Galbinocoris, WEIRAUCH, 2006

WEIRAUCH, CHRISTIAN E., 2006, New Genera, New Species, and New Combinations in Western Nearctic Phylini (Heteroptera: Miridae: Phylinae), American Museum Novitates 3521 (1), pp. 1-44 : 2-5

Galbinocoris , new genus

Figures 1 , 2 , 3 , 6–10

TYPE SPECIES: Galbinocoris caepa , new species.

DIAGNOSIS: Recognized by the small size and ovoid body, overall pale yellowish green coloration (fig. 1), slightly bulging clypeus (fig. 2A, 3), and the male genitalia with Jshaped, twisted, rather flat and wide vesica (fig. 3). Superficially similar to Plagiognathus cibbetsi , P. guttatipes , and P. tenellus ( Schuh 2001) , but distinguished by smaller size, hind tibia without dark spots around the bases of spinelike setae, and male vesica with only one apical blade. Also somewhat similar to Nevadocoris Knight , but distinguished by smaller size and the male genitalia.

DESCRIPTION: Male: Small, ovoid, slightly elongate, slender in lateral view. COLOR- ATION (fig. 1): General coloration pale yellowish green. Head: Uniformly pale yellow-

TABLE 1 Measurements of Phylini Species ish green; antennal segments pale yellowish green, segments 3 and 4 suffused with brown; labium yellowish, segment 4 suffused with brown. Thorax: Pronotum, mesoscutum, and scutellum uniformly pale yellowish green, pleura uniformly yellowish green. Legs: Uniformly pale whitish green, distal tarsomere very slightly suffused with brown, tibial spines without dark bases. Hemelytra: Corium including clavus and cuneus pale yellowish green, anterior margin of cuneus transparent. Abdomen: Venter, pygophore, and parameres uniformly pale yellowish green, with phallotheca brown. SURFACE AND VESTI- TURE (fig. 9A): Dorsum weakly shining, covered rather densely with simple, slender, subadpressed setae of moderate length, some of them more slender (white asterisks) than others (black asterisk). STRUC- TURE: Head (figs. 2A, 3): Short, broader than long, vertex wide, slightly convex, posterior margin straight, vertex and frons sloping, clypeus somewhat bulging, mandibular and maxillary plates short, the latter slightly sunken, buccula very short, buccal cavity oval, gula very short; eyes of moderate size, about 3/4 of height of head, posterolateral margins contiguous with anterolateral margins of pronotum; antennal segment 1 short and stout, segment 2 long, slender at base and diameter increasing toward apex, segments 3 and 4 combined shorter than segment 2; labium short, apex reaching base of mesocoxa. Thorax (figs. 7A, 8A): Pronotum relatively short trapeziform, anterior margin sinuate, lateral margins slightly convex, posterior margin slightly concave, anterior and posteri- or pronotal lobes not demarcated, callus obsolete, metapleural evaporatorium with mushroomlike cuticle area broad but short, consisting of few mushroomlike components, mushroomlike cuticle anterior to mesothoracic spiracle weakly developed (fig. 7A). Legs: Slender; claw slender, gently curved, pulvillus about half as long as claw (fig. 8A). Hemelytra: Slightly convex, cuneus triangular. Abdomen: Reaching apex of cuneus (fig. 1). GENITALIA (figs. 2A, 3): Pygophore: Large and stout (fig. 2A), occupying more than 1/3 of abdomen. Parameres (fig. 3): Right paramere typically phyline lanceolate; left paramere with anterior process short, posterior process elongate, slender and straight. Phallotheca (fig. 3): Moderately slender and elongate, bent in an obtuse angle, without evident ornamentation, ventral opening slitlike. Vesica (fig. 3): J-shaped with twisted shaft and rather wide apical half, apex formed by weakly sclerotized blade with very small ventral teeth, secondary gonopore elongate, facing caudad, no gonopore sclerite, spinelike process near secondary gonopore.

Female (fig. 1): More ovoid and larger than male, antennal segments 1 and 2 more slender, segment 2 with diameter slightly increasing toward the apex. GENITALIA (fig. 6): See description of type species, G. caepa , new species.

ETYMOLOGY: Named for its pale greenish coloration, after Latin adjective galbinus meaning ‘‘greenish-yellow’’ and Greek korios, meaning ‘‘bug’’. The gender is masculine.

DISCUSSION: Galbinocoris can be distinguished from other Phylini occurring in Arizona and Texas by its pale coloration, small size, and characters of the male genitalia.

Galbinocoris caepa , new species

Figures 1 , 2 , 3 , 6–10

HOLOTYPE: Male: USA: Arizona: Cochise

Co.: Chiricahua Mountains, Onion Saddle W

to 3.5 mi E Nat. For. bndry, 31.92972 ° N 109.38167 ° W, 1661 m, 3 Jun 1983, R. T. Schuh and G. M. Stonedahl, Quercus sp. (Fagaceae) , 13 ( AMNH _PBI 00095236) ( AMNH).

DIAGNOSIS: As in generic diagnosis.

DESCRIPTION: Male: As in generic description, total length 2.45–2.70, length apex of clypeus to cuneal fracture 1.62–1.80, width across pronotum 0.87–0.92. COLORATION (fig. 1): General coloration, head, thorax, and abdomen as in generic description. SURFACE AND VESTITURE (fig. 9A): As in generic description. STRUCTURE (figs. 2, 3, 7A, 8A): Head, thorax, and abdomen as in generic description.

