Sinotilla serpa columnata ( Chen, 1957 ),

Okayasu, Juriya, 2018, Taxonomic review of Chin-wen Chen’s species described in the genus Smicromyrme (Hymenoptera: Mutillidae), Acta Entomologica Musei Nationalis Pragae 58 (2), pp. 479-494: 490-492

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Sinotilla serpa columnata ( Chen, 1957 )


Sinotilla serpa columnata ( Chen, 1957)  , comb. nov., stat. nov.

( Figs 19–26View Figs 19–22View Figs 23–26)

Smicromyrme columnata Chen, 1957: 205  , ♁. Type locality: “Kuling [= Guling]” (Jiangxi, China). Holotype: ♁ (TARI), examined.; LELEJ (2005: 58).

Type material examined. HOLOTYPE: ♁, Guling , Lushan, Jiangxi, China,  21.ix.1934, O. Piel leg. ( TARI). PARATYPES: 1♁, Guling, Lushan, Jiangxi, China, 17.ix.1934, O. Piel leg. ( TARI); 1 ♁, Guling, Lushan, Jiangxi, China, 18.ix.1934, O. Piel leg. ( TARI); 1 ♁ ( Figs 19–26View Figs 19–22View Figs 23–26), Chien-Men, Kwangtseh, Fujian, China, 22.–23.viii.1943, T. C. Maa leg. ( TARI).

Diagnosis. Male. This species is similar to Si. hong Lelej, 1995  , Si. runcina ( Zavattari, 1914)  , and Si. trisecta  comb. nov. in having mandible with a weak ventral lobe, but differs in the following combination of characters: mandible beneath weakly excised ( Fig. 25View Figs 23–26; not excised in others: Fig. 39View Figs 37–40); POL/OOL = 0.668–0.863, 0.781 on average (0.8 in Si. hong  ; 0.500–0.646, 0.578 on average in Si. runcina  ; 0.675–0.747, 0.714 on average in Si. trisecta  ); POL/LOD = 2.86–4.27, 3.56 on average (1.76–2.45, 2.17 on average in Si. runcina  ; 2.95–4.07, 3.37 on average in Si. trisecta  ; unknown in Si. hong  ); frons with wide weak longitudinal carina extending from lateral ocellus ( Fig. 24View Figs 23–26; with wide strong carina in Si. trisecta  and probably in Si. hong  : Fig. 38View Figs 37–40); mesosoma yellowish red except propleuron, mesopleuron, metapleuron, and propodeum black (in nominotypical subspecies scutellum, axilla, and metanotum are also black; mesopleuron and metapleuron yellowish red in Si. hong  ; propleuron dorsally and, mesopleuron and metapleuron in dorsal half yellowish red in Si. runcina  ; entirely black in Si. trisecta  : Fig. 34View Figs 33–36); metasoma black (T1 on apical and lateral margins and segment 2 entirely yellowish red in Si. trisecta  : Fig. 34View Figs 33–36); apical lobe of parapenial lobe robust ( Figs 21View Figs 19–22, 29View Figs 27–29; more slender and basally constricted in Si. runcina  and Si. trisecta  : Fig. 35View Figs 33–36; unknown in Si. hong  ).

Female. Unknown.

Distribution. China: Jiangxi, Fujian ( CHEN 1957).

Remarks. One out of two paratypes from Kwangtseh could not be found in TARI. Smicromyrme columnatus  (mainland China) differs from Sinotilla serpa  ( Taiwan; Figs 27–29View Figs 27–29) in yellowish red scutellum, axilla, and metanotum (black in Si. serpa  ). In other respects, these two taxa are identical including male genitalia. They do not have an overlapping distribution and are only very slightly different from each other. Although such variation in mesosomal color is sometimes observed in a single species even in the same geographical area (e.g. Smicromyrme lewisi Mickel, 1935  in the northern part of Honshû and Hokkaidô, Japan; TSUNEKI 1972, TERAYAMA et al. 2011), I treat Sm. columnatus  as a subspecies of Si. serpa  here. Discovery of the female or molecular experiments will give more insight into the relationship between them.

A specimen of Si. runcina  from Sarawak has setal bands on T2 and T3, while specimens from the Malay Peninsula have setal bands on T1–T3. Therefore, the number of setal bands on the metasoma is not useful in separating Si. serpa  and Si. runcina  .


Taiwan Agricultural Research Institute


Tavera, Department of Geology and Geophysics














Sinotilla serpa columnata ( Chen, 1957 )

Okayasu, Juriya 2018

Smicromyrme columnata

LELEJ A. S. 2005: 58
CHEN C. 1957: 205