Phanerotoma macrodentata, Luo & Achterberg & He & Tang & Chen, 2025

Phanerotoma macrodentata sp. nov.

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Fig. 17 View Fig

Diagnosis

Frons punctate-rugose and coriaceous ( Fig. 17C View Fig ); head in lateral view protruding dorsally and ocelli invisible ( Fig. 17D View Fig ); two apical antennal segments of female much longer than six subapical segments ( Fig. 17K View Fig ); vein 1-R1 of fore wing 1.5× as long as pterostigma ( Fig. 17G View Fig ), vein 1-CU1 0.6× as long as vein 2-CU1; hypopygium acute apically, lacking an up-curved triangle or apical spine ( Fig. 17I View Fig ).

Etymology

Named after the long lower tooth of the mandible, from the Greek ‘ makros ’ for ‘long’ and the Latin ‘ dens ’ for ‘tooth’.

Type material

Holotype CHINA – Guangdong • ♀; Guangzhou ; Jul. 1982; ZJUH No. 940156a .

Paratypes (8 ♀♀, 38 ♂♂)

CHINA – Guangdong • 1 ♀; same data as for holotype; ZJUH No. 940156b • 2 ♂♂; same data as for preceding; ZJUH Nos 9310903a , 9310903b • 5 ♂♂; same data as for preceding; Sep.–Oct. 1985; Jianshu Li leg.; ZJUH Nos 860657a to 860657e • 5 ♂♂; Shenzhen ; Oct. 1983; Shengzhen Zhou leg.; ZJUH Nos 911090a to 911090e • 13 ♂♂; same data as for preceding; Sep.–Oct. 1985; Jianshu Li leg.; ZJUH Nos 860653a to 860653m • 1 ♀; same data as for preceding; ZJUH No. 860653n . – Fujian • 13 ♂♂; Zhangzhou ; 5 Sep. 1984; Huangquan Wu leg.; ZJUH Nos 881412a to 881412m • 6 ♀♀; same data as for preceding; ZJUH Nos 881412n to 881412s .

Description

Female

MEASUREMENTS. Length of body 3.2 mm, of fore wing 3.0 mm.

COLOURATION. Yellow; stemmaticum dark brown; frons yellowish brown; mandible apically and ovipositor sheath brown; legs pale-yellow.

HEAD. Width 1.7× median length in anterior view ( Fig. 17E View Fig ) and part of head above eye in lateral view 0.1 × height of eye ( Fig. 17D View Fig ); antenna with 23 segments and 1.2 × as long as fore wing, six subapical antennal segments shortened and cylindrical ( Fig. 17K View Fig ), both apical segments elongate, third, fourth and penultimate segments 1.4, 1.5 and 1.7 × as long as wide in lateral view, respectively; area of stemmaticum mainly granulate; OOL: diameter of posterior ocellus: POL=36: 9: 5; eye 1.3 × as long as temple in dorsal view ( Fig. 17C View Fig ); frons coriaceous and punctate-rugose, slightly depressed, without median carina; vertex granulate and dull; temple granulate matt and coriaceous; face granulate and with distinct median bump ( Fig. 17E View Fig ); clypeus granulate, matt and 0.7× minimum width of face, intertentorial distance 1.7 × minimum width between clypeus and eye, clypeus long erect setose and with 3 indistinct teeth medio-ventrally ( Fig. 17E View Fig ); eye large and in lateral view 1.8 × as wide as temple ( Fig. 17D View Fig ), in anterior view its height 0.6 × minimum width of face; upper condyle of mandible below lower level of eyes ( Fig. 17E View Fig ); malar space 0.9 × as long as basal width of mandible; lower tooth of mandible as long as apical tooth, robust ( Fig. 17L View Fig ).

MESOSOMA ( Fig. 17H View Fig ). Length 1.8 × its width in lateral view; side of pronotum mainly rugose, but dorsally nearly smooth; mesoscutum densely granulate-rugose and matt, densely setose; notauli hardly indicated; scutellar sulcus wide and with eight carinae ( Fig. 17H View Fig ); scutellum triangular, flat, distinctly granulate and matt; metanotum with short median carina anteriorly and small tooth protruding posteriorly; propodeum coarsely reticulate-rugose, with transverse carina, no median carina and latero-posteriorly tuberculate.

WINGS. Fore wing 3.0× as long as its maximum width; length of 1-R1 1.5× as long as pterostigma; r issued relatively close to middle of pterostigma and 0.8× 3-SR; distance between 1-R1 and wing apex 0.3× 1-R1; 2-SR nearly straight ( Fig. 17G View Fig ); SR1 straight; 2-SR+M present; parastigma medium-sized; 1-CU1 0.6 × as long as vein 2-CU1, cu-a inclivous and 0.7× as long as 1-CU1; r:3-SR: SR1= 5: 7: 33; 2-SR: 3-SR: r-m=14: 7: 6; r-m reclivous; 2-M weakly curved ( Fig. 17G View Fig ).

LEGS ( Fig. 17F View Fig ). Hind femur moderately wide and with satin sheen, 4.0× as long as wide and rather widened submedially; hind tibia rather swollen ( Fig. 17A View Fig ); middle tibia with medium-sized ivory blister; hind coxa coriaceous and matt.

METASOMA. ( Fig. 17I–J View Fig ). Carapace elliptical in dorsal view, 1.9 × as long as wide and as long as mesosoma; first and second tergites coarsely and densely longitudinally rugose; second suture wide; third tergite 1.4× as long as second tergite and laterally weakly curved, in lateral view slightly convex anteriorly, in dorsal view convex medially, densely and semi-circularly rugose and rounded ( Fig. 17I View Fig ), lateral lamella hyaline and its margin finely serrate ( Fig. 17I View Fig ), and medio-apically not emarginate; ovipositor sheath narrow and parallel-sided ( Fig. 17J View Fig ), with some long and erect setae; hypopygium apically acute, lacking an up-curved triangle or apical spine ( Fig. 17J View Fig ).

VARIATION. Length of fore wing 2.7–3.0 mm; frons flat or slightly depressed; eye 1.3–1.8 × as long as temple in dorsal view.

Male

Very similar to female, but antennal segments longer and 3–7 subapical antennal segments slender and cylindrical ( Fig. 17B View Fig ).

Host

Acrocercops cremerella Snellen, 1904 ( Gracillariidae ).

Distribution

China (Fujian, Guangdong).