| The barklouse families Stenopsocidae and Amphipsocidae belong to the infraorder Caecilisetae of Psocodea,and they are widely distributed in the world.In the previous study,160 stenopsocid species and 137 amphipsocid species were described in China.Species of Stenopsocidae and Amphipsocidae are fungivorous,mainly feeding on fungi grown on leaves.The present dissertation summarized the research history of Stenopsocidae and Amphipsocidae,the general morphological characters,as well as the biology and ecology of these two families.The biogeography of Stenopsocus and the other five genera is briefly analyzed.The Oriental Region has the richest species diversity of these six genera,and Amphipsocus shows a disjunct distribution pattern.The section of molecular systematics includes two parts.The first part is the intergeneric phylogeny of the family Stenopsocidae,using sequences of three mitochondrial and one nuclear gene fragments.The monophyly of the genus Graphypsocus is supported,but the large genus Stenopsocus is separated into two lineages,with some species clustered with the genus Malostenopsocus.Combining the phylogenetic result and the morphological characters,a new genus,i.e.Neostenopsocus gen.nov.is established in Stenopsocidae,but clarification on the relationship between Stenopsocus and Malostenopsocus needs more samples and data.The second part is the species delimitation of three genera Neostenopsocus,Amphipsocus and Taeniostigma by ABGD and PTP basing on the DNA barcodes.In Neostenopsocus,the result is similar between ABGD and PTP,but it is different in the branch N.variabilis—N.longitudinalis.In total,40%of putative species were recovered in ABGD and PTP are supported by the morphological characters.In Amphipsocus,only six putative species were recovered in both ABGD and PTP,and appr.50%of the putative species are supported by the morphological characters.In Taeniostigma,the results are similar in ABGD and PTP,the contentious point is the branch T.immaculata which is divided into four groups in the result of PTP sh but remains as one group in ABGD and PTP ML;ABGD and PTP suggest the branch T.nigristigma—T.hamata,which include four morphological species,represents a single species.The section of taxonomy deals with the systematics of the family Stenopsocidae,and the genera Amphipsocus and Taeniostigma of the family Amphipsocidae.Totally,135 stenopsocid species in four genera from China are recorded,including 1 new genus,18 new species,2 newly recorded species in China,78 new combinations and 28 new synonyms,among which 52 species are described,with the male and female genitalia illustrated.The new genus is Neostenopsocus.The 18 new species are listed below:N.apibrunneus sp.nov.,N.baltebrunneus sp.nov.,N.balteflavus sp.nov.,N.basilateus sp.nov.,N.brunneus sp.nov.,N.clunibrunneus sp.nov.,N.femoroaureus sp.nov.,N.flavus sp.nov.,N.melandiblus sp.nov.,N.nigris sp.nov.,N.pedicelflavus sp.nov.,N.phaeus sp.nov.,N.tibiobrunneus sp.nov.,N.variabilis sp.nov.,N.ventriflavus sp.nov.,N.wuliangshanensis sp.nov.and N.zhaotongensis sp.nov.There are 47 species of the genus Amphipsocus from China,including 5 new species and 6 new synonyms,among which 16 species are decribed and illustrated.The 5 new species are listed below:A.bannaensis sp.nov.,Amphipsocus rebrum sp.nov.,A.wangi sp.nov.,A.bisetus sp.nov.and A.parcus sp.nov.There are 28 species of the gneus Taeniostigma from China,including 6 new species and 1 new synonym,among which 11 species are decribed and illustrated.The 6 new species are listed below:T.immuculata sp.nov.,T.nigericubita sp.nov.,T.basiflava sp.nov.,T.lactea sp.nov.,T.phaea sp.nov.and T.nigristigma sp.nov..The keys to the Chinese species of these genera are provided. |
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