Trissolcus viktorovi Kozlov, 1968

Talamas, Elijah J., Buffington, Matthew L. & Hoelmer, Kim, 2017, Revision of Palearctic Trissolcus Ashmead (Hymenoptera, Scelionidae), Journal of Hymenoptera Research 56, pp. 3-185 : 71-74

Trissolcus viktorovi Kozlov Figures 213-216

Trissolcus viktorovi Kozlov, 1968: 198, 206 (original description, keyed); Fabritius, 1972: 30 (keyed); Kozlov & Lê, 1977: 507 (keyed); Kozlov, 1978: 632 (description); Kozlov & Kononova, 1983: 101 (description); Petrov, 2013: 325 (keyed).

Trissolcus Viktorovi Kozlov: Voegelé, 1969: 149 (keyed, emendation).

Tissoleus victorovi Kozlov: Kozlov, 1981: 187 (keyed, spelling errors).

Description.

Female body length: 1.03-1.16 mm (n=16). Male body length: 0.94-1.26 mm (n=6). Body color: head, mesosoma, and metasoma black.

Head. Color of radicle: brown. Length of radicle: less than width of clypeus. Color of A1-A6 in female: brown. Color of A7-A11 in female: brown. Number of basiconic sensilla on A6: 0. Number of basiconic sensilla on A7: 2. .Facial striae: absent. Number of clypeal setae: 6. Microsculpture on gena directly above mandibular condyle: present. Shape of ventral gena in lateral view: bulging. Genal carina: absent. Malar striae: absent. Sculpture of malar sulcus: antero-posteriorly striate. Orbital furrow: uniform in width between midpoint of eye and malar sulcus. Macrosculpture of frons between antennal scrobe and anterior ocellus: absent. Preocellar pit: present. Setation of lateral frons: sparse. Punctation of lateral frons: absent; sparse. Sculpture directly ventral to preocellar pit: microsculptured. Macrosculpture of lateral frons: absent. OOL: separated by less than one ocellar diameter. Hyperoccipital carina: present only posterior to lateral ocellus. Macrosculpture of posterior vertex: absent. Microsculpture on posterior vertex along occipital carina: present. Anterior margin of occipital carina: coarsely crenulate.

Mesosoma. Epomial carina: absent. Netrion sulcus: incomplete. Pronotal suprahumeral sulcus in posterior half of pronotum: undifferentiated from sculpture of dorsal pronotum. 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: transversely strigose. 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: rugose anteroventrally. Patch of striae at posteroventral end of femoral depression: present, striae weakly developed and perpendicular to long axis of femoral depression. Setal patch at posteroventral end of femoral depression: present. Microsculpture of anteroventral mesopleuron: present dorsally. Macrosculpture of anteroventral mesopleuron: absent. Postacetabular sulcus: present as a smooth furrow. Mesopleural epicoxal sulcus: present as a smooth furrow. Setation of posteroventral metapleuron: present. Sculpture of dorsal metapleural area: cells of metapleural sulcus extending posteriorly into rugae. Posterodorsal metapleural sulcus: poorly defined to absent. Paracoxal sulcus in ventral half of metapleuron: indistinguishable from sculpture to absent; absent. Anteroventral extension of metapleuron: not extending to base of mesocoxa. Metapleural epicoxal sulcus: absent or indistinguishable from sculpture. Mesoscutal humeral sulcus: present as a simple furrow; indicated by a line of cells. Median mesoscutal carina: present. Macrosculpture of mesoscutum: absent. Pattern of mesoscutal microsculpture: uniform throughout. Mesoscutal suprahumeral sulcus: comprised of cells. Length of mesoscutal suprahumeral sulcus: about half the length of anterolateral edge of mesoscutum. Parapsidal line: present. Notaulus: extending at least 1/3 length of mesoscutum. Median protuberance on anterior margin of mesoscutellum: present. Protruberance on anterior margin of mesoscutellum directly posterior to notaulus: present. Shape of dorsal margin of anterior lobe of axillar crescent: flat, appearing fused with lateral margin of mesoscutum. Sculpture of anterior lobe of axillar crescent: dorsoventrally strigose. Area bounded by axillar crescent: smooth. Macrosculpture of mesoscutellum: absent. Microsculpture on mesoscutellum: absent. Setation of posterior scutellar sulcus: absent. Form of metascutellum: thick, with only a narrow band of small punctures anteriorly. Metanotal trough: smooth in dorsal half, with line of foveae ventrally. Metapostnotum: invaginated near lateral edge of metascutellum. Length of postmarginal vein: about twice as long as stigmal vein. Color of legs: coxae and femora 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. Setation of laterotergite 1: absent. Longitudinal striation of T2: present in anteromedial portion of the tergite. Setation of T2: sparsely present in posterolateral corner. Setation of laterotergite 2: present. Posteriorly directed setae on medial S1: present. Striation of S2: present in anterior half of sternite not covered by laterotergites. Setation of S2: sparsely present throughout area not covered by laterotergite.

Diagnosis.

T. viktorovi is a distinctive species that can be identified from other species of the thyantae group by the broad gena, the smooth furrow between the hyperoc cipital carina and the dorsal and posterior margins of the compound eye. The median mesoscutal carina is distinct in T. viktorovi and is useful for confirming its identity, but this feature may also be found in other Palearctic species of the thyantae group.

Link to distribution map.

http://hol.osu.edu/map-large.html?id=3330

Associations.

emerged from egg of Dolycoris baccarum (Linnaeus): [ Hemiptera: Heteroptera: Pentatomoidea: Pentatomidae ]; emerged from egg of Eurydema festivum (Linnaeus): [ Hemiptera: Heteroptera: Pentatomoidea: Pentatomidae ]; emerged from Eurydema ventralis Kolenati: [ Hemiptera: Heteroptera: Pentatomoidea: Pentatomidae ]; emerged from egg of Pentatominae Leach: [ Hemiptera: Heteroptera: Pentatomoidea: Pentatomidae ]

Material examined.

Holotype, female: ARMENIA: Tavus Prov., Noyemberyanskiy Dist. , 4.VII.1960, G. Viktorov, ZMAS 0138 (deposited in ZIN) . Paratypes: ARMENIA: 3 females, 3 males, USNMENT00916642-00916647 ( ZIN) . Other material: (13 females, 3 males) PORTUGAL: 3 females, USNMENT00916222, 00916226, 00916241. TURKEY : 10 females, 3 males, USNMENT00916010-00916014, 00916016-00916022, 00916029 ( BMNH).

Figures

Figures 213 - 216. Trissolcus viktorovi 213 female paratype (USNMENT 00916021), head, mesosoma, metasoma, lateral view 214 female paratype (USNMENT 00916647), head, mesosoma, metasoma, dorsal view 215 female paratype (USNMENT 00916010), mesosoma, dorsal view 216 female paratype (USNMENT 00916014), head, anterior view. Scale bars in millimeters.