Charagochilus consanguineus (Distant, 1904) Gapon, D. A., 2014

Gapon, D. A., 2014, Revision of the genus Polymerus (Heteroptera: Miridae) in the Eastern Hemisphere. Part 1: Subgenera Polymerus, Pachycentrum subgen. nov. and new genus Dichelocentrum gen. nov., Zootaxa 3787 (1), pp. 1-87 : 56-57

5. Charagochilus consanguineus (Distant, 1904) comb. nov.

( Figs 19 K ; 20 L–N ; 23 ; 26 C, D ; 41 E )

Poeciloscytus consanguineus Distant, 1904b: 459 .

Polymerus consanguineus Carvalho, 1959: 235 .

Material examined. Holotype. Myanmar. Ring label with red edging “Type H.T.”, “Bhamò Birmania Fea IX 1886 ”, “ consanguineus Dist. ” [handwritten], “ Distant coll. 1911–383”, “BMNH_ENT AMNH_PBI 00085726”, female ( BMNH).

Additional material. India, Mumbai , Dixon, “109”, “ Distant coll. 1911–383”, 1 female; South India, T.V. Campbell coll, “B.M. 1930–599”, 1 male *, 2 females *; Sri Lanka, Peradeniya , Feb. 1911, “ Distant coll. 1911–383”, 1 female, 25 May 1914, “ Ceylon. A. Rutherford. 1919-35”, 1 female, “IV.11.YIYY [?]”( BMNH) .

First description of male and female terminalia. Right paramere ( Fig. 20 L ) small, about one-third as long as left paramere. Paramere as in Ch. bimaculatus , but body less dilated distally.

Left paramere ( Fig. 20 M, N ). Sensory process from posterior view triangular, rather long and wide. Hypophysis from lateral view less wide than in Ch. bimaculatus , with anterio-inferior angle less convex and more smoothly rounded.

Theca with apical margin having only one large triangular sclerotised blade.

Vesica ( Fig. 23 ). Secondary gonopore located on anterior side of vesica and slightly shifted to left, with complete ring of concentrically curved spinulae. Vesical wall below secondary gonopore with sclerotization resembling subgonoporal plate of Polymerus . Anterior right lobe with two branches. Anterior one directed anteriad and upwards, moderately long and wide, with rounded apex. Inferior wall of this branch in basal part with narrow sclerotised band and in extreme apex with long pointed membranous tubercle directed anteriad and downwards. Right branch shorter and wider then anterior one, directed downwards and widely rounded apically. Anterior branch of baso-apical sclerotised band rather narrow in basal part, forms cup-shaped dilation between the bases of anterior right and medial right lobes. Anterior branch of this band forms long, flattened anterior spicule on anterior surface of base of anterior right lobe. Anterior spicule directed upwards and to right, with obtuse apex and membranous anterior wall in basal part. Anterior left lobe small, rounded, not branched, lies superiorly of base of anterior right lobe. Posterior part of vesica with rounded apex directed posteriad and to left. Posterior left lobe somewhat greater then anterior left one, with short and narrow base and oval apical part. Small, conically elongated, curved downwards membranous medial left tubercle located between bases of anterior and posterior left lobes near of superior margin of secondary gonopore. Medial right lobe moderately long, narrow, tapering to pointed apex, arcuately curved to right and anteriad. Posterior left wall of this lobe sclerotised in the form of wide band tapering apicad, but not protruding beyond apex of lobe. This band evidently corresponds to medial spicule of other Charagochilus species. Right wall of vesica with wide and straight, oblique posterior branch of baso-apical sclerotised band. Distal end of this branch sharply curving to left and forming posterior spicule in base of left posterior wall of medial right lobe. Posterior spicule flat, very narrow and long, directed posteriad and curved downwards before acute apex. Base of this spicule touches posterior margin of medial spicule. Broad, rather wide and slightly concave sclerite tapering on superior and inferior ends lies at left wall of vesica under bases of medial and posterior spicules. Posterior right lobe long, with strongly dilated base directed posteriad and upwards, and with three branches. Posterior branch sharply curded upwards and slightly anteriad, very long, narrow, tapering to acute apex curved to right and slightly posteriad. Left branch short and rather wide, rounded apically, lies on left side of lobe in base of posterior branch. Inferior branch very small, rounded, lies under left one. Left carina convex and serrated at all length, extends from margin of secondary gonopore till apex of posterior part of vesica, without process on anterior end. Posterior wall of vesica without tubercle and sclerotised area.

