Caliroa matsumotonis ( Harukawa, 1919 )

Hara, Hideho & Ibuki, Shinichi, 2020, Caliroa slug sawflies of Japan (Hymenoptera, Tenthredinidae), Zootaxa 4768 (3), pp. 301-333 : 329

Caliroa matsumotonis ( Harukawa, 1919)

( Figs 4S , 5L , 10I, J )

Eriocampoides matsumotonis Harukawa, 1919: 48 ; Takahashi, 1930a: 503.

Caliroa matsumotonis: Takeuchi, 1949: 48 ; Hara & Shinohara, 2013: 380; Lee et al, 2019: 36 .

Caliroa cerasi: Murase, 2010: 57 . Not Linné (1758)

For more synonymy, see Hara & Shinohara (2013).

Additional description: female and male. Clypeus with depth of ventral emargination 0.2–0.3 × median length of clypeus. Malar space distinctly or slightly narrower than facet of eye, without setae. Forewing with basal corner of cell 1M slightly acute. Hind wing of male with apex of cell 1A rather close to wing margin ( Fig. 4S ; fig. 2n in Hara & Shinohara, 2013); section of marginal vein in cell Cu (arrowed in Fig. 4S ) separated from wing margin in posterior fourth. Mesoscutellum with only inconspicuous minute punctures ( Fig. 5L ). Mesoscutellar appendage mostly setose. Dorsum of abdomen not microsculptured, sometimes partly slightly microsculptured.

Material examined. JAPAN: HONSHU—Yamagata Pref.: 1♀, “29, VI, 1942, [Higashine-machi, Yamagataken (in Japanese )], Takeuchi ”, “[Suzuki Kotaro col. (in Japanese )]”.— Hyogo Pref.: 1♀, Amagasaki, Oshima, larva on Cerasus × yedoensis coll. 12. VI. 2009, em. 16. VII. 2009, H. Yoshida .— KOREA: Gyeonggi-do: 7♀ 7♂, Suwon, 19. V. 1935, K. Sato. For more material, see Hara & Shinohara (2013) .

Distribution. Japan: Honshu ( Harukawa, 1919). Korea ( Okamoto, 1938).

In Japan, this species has been known from western and central Honshu ( Harukawa, 1919; Takimoto & Oda, 1940). We found a female collected in Yamagata Prefecture, northern Honshu.

Remarks. In eastern Palearctic and Oriental species, C. matsumotonis is similar to two Chinese species, C. angustata Forsius, 1927 and C. semicincta Wei, 2007 , and five Japanese species, C. nara , C. nire , C. ouensis , C. vaccini (part) and C. zelkovae , in having a black body with colorless reflection, a pale-marked hind tibia, basally dark and apically hyaline or lighter wings and a female hind wing with the joint of vein 1A and crossvein cu-a located basal to the apex of cell 1A. Caliroa matsumotonis is distinguished from C. angustata and C. semicincta by a hind tibia brown yellow to brown, usually gradually darkened apically (fig. 1 in Hara & Shinohara, 2013) [basally white and apically black in the latter two (fig. 1L in Hara, 2011; fig. 1 in Wei & Niu, 2007)] and by a lancet with the areas between serrulae weakly convex ( Fig. 9I, J ; fig. 3 in Hara & Shinohara, 2013) [distinctly convex in the latter two (fig. 4A, B in Hara, 2011; figs 4, 5 in Wei & Niu, 2007)]. For the differences of C. matsumotonis from the six Japanese species, see the key above.

In the key to western Palearctic species by Lacourt (2002), C. matsumotonis goes to the couplet 6, but does not fit either line of the couplet.

In the key to Nearctic species by Smith (1971), the female of C. matsumotonis goes to the couplet 11 containing the females of C. labrata MacGillivray, 1909 and C. obsoleta (Norton, 1867) , but it is distinguished from the latter two by wings basally dark and apically hyaline (fig. 1 in Hara & Shinohara, 2013) [lightly infuscated in C. labrata , uniformly hyaline in C. obsolete ]. Their lancets also are different (compare Fig. 10I, J and fig. 3 in Hara & Shinohara, 2013 with figs 69 and 74 in Smith, 1971). In Smith’s key, the male of C. matsumotonis goes to the couplet 20 consisting of the males of C. liturata MacGillivray, 1909 and C. lorata MacGillivray, 1909 , but it can be distinguished from the latter two by wings basally dark and apically hyaline and the pale areas of legs yellow brown to brown [in the latter two, wings are uniformly, lightly infuscated, sometimes slightly darker basally, and the pale areas of legs are whitish].

Figures

FIGURE 4. Hind wings, dorsal view. A–C, Caliroa cerasi: A, female, Sapporo; B, female, Shimizu; C, male, Finland. D, C. bibaiensis, female, holotype. E, F, C. oishii: E, female, holotype or paratopotype; F, male, Shintoku. G, H, C. ibukii: G, female, holotype; H, male, paratype. I–K, C. vaccini: I, female, paratype; J, female, holotype or paratype; K, male, paratype. L, C. ouensis, female, holotype. M, C. aizankei, female, holotype. N–P, C. staphyleae: N, female, lectotype; O, female, Nakagawa; P, male, paralectotype. Q, R, C. zelkovae: Q, female, lectotype; R, male, Hobara. S, C. matsumotonis, male, Korea. T, C. nire, female, holotype. A, C, D, F, J, K, reversed.

FIGURE 5. Mesoscutellar appendages and adjacent areas, dorsolateral view (A–M) and first to third abdominal terga, dorsolateral view (N–P). A, N, Caliroa cerasi, female: A, Shimizu; N, Sapporo. B, O, C. bibaiensis, female: B, paratype; O, holotype. C, C. oishii, female, Mikasa. D, C. ibukii, female, holotype. E, C. vaccini, female, paratype. F, C. ouensis, female, paratype, Mt. Zao-san. G, C. annulipes, female, Austria. H, C. nara, female, Kamikawa. I, C. aizankei, female, holotype. J, C. staphyleae, female, lectotype. K, C. zelkovae, female, lectotype. L, C. matsumotonis, female, lectotype. M, P, C. nire, female, holotype.

FIGURE 9. Lances and lancets (A, C, E) and middle ventral parts of lancets (B, D, F). A, B, Caliroa aizankei, holotype. C–F, C. staphyleae: C, D, lectotype of C. staphyleae; E, F, holotype or paratype of C. staphylea. 5, fifth serrula. E, F, reversed.

FIGURE 10. Lances and lancets (A, C, E, G, I, K) and middle ventral parts of lancets (B, D, F, H, J, L). A–H, Caliroa zelkovae: A, B, lectotype of C. zelkovae; C, D, holotype of C. zelkova; E, F, Nakagawa, host Ulmus davidiana var. japonica; G, H, Nakagawa, host Prunus domestica. I, J, C. matsumotonis, Higashine. K, L, C. nire, holotype. 1, 5, 7, first (most basal), fifth, seventh serrula. G, H, reversed.