Trimorus haniyasu, Komeda & Mita & Yamagishi, 2018

Komeda, Yoto, Mita, Toshiharu & Yamagishi, Kenzo, 2018, Three new brachypterous species of Trimorus Foerster (Hymenoptera, Scelionidae) from Japan, Journal of Hymenoptera Research 63, pp. 15-32 : 17-18

Trimorus haniyasu sp. n.

Figs 3 ; 7 ; 8

Diagnosis.

Frons shallowly punctate. Mandible subtridentate, with anterior and posterior large teeth and median small tooth. Mesoscutum and mesoscutellum densely deeply punctate. Postacetabulum rugulose-densely deeply punctate. T3 deeply punctate. In female, A3 longest among A2-6; mesoscutum and mesoscutellum flat; fore and hind wings reaching apical margin of T3; T1 without horn. In male, A5 about twice as long as wide and about 1.8 times as long as tyloid; mesoscutum and mesoscutellum convex; fore wing far exceeding to apical mesosoma; hind wing exceeding to apical mesosoma.

Description. Female (n = 2): Length = 1.83-2.00 mm.

Color (Fig. 3A, B ). Body mainly black-dark brown; A1-A6 and mandibles brown and legs excluding coxae yellow.

Head. FCI = 1.09-1.13; LCI = 1.62-1.74; DCI = 1.83-1.89; HW/IOS = 1.66-1.76; head about 1.2 times as wide as mesosoma (HW/TSL = 1.18-1.28). Frons (Fig. 7A ) shallowly punctate with dense setae; frontal patch absent; central keel completely present; antennal scrobe smooth without setae; interantennal process (Fig. 3B ) rounded with sparse setae. Vertex shallowly punctate with dense setae; POL as long as OOL (POL/OOL = 1.00); OOL about 1.6 times as long as LOL (OOL/LOL = 1.50-1.67); hyperoccipital carina absent; vertex patch present, rugulose. Eyes with sparse setae. Malar region costate; facial striae expanding to middle level of eye; orbital carina extending to top level of eye. Gena costate-punctate with dense setae; genal patch absent. A1 (Fig. 7B ) about 6.3 times as long as radicle (A1/r = 6.00-6.60), about 10.5 times as long as A6 (A1/A6 = 10.00-11.00), about 1.9 times as long as clava (A1/cl = 1.07-1.10); A2 2.3 times as long as A6 (A2/A6 = 2.33); A3 longest among A2-6, about 2.7 times as long as A6 (A3/A6 = 2.67); A4 about 2.2 times as long as A6 (A4/A6 = 2.00-2.33); A5 as long as A6 (A5/A6 = 1.00). Mandible tridentate, with anterior and posterior large teeth and median small, tubercular tooth.

Mesosoma. Pronotal suprahumeral sulcus foveolate; epomial carina incompletely present; cervical pronotal area rugulose-densely deeply punctate without setae; lateral pronotal area smooth-rugose. Mesoscutum (Fig. 7C ) about 1.7 times as wide as long (TSL/ML = 1.60-1.73) flat, densely deeply punctate, with dense setae; mesoscutal suprahumeral sulcus absent; mesoscutal humeral sulcus weakly present; antero-admedian line absent; notauli weakly present. Mesoscutellum about 2.2 times as wide as long (SW/SL = 2.14-2.33); flat, densely deeply punctate with dense setae; scutoscutellar sulcus foveolate; axillular carina present, with weakly tooth; mesoscutellum without median spine; posterior scutellar sulcus foveolate. Femoral depression (Fig. 7D ) smooth in upper half, transversely costate in lower half; mesopleural carina present; anterior rows of foveae of mesopleural carina absent; posterior rows of foveae of mesopleural carina absent; postacetabular sulcus absent; postacetabulum rugulose-densely deeply punctate with dense setae; postacetabular patch absent; sternaulus absent; mesepimeral sulcus absent; speculum transversely costate; prespecular sulcus weakly foveolate; transpleural sulcus absent. Metanotal trough foveolate; metascutellum densely deeply punctate; metascutellar carina present; metanotal spine present, short, blunt. Metapleural sulcus sulcate; dorsal metapleural areas smooth; ventral metapleural areas smooth; paracoxal sulcus present; metapleural epicoxal sulcus weakly present; metapleural epicoxal carina incomplete; metapleural triangle smooth; prespiracular propodeal area narrow, modified to small teeth; lateral propodeal carina present; lateral propodeal area densely deeply punctate; metasomal depression densely deeply punctate; plica present; posterior propodeal projection modified to shortly sharp spine; plical area narrow, densely deeply punctate with dense setae; legs(Fig. 3A, B ) elongate. Fore wing (Fig. 3A, B ) short, reaching posterior edge of T3, 2 times as wide as mesoscutum (TSL/WW = 2.00-2.05); marginal vein 5 times as long as stigmal vein (m/st = 5.00). Hind wing short, reaching posterior edge of T3, about 4.2 times as wide as length of marginal cilia at widest point (HWW/HWS = 4.00-4.25).

