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Scymnus (Scymnus) najaformis Yu
No full textScymnus (Scymnus) najaformis Yu (Fig. 9)Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on page 171, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Pseudoscymnus truncatulus Yu 1997
No full textPseudoscymnus truncatulus Yu 1997 in Yu et al. 1997 (Yunnan). Distribution. China (Yunnan). Specimen Examined. Type: 1 Ƌ, Yunnan: Heyuan. Other: 1 Ƌ, Yunnan: Jianchuan. Remarks. The specimen from Jianchuan has brown maxillary palpi and the brown base of elytron is very narrow.Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on page 186, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Scymnus (Neopullus) thecacontus Ren and Pang 1993
No full textScymnus (Neopullus) thecacontus Ren and Pang 1993 (Hubei). Distribution. China (Hubei, Yunnan). Specimen Examined. 1 Ƌ, Yunnan: Lijiang: Heyuan. Remarks. The examined specimen differs slightly from the holotype in pronotum with small dark base (distinct in holotype), middle of sipho with many small tubercles (not observed in holotype). It is tentatively included in this species.Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on page 165, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Scymnus (Pullus) ancontophyllus Ren and Pang 1993
No full text<i>Scymnus</i> (<i>Pullus</i>) <i>ancontophyllus</i> Ren and Pang 1993 (Hubei). <p> <b>Distribution.</b> China (Hubei, Sichuan, Yunnan, Shaanxi).</p> <p> <b>Specimens Examined.</b> (7 total), Sichuan: Baoxing: (1), Nigabou (3), Shaanxi: Zhenba (2); Yunnan: Lijiang: (1).</p> <p> <b>Remarks.</b> This species seems varied in coloration. Ren and Pang (1993) described the coloration of this species as head yellowish brown, pronotum brown and elytra black with apex yellow. Only one of the specimens from Shaanxi matches this description; all other specimens differ as follows: pronotum dark brown with the anterior and lateral margins lighter, elytron dark reddish brown with apical 1/8 brown and a large reddish brown disc, suture darker in color or the disc enlarged and confluent with other elytron. The examined specimens do not have the thread­like appendix on the apex of the sipho described by Ren and Pang (1993).</p>Published as part of <i>Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2)</i> on page 180, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Scymnus (Neopullus) camptodromus Yu and Liu
No full textScymnus (Neopullus) camptodromus Yu and Liu (Fig. 2) Scymnus (Neopullus) camptodromus Yu and Liu 1997, in Yu et al. 1997 (Yunnan, Sichuan). Distribution. China (Yunnan, Sichuan). Specimens Examined. Types (22 total), Yunnan: Lijiang: Heyuan (5), Ninglang (5); Sichuan: Baoxing (2). Others (84 total), Yunnan: Lijiang: Heyuan (40), Yunshanping (6); Sichuan: Baoxing: Nibagou (38). Remarks. The illustrations for this species are reproduced here. Yu et al. (1997) stated that the head is brown in the male and dark brown or black in the female. Having examined specimens in addition to the two male types, the head color does not seem sufficient to distinguish the gender, but the shape of the abdominal apex can separate the sexes. This species has been imported into the United States for evaluation as a biological control agent of Adelges tsugae.Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on page 161, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Scymnus (Pullus)
No full text<i>Scymnus</i> (<i>Pullus</i>) sp. Yu <i>et al.</i> 1997. <p> <b>Specimens Examined.</b> 3 ♀, Yunnan: Lijiang: Wenbishan.</p> <p> <b>Remarks.</b> This species is similar to <i>S. (P.) heyuanus,</i> but obvious differences are the more strongly arched longer side of the terminal segment of maxillary palpi, relatively slender and small pronotal marking, elytron with apical 1/6 brown (incised anteriorly). To have confidence that this is a different species than <i>S. (P.) heyuanus,</i> male specimens are needed with the same elytral color pattern as the three females examined.</p>Published as part of <i>Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2)</i> on page 180, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Halyzia straminea
