Dasyhelea silvatica Wang, Zhang & Yu, 2014
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publication ID |
https://dx.doi.org/10.3897/zookeys.961.53882 |
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lsid:zoobank.org:pub:791CCFC6-D911-49F1-92E4-C6CA154182E5 |
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https://treatment.plazi.org/id/260366E4-6EBF-5F72-B1CD-20E153EDD77E |
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Dasyhelea silvatica Wang, Zhang & Yu, 2014 |
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Dasyhelea silvatica Wang, Zhang & Yu, 2014 Figures 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3
Dasyhelea (Dasyhelea) silvatica Wang, Zhang & Yu, 2014: 312 (male and female, China).
Material examined.
3 males with pupal exuviae, 4 females with pupal exuviae, 3 fourth instar larvae, 2 larval exuviae. Xiaojiawan Village, Xinpu New District, Zunyi City, Guizhou Province, China, 27°43'22.83"N, 107°04'27.62"E, 7.VII.2018, alt. 866 m, Chen Duan leg. 2 larvae examined by SEM. Same data as above.
Descriptions.
Fourth instar larva (Fig. 1A-J View Figure 1 ). Head capsule light brown, long, thin (Fig. 1A, B View Figure 1 ); chaetotaxy as in Fig. 1A View Figure 1 . HL 0.25-0.27 (0.26, N = 2) mm; HW 0.16-0.17 (0.16, N = 2) mm; HR 1.56-1.58 (1.57, N = 2); SGW 0.07-0.08 (0.08, N = 2) mm; SGR 0.50-0.52 (0.49, N = 2). Antenna (Fig. 1C View Figure 1 ) short, cylindrical. Anterior portion of palatum (Fig. 1C View Figure 1 ) with four pairs of campaniformia sensilla; posterior portion with three pairs of coeloconica sensilla, two simple, one serrate (Fig. 1C, D View Figure 1 ); messors (Fig. 1E View Figure 1 ) well developed, stout, bisegment; scopae (Fig. 1E View Figure 1 ) well developed with elongate, strong pointed teeth. Mandible (Fig. 1B, C, F View Figure 1 ) stout, with four teeth, apical tooth more elongated, proximal tooth minute; MDL 0.07 (N = 2) mm, MDW 0.01 (N = 2) mm. Maxilla (Fig. 1C, F View Figure 1 ) well sclerotized; galeolacinia (Fig. 1C View Figure 1 ) with concentrated flap-like papillae, short seta; maxillary palpus (Fig. 1C, F View Figure 1 ) cylindrical, with seven or eight apical papillae. Hypostoma (Fig. 1F View Figure 1 ) with three large mesal teeth, flanked with four strong, lanceolate lateral teeth each side. Lacinial sclerite 1 with one seta; lacinial sclerite 2 without seta (Fig. 1F View Figure 1 ). Epipharynx (Fig. 1H-J View Figure 1 ) strongly sclerotized, dorsal comb moderately wide, round, subequally elongate, the middle of trailing edge with a large number of spines on the semicircular transparent membranous structure; lateral arms stout, elongate, with two auxiliary sclerites; LAW 0.10-0.13 (0.12, N = 2) mm, DCW 0.03-0.04 (0.04, N = 3). Hypopharynx (Fig. 1H, I View Figure 1 ) stout, heavily sclerotized, posterior comb straight with fringe, labium sclerotized. Thoracic pigmentation diffused, pale brown. Abdominal segments whitish, with diffused pale brown pigmentation. Caudal segment (Fig. 1G View Figure 1 ) with long stout hooks with pointed tips.
