Sinotilla calopoda Okayasu, 2017

Okayasu, Juriya, 2017, Two new species of the genus Sinotilla Lelej, 1995 (Hymenoptera: Mutillidae), with notes on taxonomic characters, Zootaxa 4294 (2), pp. 151-169 : 152-156

Sinotilla calopoda Okayasu , sp. nov.

( Figs 1–8 , 27–28 )

Diagnosis. FEMALE. This species can be separated from other species of group 2 by the following combination of characters: frons and vertex with weak and long carina medially, which turning into short and shallow groove on frons; propodeal face medially and longitudinally striated; scutellar scale narrow, as broad as diameter of nearby punctures, posteriorly turning into median longitudinal carina extending through propodeal face; S1 black; T1, S2– S3 each with apical narrow band of pale golden setae; T2 and S2 dimly shining due to deeply micro-punctate among punctures. MALE. Unknown.

Description. FEMALE. Color and setae. Head entirely black; gena covered with pale golden setae; vertex transversely, frons and clypeus covered with golden setae; frons and vertex also covered with long, erect black setae mixed with golden setae; setae on malar space dense; eye edged with long erect black setae. Mandible yellowish red with apex black, with long erect golden setae. Scape and pedicel dark reddish yellow; flagellomeres black with ventral face tinged with yellow, entirely covered with pale golden setae; setae on flagellomeres extremely short and fine. Palpi black with reddish tinge, covered with pale golden setae.

Mesosoma entirely yellowish red; dorsal face covered with black setae, long and erect laterally; propodeal face covered with pale golden setae; propleuron and lateral face covered with short pale golden setae, mixed with pale golden, long and erect setae on propleuron and mesopleuron.

Fore leg yellowish red except procoxa, dorsal face of tibia and tarsi black with reddish tinge. Mid- and hind legs black from tarsi to apical half of femur, and mosocoxa apically; basal half of femur, trochanter and most part of mesocoxa yellowish red. Legs covered with pale golden setae; setae on tarsi dense.

Metasoma including S1 entirely black, without bluish metallic luster; T1 densely, T2 antero-laterally and sterna entirely covered with pale golden setae, setae on S2 very sparse; T2 mainly and T4–T5 with black setae; T1 with apical narrow band of dense, appressed pale golden setae; T2 with a large, drop-shaped, basal median spot of dense, appressed pale golden setae; T2 with apical band of dense, appressed, pale golden setae, slightly widened medially; minimum distance between median spot and apical band of T2 1.3 times as maximum breadth of the spot; T2 with golden felt line laterally, lateral length of T2:length of felt line = 100:30; T3 with wide uniform band of dense, appressed pale golden setae; T2 and S2 dimly shining; S2–S3 each with apical narrow band of dense, appressed pale golden setae; S2–S6 each with apical fringe of long pale golden setae. Pygidial area glabrous, edged with pale golden setae laterally.

Structure. In dorsal view, head obtrapezoidal with anterior margin slightly protruding, 1.5 times wider than long; lateral margins strongly convergent behind eye; posterior margin truncate with postero-lateral angle rounded. In lateral view, head longitudinally elongated; frons flat; gena comparatively narrow in lateral view with GOI = 1.57. Surface densely and strongly punctate; frons and vertex closely punctate and longitudinally striated; frons and vertex with weak and long carina medially, which turning into short and shallow groove at the end on frons; genal carina present; minimum distance between mandibular base and hypostomal teeth 5/6 times as malar space; antennal scrobe with weak dorsal carina. Eye oval with ratio between height and maximum breadth = 7:5; protruding from frons. Clypeus with protruding transverse lamellate carina on anterior margin, and with median longitudinal tubercle. Mandible slender with two extremely weak inner denticles. Scape strongly bending; F1 not long and slender, almost equal F2; F3 long, 1.69 times F2; F10 conical with apex compressed but not concave. Maxillary palpus six-segmented; segment 1 extremely short and conical; segment 2 almost baculiform and weakly compressed, broadest medially; segments 3–6 completely compressed; segment 3 strongly widened to apex; segment 4 weakly widened to apex; segments 5 and 6 narrow and straight. Labial palpus four-segmented; segment 1 conical and weakly bending; segments 2–4 compressed; segment 2 strongly widened to apex, wedge-shaped; segment 3 broadest near base and narrowed to apex; segment 4 narrow, baculiform and slightly bending.

