Trissolcus oobius (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 : 39-40

Trissolcus oobius (Kozlov) Figures 118-119 , 120-127

Trissolcus aglaope (Kozlov & Lê) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3176; Morphbank37

Trissolcus dirrhope (Kozlov & Lê) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3216; Morphbank38

Trissolcus dryope (Kozlov & Lê) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3220; Morphbank39

Trissolcus lampe (Kozlov & Lê) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3251

Trissolcus merope (Kozlov & Lê) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3266; Morphbank40

Trissolcus niceppe (Kozlov & Lê) syn. n.; http://bioguid.osu.edu/xbiod_concepts/3272; Morphbank41

Aporophlebus oobius Kozlov, 1972: 670 (original description); Kononova, 1973: 439, 440 (description, keyed); Kozlov & Lê, 1976: 350 (keyed).

Aporophlebus dirrhope Kozlov & Lê, 1976: 351, 368 (original description, keyed).

Aporophlebus dryope Kozlov & Lê, 1976: 351, 365 (original description, keyed).

Aporophlebus lampe Kozlov & Lê, 1976: 350, 360 (original description, keyed).

Aporophlebus merope Kozlov & Lê, 1976: 350, 359 (original description, keyed).

Aporophlebus niceppe Kozlov & Lê, 1976: 351, 369 (original description, keyed).

Trissolcus oobius (Kozlov): Kozlov & Lê, 1977: 518 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 126 (description); Kononova, 1995: 98 (keyed); Petrov, 2013: 326 (keyed).

Aporophlebus aglaope Kozlov & Lê, 1976: 351, 363 (original description, keyed).

Trissolcus aglaope (Kozlov & Lê) syn. n.: Kozlov & Lê, 1977: 519 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 133 (description).

Trissolcus dirrhope (Kozlov & Lê) syn. n.: Kozlov & Lê, 1977: 519 (generic transfer, keyed); Kozlov, 1978: 638 (description); Kozlov & Kononova, 1983: 134 (description).

Trissolcus dryope (Kozlov & Lê) syn. n.: Kozlov & Lê, 1977: 519 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 132 (description); Kononova, 1995: 98 (keyed); Ghahari, Buhl & Kocak, 2011: 595 (listed).

Trissolcus lampe (Kozlov & Lê) syn. n.: Kozlov & Lê, 1977: 518 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 129 (description).

Trissolcus merope (Kozlov & Lê) syn. n.: Kozlov & Lê, 1977: 518 (generic transfer, keyed); Kozlov, 1978: 637 (description); Kozlov & Kononova, 1983: 124 (description); Kononova, 1995: 98 (keyed).

Trissolcus niceppe (Kozlov & Lê) syn. n.: Kozlov & Lê, 1977: 519 (generic transfer, keyed); Kozlov, 1978: 638 (description); Kozlov & Kononova, 1983: 135 (description).

Description.

Female body length: 0.68-1.04 mm (n=8). Body color: head and mesosoma black, metasoma black to reddish brown.

Head. Color of radicle: pale brown; yellow; brown. Length of radicle: less than width of clypeus. Color of A7-A11 in female: pale brown. Number of basiconic sensilla on A6: 0. Number of basiconic sensilla on A7: 0. Color of A1-A7 in female: yellow; pale brown. Facial striae: absent. Number of clypeal setae: 6. Microsculpture on gena directly above mandibular condyle: absent; 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; weakly transversely strigose. Preocellar pit: absent; present. Setation of lateral frons: sparse. Punctation of lateral frons: absent. Sculpture directly ventral to preocellar pit: microsculptured. Macrosculpture of lateral frons: absent; weakly horizontally striate, striae of antennal scrobe extending to lateral frons. OOL: lateral ocellus and eye without continuous scleritic separation; separated by less than one ocellar diameter. Hyperoccipital carina: absent. Macrosculpture of posterior vertex: absent. Microsculpture on posterior vertex along occipital carina: present. Anterior margin of occipital carina: finely crenulate to smooth.

Mesosoma. Epomial carina: absent. Macrosculpture of lateral pronotum directly anterior to netrion: finely rugulose. 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: 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. 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: present. Microsculpture of anteroventral mesopleuron: present throughout; present dorsally. Macrosculpture of anteroventral mesopleuron: absent. Postacetabular sulcus: formed by small punctures. Mesopleural epicoxal sulcus: formed by open crenulae. 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. Mesoscutal humeral sulcus: present as a simple furrow. Median mesoscutal carina: absent. Macrosculpture of mesoscutum: absent; weakly rugulose posteriorly. 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; indicated only at posterior margin of mesoscutum. Median protuberance on anterior margin of mesoscutellum: absent. Protruberance on anterior margin of mesoscutellum directly posterior to notaulus: 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: dorsoventrally strigose. Posterodorsal margin of axillular carina: round. Area bounded by axillar crescent: smooth. Macrosculpture of mesoscutellum: absent. Microsculpture on mesoscutellum: present throughout; absent; present laterally, absent medially. Median mesoscutellar carina: absent. Setation of posterior scutellar sulcus: absent. 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: shorter than length of stigmal vein. Color of legs: coxae brown, femora and tibiaie yellow to pale brown, elsewhere yellow. Anteromedial portion of metasomal depression: punctate or crenulate; smooth.

