Aulacogenia dentata Zhao & Cai

Zhao, Ping, Cai, Wanzhi & Tomokuni, Masaaki, 2005, A review of the genus Aulacogenia Stål (Heteroptera: Reduviidae: Stenopodainae) from China, Zootaxa 1055, pp. 23-40 : 30-32

2. Aulacogenia dentata Zhao & Cai , sp. nov. ( Figs. 15–24 )

Description. Color. Dark brown, suffused with irregular paler and darker markings. Eyes grayish black, shining; depression on posterior lobe of pronotum, stripes of lateral sides of meso­ and metathoracic sterna brownish black; most of scutellum, darker irregular markings on hemelytron, legs (except paler markings), distal half of each segment of connexivum, most of abdomen beneath blackish brown; bulging portion of head above, carinae on pronotum, most of hemelytron pale yellow; irregular paler markings on membrane of hemelytron grayish white to grayish yellow; most of abdomen beneath suffused with irregular markings, basal 2–4 segments with dark brown longitudinal markings.

Structure. Medium sized. Anteocular portion distinctly longer than postocular portion; anterior 3/4 of anteocular portion with 4 hairless longitudinal depressions, posterior 1/4 of anteocular portion with 3 hairless longitudinal depressions ( Fig. 15 ); lower margin of anteocular portion nearly straight; first antennal segment subequal to first rostral segment in length, distal portion thickened, second antennal segment subequal to basal 2 rostral segments together in length. Antennal tubercle short, feebly bent; inner antennal process developed, apical portion rounded and distinctly reflexed dorsally. First rostral segment reaching anterior margin of eye. Middle of dorsal surface of postocular portion longitudinally depressed, anterior and posterior parts deepest, lower margin of postocular with 2 similar sized nodular tubercles ( Fig. 19 ). Anterior pronotal lobe slightly shorter than posterior pronotal lobe; collar distinct, collar process rounded; anterior lobe of pronotum with hairless sculpturing, middle longitudinal depression not continuous; anterior portion of posterior pronotal lobe with 4 carinae and posterior portion with 2 carinae, depressed portion wrinkled; lateral angle of posterior pronotal lobe with tubercular process, middle portion of posterior margin of pronotum slightly convex. Pronotal stridulitrum with about 60 transverse striae, striae in the posterior half coarser ( Cai et al. 1994). Fore tibiae not wider than fore femur. Posterior angle of each segment of connexivum distinctly protruded ( Figs. 15 , 19 ).

Measurements. ɗ. Body length 15.00, maximum width of abdomen 3.87, Head length 2.53, length of anteocular part 1.28, length of postocular part 0.83, length of synthlipsis 0.80, distance between ocelli 0.5, length of antennal segments I:II:III:IV=1.22:1.53:0.20:0.65, length of rostral segments I:II:III=1.15:0.48:0.63, length of anterior lobe of pronotum 1.07, length of posterior lobe of pronotum 1.33, maximum width of pronotum 0.87, length of scutellum 0.87, length of hemelytron 8.93.

Type material. Holotype, ɗ, China, Yunnan, Wenshan County, 1986­VIII­12, kept in CAU.

Etymology. The specific name refers to the posterior angle of each segment of connexivum, which has a saw­tooth­like process.

Distribution. China (Yunnan).

Remarks. The new species is allied to A. jitrana Miller , but the new species has longer antennal tubercles and the inner antennal process is larger and distinctly reflexed dorsally. The tubercular process of the pronotum of the new species is shorter than that of A. jitrana Miller. This species belongs to the acutangula group.

Figures

FIGURES 15 – 18. Aulacogenia dentata Zhao & Cai, sp. nov., ♂, 15, habitus; 16, apical part of abdomen; 17, 18, clasper. 16, lateral view. Scale bar of 15 = 2.24 mm; of 16 = 1.00 mm; of 17, 18 = 0.38 mm.

FIGURES 19 – 24. Aulacogenia dentata Zhao & Cai, sp. nov., ♂. 19, head and pronotum, antennae removed; 20, apical part of abdomen; 21, pygophore; 22, clasper; 23, phallus; 24, phallosoma. 19, 23, lateral view; 20, 21, ventral view; 24, dorsal view. Scale bar of 19 – 20 = 1.00 mm; of 21 = 0.50 mm; of 22 = 0.38 mm; of 23 – 24 = 0.25 mm.