Mesosomal width 0.56 × length; lateral margins subparallel, not convergent posteriorly and not constricted; relative width of head:pronotum:mesonotum:propodeum:metasoma = 100:72:67:68:111; dorsal face densely and strongly punctate; lateral face almost entirely smooth; anterior margin of pronotum with a pair of weak and small teeth; lateral margins not crenulate; propodeal face medially and longitudinally striated. Scutellar scale narrow, denticulate, as broad as diameter of nearby punctures; posteriorly turning into median longitudinal carina extending through propodeal face.

Mid- and hind tibiae with a longitudinal row of spines on outer face; claws simple, without denticles.

Metasoma oval and entirely punctate; punctures on T1 small and sparse; punctures on S1 large and dense; punctures on T2 large and dense; T2 broadly and somewhat strongly depressed medially; punctures on S2 dense, separated by about a puncture diameter, antero-laterally sparse and separated by twice the puncture diameter maximally; T2 and S2 not smooth, deeply micro-punctate among punctures; punctures on segments 3–6 small; S1 with median longitudinal carina; S2 slightly concave antero-laterally; S6 with a pair of small teeth on posterior margin. Pygidial area unsculptured, polished and remarkably convergent basally with lateral margins not carinated even apically.

Measurement (n = 1). Body length: 7.7 mm. Head width: 1.9 mm. CED = 33/25. REP = 1/4. RML = 5/12. Ratio between length and width of pedicel (in dorsal view) and F1–F10 = 10:15; 20:20; 16:21; 25:26; 21:20; 18:20; 19:20; 18:18; 17:17; 15:15; 22:15, respectively. Relative length of each segments of maxillary palpus = 13:25:40:40:42:43; relative length of each segments of labial palpus = 11:17:27:37.

MALE. Unknown.

Type material. Holotype: ♀, Sukabumi , Kabandungan , Mekarjaya, Pasirgede, Jawa Barat, Indonesia, 1163m asl., 6°49′46.6″S 106°34′43.4″E, 27.X.2009, Hiraku Yoshitake leg. by beating. [EUM].

Distribution. Indonesia: Jawa Barat.

Etymology. The specific name calopoda refers to two-tone legs of this species.

Remarks. Sinotilla calopoda sp. nov. is known only by holotype and similar to females of S. belokobylskiji , S. lambirensis and S. petina in having the characters of group 2. This new species can be distinguished from S. petina by the golden setae on frons and vertex (black in petina ), the black S1 (yellowish red in petina ), and apical narrow band of setae on S2–S3 (lacking in petina ), and from S. belokobylskiji by the golden setae on frons and vertex (black in belokobylskiji ) and narrow scutellar scale (wide in belokobylskiji ). This new species also differs from lambirensis in having apical narrow band of pale golden setae on T1 (lacking in lambirensis ), the black S1 (yellowish red in lambirensis ), S2 rough and dimly shining among punctures (smooth and shining in lambirensis ), and having median groove on frons (lacking in lambirensis ).

Figures

FIGURES 1 – 3. Sinotilla calopoda sp. nov., ♀, holotype, habitus. 1. Dorsal view; 2. Lateral view; 3. Ventral view. Scales = 2.0 mm.

FIGURES 4 – 8. Sinotilla calopoda sp. nov., ♀, holotype. 4. Head, frontal view; 5. Mesosoma, dorsal view; 6. Pygidial area; 7. Propodeum, dorsal view; 8. Metasoma, dorsal view. Scales: 4 – 7 = 0.5 mm, 8 = 1.0 mm.

FIGURES 27 – 30. Sinotilla spp., ♀♀, head. 27 – 28. S. calopoda sp. nov. 29 – 30. S. ohbayashii sp. nov. 27, 29. Dorsal view; 28, 30. Lateral view. Scales = 0.5 mm.