Amblycara innocens, Tsai & Rédei, 2014

Tsai, Jing-Fu & Rédei, Dávid, 2014, A revision of the genus Amblycara (Hemiptera: Heteroptera: Pentatomidae), Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 133-155 : 147-149

Amblycara innocens sp. nov.

( Figs 2, 4 , 14–16 , 21–24 , 29–32 , 35–36 , 39–40 , 43–44 )

Type locality. Taiwan: Pingtung County, Nanrenshan.

Type material. HOLOTYPE: J, “ TAIWAN: Pingtung Co. \ Nanrenshan ([‘ Nanrenshan’, in Chinese script]) \ by light. 2010. VIII.14. \ leg. ‘ Chui-Sheng Chiu , Yen-Chiu Lan’ [in Chinese script]” [yellow square, printed], “ 22°05’03.3”N, 120°50’08.3”E \ #347” [yellow square, printed]; mounted on card, segments IV of both antennae glued on the card, genitalia preserved in microvial with glycerine, pinned with the specimen; deposited in NMNS ( Figs 2, 4 ). PARA- TYPES: 3 ♀♀: TAIWAN: “ TAIWAN: Pingdong Co. \ Lanren River ([‘Lanren River’, in Chinese script]) \ 2010. XII. 19 by Hand” [yellow square, printed], “leg. [‘Yen-Chiu Lan, Chui-Sheng Chiu’, in Chinese script] \ 22°3’0.6”N, 120°51’18.5”E \ #399” [yellow square, printed]; mounted on card, abdomen detached and mounted on card, genitalia dissected (1 ♀, NMNS); “ TAIWAN: Pingdong Co. \ Sheding ([‘Sheding Shika Deer Restoration Site’, in Chinese script]) \ 2010.VIII.18 by light” [yellow square, printed], “leg. [‘Chui-Sheng Chiu,Yen-Chiu Lan’, in Chinese script] \ 21°57’52.8”N, 120°49’37.8”E \ #355” [yellow square, printed]; pinned (1 ♀, TFRI). PHILIPPINES: “PHILIPPI- NES \ Aborlan, Palawan \ VII-22-23-1985 \ Coll. D.J. Boethel ” [printed]; pinned (1 ♀, DARC).

Diagnosis. Differs from the only known congener, A. gladiatoria in the short, laterally directed humeral processes ( Figs 2, 4 ) and in the genitalia of both sexes. A detailed comparison of the diagnostic characters of the two species is provided in Table 1.

Description. Macropterous male and female.

Colour and integument as in A. gladiatoria .

Structure mainly as in generic description. Pronotum 3.6–3.7 times as broad across humeri as its median length, humeral angle produced into a short process directed laterad.

Pregenital abdomen. Connexivum broader than in A. gladiatoria (diameter of each laterotergites of segments III–VII larger) ( Fig. 35 ) and more narrowly covered by the fore wing therefore more exposed. Male: Posterior margin of sternite VII broadly, subquadrately emarginate medially ( Fig. 21 ). Female: Posterior margin of sternite VII with a deep, subquadrate median excision surrounding valvifers VIII ( Fig. 32 ).

External male genitalia. Genital capsule ( Figs 14–16 ) conspicuously large in relation to pregenital abdomen, convex, posterior margin broadly concave, with a pair of relatively small posterolateral projections, with a pair of submedian tumescences ( Fig. 14 : smt) hardly protruding from surface of infolding of ventral rim; dorsal sclerite ( Fig. 15 : dsc) small, tubercle-like. Paramere ( Figs 22–24 ) with broad, rather rounded basal process (sensory lobe), apical process straight basally, nearly perpendicularly angled around middle, apical portion straight, slightly broadened towards apex, obtuse apically. Phallus ( Figs 29–31 ): basal plates ( Fig. 29 : bp) broadly laminate, strongly produced posteriad; erection fluid pump ( Fig. 29 : erp) much larger than that of A. gladiatoria ; phallotheca barrel-shaped, broadest in its apical half, apex rounded; second conjunctival process with lateral part forming a fully membranous lobe which is larger than that of A. gladiatoria , inner parts of the contralateral processes forming “median penial plates” as in Figs 30–31 . Endophallic duct S-shaped, apical portion ensheathed within aedeagus gradually tapering towards apex; phallotreme (opening of the aedeagus) narrow ( Fig. 31 ).

External female genitalia ( Figs 32 , 39–40 , 43–44 ). Laterotergites VIII broadly rounded, exposed portion conspicuously larger than that of A. gladiatoria ; visible portions of valvifers VIII situated within excision of sternite VII, subquadrate, posterior margins nearly parallel, laterotergites VII approaching but not reaching posterior margin of tergite VIII. Gynatrium ( Fig. 43 ) simple, saccular; spermathecal opening associated with a small conoid sclerite and a larger, bell-shaped sclerite surrounding it; ring sclerites could not be traced in the single examined female. Spermatheca: proximal duct longer than gynatrium, narrow; dilation long, apex of dilation reaching at least base of sternite V within abdomen ( Fig. 36 ); basal crossstriate portion restricted to about basal 1/14 of total length of distal invagination (“sclerotized rod”); distal invagination subparallel in most of its length, gradually narrowed to its base, apically strongly curved which is probably an artefact due to strong inflation of dilation ( Fig. 39 : arrow); diameter and length of distal duct subequal to those of proximal duct; intermediate part of spermatheca rather abruptly broadened around its middle, proximal flange much smaller than distal flange, apical receptacle subglobular, with three relatively short projections directed proximad, only slightly surpassing distal flange, one of them bifurcate in the single examined female ( Fig. 44 ).

