Cavelerius mishmiensis Slater & Miyamoto, 1963

Gao, Cuiqing & Zhou, Yu, 2021, Review of the genus Cavelerius (Heteroptera: Blissidae) with descriptions of three new species from China and Southeast Asia, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 61 (1), pp. 113-132 : 120-122

Cavelerius mishmiensis Slater & Miyamoto, 1963

( Fig. 7 )

Cavelerius mishmiensis Slater & Miyamoto, 1963: 149 ; Sඅൺඍൾ*© &

O’Dඈඇඇൾඅඅ (1995: 48).

Type material examined. Pൺ*©ൺඍඒඉൾ:J, BURMA: / Mishmi Hills. / Chhaglon. / 5,350ft. 1935. / M. Steele. [pr] // Brit. Mus. / 1935- 312[pr] // DONATION FROM / J.A. SLATER/ COLLECTION [pr] // Cavelerius [hw] / mishmiensis [hw] / PARATYPE [pr] / J. A. Slater [pr] & [hw] / S. Miyamoto [hw] [red label] ( AMNH). We examined the photos ( Fig. 7 ).

Diagnosis. Brachypterous form ( Fig. 7 ). Head, pronotum, scutellum and abdomen completely black. Clypeus extending forward to apical end of first antennal segment. First antennal segment bright orange-yellow; second, third and fourth segments black. Postero-lateral lobes of

pronotum slightly produced caudad. Hemelytra reduced to widely separated narrow pads. Corium and clavus fused but the components recognizable. Membrane reduced to narrow fringe alongside inner margin of corium. Legs uniformly bright orange-yellow. Body length: 6.14 mm ( Fig. 7 ).

Submacropterous form. Clavus dark brownish yellow and all margins dark brown. Corium dark brownish yellow except for dark brown apical fourth and inner vein (vein Cu). Membrane nearly uniformly dark chocolate brown except for small areas adjacent to apex of corium, extreme base and apex that are light. Body length: 6.22 mm (Sඅൺඍൾ*© & Mංඒൺආඈඍඈ 1963).

Distribution. India: Tamil Nādu (Sඅൺඍൾ*© & Mංඒൺආඈඍඈ 1963), Myanmar (Sඅൺඍൾ*© & Mංඒൺආඈඍඈ 1963).

Cavelerius obscuratus Slater & Miyamoto, 1963 Material examined. CHINA: 5JJ 1♀, Fඎඃංൺඇ, Xianyou / 21.xii.1974 /

( Fig. 8 ) host: sugar cane (submacropterous) [all hw] (NKUM); 1 J 2♀♀, Fඎඃංൺඇ

/ 1977 / host: sugar cane (submacropterous) [all hw] (NKUM); 3 ♀♀, Cavelerius obscuratus Slater & Miyamoto, 1963: 150 ; Sඅൺඍൾ*© & O’Dඈඇ-

JංൺඇGඑං, Ji’an (brachypterous) [all hw] (NKUM). ඇൾඅඅ (1995: 48). Type material examined. Pൺ*©ൺඍඒඉൾ: ♀, NEPAL: MUSEUM PARIS / Redescription. Submacropterous or brachypterous (Fig. KURSEONG / R. OBERTHÜR 1899 [pr] // DONATION FROM / J. A. 1e). SLATER / COLLECTION [pr] // Cavelerius [hw] / obscuratus [hw] / Submacropterous form. Large species. Parallel-sided. PARATYPE [pr] / J. A. Slater [pr] & [hw] / S. Miyamoto [hw, red label] Colouration. Head, pronotum, scutellum and abdomen (AMNH). We examined the photos ( Fig. 8 ).

black. First antennal segment yellow, second antennal Diagnosis. Head, pronotum, scutellum and abdomen black. segment brown to brownish black, third and fourth seg- First antennal segment bright yellow; second, third and ments brownish black to black. Hemelytra pale yellow to fourth segments uniformly dark brown. Postero-lateral dark yellow. Clavus and vein A1 yellow, clavus infuscalobes of pronotum very slightly produced caudad. Corium ted toward apex. Vein Cu of corium in apical one - half to pale yellow except for dark brown apical one-third and two - thirds brownish black, terminal one - fourth of corium inner vein of corium (vein Cu). All margins of clavus dark except for exocorium brownish black. Corial margin browbrown. Membrane almost uniformly dark brown except for nish black. Membrane with central irregular brown spot not small areas adjacent to apex of corium and extreme base reaching lateral margins. Veins between membranal spot that are pale yellowish. Legs bright yellow. Body length: and distal margin of corium brown. Legs bright orange 6.93 mm (Sඅൺඍൾ*© & Mංඒൺආඈඍඈ 1963). yellow, except for brown foretibiae. Distribution. Nepal (Sඅൺඍൾ*© & Mංඒൺආඈඍඈ 1963). Structure. Head distinctly broad, tip of clypeus at most

extending forward to apical one-third of first antennal

segment. Pronotum with lateral margins slightly sinuate.

