Cahara nodula Fan & Liu

Fan, Zhong-hua & Liu, Guo-qing, 2013, The genus Cahara Ghauri, 1978 of China (Hemiptera, Heteroptera, Pentatomidae, Halyini) with descriptions of two new species, ZooKeys 319, pp. 37-50 : 41-44

Cahara nodula Fan & Liu sp. n. Figs 2 a– 2c, 5, 9-10, 21-28

Type material.

Holotype male, pinned, CHINA: Yunnan Province: Xiang Mount., 5. VIII. 1979, Huan–guang ZOU leg. Paratypes: all pinned, CHINA: Yunnan Province: 1 female, same place and collector as holotype, 2. VIII. 1979; 1 female, same place as holotype, 15. VIII. 1979, Zuo–pei LING leg.; 2 males (one with genitalia in a separate microvial), 1 female, Kunming, VII. 1957; 1 female, same data as above except date, IV. 1986; 1 female, same data as above except date, V. 1986; 1 female, same data as above except date, VII. 1986; 1 male, same data as above except date, 17. VI. 1988; 1 male, Anning City, 12. V. 1988, Yun–xu WANG leg.; 1 female, Wushan Town, Mile County, alt. 2000m, 20. V. 1979, Guang–qiang YIN leg.; 1 male, with genitalia in a separate microvial, Santai Village, Dayao County, 13. VI. 1978; 1 female, Dayao County, VIII. 1980; 1 female, Dechang County, VI. 1958; 1 female, Weishan County, 4. VI. 1978; CHINA: Guizhou Province: 2 males, Huaxi District, Guiyang City, 23. V. 1987; 1 female, Changming Town, alt. 1050m, 9. IX. 2000, Chuan–ren LI leg.; 1 female, Fanjing Mount., alt. 1300m, 1. VIII. 2001, Wei–bing ZHU leg.

Diagnosis.

Humeral angles nodular and elevated upwards (Fig. 5), rostrum longer to pass beyond the middle of the 4th sternum, mandibular plates without meeting trend apically, 1st rostral segment passing beyond the posterior end of buccula, ventral rim of pygophore without any distinct processes (see discussion part).

Body size.

Male, length 16.0-18.0 mm, width between humeral angles 8.0-8.8 mm. Female, length 19.0-20.0 mm, width between humeral angles 9.0-10.0mm.

Description.

Color and puncturing Very similar to Cahara incisura , but with some differences: Punctures on dorsal head denser, while sparser and finer on the endocorium, pronotum with four or five longitudinal strips, laevigate parts of calli more distinct.

Stucture. Head. Mandibular plates about equal to clypeus or slightly longer than clypeus, apices porrect and having not convergent, both apical and lateral lobes obtuse distally, lateral margins before eye sinuate and without any distinct process. Apex of clypeus broadly exposed (Figs 2 a–c). Antennae brown, antennomere I paler, with a longitudinal black strip laterally, apical two third of antennomere IV and apical half of antennomere V black, IV>III≥V>II>I in length. Buccula low, anterior angles pointed and protrudent, outer margins straight. Rostrum with 1st joint extending beyond the buccula, apex reaching to the middle of 4th sternum.

Thorax. Pronotum with anterior half depressed and posterior half tumescent, anterior margin broad, sinuate, slightly convex mesially, anterior angle small, angulate and produced laterad, anterolateral magins crenulate, humeral angles nodular, protrudent, elevated upwards. Scutellum longer than width, basal disk and longitudinal midline tumescent. Meso sternum flat with a mesial narrow carina. Peritreme similar to Cahara incisura . Hemelytral corium longer than scutellum, membrane extending beyond the abdominal end.

Abdomen. Connexiva exposed, posterior angles pointed and produced. Venter, from 3rd to 6th abdominal sternite, with a mesial shallow groove.

Male genitalia. Ventral rim of pygophore V–shaped excavated, sinuate along the margin but without distinct process. Suspensory apodeme and infoldings of lateral rims developed. Paramere L–shaped, stem broad with a small basal process, blade long with an apical process and a basal process, these two processes all directed caudad. Aedeagus with paired sclerotized dorsal conjunctival processes, a trifurcate membranous conjunctival lobe, and a pair of slightly sclerotized ventral conjunctival processes. Median penial plates oblong, apices obtusely angulate. Vesica slim, protrudent.

Female genitalia. Outer margins of gonocoxites I black, so are the apical halves of paratergites IX, pratergites VIII thickly punctured. Gonocoxites I strongly sinuate mesially, broadly and distinctly depressed in the middle of the lateral margins so the fingerlike processes bent dorsally and almost vertical. Apices of fingerlike processes reaching the apical third of paratergites IX. Gonocoxite II with a transverse tumescent beam. Paratergite IX base with a short oblique ridge, apex passing a little beyond the posterior margin of 8th sternum. Paratergites VIII obtuse distally.

Etymology.

The name, nodula, refers to the bulbous, distinct nodular humeral angles of pronotum. It’s feminine.

Distribution.

Southwest China (Guizhou, Yunnan)