Metasoma. Longitudinal striae on T1 posterior to basal costae: present; absent; weakly present. Number of sublateral setae (on one side): 1. Setation of laterotergite 1: absent. Longitudinal striation of T2: absent; faintly present anteriorly. Setation of T2: sparsely present in posterolateral corner. Setation of laterotergite 2: present.

Diagnosis.

Trissolcus oobius shares with T. hyalinipennis a 4-merous antennal clava in females. This character, in combination with a postmarginal vein that is shorter than the stigmal vein, unambiguously seperates it from all Palearctic species. Kozlov described numerous species based on small differences in the length of the postmarginal vein, and we here treat most of them as as junior synonyms. The length of the postmarginal vein varies from nearly absent to approaching the length of the stigmal vein in a continuous gradient such that separation based on arbitrary lengths is not useful for species identification (see Figures 124-127 ).

Material examined.

Holotype, female, T. oobius : RUSSIA: Altay Terr., Kosh-Agach , 17.VI.1964, Kozlov, ZMAS 0130 (deposited in ZIN) . Paratypes of T. oobius : RUSSIA: 4 unsexed, USNMENT00916616-00916619 (ZIN) . Holotype, female, T. aglaope : TURKMENISTAN: Lebap Prov., Repetek , 6.VI.1968, Sugonyaev, ZMAS 0117 (deposited in ZIN) . Paratype of T. oobius : TURKMENISTAN: 1 male, USNMENT00916326 (ZIN) . Holotype, female, T. dirrhope : TURKMENISTAN: Lebap Prov., Halaç (Khalach), 25.VI.1967, ZMAS 0123 (deposited in ZIN) . Paratype of T. dirrhope : TURKMENISTAN: 1 female, USNMENT00916275 (ZIN) . Holotype, female, T. dryope : KAZAKHSTAN: Atyrau (Gurev) Reg., shore, Lake Inder , 11.VII.1974, V. V. Kostjukov, ZMAS 0124 (deposited in ZIN) . Paratype of T. dryope : MONGOLIA: 1 female, USNMENT00916277 (ZIN) . Holotype, female, T. lampe : KAZAKHSTAN: Atyrau (Gurev) Reg., Ural River Floodplain , Inderbor (Inderborskiy), 8.VII.1974, V. V. Kostjukov, ZMAS 0126 (deposited in ZIN) . Holotype, female, T. merope : RUSSIA: Altay Terr., Kosh-Agach , 11.VII.1964, Kozlov, ZMAS 0127 (deposited in ZIN) . Paratype of T. merope : RUSSIA: 1 female, USNMENT00916614 (ZIN) . Paratypes of T. niceppe : (2 females) ARMENIA: 1 female , USNMENT00916279 (ZIN). TURKMENISTAN: 1 female , ZMAS 0129 (ZIN). Other material: (4 females) IRAN: 1 female, USNMENT00896237 (CNCI). ISRAEL : 2 females, USNMENT00896142, 00896145 (CNCI). TURKMENISTAN : 1 female, UCRC ENT 296993 (UCRC).

Comments.

The degree to which longitudinal rugae extend from the basal costae of T1 is variable, ranging from essentially absent to distinctly present. Similarly, anterior T1 may be faintly striate or entirely smooth. Microsculpture on the mesoscutellum varies from present throughout to absent, and in some specimens the microsculpture is only present laterally. Specimens in the type series of T. oobius are larger than the specimens in the type series of species here treated as junior synonyms. These larger specimens have coarser sculpture on the frons and a distinct preocellar pit. In the smallest specimens the preocellar pit is absent and in specimens of intermediary size the pit is absent or very small.

Figures

Figures 118 - 119. T. oobius, female paratype (USNMENT 00916617) 118 head, mesosoma, metasoma, lateral view 119 head, mesosoma, metasoma, dorsal view. Scale bars in millimeters.

Figures 120 - 127. T. oobius 120 female paratype of T. niceppe (USNMENT 00916279), head and mesosoma, ventrolateral view 121 female paratype of T. oobius (USNMENT 00916617), head, mesosoma, T 1 - T 2, dorsolateral view 122 female paratype of T. merope (USNMENT 00916614), head and anterior mesosoma, lateral view 123 female paratype of T. dirrhope (USNMENT 00916275), head, anterior view 124 female paratype of T. merope (USNMENT 00916614), venation of fore wing, dorsal view 125 female paratype of T. dirrhope (USNMENT 00916275), venation of fore wing, dorsal view 126 female paratype of T. niceppe (USNMENT 00916279), venation of fore wing, dorsal view 127 female paratype of T. oobius (USNMENT 00916619), venation of fore wing, dorsal view. Scale bars in millimeters.