Measurements (holotype J + 2 ♀♀ paratypes) (in mm). Body length 20.1–21.8, length of head 2.40–2.90, width across eyes 3.90–4.10, interocular distance 1.45–1.60, lengths of antennal segments I: IIa: IIb: III: IV as 0.85–0.90: 2.05–2.15: 2.00–2.30: 3.00–3.10: 2.85–3.05, median length of pronotum 3.15–3.25, width across apices of humeral processes 11.62–12.06, median length of scutellum 7.75–8.64, greatest width 6.25–6.70, greatest width of abdomen 11.0–11.9.

Etymology. The speci¿c epithet is the Latin adjective innocens (m, f, n) meaning ‘harmless’, referring to the short humeral process of the new species in contrast with the strongly produced humeri of A. gladiatoria .

Habitat and bionomics. Specimens were collected in monsoon rain forest (in Nanrenshan Ecological Protection Area) and uplifted coral-reef forest (in Sheding Nature Park). No observations were made on its host plant or bionomics.

Distribution. TAIWAN: PINGTUNG COUNTY: Nanrenshan!, Nanren River!, Sheding!. PHI- LIPPINES: PALAWAN: Aborlan!

The examined specimens were collected in the southernmost part of Hengchun Peninsula, southern Taiwan, and in Palawan.

Figures

Figs 1–4. Males of Amblycara in dorsal (1–2) and ventral view (3–4). 1, 3 – A. gladiatoria (Stål, 1876); 2, 4 – A. innocens sp. nov. (holotype).

Figs 9–16. Amblycara gladiatoria (Stål, 1876) (9–13) and A. innocens sp. nov. (14–16), genital capsules. 9 and 14 – dorsal view; 10–11 – dorsal sclerite, two different views; 12 and 15 – posterodorsal view; 13 and 16 – lateral view. Scales in mm. Lettering: dsc = dorsal sclerite; smt = submedian tumescence; plp = posterolateral projection.

Figs 17–24. Amblycara gladiatoria (Stål, 1876) (17–20) and A. innocens sp. nov. (21–24), pregenital abdomen and paramere of male. 17 and 21 – abdominal sternites VI and VII, ventral view; 18–20 and 22–24 – right paramere, different views. Scales in mm. Lettering: app = apical process; blp = basal process (sensory lobe); s7 = sternite VII.

Figs 25–32. Amblycara gladiatoria (Stål, 1876) (25–28) and A. innocens sp. nov. (29–32), phallus and female terminalia. 25 and 29 – phallus, lateral view; 26 – same, dorsal view; 30 – same, articulatory apparatus omitted; 27 and 31 – apex of phallus, posteroventral view; 28 and 32 – terminalia of female, most exposed (posteroventral) view. Scales in mm. Lettering: aed = aedeagus; bp = basal plates; cp-II = second conjunctival process; end = endophallic duct; erp = erection fluid pump; hi = hinge; lt8–lt9 = laterotergites VIII and IX; mpp = median penial plate; phth = phallotheca; res = endophallic reservoir; s7 = sternite VII; sb = support bridge; sbc = support bridge complex; sut = support tube; t8 = tergite VIII; vf8–vf9 = valvifers VIII and IX; X = segment X.

Figs 33–36. Amblycara gladiatoria (Stål, 1876) (33–34) and A. innocens sp. nov. (35–36), abdomen of female. 33 and 35 – dorsal view; 34 and 36 – ventral view. Scales in mm. Lettering: mfu = median furrow; sth = spermatheca; s5–s7 = sternites V–VII.

Figs 37–40. Amblycara gladiatoria (Stål, 1876) (37–38) and A. innocens sp. nov.(39–40), female ectodermal genital tracts. 37 and 39 – gynatrium and spermatheca; 38 and 40 – basal portion of dilation of spermatheca with distal invagination (“sclerotized rod”), longitudinal optical section.Scales in mm.Lettering:dd = distal duct of spermatheca; dil = spermathecal dilation; div = distal invagination of spermathecal duct; gy = gynatrium; pd = proximal duct of spermatheca. Arrow shows possible artefactual distortion of apical portion (Fig. 39) and basal portion (Fig. 40) of distal invagination of spermathecal duct.

Figs 41–44. Amblycara gladiatoria (Stål, 1876) (41–42) and A. innocens sp. nov.(43–44), female ectodermal genital tracts. 41 and 43 – gynatrium; 42 and 44 – intermediate part and apical receptacle of spermatheca. Scales in mm.