Bifurcipentatoma parabrunnea, Fan, Zhong - Hua & Liu, Guo - Qing, 2012

Fan, Zhong - Hua & Liu, Guo - Qing, 2012, species from China (Hemiptera: Heteroptera: Pentatomidae), Zootaxa 3274, pp. 14-28 : 20-21

Bifurcipentatoma parabrunnea sp. nov.

(Figs. 8–9, 16–26)

Types. Holotype: male, CHINA: Fanjing Mount. (27°55'N, 108°41'E), Guizhou Province, alt. 2200m, 30. VII. 2001, Wen–jun Bu leg. (NKUM). Paratypes: 2 females, 3 males, same data as holotype; 2 females, 6 males, same place as holotype except date and collector; 1 male, CHINA: Mao’er Mount. (25°53'N, 110°25'E), Guangxi Province, alt. 2100m, 21. VIII. 1992, Le–yi Zheng leg. (all in NKUM).

Diagnosis. Closely allied to B. brunnea by the similar body size, color, shapes of peritreme and abdominal basal tubercle, but distinguished by the following characters: Punctures on the pronotal surface denser; humeral angles of pronotum stronger; the median yellow patch on each connexivum small and narrow, not larger than 1/3 of each connexivum; the male genitalia also very different (figs. 20–26).

Description. Color and puncturing. Dorsally ochraceous and coarsely punctured with brownish–brassy punctures; lateral margins of head weakly red; serration on the anterolateral margin of pronotum narrowly metallic green, while both the submarginal area of anterolateral margin and the apical margins of humeral angles red. Each connexivum metallic green with a small yellow spot laterally in the middle. Ventral surface pale yellow. One black spot on each pleuron and near coxa. Legs pale yellow and becoming darker towards the end; claws with the apical half black.

Structure. Head. Apical half transversely wrinkled; lateral margins linearly black along edge; one small, laevigate, oblong patch near each eye; two narrow laevigate bars between the ocelli; mandibular plates narrowing apically and slightly longer than the clypeus; a linear black streak above each antennal base. Antennae slim, pale yellow brown, apices of antennomeres 2 and 3 dark brown, apical halves of antennomeres 4 and 5 black, the antennomere 1 only slightly shorter than the apex of clypeus, antennomeres 2 and 3 subequal in length or the latter slightly longer. Rostrum with the apex black, reaching the posterior margin of the abdominal sternum 3.

Pronotum. Punctures in the middle of pronotum somewhat linearly arranged, areas between lines of punctures tumescent, appearing wrinkled; anterior margin deeply concave and broadly straight medially; anterior angle directed laterally, apex reaching outer margin of eye; anterolateral margin concave, finely denticulate, serrations becoming gradually weaker posteriad; each humeral angle distinctly protruding, elevated upwards, apically bifid, the anterior tooth sharp, stronger, the posterior tooth short; posterior edge of each humeral angle crenulate; posterior margin of pronotum nearly straight.

Scutellum. Three obscure laevigate spots along basal margin, one in the middle, two lateral ones adjacent to basal black depressions; medial punctures thicker; apex narrow with a blunt end.

Hemelytra. Base of exocorium densely and coarsely punctured with metallic green punctures; punctures on exocorium finer and paler than those on the endocorium; apical margin of each corium obliquely straight; membrane smokey brown, passing beyond abdominal apex, veins darker in color. Punctures of thoracic venter concolorous with the surface. Peritreme straight, very short, apex blunt.

Abdomen. Connexiva narrowly exposed, posterior angles short, acute. Venter smooth without punctures; basal tubercle distinct but not produced forwards; narrowly black around stigmata. Posterior margin of the abdominal sternum 7 sinuate medially and dsitinctly depressed laterally in female (figs. 16–17), without such further depressions in male (figs. 18–19).

FIGURES. 16–19. Posterior margin of abdominal sternum 7 of B. parabrunnea 16. Ventral view in female. 17. Lateral view in female. 18. Ventral view in male. 19. Lateral view in male.

Male genitalia. Middle third of ventral margin of pygophore deeply and quadrangularly excavated (fig. 20). Paramere (figs. 22–23) oblong. Aedeagus (figs. 24–25) with a pair of stout sclerotized dorsal processes and a slender membranous median conjunctival lobe; two sclerotized appendages on ventral side of conjunctiva; median penial plates oblong; vesica much shorter than apex of median penial plate.

Female genitalia (fig. 26). Gonocoxite 1 with mesial margin sinuate, diverging distally, postero-mesial angle (fig. 26, pma) round, postero-lateral angle (fig. 26, pla) round and more prominent; paratergite 9 oblong, each with apex passing beyond that of paratergite 8.

Etymology. The species name, parabrunnea , is a Latin adjective given for its similarity with B. brunnea .

Distribution. Southern and Southwest China (Guangxi, Guizhou).