Cavelerius saccharivorus ( Okajima, 1922)

( Figs 1e, f ; 9 ) Punctures of anterior lobe distinct and deep. Width of po-

sterior lobe slightly wider than anterior lobe. Punctures on Blissus saccharivorus Okajima, 1922: 364–367 . Cavelerius saccharivorus : Sඅൺඍൾ*© & Mංඒൺආඈඍඈ (1963: 142); ZIJൾඇǤ posterior lobe inconspicuous. Area posterolaterad of scu- & Zඈඎ (1981: 69); Sඅൺඍൾ*© & O’Dඈඇඇൾඅඅ (1995: 48); Pඣ*©ංർൺ*©ඍ tellum produced only slightly caudad. Membrane usually (2001: 72). extending to tergite VI. Abdomen wider than hemelytra.

Labium elongate, extending to or almost to anterior margin of mesocoxae.

Brachypterous form. Body length shorter than in submacropterous specimens. Colouration. Hemelytra yellowish white, short, extending only to tergite IV; ca. terminal one-third of corium blackish brown.

Both forms. Spiracles on laterotergite II large, about one - fourth as large as total width of laterotergite II there ( Fig. 9b ). Apical part of pygophoral dorsal opening oval, only very slightly narrower than basal part ( Fig. 9c ). Outer lobe of paramere long and pointed; inner lobe of paramere short; blade of paramere slightly curved, apex obtuse ( Figs 9d–g ). Phallus shown in Figs 9h–k . Wings of sperm reservoir widest near base, more than three times longer than wide ( Fig. 9k ).

Measurements (submacropterous (n = 8) / brachypterous (n = 3); mm). Body length 7.00–8.15 / 6.76–6.89; maximum width 1.72–2.16 / 1.76–1.82. Head: length 0.66– 0.68 / 0.62–0.71; width across eyes 1.07–1.14 / 1.03–1.05; interocular space 0.74–0.79 / 0.70–0.73; interocellar space 0.42–0.43 / 0.38–0.40; eye–ocellus space 0.17 / 0.18–0.20; eye length 0.20–0.21 / 0.19–0.22; eye width 0.16–0.17 / 0.17. Length of antennal segments I–IV: I – 0.25–0.29 / 0.26–0.27, II – 0.65–0.71 / 0.65, III – 0.64–0.66 / 0.61, IV – 0.98–1.03 / 0.87–0.88. Length of labrum 0.80–1.00 / 0.60–1.16; length of labial segments I–IV: I – 0.47–0.55 / 0.46–0.54, II – 0.59–0.65 / 0.56, III – 0.52–0.63 / 0.59– 0.60, IV – 0.53 / 0.50–0.54. Thorax: Pronotum, median length 1.20–1.22 / 1.06–1.09; width at posterior margin 1.65–1.85 / 1.51; width at anterior margin 1.58–1.75 / 1.42–1.49. Scutellar length 0.68–0.86 / 0.54–0.60, width 0.88–1.00 / 0.69–0.80. Length of hemelytra 3.84–4.39 / 2.48–2.61; length of corium 2.35–2.69 / 1.66–1.87; claval commissure 0.57–0.65 / 0.42–0.46.

Distribution. China (Fujian, Guangdong, Jiangxi, Taiwan, Zhejiang) (ZIJൾඇǤ & Zඈඎ 1981); Japan (Ryukyu Islands) (Sඅൺඍൾ*© 1964).

Figures

Fig. 7. Paratype of Cavelerius mishmiensis Slater & Miyamoto, 1963 and labels. a – paratype, dorsal view; b – labels (Photographed by Steve Thurston, AMNH).

Fig. 8. Paratype of Cavelerius obscuratus Slater & Miyamoto, 1963 and labels. a – paratype, dorsal view; b – labels (Photographed by Steve Thurston, AMNH).

Fig. 1. Cavelerius spp. a – C. antennatus Slater & Miyamoto, 1963, dorsal view; b–c – C. tinctus (Distant, 1903), dorsal and ventral view; d – C. minor Slater & Miyamoto, 1963, dorsal view; e–f – C. saccharivorus (Okajima, 1922), dorsal and ventral view.

Fig. 9. Cavelerius saccharivorus (Okajima, 1922). a – male abdominal dorsum, dorsal view; b – basal part of male abdominal dorsum, enlarged; c – pygophore, posterodorsal view; d–g – left paramere, four different aspects; h–i – phallus, dorsal and lateral view; j – sperm reservoir and adjoining portion of phallus, dorsal view.