FEMALE: Female as in generic description. Total length 2.52–2.91, length from apex of clypeus to cuneal fracture 1.72–2.09, width across pronotum 0.94–1.16. GENITALIA: Vestibulum small, almost straight, bursa copulatrix rather wide and short, sclerotized rings small, slender and widely separated from each other (fig. 6).

ETYMOLOGY: Named for the type locality, Onion Saddle in Cochise County , Arizona, after the Latin noun caepa , meaning ‘‘onion’’.

HOST: Recorded from one unidentified species of Quercus (Fagaceae) and Vitis sp. (Vitaceae) .

DISTRIBUTION (fig. 10): Known only from Cochise County , Arizona, and Bosque and Erath counties in Texas.

PARATYPES: USA: Arizona: Cochise Co. : Chiricahua Mountains, Onion Saddle W to 3.5 mi E Nat. For. bndry, 31.92972 ° N 109.38167 ° W, 1661 m, 3 Jun 1983, R. T. Schuh and G. M. Stonedahl, Quercus sp. (Fagaceae) , 13 (AMNH_ PBI 00058652), 1♀ (AMNH_PBI 00058660) (AM). Vitis sp. (Vitaceae) , 23 (AMNH_PBI 00058644, AMNH_PBI 00095097), 7♀ (AMNH_PBI 00058676–AMNH_PBI 00058682) Quercus sp. (Fagaceae) , 133 (AMNH_PBI 00058645–AMNH_ PBI 00058647, AMNH_PBI 00058649, AMNH_ PBI 00058653–AMNH_PBI 00058655, AMNH_ PBI 00058995–AMNH_PBI 00058996, AMNH_ PBI 00095232–AMNH_PBI 00095235), 24♀ (AMNH_PBI 00058656–AMNH_PBI 00058658, AMNH_PBI 00058662–AMNH_PBI 00058663, AMNH_PBI 00058665–AMNH_PBI 00058675, AMNH_PBI 00058683–AMNH_PBI 00058684, AMNH_PBI 00058997, AMNH_PBI 00095237– AMNH_PBI 00095241) (AMNH). Quercus sp. (Fagaceae) , 13 (AMNH_PBI 00058651), 1♀ (AMNH_PBI 00058664) (CNC). Vitis sp. (Vitaceae) , 13 (AMNH_PBI 00058650) Quercus sp. (Fagaceae) , 1♀ (AMNH_PBI 00058661) (USNM). Quercus sp. (Fagaceae) , 13 (AMNH_PBI 00058648), 1♀ (AMNH_PBI 00058659) (ZISP). Texas: Bosque Co.: Laguna Park, 31.85917 ° N 97.37944 ° W, 2 May 1975, J. C. Schaffner, 33 (AMNH_PBI 00092471–AMNH_PBI 00092473) (TAMU). Erath Co.: 10 miles S of Stephenville, 32.07543 ° N 98.20194 ° W, 7 Apr 1972, J. C. Schaffner, 123 (AMNH_PBI 00057734–AMNH_ PBI 00057745), 6♀ (AMNH_PBI 00057746– AMNH_PBI 00057751) (TAMU).

Figures

Fig. 1. Habitus photographs of Galbinocoris caepa, Hamatophylus guttulosus, Insulaphylus spp., Maculamiris spp., Quernocoris caliginosus, and Vesperocoris paddocki.

Fig. 2. Lateral aspect of head and pronotum, scanning micrographs, scale measurements in mm. A. Galbinocoris caepa. B. Hamatophylus guttulosus. C. Insulaphylus cruz. D. Maculamiris baja. E. Quernocoris caliginosus. F. Vesperocoris paddocki.

Fig. 3. Head and male genitalic structures of Galbinocoris caepa and Hamatophylus guttulosus. Galbinocoris caepa, head in frontal and lateral view, right and left paramere, phallotheca, and vesica. Hamatophylus guttulosus, head in frontal and lateral view, right and left paramere, phallotheca, vesica, and apex of vesica in caudal view.

Fig. 6. Female genitalic structures, with bursa copulatrix in dorsal view and vestibulum in frontal view. Galbinocoris caepa, Hamatophylus guttulosus, Insulaphylus cruz, Maculamiris baja, Quernocoris caliginosus, Vesperocoris paddocki.

Fig. 7. Mesothoracic spiracle and metathoracic scent gland evaporatory area. A. Galbinocoris caepa. B. Hamatophylus guttulosus. C. Insulaphylus cruz. D. Maculamiris baja. E. Quernocoris caliginosus. F. Vesperocoris paddocki.

Fig. 8. Pretarsus, in frontal (above) and lateral (below) aspect. A. Galbinocoris caepa. B. Hamatophylus guttulosus. C. Insulaphylus cruz. D. Maculamiris baja. E. Quernocoris caliginosus. F. Vesperocoris paddocki.

Fig. 9. Detail of setae comprising hemelytral vestiture, where two types of setae are present, the black asterisk indicates the stouter seta, the white asterisk the more slender seta. A. Galbinocoris caepa. B. Hamatophylus guttulosus. C. Insulaphylus cruz. D. Maculamiris baja. E. Quernocoris caliginosus. F. Vesperocoris paddocki.

Fig. 10. Distribution of species of Galbinocoris caepa and Hamatophylus guttulosus. The localities of H. guttulosus are mapped onto the distribution of one of its primary hosts, Quercus virginiana.