Papillopsocus oriximinaensis, García, Alfonso N. & Aldrete, 2005

García, Alfonso N. & Aldrete, 2005, Three new monotypic genera of Epipsocidae (Psocoptera) from Peru and Brazil, Zootaxa 1077, pp. 51-60 : 55-57

Papillopsocus oriximinaensis , sp. n. ( Figs. 6–12 )

Male. Color (in 80% alcohol). Body pale brown. Compound eyes black, ocelli hyaline, with ochre centripetal crescents. Wings almost hyaline, with a tenuous yellowish hue, veins pale brown, pterostigma more pigmented. Abdomen whitish, with brown, transverse subcuticular rings.

Morphology. Epicranial sulcus well defined, with lateral arms short. Outer cusp of lacinial tip broad, with 4 denticles. Forewing ( Fig. 6 ), with pterostigma narrow anteriorly, smoothly rounded, wider in the middle. Areola postica wide, rounded apically; wing venation caeciliusid. Hindwing ( Fig. 6 ) with Rs­M fused basally for a length. Hypandrium ( Fig. 7 ) broad, setose, slightly concave posteriorly. Phallosome ( Fig. 8 ) semi­closed anteriorly, aedeagal arch stout, slightly projected apically. Endophallus distinct, concave posteriorly, with a field of mesal papillae on posterior third, underlaid by one pair of elongate longitudinal sclerites, distally acuminate; endophallus sheet flanked basally by rounded, pigmented, papillose bodies. Paraprocts ( Fig.10 ) robust, setose, with field of small spines mesally on border, sensory fields elliptic, with 23–24 trichobothria, issuing from basal rosettes. Epiproct ( Fig. 10 ) trapeziform, with a group of 3 setae anteriorly, almost in line, posterior border with a row of 3 setae and a field of microspines, other setae as illustrated.

Measurements. FW: 2196, HW: 1632, F: 560, T: 1006, t1: 430, t2: 113, ctt1: 30, Mx4: 119, IO: 274, D: 234, d: 160, IO/D: 1.17, PO: 0.68.

Female. Color (in 80% alcohol). Same as the male.

Morphology. Head missing. Subgenital plate ( Fig. 12 ) broad, setose. Gonapophyses ( Fig. 11 ): v1 absent, v3 an elongate lobe on side of v2, with 5–6 setae on line; v2 stout, with a short anterior heel, and a long acuminate process. Paraprocts ( Fig. 9 ) robust, with a row of stout setae on margin, and a field of microspines, sensory fields elliptic, with 18–19 trichobothria issuing from basal rosettes. Epiproct ( Fig. 9 ) trapeziform, with a group of 3 setae anteriorly, a row of 6 stout setae along posterior border, and a field of microspines; other setae as indicated

Measurements. FW: 2253, HW: 1701.

Material studied. Holotype ♂. Brazil. Pará. Oriximiná (1°44’S: 55°52’W). Rio Trombetas, ALCOA mines, in Malaise trap, 17–26.XI.1982 (Joao Vidal). Paratypes, 1Ψ, 5♂, collected with holotype. The holotype, paratype Ψ and three paratypes ♂ deposited in the Invertebrate Collection, Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazônas, Brasil. Two paratypes ♂ are deposited in the Colección Nacional de Insectos ( CNIN), Instituto de Biología, Universidad Nacional Autónoma de México, México City.

Etymology. The generic name makes reference to the field of papillae in the endophallus of the male phallosome, and psocus= psocid, that is, psocid with papillae. The species name refers to the type locality, in the NE Amazon basin.

Remarks. The structure of the endophallus makes this genus unique in the Epipsocidae . So far, the genus is known only from the type locality. A cladistic analysis of the Epipsocetae (Casasola González, in progress), places this genus as sister group of Terryerwinia gen. n. described below, with Epipsocus argutus New (1980) from Reserva Ducke, Amazonas, Brazil, as sister group to that pair of genera.

Figures

FIGURES 6 – 12. Papillopsocus oriximinaensis. 6. Fore­ and hindwing, ♂. 7. Hypandrium, ♂. 8. Phallosome, ♂. 9. Right paraproct and epiproct, Ψ. 10. Right paraproct and epiproct, ♂. 11. Gonapophyses and ninth sternum, Ψ. 12. Subgenital plate, Ψ. Scales in mm.