Trissolcus plautiae (Watanabe), 1893

Talamas, Elijah J., Buffington, Matthew L. & Hoelmer, Kim, 2017, Revision of Palearctic Trissolcus Ashmead (Hymenoptera, Scelionidae), Journal of Hymenoptera Research 56, pp. 3-185 : 43-46

Trissolcus plautiae (Watanabe) Figures 133 , 134-136

Asolcus plautiae Watanabe, 1954: 18, 22 (original description, keyed, synonymized by Hirashima & Yamagishi (1981)); Johnson, 1992: 630 (type information).

Trissolcus plautiae (Watanabe): Kozlov, 1968: 198 (keyed); Kozlov & Lê, 1976: 658 (keyed); Kozlov & Lê, 1977: 504 (keyed); Kozlov, 1978: 629 (description); Hirashima & Yamagishi, 1981: 153 (junior synonym of Trissolcus japonicus (Ashmead)); Kozlov & Kononova, 1983: 86 (description); Kononova, 1995: 92 (keyed); Kononova, 2014: 1421 (keyed); Kononova, 2015: 258 (keyed).

Description.

Female body length: 1.03-1.39 mm (n=26). Male body length: 0.92-1.26 mm (n=20). Body color: head, mesosoma, and metasoma black.

Head. Color of radicle: orange; pale brown. Length of radicle: less than width of clypeus. Color of A1-A6 in female: yellow to brown. Color of A7-A11 in female: dark brown. Number of basiconic sensilla on A6: 0. Number of basiconic sensilla on A7: 2. Facial striae: absent. Number of clypeal setae: 4. Microsculpture on gena directly above mandibular condyle: present. Shape of ventral gena in lateral view: narrow. Genal carina: absent. Malar striae: absent. Sculpture of malar sulcus: antero-posteriorly striate. Orbital furrow: expanding in size ventrally, strongly so at intersection with malar sulcus. Macrosculpture of frons between antennal scrobe and anterior ocellus: absent. Preocellar pit: present. Setation of lateral frons: sparse. Punctation of lateral frons: sparse. Sculpture directly ventral to preocellar pit: absent. Macrosculpture of lateral frons: absent. OOL: separated by less than one ocellar diameter. Hyperoccipital carina: complete. Macrosculpture of posterior vertex: absent. Microsculpture on posterior vertex along occipital carina: present. Anterior margin of occipital carina: coarsely crenulate.

Mesosoma. Epomial carina: present. Macrosculpture of lateral pronotum directly anterior to netrion: striate, striae formed by elongation of cells of netrion sulcus. Netrion sulcus: complete. Pronotal suprahumeral sulcus in posterior half of pronotum: clearly indicated by cells. Location of pronotal suprahumeral sulcus: percurrent. Number of episternal foveae: 4 or more. Course of episternal foveae ventrally: abutting postacetabular sulcus. Course of episternal foveae dorsally: extending to mesopleural pit. Subacropleural sulcus: present. Speculum: smooth; weakly transversely wrinkled. Mesopleural pit: extending ventrally into dorsoventral furrow parallel to mesopleural carina. Mesopleural carina: well defined anteriorly, poorly defined to absent posteriorly. Sculpture of femoral depression: smooth. Setal patch at posteroventral end of femoral depression: present. Microsculpture of anteroventral mesopleuron: present dorsally. Macrosculpture of anteroventral mesopleuron: absent. Postacetabular sulcus: formed by large cells. Mesopleural epicoxal sulcus: formed by large cells; formed by open crenulae. Setation of posteroventral metapleuron: absent. Sculpture of dorsal metapleural area: smooth in anterodorsal corner, coarsely rugose posteriorly; rugose. Posterodorsal metapleural sulcus: poorly defined to absent. Paracoxal sulcus in ventral half of metapleuron: indistinguishable from sculpture to absent; indicated by a line of elongate cells. Anteroventral extension of metapleuron: extending to base of mesocoxa. Metapleural epicoxal sulcus: present as coarse rugae. Mesoscutal humeral sulcus: indicated by a line of cells. Median mesoscutal carina: absent. Macrosculpture of mesoscutum: absent. Pattern of mesoscutal microsculpture: effaced posteriorly. Mesoscutal suprahumeral sulcus: comprised of cells. Length of mesoscutal suprahumeral sulcus: extending to antero-admedian line. Parapsidal line: absent. Notaulus: extending at least 1/3 length of mes oscutum. Median protuberance on anterior margin of mesoscutellum: absent; present. Protruberance on anterior margin of mesoscutellum directly posterior to notaulus: present. Shape of dorsal margin of anterior lobe of axillar crescent: round. Sculpture of anterior lobe of axillar crescent: dorsoventrally strigose. Area bounded by axillar crescent: striate. Macrosculpture of mesoscutellum: absent. Microsculpture on mesoscutellum: absent. Median mesoscutellar carina: absent. Setation of posterior scutellar sulcus: present. Form of metascutellum: single row of cells. Metanotal trough: foveate, foveae occupying more than half of metanotal height. Metapostnotum: invaginated near lateral edge of metascutellum. Length of postmarginal vein: about twice as long as stigmal vein. Color of legs: coxae dark brown, femora yellow to dark brown, elsewhere yellow. Anteromedial portion of metasomal depression: punctate or crenulate.

Metasoma. Longitudinal striae on T1 posterior to basal costae: present. Number of sublateral setae (on one side): 0; 1. Setation of laterotergite 1: absent. Longitudinal striation of T2: present in anterior two-thirds of tergite. Setation of T2: present throughout posterolateral corner. Setation of laterotergite 2: present. Posteriorly directed setae on medial S1: present. Striation of S2: present laterally and in anterior half of median third. Setation of S2: present throughout area not covered by laterotergite.

Diagnosis.

See diagnosis of T. japonicus .

Link to distribution map.

http://hol.osu.edu/map-large.html?id=13208

Material examined.

Paratypes: JAPAN: 2 females, USNMENT00903180-00903181 ( USNM) . Other material: (122 females, 25 males, 1 unsexed) CHINA: 90 females, 23 males, UCRC ENT 142662, 143855, 143907 ( UCRC); USNMENT00872403, 00916690-00916709, 00916795, 00916840-00916859, 00916861-00916894, 00916904-00916917, 00916931-00916951 ( USNM). JAPAN : 8 females, 1 male, 1 unknown, OSUC144489, 398858, 542359, 542414 ( CNCI); OSUC 75843-75848 ( OSUC). RUSSIA : 6 females, UCRC ENT 297000, 297006, 297008, 297011, 329910, 329920 ( UCRC). SOUTH KOREA : 18 females, USNMENT00979227-00979236, 00979238-00979240, 00979242-00979245, 00979252 ( CNCI). TAIWAN : 1 male, OSUC144515 ( CNCI).

Figures

Figure 133. Trissolcus plautiae female (USNMENT 00916880), head, mesosoma, metasoma, lateral view. Scale bars in millimeters.

Figures 134 - 136. Trissolcus plautiae 134 female paratype (USNMENT 00903180), head, mesosoma, metasoma, dorsal view 135 female (USNMENT 00872403), head, anterior view 136 female paratype (USNMENT 00872403), head and mesosoma, anterolateral view. Scale bars in millimeters.