Trissolcus rufiventris (Mayr), 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 : 46-49

Trissolcus rufiventris (Mayr) Figures 137-138 , 139-144

Trissolcus protogyne ( Voegelé) syn. n.; http://bioguid.osu.edu/xbiod_concepts/309567; Morphbank47

Telenomus rufiventris Mayr, 1907: 158 (original description).

Prophanurus Rufiventris (Mayr): Kieffer, 1912: 41, 59 (description, generic transfer).

Dissolcus rufiventris (Mayr): Kieffer, 1926: 124 (description, generic transfer, keyed); Meier, 1940: 79, 80 (description, keyed); Rjachovskij, 1959: 82 (keyed).

Microphanurus anitus Nixon, 1939: 131, 132 (original description, keyed, synonymized by Delucchi (1961)); Delucchi, 1961: 54 (junior synonym of Asolcus rufiventris (Mayr)).

Asolcus rufiventris (Mayr): Masner, 1959: 380 (diagnosis, variation); Delucchi, 1961: 45, 54 (description, synonymy, keyed); Viktorov, 1964: 1014, 1023 (description, keyed); Voegelé, 1964: 28 (keyed); Szabó, 1976: 176 (keyed).

Telenomus rubriventris Szabó, 1959: 169 (original description, synonymized by Kozlov (1968)); Kozlov, 1968: 211 (junior synonym of Trissolcus rufiventris (Mayr)).

Trissolcus rufiventris (Mayr): Viktorov, 1967: 91 (generic transfer, keyed); Safavi, 1968: 415 (keyed); Kozlov, 1968: 199, 211 (description, lectotype designation, keyed); Fabritius, 1972: 31 (keyed); Kozlov & Lê, 1977: 514 (keyed); Kozlov, 1978: 636 (description); Kozlov & Kononova, 1983: 117 (description); Kononova, 1995: 96 (keyed); Koçak & Kilinçer, 2003: 303, 313 (keyed, description); Ghahari, Buhl & Kocak, 2011: 596 (listed); Guz, Kocak & Kilincer, 2013: 87 (description, phylogenetic relationships); Petrov, 2013: 326 (keyed).

Asolcus rufiventris rufiventris (Mayr): Voegelé, 1969: 151 (keyed).

Asolcus rufiventris protogyne Voegelé syn. n., 1969: 151 (original description, keyed, considered a valid species but described as a subspecies).

Description.

Female body length: 0.99-1.24 mm (n=18). Male body length: 1.08-1.24 mm (n=6). Body color: head, mesosoma and T1 reddish brown to black, remainder of metasoma yellow to reddish brown.

Head. Color of radicle: yellow. Length of radicle: less than width of clypeus. Color of A1-A6 in female: yellow to brown. Color of A7-A11 in female: pale to dark brown. Number of basiconic sensilla on A6: 0. Number of basiconic sensilla on A7: 1. 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. Malar striae: absent. Sculpture of malar sulcus: antero-posteriorly striate. Orbital furrow: medially delimited by ridge or carina at midpoint of eye, poorly defined or absent near 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: absent. Sculpture directly ventral to preocellar pit: microsculptured. Macrosculpture of lateral frons: absent. OOL: 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: present. 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: transversely strigose. Mesopleural pit: simple; 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: present, striae weakly developed and perpendicular to long axis of femoral depression. Setal patch at posteroventral end of femoral depression: absent. Microsculpture of anteroventral mesopleuron: present throughout. Macrosculpture of anteroventral mesopleuron: absent. Postacetabular sulcus: formed by large cells. Mesopleural epicoxal sulcus: formed by small punctures. 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: 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. Median mesoscutal carina: absent. Macrosculpture of mesos cutum: 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: absent. Median protuberance on anterior margin of mesoscutellum: absent. Protruberance on anterior margin of mesoscutellum directly posterior to notaulus: present. Shape of dorsal margin of anterior lobe of axillar crescent: acute. Sculpture of anterior lobe of axillar crescent: uncertain, dorsoventrally strigose. Posterodorsal margin of axillular carina: pointed. Area bounded by axillar crescent: smooth. Macrosculpture of mesoscutellum: absent. Microsculpture on mesoscutellum: present throughout. Median mesoscutellar carina: 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: about twice as long as stigmal vein. Color of legs: coxae brown, legs 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): 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. Striation of S2: absent. Setation of S2: present throughout area not covered by laterotergite.

Diagnosis.

Trissolcus rufiventris is usually easily identifiable by the color of the metasoma, which in some cases is bright yellowish-orange in color. This color pattern is not known to us from other species and thus can be used effectively to confirm the identity of this species. However, the metasoma may be dark brown, approaching black, and thus color should not be used to exclude specimens from this species. Although it is less accessible, the most reliable character for T. rufiventris is the presence of a single basiconic sensillum on A7. All other species of Palearctic Trissolcus have either 2 basiconic sensilla on A7 or none.

Link to distribution map.

http://hol.osu.edu/map-large.html?id=3298

Material examined.

Lectotype, female, T. rufiventris : RUSSIA: Rostov Reg., Rostov-na-Donu (Rostow am Don) City , V-1905, reared, I. Vassiliev, NHMW 0005 (deposited in NHMW) . Paralectotypes: RUSSIA: 3 females, 2 males, 1 unsexed, USNMENT00989158-00989159, 01059035-01059037 ( NHMW) . Other material: (30 females, 15 males) ARMENIA: 1 female, USNMENT00979996 ( ZIN). FRANCE : 2 females, USNMENT00896293, 00896330 ( CNCI). ISRAEL : 1 female, USNMENT00896143 ( CNCI). ITALY : 1 female, USNMENT00896204 ( CNCI). MOROCCO : 4 females, 5 males, USNMENT00896091 ( CNCI); USNMENT01059197, 01059200-01059207 ( MNHN). TURKEY : 20 females, 10 males, USNMENT00675860-00675889 ( USNM). TURKMENISTAN : 1 female, UCRC ENT 296994 ( UCRC).

Figures

Figures 137 - 138. T. rufiventris female lectotype (NHMW 0005) 137 head, mesosoma, metasoma, lateral view 138 head, mesosoma, metasoma, dorsal view. Scale bars in millimeters.

Figures 139 - 144. T. rufiventris 139 female (USNMENT 01059199), head, mesosoma, metasoma, dorsolateral view 140 female (USNMENT 01059197), head, mesosoma, ventrolateral view 141 female (USNMENT 00675886), antennal clava, ventral view 142 female (USNMENT 00675886), antennal clava, ventral view 143 female lectotype (NHMW 0005), venation of fore wing, dorsal view 144 female (USNMENT 00989158), head, anterior view. Scale bars in millimeters.