Trissolcus perepelovi (Kozlov)

Talamas, Elijah J., Buffington, Matthew L. & Hoelmer, Kim, 2017, Revision of Palearctic Trissolcus Ashmead (Hymenoptera, Scelionidae), Journal of Hymenoptera Research 56, pp. 3-185 : 41-43

Trissolcus perepelovi (Kozlov) Figures 128-132

Trissolcus deserticola (Kozlov) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3214; Morphbank43

Trissolcus dircus Kozlov & Lê syn. n.; http://bioguid.osu.edu/xbiod_concepts/3215; Morphbank44

Aporophlebus deserticola Kozlov, 1972: 668 (original description); Kozlov & Lê, 1976: 350 (keyed).

Aporophlebus perepelovi Kozlov, 1972: 669 (original description); Kozlov & Lê, 1976: 350 (keyed).

Trissolcus deserticola (Kozlov) syn. n.: Kozlov & Lê, 1977: 518 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 127 (description); Kononova, 1995: 98 (keyed).

Trissolcus perepelovi (Kozlov): Kozlov & Lê, 1977: 518 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 129 (description); Kononova, 1995: 98 (keyed).

Trissolcus dircus Kozlov & Lê syn. n., 1977: 516, 521 (original description, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 120 (description); Radjabi, 2001: 111 (keyed).

Description.

Female body length: 1.00-1.54 mm (n=5). 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: yellow to 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: narrow. Genal carina: absent; present and extending dorsally to vicinity of lower margin eye; present only at base of mandible. Malar striae: absent. 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. Sculpture directly ventral to preocellar pit: absent. Macrosculpture of lateral frons: absent; horizontally striate ventrally, striae of antennal scrobe extending to lateral frons. OOL: separated by less than one ocellar diameter. Hyperoccipital carina: absent. Macrosculpture of posterior vertex: absent. Microsculpture on posterior vertex along occipital carina: present..

Mesosoma. Epomial carina: absent. 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: undifferentiated from sculpture of dorsal pronotum. Number of episternal foveae: 0. Subacropleural sulcus: present. Speculum: smooth. Mesopleural pit: simple; extending ventrally into dorsoventral furrow parallel to mesopleural carina. Mesopleural carina: absent; well defined anteriorly, poorly defined to absent posteriorly. Sculpture of femo ral depression: smooth. Patch of striae at posteroventral end of femoral depression: absent; present, striae weakly developed and perpendicular to long axis of femoral depression. Setal patch at posteroventral end of femoral depression: absent; present. Microsculpture of anteroventral mesopleuron: present dorsally. Macrosculpture of anteroventral mesopleuron: absent. Postacetabular sulcus: formed by small punctures; present as a smooth furrow. Mesopleural epicoxal sulcus: formed by open crenulae; present as a smooth furrow. Mesofurcal pit: absent. Setation of posteroventral metapleuron: absent. Sculpture of dorsal metapleural area: absent. Posterodorsal metapleural sulcus: present as line of foveae. Paracoxal sulcus in ventral half of metapleuron: absent. Anteroventral extension of metapleuron: not extending to base of mesocoxa. Metapleural epicoxal sulcus: absent or indistinguishable from sculpture; present as coarse rugae. Mesoscutal humeral sulcus: present as a simple furrow. Median mesoscutal carina: absent. 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: absent. Notaulus: absent. Median protuberance on anterior margin of mesoscutellum: absent. 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: absent. Posterodorsal margin of axillular carina: round. Area bounded by axillar crescent: smooth. 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 equal to length of stigmal vein. Color of legs: coxae dark brown, femora yellow to dark brown, elsewhere yellow. Anteromedial portion of metasomal depression: smooth.

Metasoma. Longitudinal striae on T1 posterior to basal costae: absent. Number of sublateral setae (on one side): 1. 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.

Diagnosis.

Trissolcus perepelovi can be distinguished by the distinctly bulging ventral mesopleuron, the absence of episternal foveae, striation on T2 that is limited to the anteromedial portion of the tergite, and the smooth area on the frons between the antennal scrobe and the median ocellus. Variability occurs in the extent to which the microsculpture on the frons is effaced. In the paratypes of T. deserticola and T. dircus that we examined, the area does not extend to the inner margins of the compound eyes, whereas in the type series of T. perepelovi it may either extend to the margin of the compound eye or be separated by a patch of microsculpture. The expanded smooth area in the type series of T. perepelovi corresponds to a reduction in surface sculpture of the gena and reduction in the size of the genal carina, which are much more pronounced in the paratypes of T. deserticola and T. dircus . As in many other species of Trissolcus , the color of the antennal segments preceding the clava is not stable and A3-A6 vary from yellow to brown. Similar to T. semistriatus and T. comperei , the extent to which the striae of the antennal scrobe extend onto the ventral frons is variable within this species. The paratype of T. dircus shows definitive striation on the ventral frons, whereas this striation is very weak in the type series of T. perepelovi and absent in the paratype of T. deserticola .

Link to distribution map.

http://hol.osu.edu/map-large.html?id=3287

Material examined.

Holotype, female, Aporophlebus perepelovi : MONGOLIA: Bayanhongor Prov., buckwheat / saxaul, 24-35km E Dzamiin Bilgihi (Talin-Bilgekh) Spring , 17.VIII.1969, M. Kozlov, ZMAS 0131 (deposited in ZIN) . Paratypes: MONGOLIA: 3 females, USNMENT00916338-00916339, 00916615 (ZIN) . Holotype, female, Trissolcus dircus TURKMENISTAN: Lebap Prov., 70km NW Türkmenabat (Chardzhou), 31.V.1965, M. Kozlov, ZMAS 0122 (deposited in ZIN) . Paratype of T. dircus : TURKMENISTAN: 1 female, USNMENT00916278 (ZIN) . Holotype, female, Aporophlebus deserticola : TURKMENISTAN: Lebap Prov., 70km NW Türkmenabat (Chardzhou), 30.V.1965, M. Kozlov, ZMAS 0121 (deposited in ZIN) . Paratype of A. deserticola : TURKMENISTAN: 1 female, USNMENT00916325 (ZIN) .

Figures

Figures 128 - 132. T. perepelovi 128 female paratype (USNMENT 00916339), head, mesosoma, metasoma, lateral view 129 female paratype of T. dircus syn. n. (USNMENT 00916278), head and mesosoma, dorsal view 130 female paratype (USNMENT 00916338), mesosoma, dorsal view 131 female paratype of T. dircus syn. n. (USNMENT 00916278), head, anterior view 132 female paratype (USNMENT 00916338), head, anterolateral view. Scale bars in millimeters.