Felisacus philippinensis Hsiao, 1944

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 : 135-137

Felisacus philippinensis Hsiao

Figures 6 , 10K , 13G, H , 15G, 16G. H , 20

Felisacus philippinensis Hsiao, 1944: 386 (original description).

DIAGNOSIS: Recognized by the following combination of characters: dorsal side of head and pronotum mostly yellow; marking along inner margin of corium yellow to dark brown, not continuing toward R+M (fig. 6); transverse depression on head not continuing laterally; antennal segment I widened (as in Namyatova and Cassis, in press: fig. 8B), red; labium slightly surpassing posterior margin of prosternum; inner margin of cuneus straight (as in Namyatova et al., 2016: fig. 13F); genital capsule widened from left-hand side dorsally, its ventral wall not curved apically (fig. 15G); right paramere sickle shaped, with outer angle indistinct and inner angle distinct (fig. 13G); apical half of ductus seminis sclerotized, hooked apically (fig. 15G).

REDESCRIPTION: Male. Total length 3.9–4.1. COLORATION (fig. 6): Head: Mostly yellow, often with pale brown or red markings; tubercles around antennal fossa whitish yellow; clypeus reddish to brown with yellow base; mandibular and maxillary plates yellow, buccula often yellow, brown to dark brown anteriorly, rarely uniformly yellow or brown to dark brown. Eye dark brown with reddish tinge. Labium: Segments I–II pale brown to brown, segments III–IV pale brown to brown, segment III often paler than segment IV. Antenna: Segment I reddish, sometimes reddish brown; segment II reddish brown, segments III– IV brown to dark brown. Thorax: Pronotum mostly yellow, anterior margin often pale brown to brown; collar and calli often with reddish tinge; posterior margin often pale brown with pair of brown to brown markings near humeral angles, sometimes uniformly yellow to brown; scutellum and mesoscutum yellow to pale brown, sometimes with reddish tinge; thoracic pleura usually pale brown, sometimes mostly brown to dark brown; scent gland evaporative area uniformly whitish yellow to yellow. Hemelytron: Mostly translucent; clavus sometimes opaque, its inner part pale brown to dark brown, rarely yellow; outer part mostly pale brown to dark brown, rarely colorless or yellow, often paler than inner part; corium with yellow tinge; marking along inner margin of corium yellow to dark brown; embolium colorless, with yellow tinge and yellow to pale brown margins; cuneus colorless, with yellow tinge, outer margin yellow and inner margin whitish; membrane colorless, sometimes pale brown to brown medially; membrane cell pale brown to dark brown. Legs: Often uniformly yellow, sometimes femora apically and tibiae basally red, sometimes middle tibia and fore- and middle tarsal segments II–III pale brown to brown. Abdomen: Dorsal and lateral sides mostly yellow, often with brown markings and stripe, genital capsule sometimes with reddish tinge, dorsal surface red or brown. SURFACE AND VESTI- TURE: Corium with shallow punctation. Dorsum and femora with setae subequal to or slightly longer than antennal segment II diameter; antennal segment I clothed with adpressed setae shorter than antennal segment II diameter; abdomen clothed with erect setae of different length. STRUCTURE AND MEASUREMENTS: Body ca. 4.4–4.6× as long as pronotum width. Head: Depression delimiting occipital region present only dorsally; distance between depression and pronotum as long as eye diameter, not swollen laterally; longitudinal sulcus on dorsal surface of head shorter than eye diameter; distance from eye to pronotum longer than eye diameter, not swollen laterally; vertex ca. 1.4– 1.6× as wide as eye; upraised. Labium: Slightly surpassing prosternum; segments I and II longer than wide, II combined as long as 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 widened basally and medially (as in Namyatova et al., 2016: fig. 8B), ca. 1.3–1.6× as long as head width, ca. 0.9× as long as pronotum width; segment II ca. 1.8–2.2× as long as head width, ca. 1.2–1.3× as long as pronotum width; antennal segment III slightly longer than segment II, segment IV only slightly shorter than segment III. Thorax: Anterior part of pronotum distinctly shorter than posterior part; collar distinct; posterior part slightly upraised; posterior margin of pronotum straight or concave; pronotum ca. 1.1–1.2× as wide as long and ca. 1.4–1.9× as wide as head; mesoscu- tum 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 width at base. Abdomen: Genital capsule rotated left at right angle relative to the rest of abdomen. Genitalia: Genital capsule (fig. 15G) ca. 1.5× as long as wide; ventral wall ca. 1.5× as long as dorsal wall, with posterior margin smooth, without outgrowth(s), not curved; right side of genital capsule not curved, left side widened; paramere sockets angulate; distance between paramere sockets ca. ca. 0.25–0.3 as long as width of genital capsule at base. Right paramere (fig. 13G) distinctly curved apically; apex concave posteriorly, medial part narrower than basal part, without setae, with outer margin convex and inner margin widened; outer angle indistinct, rounded, inner angle distinct, widened, bearing setae; basal part of paramere subequal to half of rest of paramere. Left paramere (fig. 13H) irregularly shaped; apical part of paramere flattened and widened, with four outgrowths medially of different shape and length; setae placed on middle part at inner margin. Aedeagus conjunctiva membranous; vesica without spicules; apical half of ductus seminis sclerotized, hooked apically, secondary gonopore placed near phallotheca mouth in repose (fig. 10K).

