. 1.5–1.8× as wide as head. Genitalia (as in Namyatova et al., 2016: fig. 23F, G): Dorsal labiate plate wider than distance between apodemes of second valvula; mostly smooth, without distinct striations or longitudinal membranous ridge, with semicircular sclerites and distinct sclerotized rings laterally; lateral oviducts placed almost medially, very close to each other, spermathecal gland placed between lateral oviducts; dorsal labiate plate with distinct tubercles, without membranous lobe medially.

DISTRIBUTION: China, Japan, Thailand, Vietnam (fig. 18).

HOST PLANTS: Sweeping from Pteridium sp. ( Miyamoto, 1965) .

DISCUSSION: Miyamoto (1965) described F. insularis based on the basis of a male holotype and a number of male and female paratypes. According to information given in his description, the holotype and some paratypes are preserved in the Entomological Laboratory, Kyushu University, and two paratypes are preserved in the BPBM. We did not find the paratypes of F. insularis in BPBM, and we did not acquire information about the types of this species from Kyushu University.

We have examined a number of specimens from southeast Asia belonging to a single species and more or less fitting the description of Miyamoto, aside from minor variation in coloration. These specimens also have a similar right paramere, with a broad medial region, as depicted in Miyamoto (1965: fig. 30), and we consider them as conspecific to F. insularis .

Felisacus insularis is similar to F. albus and F. indicus (figs. 4, 5) in external view and the medial part of the right paramere, which is twice as wide as the basal part (cf. fig. 12C with figs. 11A, 12A). Felisacus albus differs by the mostly whitish yellow head and collar, the genital capsule is almost as long as wide (fig. 14A), and the presence of

seven vesical spicules (fig. 8A). Felisacus indicus can be separated by the vertex in males being ca. 1.2× as wide as the eye diameter, the genital capsule is almost as long as wide (fig. 14O), the humeral angles of the pronotum are brown, and the vesica is without serrate spicules (fig. 8L).

MATERIAL EXAMINED: CHINA: Guangdong: Yao’anxiang, Lianzhou, Qingyuan , 25.01826 ° N 112.40858 ° E, 20 Oct 1962, Hanhua Cheng and Leyi Zheng , 13 (00018484) ( NKMU). Hainan Prov.: Jianfeng Mt, 18.72 ° N 108.88 ° E, 08 May 1964, Unknown, 13 (00018482) ( NKMU) ; Apr 1980, Unknown, 13 (00017887), 2♀ (00018480, 00018481) ( NKMU). Yunnan: [Man Xue], 06 Jun 1958, Unknown, 1♀ (00018483) ( IOZ). JAPAN: Kyushu (Island): Okinawa Pref.: Ishigaki I., Kara-yama , 14 Mar 1964, C.M. Yoshimoto and J. Harrell, 2♀ (00018486, 00018479) ( BPBM). Okinawa: Ishigaki Is., Ryukyu Islands , 24.4 ° N 124.2 ° E, Oct 1951, R.M. Bohart, 13 (00018477) ( AM) ; 13 Oct 1999, Belokobylskij, 3♀ (00271508, 00271507), 23 (00271509, 00271508) ( ZISP). THAILAND: Chiang Mai Province: Doi Suthep , 18.81277 ° N 98.89361 ° E, 900 m, 14 Nov 1957, J.L. Gressitt, 13 (00017875) ( AM). VIETNAM: Gia Lai: 20 km N of Pleiku, 14.15162 ° N 107.94731 ° E, 650 m, 09 May 1960, L.W. Quate, 1 sex unknown (00017866), 13 (00017874) ( AM). Ha Noi: 70 km NWW Ha Noi BaVi, 21.087 ° N 105.302 ° E, 22 Nov 1990, Belokobylskij, 13 (00018478) ( AM) .

Figures

FIGURE 5. Habitus of Felisacus species.

FIGURE 8. Vesical spicules of Felisacus species.

FIGURE 12. Parameres of Felisacus species.

FIGURE 14. Genital capsule of Felisacus species.

FIGURE 18. Distribution of Felisacus species.