Metasoma. T1 about 0.6 times as long as T1+T2 length (T1W/T1+T2L = 0.56-0.57), longitudinally costate. T2 longitudinally costate; basal depressions on T2 present; lateral patch of T2 present, with dense setae. T3 (Fig. 7E ) about 1.3 times as wide as long (T3W/T3L = 1.26-1.33), about 1.3 times as wide as mesoscutum (T3W/TSL = 1.24-1.33), deeply punctate with dense setae; T3 sculpture sparser medially; basal depressions on T3 absent; lateral patch of T3 absent; posterodorsal patch of T3 absent; apical setae on T3 absent. S3 (Fig. 7F ) deeply punctate with dense setae; basal depressions on S3 absent. T4 punctate with dense setae; median patch on T4 absent; lateral patch of T4 absent. T5 punctate with dense setae; lateral patch of T5 absent. T6 smooth; lateral patch of T6 present, imbricate, with dense setae.

Male (n = 3): Length=1.88-1.98 mm (m = 1.93); A1-2 (Fig. 3C, D ) brown. Head wider than female (FCI = 1.17-1.26, m = 1.22); LCI = 1.56-1.70 (m = 1.62); DCI = 1.96-2.00 (m = 1.97); HW/IOS = 1.55-1.64 (m = 1.60); HW/TSL = 1.16-1.23 (m = 1.20). Frons (Fig. 8A ) punctate with dense setae: antennal scrobe smooth-costate without setae. Vertex costate-punctate with dense setae; OOL longer (POL/OOL = 0.91-1.00, m = 0.94; OOL/LOL = 2.00-2.75, m = 2.32); vertex patch absent. Ocelli more developed than female. Facial striae expanding to 3/4 of eye. Gena costate with dense setae. A1/r = 4.50-5.00 (m = 4.67); A5 (Fig. 8B ) about twice as long as wide (A5L/A5W = 1.83-2.20, m = 2.01); A5 about 1.9 times as long as tyloid (A5L/ty = 1.83-2.00, m = 1.89). Cervical pronotal area rugulose without setae. Mesoscutum (Fig. 8C ) longer (TSL/ML = 1.41-1.48, m = 1.44), convex; notauli incompletely present. Mesoscutellum longer (SW/SL = 2.00-2.14, m = 2.07), convex, densely deeply punctate with dense setae. Paracoxal sulcus (Fig. 8D ) sulcate-foveolate; metapleural epicoxal sulcus sulcate; metapleural epicoxal carina completely present; prespiracular propodeal area larger than female, modified to small teeth. Fore wing (Figs 3C, D ) long, far exceeding to apical mesosoma, wider than mesoscutum (TSL/WW = 0.71-0.73, m = 0.72); marginal vein about 4.2 times as long as stigmal vein (m/st = 4.00-4.44, m = 4.19). Hind wing long, exceeding to apical mesosoma, about 6.4 times as wide as length of marginal cilia at widest point (HWW/HWS = 6.20-6.60, m = 6.40). T1W/T1+T2L = 0.44-0.45 (m = 0.45); T2 longitudinally costate with dense setae laterally; lateral patch of T2 present, imbricate. T3W/T3L = 1.31-1.36 (m = 1.33); T3 narrower (T3W/TSL = 1.07-1.09, m = 1.08); sculpture of T3 (Fig. 8E ) sparser than female; posterodorsal patch of T3 present, imbricate. S3 (Fig. 8F ) deeply punctate with dense setae. Lateral patch of T4 present, imbricate.

Material examined.

Holotype: Aichi pref.: Kita-Shitara dist. , Shitara town , Uradani (Beech forest), alt. 900m, 13-19. VI. 1994, K. Yamagishi leg., 1♀ (YPT) [ELMU] . Paratypes: Same locality as the holotype , 16-22. V. 1994, K. Yamagishi leg., 1♂ (EmT) [ELMU]; 6-12. VI. 1994, 2♂ (YPT) [ELKU]; 6-12. VI. 1994, 1♂ (MT) [ELMU]; 13-19. VI. 1994, 1♀ (YPT) [ELKU]; 10-16. X. 1994, 1♂ (PT) [ELMU].

Distribution.

Japan (Honshu: Aichi).

Etymology.

The species named after Haniyasu, a Japanese god of the soil.

Remarks.

Among eastern Palearctic Trimorus species, the female of this species is similar to T. mirificus Kozlov & Kononova, 2000 and T. angulator Kozlov & Kononova, 2000 in shortened wings that reach T3. However, it differs from both species in sculpture of frons (shallowly punctate in T. haniyasu ; along to central keel smooth and other part costate in T. mirificus ; dorsally reticulate, ventrally smooth T. angulator ), mesoscutum (densely and deeply punctate in T. haniyasu ; reticulate in T. mirificus and T. angulator ) and T3 (deeply punctate in T. haniyasu ; costate and granulate in T. mirificus ; reticulate in T. angulator ). In male, antenomeres about twice as long as wide in T. haniyasu , but about 5 times as long as wide in T. mirificus .

Figures

Figure 3. Trimorus haniyasu sp. n. A female, dorsal view B female lateral view C male, dorsal view D male lateral view. Scale bars: 1 mm.

Figure 7. Trimorus haniyasu sp. n., female. A head, frontal view B Antennae C mesosoma, dorsal view D mesosoma, lateral view E metasoma, dorsal view F metasoma, ventral view.

Figure 8. Trimorus haniyasu sp. n., male. A head, frontal view B A 5, lateral view C mesosoma, dorsal view D mesosoma, lateral view E metasoma, dorsal view F metasoma, ventral view.