Female. Total length 4.3–4.9. COLORATION (fig. 6): Head: Similar to male, but dorsal surface sometimes mostly reddish brown. Labium: Similar to male, segment III sometimes pale brown to brown, of the same color as segments I–II. Antenna: As in male. Thorax: Similar to male, but pronotum yellow to pale brown with brown to dark brown lateral sides, scutellum yellow to brown, sometimes with reddish tinge. Hemelytron: Similar to male. Legs: Similar to male, but sometimes coxae and femora basally whitish yellow and tibiae yellow basally and whitish yellow apically. Abdomen: Ventral and lateral sides mostly yellow, often with brown stripes and markings, segment IX often brown or reddish brown, dorsal surface brown or reddish. SURFACE AND VESTITURE: As in male. STRUCTURE AND MEASURE-

MENTS: Structure as in male; body ca. 4.5–4.7× as long as pronotum width; vertex ca. 1.4–1.6× as wide as eye; antennal segment I ca. 1.3–1.5× as long as head width, ca. 0.8× as long as pronotum width; segment II ca. 1.9–2.1× as long as head width, ca. 1.1–1.2× as long as pronotum width; pronotum ca. 1.1–1.2× as wide as long and ca. 1.8–1.9× as head wide. Genitalia (figs. 16G, H): 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 posterior part, close to each other, far from lateral margins of dorsal labiate plate; spermathecal gland attached near anterior margin; dorsal labiate plate without distinct tubercles, with triangular membranous lobe posteriorly.

DISTRIBUTION: Philippines (Luzon, Mindanao, Negros) (fig. 20). Only females are known from Negros.

HOST PLANTS: Unknown.

DISCUSSION: Hsiao (1944) described F. philippinensis , and the types are preserved in the USNM and were examined but not dissected. We have specimens which fit the description of Hsiao and we treated them as conspecific with F. philippinensis .

Felisacus philippinensis is similar to F. luzonus externally (figs. 5, 6), but the latter species differs by the posterior part of the marking along the corium extends, to R+M, the labium reaches the middle of the mesosternum, the genital capsule is not broad on the right-hand side (fig. 14X) and the ductus seminis is straight apically (fig. 10I).

MATERIAL EXAMINED: PHILIPPINES: Camarines Sur: Iriga Mt, 13.45416 ° N 123.45055 ° E, 26 Apr 1962, H.M. Torrevillas, 23 (00043115, 00043116) ( BPBM). Iriga Mt, 13.45416 ° N 123.45055 ° E, 550 m, 24 Apr 1962, H.M. Torrevillas, 13 (00043114), 2♀ (00043119, 00043120) ( BPBM). Isarog Mt, 20 km E of Naga, 13.65805 ° N 123.37305 ° E, 550 m, 06 Apr 1963, H.M. Torrevillas, 1♀ (00043112) ( BPBM). Isarog Mt, Pili, 13.65805 ° N 123.37305 ° E, 850 m, 12 Apr 1965, L.M. Torrevillas, 83 (00043097–00043104), 2♀ (00043105, 00043107) ( BPBM). Isarog Mt, Pili, 13.65805 ° N 123.37305 ° E, 600 m, 20 Sep 1964, M.D. Delfinado, 2♀ (00043109, 00043110) ( BPBM). Isarog Mt, Pili, 13.65805 ° N 123.37305 ° E, 500 m, 04 Apr 1963, H.M. Torrevillas, 13 (00043113) ( BPBM). Isarog Mt, Pili, 13.65805 ° N 123.37305 ° E, 100 m, 20 Apr 1965, H.M. Torrevillas, 1♀ (00043108) ( BPBM). Mt. Isarog , Pili, 13.70805 ° N 123.75083 ° E, 800 m, 27 Apr 1965, H.M. Torrevillas, 1♀ (00043111) ( BPBM). Davao del Sur: Galog Riv., Mt. Apo , Mindanao, 1829 m, 07 Sep 1700, C.S. Clagg, 13 (00045807) ( BPBM). Mindanao: Matibog Creek , Bayugan, Esperanza, Agusan, 8.91716 ° N 125.78854 ° E, 300 m, 07 Nov 1959, C.M. Yoshimoto, 13 (00043128) ( BPBM). Negros Oriental: Balinsasayao Lake , 9.35305 ° N 123.17916 ° E, 01 Oct 1959 – 07 Oct 1959, L.W. Quate, 2♀ (00043123, 00043125) ( BPBM) ; 01 Oct 1959 – 07 Oct 1959, C.M. Yoshimoto, 3♀ (00043124, 00043126, 00043127), 1 juvenile (00043121) ( BPBM). Surigao: Lake Mainit , 9.4333 ° N 125.5333 ° E, 24 Nov 1959 – 01 Dec 1959, L.W. Quate, 33 (00043122, 00043117, 00043118) ( BPBM) .

Figures

FIGURE 6. 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 13. Parameres 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 20. Distribution of Felisacus species.