Felisacus luzonus, 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 : 112-113

Felisacus luzonus , sp. nov.

Figures 5 , 10I , 12U, V , 14X , 16F , 19

DIAGNOSIS: Recognized by the following combination of characters: marking along inner margin of corium brown, narrow, reaching R+M posteriorly and not extending toward R+M anteriorly; antennal segment I swollen medially (as in Namyatova et al., 2016: fig. 8B), red; transverse depression delimiting occipital region present only dorsally; dorsal surface of labial segment I not elongate posteriorly (as in Namyatova et al., 2016: fig. 6E); labium reaching middle of mesosternum; ventral wall of genital capsule curved apically; genital capsule not swollen from lefthand side (fig. 14X); right paramere with outer and inner angles distinct, without outgrowths (fig. 12U); inner margin of medial part of left paramere with triangular-shaped swelling (fig. 12V); apical half of ductus seminis sclerotized, straight apically (fig. 10I).

DESCRIPTION: Male. Total length 3.8. COL- ORATION (fig. 5): Head: Dorsal and lateral sides mostly pale brown, anterior and ventral surfaces mostly yellow; dorsal surface posteriorly and marking on frons reddish, buccula pale brown anteriorly, mandibular and maxillary plates yellow; clypeus yellow, with reddish tinge basally and brown apically; eye reddish brown. Labium: Segments I, III, and IV yellow, segment II pale brown. Antenna: Segments I–II reddish brown, segments III–IV brown. Thorax: Pronotum pale brown, brown posteriorly; mesoscutum and scutellum pale brown; thoracic pleura mostly pale brown, mesopleura with brown marking; scent gland evaporative area whitish yellow. Hemelytron: Mostly translucent; clavus opaque, brown; corium colorless, marking along inner margin of corium brown, reaching R+M posteriorly and not extending toward R+M anteriorly; embolium colorless with brown margins; cuneus with yellow tinge, with outer margin brown and inner margin whitish yellow; membrane with brownish tinge; membrane cell brown. Legs: Coxae whitish yellow, femora whitish basally and yellow apically; tibiae and tarsi yellow, foretibia and tarsus somewhat darker than middle and hind tibiae and tarsi. SURFACE AND VESTITURE: Corium smooth, with shallow and scarce punctation. Dorsum with setae subequal to or longer than antennal segment II diameter; antennal segment I clothed with suberect setae shorter than antennal segment II diameter; forefemur clothed with suberect setae longer than antennal segment II diameter. STRUCTURE AND MEA-

SUREMENTS: Body ca. 4.0× as long as pronotum width. Head: Depression delimiting occipital region present only dorsally (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; distance from eye to pronotum distinctly longer than eye diameter, not swollen laterally; vertex ca. 1.5× as wide as eye, flat (as in Namyatova et al. 2016: fig. 6E). Labium: Reaching middle of mesosternum; segments I and II slightly longer than wide, combined longer than half of segment III; dorsal surface of segment II not elongate posteriorly (as in Namyatova et al., 2016: fig. 6E); segment III shorter than ventral side of head, segment IV ca. 1.5× as long as segment III. Antenna: Segment I slightly longer than head width, widened medially (as in Namyatova et al., 2016: fig. 8B), ca. 1.4× as long as head width, ca. 0.8× as long as pronotum width; segment II ca. 1.7× as long as head width, ca. 0.9× as long as pronotum width; segment III slightly longer than segment II; segment IV subequal to half of segment III. Thorax: Anterior part shorter than posterior part; collar delimited; posterior part slightly upraised; posterior margin of pronotum slightly concave; pronotum ca. 1.4× as wide as long and ca. 1.9× as wide as head; mesoscutum slightly exposed. Hemelytron: Area along inner margin of corium swollen; inner margin of cuneus straight (Namyatova et al., 2016: fig. 13F), outer margin of cuneus twice as long as base. Genitalia: Genital capsule (fig. 14X) twice as long as wide; ventral wall ca. 1.5× as long as dorsal wall, with posterior margin acute, apex placed almost medially, slightly curved dorsally, without toothlike outgrowth; left side of genital capsule not widened, margins of paramere sockets distinctly angulate; distance between paramere sockets ca. 0.25× as long as genital capsule width at base. Right paramere (fig. 12U) distinctly curved; apex concave posteriorly, medial part almost as wide as basal part, without setae, with straight outer margin and curved inner margin bearing triangular outgrowth; outer angle distinct; inner angle distinct, without swellings or outgrowth(s), bearing setae; basal part of paramere slightly shorter than rest of paramere. Left paramere (fig. 12V) irregularly shaped; apical part flattened, with subrectangular outgrowth, removed from apex; middle side widened, with two outgrowths, one of them bearing setae. Aedeagus (general view as in Namyatova et al., 2016: fig. 22M) conjunctiva membranous; vesica without spicules; half of ductus seminis sclerotized apically, secondary gonopore placed near theca mouth in repose; ductus seminis straight apically (fig. 10I).

Female. Total length 4.1. COLORATION: Head: Mostly as in male, abdomen whitish with brown dorsum. SURFACE AND VESTITURE: As in male. STRUCTURE AND MEASURE-

MENTS: Structure as in male; body ca. 4.1× as long as pronotum width; vertex ca. 1.4× as wide as eye; pronotum ca. 1.2× as wide as long and 1.9× as wide as head. Genitalia: 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 posterior part, removed from each other, spermathecal gland attached near anterior margin (as in fig. 16G); dorsal labiate plate without distinct tubercles, without membranous lobe posteriorly (fig. 16F).

DISTRIBUTION: Philippines (fig. 19).

HOST PLANTS: Unknown.

REMARKS: Antennal segments and legs except all coxae and middle and hind femora are lost in females. Abdomen of males was dissected before description.

ETYMOLOGY: The species is named after Luzon Island, where the holotype was collected.

DISCUSSION: Felisacus luzonus is similar to F. philippinensis externally (cf. fig. 5 with 6), but the latter species differs in the markings along the inner margin of the corium where it is short, and does not extend anteriorly nor posteriorly (fig. 6), the labium only slightly surpasses the posterior margin of the mesosternum, the genital capsule is broad on the left-hand side (fig. 15G), and the ductus seminis is hooked apically (fig. 10K).

MATERIAL EXAMINED: Holotype: PHILIP-

PINES: Luzon: Dalton Pass, Nueva Vizcaya Prov., 16.11722 ° N 120.96 ° E, 915 m, 09 Apr 1968 – 10 Apr 1968, D.E. Hardy, 13 (00017865) ( BPBM). Paratype: PHILIPPINES: Luzon: Imugan [Imugin], Nueva Vizcaya [N. Viscaya] Prov., 16.1589 ° N 120.9036 ° E, 949 m, 1700, Baker, 1♀ (00017867) ( MZH).

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.