No full text<i>Halyzia straminea</i> (Hope) <p> <i>Coccinella straminea</i> Hope 1831 (Nepal).</p> <p> <i>Halyzia straminea</i>: Mulsant 1950 (India); Mader 1934 (India, Nepal, Sikkim); Liu 1963 (Yunnan); Kapur 1963a (Sikkim); Iablokoff­Khnzorian 1982 (China, Sikkim, India); Booth and Pope 1989; Cao <i>et al.</i> 1992 (Yunnan); Jing 1992 (Yunnan).</p> <p> <b>Distribution.</b> China (Yunnan, Gansu, Tibet), Nepal, India.</p> <p> <b>Specimen Examined.</b> 1 ♀, Yunnan: Lijiang: Wenbishan.</p>Published as part of <i>Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2)</i> on pages 194-195, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Scymnus (Scymnus) unciformis Yu, new species
No full textScymnus (Scymnus) unciformis Yu, new species (Fig. 10) Description. Male. Length 2.80 mm, width 1.80 mm. Form oval with sides nearly parallel at middle, dorsum moderately convex. Head including antennae and mouthparts brown. Pronotum brown, black basal marking extending anteriorly 1/2 pronotal length. Scutellum black. Elytron black; apical 1/6 yellowish brown, margin with black arched. Underside brown with prosternal process dark brown, meso and metathoraces, elytral epipleura, medial anterior margin of first abdominal sternite black. Legs yellowish brown, middle and hind coxae darkish brown. Interocular distance slightly less than 1/2 head width. Innerocular margins nearly parallel, slightly divergent posteriorly. Frons nearly flat, finely, densely punctate. Anterior margin of clypeus very weakly incurvate. Antenna 11segmented, proportions as illustrated (Fig. 10g). Maxillary palpus terminal segment slightly divergent apically, length about 1.3 times width, distal side distinctly oblique. Punctation similar on head and pronotum. Elytral punctation coarser, without rows of gross punctures near suture, pubescence weakly sinuous. Prosternal carinae narrowly separated, slightly convergent anteriorly. Postcoxal line of first abdominal sternite incomplete, slightly arcuate, nearly reaching posterior margin, enclosed area line irregularly, finely punctate, posterior 1/3 smooth. Fifth abdominal sternite hind margin nearly truncate; sixth sternite apex slightly incurvate. Genitalia: Sipho (Fig. 10a) moderately long, Sshaped; siphonal capsule with a long inner process, short outer process; apex of sipho (Fig. 10f) hookshaped, simple, without distinct appendix except membrane on interior of hook. Tegmen (Fig. 10b, c) moderately slender; median piece of tegmen widest at middle, narrowing slightly basally, gradually converging apically to blunt tip, curved upwardly in ventral aspect. Lateral lobes of tegmen shorter than median piece. Distribution. China (Yunnan). Type Series. Holotype: (Ƌ), Yunnan: Lijiang: Heyuan (26.8 N, 100.2 E), 29V1996 (BAAF). Etymology. The specific name refers to the shape of the apex of sipho. Remarks. The new species resembles the previous species Scymnus (Scymnus) najaformis Yu 1997, but differs from the latter by the black elytra with apical 1/6 yellowish brown, slender median piece and lateral lobes in lateral view.Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on pages 171-172, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Clitostethus wenbishanus Yu, new species
No full textClitostethus wenbishanus Yu, new species (Fig. 1) Description. Male. Length 1.70 mm, width 1.20 mm. Form oval, with sides slightly arched, moderately more curved posteriorly, dorsum moderately convex. Color brown, except: mouthparts and antennae yellowish brown; frons yellowish white; pronotum yellowish brown with anterior 2/3 yellowish white; elytra reddish brown, slightly lighter posteriorly with apex narrowly yellow; underside yellow, subgena and gula brown; prosternal process and meso and metathoraces dark brown to black; abdominal sternites brown with yellow on apical sternites; legs yellow. Interocular distance slightly less than 1/2 head width. Innerocular margins strongly arcuate. Frons finely punctate. Clypeus distinctly produced anteriorly, apex very slightly incurvate. Antenna 11segmented, proportions as illustrated (Fig. 1g). Maxillary palpus terminal segment divergent distally, length 1/2 width, apical