Adelphocorisella rubricornis Malipatil & Chérot, 2016

Chérot, F. & Malipatil, M. B., 2016, A review of Adelphocoris - Creontiades - Megacoelum complex (Hemiptera: Heteroptera: Miridae: Mirini), with descriptions of two new genera and four new species, Zootaxa 4126 (2), pp. 151-206 : 160-161

3.3. Adelphocorisella rubricornis Malipatil & Chérot n. sp.

( Figures 6 , 9–11 )

Material examined. Holotype ♀: AUSTRALIA: NORTHERN TERRITORY: Daly River, 7.i.1956, Crawford L. D. leg. ( ANIC) (fourth segment of both antennae and right mid and hind legs missing). Paratype Ƌ: AUSTRALIA: NORTHERN TERRITORY: Darwin, H.W. leg. ( SAM).

Diagnosis. Body stramineous tinged with red; vertex stramineous, not carinate, slightly sulcate; labium reaching base of abdomen; first antennal segment, distal ½ of second and third red, fourth segment missing; pronotum including apical collar stramineous, tinged with red, sometimes with brown patches apically; legs stramineous and red, tibial spines yellowish brown; scutellum and hemelytra stramineous tinged with red, apex of clavus, embolium and membrane brown.

Description. Elongate ovate, body including head and pronotum covered with fine yellow pubescence. Head slightly acuminate, eyes touching pronotum, reddish-brown. Mandibular and maxillary plates stramineous tinged with red. Tylus vertical, stramineous. Vertex stramineous, uncarinate, sulcus short and thin, posterior part slightly depressed. Antennae slender, first segment slightly more incrassate than other segments, first, distal ½ of second and third antennal segments (excluding base) reddish. Fourth missing. Labium well exceeding hind coxae, reaching base of abdomen; labial tip brownish. Pronotum posterior margin gradually convex, humeral angles rounded. Pronotal collar narrow, stramineous. Callosities stramineous, slightly tinged with red, reduced, totally separated in middle and separated from pronotal lateral margins. Pronotal lateral margin ecarinate. Pronotal disk stramineous, with a brown median patch in female. Legs stramineous. Apex of femora reddish. Distal ends of tibiae and tarsi light fuscous. Tibial spine yellowish brown. Scutellum slightly swollen above except at depressed base, stramineous, with two regular brownish spots joining apically in male. Hemelytra exceeding abdomen by about ¼, stramineous, apical area of clavus and apex of embolium dark brown, anterior margin (including cuneal fracture) and apex of cuneus tinged with red. Membrane dusky brown, veins whitish.

Measurements (holotype female, followed by those of paratype male in parentheses). Total length 5.6 (6.1); maximum width 2.01 (2.04). Head: length 0.74 (0.85); width across eyes 1.02 (1.14); interocular space 0.30 (0.36); eye length 0.36 (0.41); eye width 0.29 (0.41); length of antennal segments: I 0.89 (0.98), II 2.28 (2.46), III 1.69 (missing), IV missing. Labium: length of segments: I 0.55 (0.58); II 0.60 (0.62); III 0.51 (0.51); IV 0.79 (0.74). Labrum length 0.36 (0.30). Pronotal length 1.04 (1.14); width of posterior margin 1.84 (1.88). Length of scutellum 0.87 (0.93); width 0.93 (0.93). Length of hemelytra 4.55 (4.76), length corium 3.57 (3.64).

Male genitalia. Pygophore posterior margin broadly pointed, knobs near attachment of parameres indistinct. Right paramere broad, tip or primary apophysis abruptly pointed and notched. Left paramere ( Fig. 9 ) sickle shaped, hump slightly swollen, slightly expanded apically before abruptly narrowing to point ( Fig. 10 ), dorsally with a slight swelling near base of blade. Phallotheca tubular ( Fig. 11 ). Phallus with SG prominent, visibly semicircular, primary membranous sac prominent, with one large spinelike process in front of it apically rectangular and turned, also 2 or 3 shorter lobes with spines of varying size, outer margin of left lobe with brushy hairs.

Discussion. A. rubricornis n. sp. can easily be separated from the two Japanese species described by Miyamoto & Yasunaga (1993) and the Australian species described by Malipatil & Chérot (2002) by its coloration and, from the Japanese species, by the male genitalic structures also. The male genitalic structures of A. australis and A. rubricornis are relatively similar. Both sexes of A. rubricornis present minor differences. In the male paratype, the dorsal pilosity is longer, the fuscous median patch on pronotum absent, and the tip of head dorsally and the anterior margin of pronotum possesses a few erect bristles (bristles not so distinct in the female holotype).

Figures

FIGURES 1 – 8. Habitus of ACMc members: 1. Adelphocoridea brunnea Poppius, 1912, male from Madagascar (MNRJ). 2. Adelphocoridea laevigata Poppius, 1912, female holotype from Madagascar (MZHF). 3. Adelphocoris seticornis (Fabricius, 1775) from Belgium. 4. Adelphocorisella brunnescens (Poppius, 1915) n. comb., male holotype from Papua New Guinea (MZHF). 5. Adelphocorisella relata (Distant, 1904) n. comb., male lectotype from Sri Lanka (NHM). 6. Adelphocorisella rubricornis n. sp., female holotype from Australia (ANIC). 7. Carvalhocapsus scutellosum (Carpintero & Chérot, 2002), male paratype from Argentina (Coll. D. L. Carpintero). 8. Cheilocapsidea insignis (Distant, 1909), male from Laos (NMPC). Scales = 1 mm.

FIGURES 9 – 11. Male genitalia of Adelphocorisella rubricornis n. sp.: 9. Left paramere. 10 Apex of primary apophysis of left paramere. 11. Phallotheca. Scales = 0.1 mm, except Fig. 10 scale = 0.05 mm.