Proceeduiqe of the 7th International Workmg Conference on Stored-product Protection. - Yolume 2 A new species of Trogoderma (Coleoptera: Dermestidae ) found damaging stored grain in China Zhang Shengfang", Liu Y ongpmg! and J mg Xmkun 2 Abstract A new species Trogoderrna uunnaneunsie IS descnbed and a diagnosis IS provided. The species has been found m corn stores m De Qm and Wan Dmg, Yunnan provmce. Trogoderma yunnaneunsis, sp. nov ~ : Length 2.65 - 2. 95mm, width 1. 50 -1. 72mm Color of head and pronotum black, shmmg, with pale patches of sparse wlute hairs on postenor lateral SIdes and basal lobe of pronotum; elytra black with redish-brown maculae; antennae brown; legs dark brown with tarsi quite pale. pubescence of dorsal surface moderately coarse, consisting of black and dark piceous, golden-brown and white hairs; Pubescence 'of ventral surface fmer , dark brown. Head With punctures about twice as coarse as facets of eye, separated by half to two diameters on front, becommg sparser on vertex; Antenna ll-segmented, segments 3 - 4 mmute and subequal; segments 3 - 10 gradually mcreasmg m WIdth; termmal segment a httle longer than WIdth, about as long as segment 9 and 10 combmed (Fig 1). Pronotum With punctures as fme as facets of eye, separated by one and half to three diameters pubescence consisted of black and white hairs, the latter disposed on lateral postenor areas and basal lobe Elytra with punctures much coarser than that of pronotal disk, separated by half to two diameters; maculation pronounced, admidian lme and lateral lme only contmued between submedian band and basal loop, adrrndian hne almost completely bisected loop, adrrudian hne and lateral hne connected by a short transverse band between loop and submedian band Light pubescence disposed on hnes of maculation and consisting of white and golden-brown hairs (FIg.2). Prosternum sparsely punctate, confusedly granulated 1 Plant Quarantme Institute, Mnustry of Agnculture, Beumg 100029, P R Chma 2 Institute of SCIentific & Technical Research on Archives, State Archives Bureau, Benmg 100032 P R Chma laterally; postenor process moderately broad, With SIdes tapenng gradually to apex, medran canna prominant Metasternum With very short stria from mesocoxal cavity on either sides. Abdomen With striae on first stermte.extending obhquely outward from mner margms of metacoxal cavities. Fig. 1. Antenna of Trogoderma yunnaneunsts . Antennal fossa 2 - 2.2 times as long as its Width, extending to base of prothorax, deeply excavated; posterior obhque margm raised, extending as kmfelike canna full length of fossa; floor of fossa glabrous, shinmg and rugosely 1765
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Proceeduiqe of the 7th International Workmg Conference on Stored-product Protection. - Yolume 2
A new species of Trogoderma (Coleoptera: Dermestidae )found damaging stored grain in China
Zhang Shengfang", Liu Yongpmg! and Jmg Xmkun2
Abstract
A new species Trogoderrna uunnaneunsie IS descnbed anda diagnosis ISprovided. The species has been found m cornstores m De Qm and Wan Dmg, Yunnan provmce.