side slightly oblique. Pronotum punctation similar to head. Elytral punctation coarser; pubescence oriented backward with indistinct wave pattern near apex. Prosternal carinae widely separated, distinctly convergent anteriorly. Postcoxal line of first abdominal sternite incomplete, reaching hind margin of sternite. Area surrounded by line finely punctate, except posterior 1/2 smooth. Hind margin of fifth abdominal sternite truncate, sixth sternite apex broadly arcuate throughout. Genitalia: Sipho (Fig.1a) moderately long, basal 1/2 curved; siphonal capsule with long inner process and short outer process; apex of sipho (Fig. 1b) with 2 membranes. Tegmen (Fig. 1c, d) moderately stout; sides of median piece of tegmen parallel for basal 3/4, then narrowing uniformily to pointed tip in ventral view. Lateral lobes of tegmen about 1/3 length of median piece, with a few long setae at tip. Type Series. Holotype: (Ƌ), Yunnan: Lijiang: Wenbishan (26.8 N, 100.2 E), 13X1996 (BAAF). Etymology. The name refers to the type locality. Remarks. Peng et al. (1998) described three new species from Hainan Island and provided a key to these species and C. sternalis (Pang and Gordon). That key is based solely on the male genitalia and these characters are used in the above key beginning with item 3. Additional characters that distinguish the new from the previously known species include its lighter coloration, the very short terminal segment of the maxillary palpi, and the short lateral lobes of the tegmen with long setae at the tip.Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on pages 158-159, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
Scymnus (Pullus) jaculatorius Yu, new species
No full textScymnus (Pullus) jaculatorius Yu, new species (Fig. 18) Description. Male. Length 1.85 mm, width 1.10 mm. Form oval with sides nearly parallel at middle, dorsum moderately convex. Color black, except basal two segments of antennae, apical margin of terminal segment of maxillary palpi, tarsi, and posterior part of abdomen brown. Interocular distance slightly less than 1/2 head width. Innerocular margins arcuate, divergent posteriorly. Frons finely, densely punctate. Antenna 11 segmented, proportions as illustrated (Fig. 18j). Maxillary palpus terminal segment with arcuate sides, distal side slightly oblique. Pronotum punctation coarser than head. Elytral punctures slightly finer than pronotum, much coarser than head, pubescence arranged in Sform. Prosternal carinae distinctly convergent anteriorly. Postcoxal line of first abdominal sternite arcuate, complete, extending about 2/5 sternite length, enclosed area irregularly punctate, coarser posteriorly, smooth near line. Fifth abdominal sternite hind margin broadly arcuate; sixth sternite apex distinctly emarginate. Genitalia: Sipho (Fig. 18a) relatively slender, basal 2/3 strongly arcuate; siphonal capsule with short outer process, long inner process; simple siphonal apex, without appendix. Tegmen (Fig. 18b, c) characteristic; in ventral aspect, median piece narrowing gradually from base for 5/6 length then sharply to teatshaped tip; in lateral aspect, median piece thickest at basal 1/3. Lateral lobes of tegmen slightly shorter than median piece, with short setae. Distribution. China (Yunnan). Type Series. Holotype: (Ƌ), Yunnan: Lijiang: Yuelongxueshan (26.8 N, 100.2 E), 30IV1997, Yao D. et al. leg. (BAAF). Etymology. The name refers to the shape of the median piece of tegmen in lateral view. Remarks. This species resembles S. (P.) robustibasalis Yu, new species, and S. (Neopullus) ater Kugelann in body size and coloration. It differs from the former by relatively long lateral lobes of tegmen, slender siphonal capsule and overall black dorsal surface. In the latter species, the median piece of tegmen is distinctly shorter than the lateral lobes, and the lateral lobes have long setae. It also resembles Pseudoscymnus tsugae Sasaji and McClure in coloration, but the body of the new species is more slender.Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on pages 181-182, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;
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