Cantheconidea humeralis ( Distant, 1908 )

Brugnera, Ricardo, Grazia, Jocelia, Maynard, Andrew & Roca-Cusachs, Marcos, 2024, Delimiting Cantheconidea Schouteden 1907, with the description of a new genus (Heteroptera: Pentatomidae: Asopinae), European Journal of Taxonomy 947, pp. 191-215 : 195-197

Cantheconidea humeralis ( Distant, 1908)

Figs 1a–c , 2 , 9b , 10

Canthecona humeralis Distant, 1908: 452 .

Cantheconidae [sic] humeralis – Kirkaldy 1909: 366.

Cantheconidea humeralis – Hsiao et al. 1977: 84. –– Thomas 1994: 168.

Canthecona humeralis – Roell et al. 2023: 46 .

Diagnosis

Dorsal coloration usually dark brown, with iridescent purple and green; the presence of a pair of yellow spots in the anterior pronotum; apex of scutellum is pale yellow.

Type material

Syntype

MYANMAR • 1 ♀; “ Canthecona / humeralis / Distant. 1908: 452 / SYNTYPE // Tenasserim / Mergue // TYPE / H. T. // SYNTYPE // Canthecona / humeralis / Type [?] Dist. // Distant Coll. / 1911–383 // ♀ / NHMUK / 010592154”; NHMUK; NHMUK 010592154 ( Fig. 1a–c ) .

Other material examined

LAOS • 1 ♀; “Haut Mékong. / Nam Ngun // 12 May 1918. / R. V. de Salvaza leg. // Brit. Mus. / 1922- 112 // NHMUK / 010935730”; NHMUK; NHMUK 010935730 ( Fig. 2a–e ) .

Records retrieved from iNaturalist

CHINA • Guangxi, Chongzuo ; 22.440° N, 107.02° E; 20 Nov. 2022; inaturalist.org/observations/ 149974944 • Yannan, Pu’er ; 22.573° N, 101.87° E; 23 Jul. 2022; inaturalist.org/observations/13773977 0 • Yannan, Xishuangbanna Dai ; 21.920°N, 101.28°E; 25Jun.2020;inaturalist.org/observations /129387335 • Yannan, XishuangbannaDai ; 21.976°N, 101.16°E; 15Aug.2022;inaturalist.org/observations/132555614 .

THAILAND • Chiang Mai, Chiang Dao ; 19.385° N, 98.842° E; 14 Oct. 2018; inaturalist.org/observations/20268883 • Phetchabun, Khao Kho ; 16.570° N, 100.89° E; 23 Oct. 2023; inaturalist.org/observations/20268801 • Phetchaburi, Kaeng Krachan ; 12.804° N, 99.442° E; 2 Jan. 2023; inaturalist.org/observations/148179861 • Nakhon Si Thammarat, Ron Phi Pun ; 8.2406° N, 99.8056° E; 11 Apr. 2022; inaturalist.org/observations/111737972 .

Redescription

Female

COLORATION. General body coloration brown with iridescent green and purple, densely punctured, mainly on dorsal surface. Presence of pair of pale spots in anterior portion of pronotum; apex of scutellum pale. Legs light brown, with posterior portion of metafemur distinctly darker. Ventral surface and connexivum merged with pale and brown, variable among individuals.

HEAD. As long as wide; mandibular plates and clypeus subequal. Apex of labium reaching metacoxae; fourth labiomere darker than preceding; proportion of labial segments: I<II=III>IV. Antennae brown; proportion of antennal segments: I <II>III <IV>V.

THORAX. Anterolateral margins of pronotum pale, crenulated, and sinuose; humeral angles acute and laterally produced. Scutellum triangular, frenal portion longer than postfrenal portion. Corium longer than scutellum, reaching posterior margin of abdominal segment VI; hemelytral membrane dark brown surpassing apex of abdomen. Peritreme disc-type, slightly curved anteriorly; metapleural evaporatorium surrounding peritreme, not reaching lateral margin of pleura; mesopleural evaporatorium reaching lateral margin of pleura ( Fig. 2d ); presence of pair of metasternal processes holding apex of labium. Presence of profemoral spine.

ABDOMEN. Apex of connexival segments acute and projected posteriorly. Abdominal tubercle short, not reaching the metacoxae.

FEMALE GENITALIA. Valvifers 8 as long as wide, left valvifer 8 usually overlapping right valvifer, posterior margins rectilinear; valvifer 9 rectangular; laterotergites 9 longer than wide, rounded apically, aligned with the segment X.

MEASUREMENTS. (n=1) Head length: 1.51, width: 1.74; pronotum length: 5.64, width: 2.21; scutellum length: 2.7± 0.19 (2.3–2.9), width: 2.45 ± 0.18 (2.4–2.8); antennomere length: I 0.22, II 1.04, III 0.94, IV 1.42, V 1.25; labial segments length: I 0.90, II 1.04, III 1.13, IV 0.59± 0.82; abdominal length: 4.75, width: 4.28; total length: 10.10.

Male

Unknown.

Distribution

China, Laos, Myanmar, Thailand ( Fig. 10 ).

Figures

Fig. 1. Type specimens of Cantheconidea Schouteden, 1907 in ventral and dorsal view, with their respective labels. a–c. Canthecona humeralis Distant, 1908, syntype, ♀ (NHMUK010592154). d–f. Glypsus? javanus Dallas, 1851, syntype, ♂ (NHMUK010592156). g–i. Canthecona cognata Distant, 1882, syntype, ♀ (NHMUK010592152). Photos: Talita Roell (©2019 Natural History Museum of the United Kingdom).

Fig. 2. Cantheconidea humeralis Distant, 1908, ♀ (NHMUK 010935730). a. Dorsal view. b. Ventral view. c. Detail of head. d. External scent efferent system (dashed line surrounding the evaporatorium). e. Genitalia.

Fig. 9. Species in life of Cantheconidea Schouteden, 1907 and Cantheconesia Brugnera & Roca- Cusachs gen. nov. a. Cantheconidea javana (Dallas, 1851) from Sumatra (Indonesia). b. Cantheconidea humeralis (Distant, 1908) from Yunnan (China). c. Cantheconesia cyanacantha (Stål, 1870) gen. et comb. nov. from Central (Fiji). Photos: a. ©onidiras (2018); b. ©Yriassic Yan (2020); c. ©Albert Kang (2018).

Fig. 10. Geographic distribution of Cantheconidea Schouteden, 1907 and Cantheconesia Brugnera & Roca-Cusachs gen. nov. The points marked for each species are for the type specimens, specimens examined in this paper, and for records retrieved from iNaturalist. The question mark (?) in Samoa indicates the absence of an exact location.