Taurocerus amazonensis, Jocélia Grazia & Aline Barcellos, 2005

Jocélia Grazia & Aline Barcellos, 2005, Revision of Taurocerus (Heteroptera, Pentatomidae, Pentatomini), Iheringia, Série Zoologia 95 (2), pp. 173-181 : 177

Taurocerus amazonensis sp. nov.

( Figs. 1, 5, 8, 11, 14, 17, 20, 23 )

Description. Dorsal surface reddish-castaneous, abdominal venter reddish-castaneous to castaneous. Apex of humeri yellow. Rostrum attaining fifth sternite.

Male. Measurements (n = 2). Total length 16.50- 17.75; head length 3.22-3.34; width 3.56-3.63; eye width 0.91-0.94; interocular distance 1.81; anteocular length 1.50- 1.56; antennal segments I, 1.03-1.16; II, 1.63-1.69; III, 2.19- 2.25; IV, 3.94-4.00; V, 3.94; pronotal length 3.88-4.38; width 14.19-16.38; scutellum length 7.25-7.88; width 6.19-6.75; corium length 10.25-10.50; abdominal width 9.00-10.00.

Genitalia. Pygophore subtrapezoidal, almost quadrangular, globose in ventral view ( fig 11 ). Proctiger trapezoidal, sligthly wider basally, with a tumid area at the apical third ( fig. 5 ). Parameres distally thin ( fig. 14 ), apex slightly curved laterad ( fig. 8 ). Posterolateral angles rounded, mutic. Ventral rim: median process inconspicuous; lateromedian processes well-developed, truncate and blackish, delimiting a median V-shaped excavation ( fig. 11 ). Phallus ( figs. 17, 20, 23 ): basal plate well-developed, half as long as phallotheca. Visible part of processus phallothecae about half of the length of phallotheca. Vesica well-developed, with one median, ventral process. Ductus seminis distalis (dsd) long, surpassing conjunctiva and distally curved back inward it. Conjunctiva well-developed, with two pairs of processes: one basal (prcj1), directed dorsad and one more apical, finger-like (prcj2), turned towards prcj1.

Female unknown.

Type material. Holotype, BRASIL, Pará: Oriximiná ( bacia do Cuminá-Miri ), 19-26.I.1968, Exp. Perm. Amaz. ( MZSP) ; paratype, PERU, Rio Santiago, 6.XI. [19]28, F 6198, H. Bassler Collection Acc. 33591, Taurocerus edessoides (Spin.) ( AMNH) .

Comments. This species is very similar to T. edessoides, from which can be distinguished only by genital characters, as the parameres laterally directed and ventral rim of pygophore with truncate latero-median and an inconspicuous mesial tubercles.

Figures

Fig. 1. Taurocerus amazonensis sp. nov., holotype. Scale bar, 2 mm.

Figs. 4-12. Pygophore, respectively dorsal, caudal and ventral views: 4, 7, 10, Taurocerus achilles Stål, 1862; 5, 8, 11, Taurocerus amazonensis sp. nov.; 6, 9, 12, Taurocerus edessoides (Spinola, 1837) (dr, dorsal rim; lmp, lateral-median process; mp, median process; pa, paramere; vr, ventral rim; X, tenth segment). Scale bar, 1 mm.

Figs. 13-15. Left paramere, outer-lateral view: 13, T. achilles Stål, 1862; 14, T. amazonensis sp. nov; 15, T. edessoides (Spinola, 1837). Scale bar, 0.5 mm

Figs. 16-24. Phallus, respectively dorsal, lateral and ventral views: 16, 19, 22, T. achilles Stål, 1862; 17, 20, 23, T. amazonensis sp. nov.; 18, 21, 24, T. edessoides (Spinola, 1837) (bp, basal plate; cj, conjunctiva; dsd, ductus seminis distalis; ph, phallotheca; prcj1, processus conjunctivae 1; prcj2, processus conjuctivae 2; prph, processus phallothecae; prv, processus vesicae; v, vesica). Scale bars: figs 16, 19, 22, 0.5 mm; 17, 18, 20, 21, 23, 24, 1 mm.