Trogoderma yunnaneunsis, sp. nov
~ : Length 2.65 - 2. 95mm, width 1.50 -1. 72mm
Color of head and pronotum black, shmmg, with palepatches of sparse wlute hairs on postenor lateral SIdes andbasal lobe of pronotum; elytra black with redish-brownmaculae; antennae brown; legs dark brown with tarsi quitepale. pubescence of dorsal surface moderately coarse,consisting of black and dark piceous, golden-brown andwhite hairs; Pubescence 'of ventral surface fmer , darkbrown.Head With punctures about twice as coarse as facets of
eye, separated by half to two diameters on front, becommgsparser on vertex; Antenna ll-segmented, segments 3 - 4mmute and subequal; segments 3 - 10 gradually mcreasmgm WIdth; termmal segment a httle longer than WIdth, aboutas long as segment 9 and 10 combmed (Fig 1).Pronotum With punctures as fme as facets of eye,
separated by one and half to three diameters pubescenceconsisted of black and white hairs, the latter disposed onlateral postenor areas and basal lobeElytra with punctures much coarser than that of pronotal
disk, separated by half to two diameters; maculationpronounced, admidian lme and lateral lme only contmuedbetween submedian band and basal loop, adrrndian hnealmost completely bisected loop, adrrudian hne and lateralhne connected by a short transverse band between loop andsubmedian band Light pubescence disposed on hnes ofmaculation and consisting of white and golden-brown hairs(FIg.2).Prosternum sparsely punctate, confusedly granulated
1 Plant Quarantme Institute, Mnustry of Agnculture, Beumg100029, P R Chma
2 Institute of SCIentific & Technical Research on Archives, StateArchives Bureau, Benmg 100032 P R Chma
laterally; postenor process moderately broad, With SIdestapenng gradually to apex, medran canna prominantMetasternum With very short stria from mesocoxal cavity oneither sides. AbdomenWith striae on first stermte.extendingobhquely outward from mner margms of metacoxal cavities.
Fig. 1. Antenna of Trogoderma yunnaneunsts .
Antennal fossa 2 - 2.2 times as long as its Width,extending to base of prothorax, deeply excavated; posteriorobhque margm raised, extending as kmfelike canna fulllength of fossa; floor of fossa glabrous, shinmg and rugosely
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Proceedings of the 7 th lnternaiumni Working Conference on Stored-product Protection. - Vo!u,me 2
striate.
F1g.2. Left elytron of Trogoderma yunnaneunsis '
Fig. 3. Tergum of morphological abdomiual segment ofTrogoderma yunnaneusis .
Tergite of first periphallic segment with a weeklysclerotized, apical middle area, apical margin with setaeextending across full length, becoming much denser andlonger laterally (Fig, 3), abdominal segment 9 with basalsides much thickened and raisen high, forming trianguleseparately; Abdominal tergite 10 with front margin stronglyemarginated with a few long setae on each sides (Fig, 4).Lateral lobes of phallobase broad and strongly incurved atapex; bridge narrow, transverse, a little thickened at
middle,
Fig. 4. Morphologicalabdominal segment 9 and tergum ofsegment 10 of T rogoderma yunnaneunsts .
Fig.5. Selerite of birsa copuiatrix of Trogodermayunnaneusis .
+: Length 3 .35 ~4.00mm,width 1. 95~ 2.03mm
Antennae with terminal segment a little shorter than
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Proceedings of the 7 th International Workmg Conference on Stored- product Protectwn - Volume 2
Width (Pl i l ) Paired sclentes of bursa copulatnx 0.55 -° 65mm length, curved evenly (FIg. 5).Holotype ~ and allotype ~, paratype 2 ~ ~, 3 ~ ~. De
Qin, Yunnan Province, Aug. 16, 1983, collected by HuangShude; Para types 2~, Wan Ding, Yunnan Provo , May 20,1984, Collected by Liu YongpmgThis species is allied to Tr. oereicolor , but differs from
the later m the maculation on elytra , configuration ofantennae, unique characters of abdominal tergite 9 and 10 inmales.
References
Zhao Yangchang and LI Hongxmg, 1966. Study onTrogoderma in Chma. Journal of Animal Taxology, 3, 3,
245 - 250.Beal, R S., 1954 BIOlogy and Taxonomy of the NearcticSpecies of Trcooderma (Coleoptera: Dermestidae ) .University of Cahforma Pubhshmg, Entomology, 10, 2,35 - 102, 18 figs. , 67 refs. , Berkeley, Califorma.Beal R. S., 1956. Synopsis of the Economic Species ofTrogoderma , Occurnng m the United States withDescnption of a New Species (Coleoptera: Dermestidae ):Annual Entomologist Society of America, 49, 6, 559-566Hinton, H. E., 1945. A Monograph of the BeetlesAssociated with Stored Products, pp. 375 - 401. BritishMuseum (Nat Hist. ), Cormviell Road, S. W. 7.PIC M., 1914. Notes drverses, descriptions et diagnoses.SUIte. E' change, 30, 10 -13.
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