Halys mudigerensis, Salini, 2019

Salini, S., 2019, Revision of the genus Halys (Hemiptera: Pentatomidae) with description of a new species from India, Zootaxa 4586 (2), pp. 351-375 : 358-360

Halys mudigerensis sp. nov.

( Figs 1–3 )

Differential diagnosis: This species can be recognized by its robust and large body (21–22 mm), humeri being broadly triangular and elevated, anterior half of pronotal disc being provided with strong undulations or pit-like depressions; posterior half of pronotal disc and basal region of scutellar disc being gibbous; the presence of an Ushaped cleft adjacent to caudal lobes of genital capsule, the black and sclerotized sublateral margins of dorsal rim provided with minute teeth-like serrations, the expanded plate-like crown of the paramere with short, blunt tooth on the dorsolateral margin, and the elongate membranous and bifid dorsal conjunctival processes of phallus ( Table 1 ).

Colouration. Dorsum uniformly ochraceous, mottled with black streaks or spots formed by clusters of black or dark brown punctae; apex of scutellum pale ochraceous in males, whole scutellar disc black in females ( Figs 3 , 15 ), scutellar pits at basal angles black; connexivum concolourous with dorsum except for dark brown anterior and posterior margins or apex of connexival segments; hemelytral membrane dark brown or light black with black veins. Corium with irregular patches of dark brown. Ventral surface and legs ochraceous, suffused with dark brown patches.

Integument and vestiture. Dorsum including head covered with dense, irregular dark brown to black punctures, sometimes forming irregular patches or spots. Ventral surface including legs with dark brown to black, coarse, dense punctures. Body glabrous.

Structure. Labium elongate, reaching or surpassing posterior margin of ventrite VI. Lateral margin of pronotum slightly concave and posterior margins of pronotum slightly concave medially. Humeri broadly triangular and elevated. Disc of pronotum with strong undulations or pit-like depressions on anterior half and posterior half of pronotal disc, elevated. Disc of scutellum slightly elevated basally.

External male genitalia ( Figs. 29–41 ). Genital capsule. Roughly quadrangular. Dorsal rim widely and concavely excavated with narrow, median emargination slightly indented medially, sublateral margins sclerotized,

black, provided with minute teeth-like serrations ( Fig. 92 ); infoldings well developed. Ventral rim concavely excavated (roughly W-shaped) medially, ventral rim with short, stout and narrow, inverted U-shaped (roughly tongue-like) process medially ( Fig. 30 ), 1+1 sclerotized and obliquely straight narrow ridge on sides of inverted Ushaped process on inner side and the ridges end in the caudolateral margin of infoldings as minute tooth; infoldings well developed, medially elevated and laterally joined to caudal lobes by a U-shaped cleft, giving a bifid appearance to caudal lobes ( Figs 29, 30 ). Paramere. Roughly C-shaped ( Figs 32–34 ), with expanded plate-like crown, short stem and expanded plate-like apodeme. Crown with small, blunt, black tooth on the dorsolateral margin. Phallus. Articulatory apparatus with basal plates and support bridge complex, dorsal connectives widened into 1+1 roughly oval capitate processes ( Figs 35 , 96 ). Phallosoma sclerotized, constricted towards both ends, broadest medially and concave dorsally; two pairs of membranous conjunctival processes, dorsal pair elongate with slightly bifid apex for one of the lobes and the other lobe almost bifid ( Figs 36, 37 ), ventral pair shorter and broader than dorsal pair and apically rounded, ventral pair encircling base of dorsal pair with two short, sclerotized strips. Processes of aedeagus hard, sclerotized, fused along midline at proximal half encompassing short, sclerotized aedeagus and separated at distal half; distal half expanded into a rectangular plate with truncate apex and longer than aedeagus ( Fig. 38 ).

External female genitalia ( Figs 39–41 ). Terminalia. Valvifers VIII quadrangular, with mesal margin nearly straight. Valvulae VIII with apical (= caudal) margin not uniformly rounded, but slightly concave medially ( Fig. 41 ). Valvifers IX fused along midline, forming narrow, median transverse sclerite with anterior and posterior margins concave. Laterotergite IX narrow, finger-like, obliquely placed, separated with segment X between them; apical margin of laterotergite IX rounded and distinctly shorter than apex of abdomen; laterotergite IX articulated with laterotergite VIII laterally. Laterotergite VIII elongate and triangular, fused in the midline into a narrow transverse sclerite; laterotergite VIII with 1+1 spiracles situated adjacent to inner lateral margin, caudolateral margin smooth and convex. Spermatheca ( Fig. 39 ). Apical receptacle orbicular with three finger-like processes, directed towards flanges.