Gynatrium ( Fig. 26 C, D ). Ring sclerites large, without triangular plates on external margins. Sclerotised band connecting them entire, very wide, with large flat trapezoidal protrusion anteriorly and convex suboval one posteriorly. The latter protrusion lies on place on convex area of dorsal labiate plate. Tectal sclerites rather long, wide laterally, narrowing to subacute connivent internal angles. Posterior margins of tectal sclerites slightly convex in middle, not curved upwards. Dorsal sac present, short and wide, overlies on internal parts of tectal sclerites. Anterior margin of dorsal sac convex laterally and concave in middle, posterior margin convex in middle and concave laterally. Inner horizontal fold and transverse fold absent. Bases of lateral oviducts lye near posterior margin of gynatrial roof. Medial lobe absent. Posterior margin of roof with convex lateral parts. Dorsal margin of interramal sclerite with slightly concave lateral parts and trapezoidal protrusion in middle; ventral margin with deep arcuate notch. Anterior walls of internal lobes membranous, with narrow sclerotised bands along dorsal margins of their openings. Medial process, dorsal structure and lateral lobes entirely absent. Anterior vestibular sclerites large, transverse, dilated on interior ends and narrowing laterad. Posterior vestibular sclerites absent.

Taxonomic notes. This species has several characters distinguishing it from other Charagochilus species studied in the current paper: non-lammelar medial spicule (which is not quite spicule, but sclerotised band on wall of narrow medial right lobe), presence of medial left tubercle, anterior and posterior left lobes of vesica and dorsal sac on gynatrial roof. However, other characters allow the inclusion of this species in Charagochilus : short head, small right paramere, claw without denticle, collar about 1.5 times as wide as diameter of first antennal segment, rather deep punctures on pronotum ( Fig. 41 E ), dolabriform hypophysis of left paramere, vesica with left carina, with medial right lobe and medial spicule, with posterior spicule lying between bases of medial right and posterior right lobes, and gynatrium without inner horizontal and transverse folds, medial lobe, medial process and plates on external margins of ring sclerites. Perhaps Ch. consanguineus should be placed in a separate subgenus or genus.

Figures

FIGURE 19. Structure of tarsus and pretarsus. A–K, tarsus; L– P, claw. A, Polymerus unifasciatus; B, P. carpathicus; C, P. holosericeus; D, Charagochilus gyllenhalii; E, Ch. spiralifer; F, Ch. angusticollis; G, Ch. pallidicollis; H, Ch. flavipes comb. nov.; I, Ch. bimaculatus comb. nov.; J, Ch. obscuratus comb. nov.; K, Ch. consanguineus comb. nov.; L, P. carpathicus; M, Dichelocentrum ornatifrons comb. nov.; N, Proboscidocoris nitidus; O, Pr. feanus; P, Pr. solitus comb. nov. Scale bare: 0.28 mm

FIGURE 20. Parameres of Charagochilus species. Right (A, F, I, L, O) and left (B–E, G, H, J, K, M, N, P, Q) parameres. A- C, Ch. spiralifer; D, E, Ch. flavipes; F–H, Ch. bimaculatus; I–K, Ch. obscuratus; L–N, Ch. consanguineus comb. nov.; O–Q, Ch. aureus comb. nov. Left (B, D, G, J, M, P) and posterior (C, E, H, K, N, Q) view. Scale bare: 0.14 mm.

FIGURE 23. Vesica of Charagochilus consanguineus comb. nov. Left (A), right (B) and anterior (C) view. all —anterior left lobe; arl—anterior right lobe; as—apical spicule; lsc—left serrate carina; mlt—medial left tubercle; mrl—medial right lobe with rudiment of medial spicule; pa—posterior apex of vesica; pb.bab—posterior branch of baso-apical sclerotized band; pll—posterior left lobe; prl—posterior right lobe; ps—posterior spicule. Scale bare: 0.14 mm.

FIGURE 26. Inner female genitalia of Charagochilus species. A, B, Ch. bimaculatus comb. nov.; C, D, Ch. consanguineus comb. nov. Gynatrium, dorsal view (A, C), posterior wall of gynatrium (B, D), ventral view. ts—tectal sclerites. Scale bare: 0.14 mm.

FIGURE 41. Charagochilus species, head and thorax. A, Ch. flavipes comb. nov.; B, Ch. bimaculatus comb. nov.; C, Ch. obscuratus comb. nov.; D, Ch. madagascariensis comb. nov.; E, Ch. consanguineus comb. nov.; F, Ch. aureus comb. nov.