Type material. Holotype, ♂, INDIA: Karnataka: Mudigere, Students collection ( UASB) . Paratype, ♀, as holotype ( UASB)

Measurements (in mm). Male (n=1). Body length 21.47; head length 5.18, head width 3.32, interocular width 1.98; lengths of antennal segments: (I) 1.14, (II) 2.68, (III) 2.60, (IV) & (V) missing; lengths of labial segments: (I) 2.67, (II) 4.68, (III) 5.17, (IV) 2.99; pronotum length 4.49; pronotum width 10.22; scutellum length 7.94; scutellum width 5.68. Female (n=1). Body length 20.91; length of head 4.99, width across eyes 3.38, interocular distance 1.96; lengths of antennal segments: (I) 1.06, (II) 2.66, (III) 2.51, (IV) 2.22, (V) missing; lengths of labial segments: (I) 2.55, (II) 4.22, (III) 5.20, (IV) 3.38; median length of pronotum 4.35; humeral width 10.74; length of scutellum 7.91; basal width of scutellum 5.81.

Etymology. The specific epithet, ‘ mudigerensis ’, is based on the name of the type locality; adjective.

Figures

FIGURES 1–9. Halys Fabricius, 1803 (dorsal and ventral habitus). 1–2, Halys mudigerensis sp. nov. (male); 3, H. mudigerensis sp. nov. (female without abdomen); 4–5, H. serrigera Westwood, 1837; 6–7, H. shaista Ghauri, 1988; 8–9, H. sulcata (Thunberg, 1783)

FIGURES 10–17. Halys Fabricius, 1803.10, H. mudigerensis sp. nov. (head—dorsal);11, H. serrigera Westwood, 1837 (head—dorsal); 12, H. serrigera Westwood, 1837 (head—ventral); 13, H. shaista Ghauri, 1988 (head—dorsal); 14, H. sulcata (Thunberg, 1783) (head—dorsal); 15, H. mudigerensis sp. nov. (scutellum); 16, H. serrigera Westwood, 1837 (head—lateral); 17, H. mudigerensis sp. nov. (pronotum). Lettering: at—antenniferous tubercle; b—bucculae; lr—labrum; mt—tooth on lateral margin of mandibular plates.

FIGURES 29–35. H. mudigerensis sp. nov.—male genitalia. 29, genital capsule (dorsal); 30, genital capsule (ventral); 31, genital capsule (caudal); 32, paramere (ventral); 33, paramere (dorsal); 34, paramere (lateral); 35, articulatory apparatus. Lettering: bcl—bifid caudal lobes; cp—capitate processes; mp—median process; t—tooth.

FIGURES 36–41. H. mudigerensis sp. nov.—male and female genitalia. 36, phallus (dorsal); 37, phallus (ventral); 38, phallus (lateral); 39, spermatheca; 40, female terminalia; 41,valvulae VIII. Lettering: dcp—dorsal conjunctival processes; lt VIIIlaterotergite VIII; lt IX—laterotergite IX; pa—processes of aedeagus; sp—spermathecal pump; vcp—ventral conjunctival process; vlf VIII—valvifers VIII; vlf IX—valvifers IX.

FIGURES 91–93. FIGURE 91. External scent efferent system showing peritreme and associated structures. FIGURES 92– 93. Genital capsule (caudal). 92, H. mudigerensis sp. nov.; 93, H. serrigera Westwood, 1837. Lettering: E—evaporatorium; Mf—median furrow; Mp—Metepimeral pseudosuture; Ms—metathoracic spiracle with filter process; O—Ostiole; Op— Ostiolar plate; P—Peritreme; t—tooth; ts—tooth like serrations.

FIGURES 94–99. FIGURES 94–95. Genital capsule (caudal). 94, H. shaista Ghauri, 1988; 95, H. sulcata (Thunberg, 1783). Lettering: t—tooth; ts—tooth like serrations. FIGURES 96–99. Capitate processes. 96, H. mudigerensis sp. nov.; 97, H. serrigera Westwood, 1837; 98, H. shaista Ghauri, 1988; 99, H. sulcata (Thunberg, 1783)