Pupa (Fig. 2A-J View Figure 2 ). Male. Total length 2.51-2.71 (2.63, N = 3) mm. General coloration of exuviae pale brown. Head: dorsal apotome (Fig. 2A View Figure 2 ) 2.15 × broader than long, apex rounded, surface covered with brown rounded tubercles, anterior margin straight, lateral margin smooth, with three anterior wrinkles; apotome sensilla (Fig. 2A View Figure 2 ): DA-1-H elongate, thin seta, insert on well-developed tubercle, DA-2-H sensillum campaniform at base; disc surface covered by stout, rounded spinules; DAL 0.12-0.13 (0.13, N = 2) mm, DAW 0.26-0.29 (0.28, N = 2) mm, DAW/DAL 2.15-2.25. Respiratory organ apex dark brown, 7.6 × longer than broad, with circular fold, 12 apical, five lateral pores; ROL 0.22-0.25 (0.23, N = 3) mm, ROW 0.03 (0.03, N = 3) mm; pedicel pale brown, short, length 0.01 mm, ROP/ROL 0.05-0.07 (0.05, N = 3). Mouthparts with mandible, lacinia absent; two clypeal/labrals (Fig. 2C View Figure 2 ), CL-1-H and CL-2-H medium-sized, thin setae; two ocular sensilla, O-1-H long, thin seta, O-2-H campaniform sensillum (Fig. 2C View Figure 2 ); metathoracic sensilla (Fig. 2D View Figure 2 ): M-1-T and M-2-T campaniform sensilla; M-3-T long, thin seta. Tergite 1 (Fig. 2D View Figure 2 ) setae as follows: D-2-I papilla; D-4-I, D-7-I campaniform sensilla; L-1-I, L-2-I, L-3-I medium-sized, thin setae; two anterolateral sensilla (Fig. 2E View Figure 2 ): AL-1-T long, thin seta, AL-2-T medium-sized, thin seta; two anteromedial sensilla (Fig. 2E View Figure 2 ): AM-1-T, AM-2-T medium-sized, thin setae. Cephalothorax surface with small rounded tubercles, cephalothorax length 0.78-0.83 (0.80, N = 3) mm, width 0.59-0.64 (0.62, N = 3) mm. Cephalothoracic sensilla as follows (Fig. 2F View Figure 2 ): three dorsal setae, D-1-T and D-5-T short, thin setae, D-3-T campaniform sensillum, SA-2-T supra-alar campaniform sensillum. Cephalothoracic sensilla as follows: three dorsolateral cephalic sclerite sensilla (Fig. 2G View Figure 2 ), DL-1-H and DL-3-H medium-sized, thin setae, DL-2-H campaniform sensillum. Abdomen covered with short, stout spinules on anterior, posterior margin. Segment 4 (Fig. 2H View Figure 2 ) with sensillar pattern as follows: D-2-IV short, stout seta; D-4-IV and D-7-IV campaniform sensilla, D-8-IV long, thin setae, all located on flattened tubercles; L-1-IV long, stout seta, L-2-IV short, thin seta, L-3-IV short, stout seta, L-4-IV short, thin seta, all located on triangular tubercles; V-6-IV and V-7-IV short, stout setae, also located on flattened tubercles. Segment 9 (Fig. 2B View Figure 2 ) 1.01 × longer than wide, length 0.20-0.22 (0.21, N = 3) mm, width 0.21-0.22 (0.22, N = 3) mm; ventral and dorsal surfaces with many spinules; TP triangular, elongated, acute, length 0.03 (0.03, N = 3) mm.
Female. Similar to male with usual sexual differences. General coloration of exuviae pale brown, except dorsolateral cephalic sclerite brown. Dorsal apotome (Fig. 2I View Figure 2 ), DAL 0.12-0.13 (0.13, N = 2) mm, DAW 0.26-0.29 (0.27, N = 2) mm, DAW/DAL 2.14-2.26 (2.20, N = 2). Cephalothorax length 0.83-1.07 (0.95, N = 2) mm, width 0.66-0.80 (0.72, N = 2) mm. ROL 0.23-0.27 (0.25, N = 2) mm, ROW 0.03 (0.03, N = 2) mm; pedicel length 0.01 (N = 2) mm, ROP/ROL 0.04 (0.04, N = 2). Segment 9 (Fig. 2J View Figure 2 ) length 0.18-0.23 (0.21, N = 2) mm, width 0.22-0.23 (0.23, N = 2) mm; ventral surface with many spicules, single funnel-like structure medially. TP triangular, elongated, pointed (Fig. 2J View Figure 2 ).
Redescription of adults
(Fig. 3A-T View Figure 3 ). Male (Fig. 3A-J View Figure 3 ). Head. Brown. Frontal sclerite nearly round, with long, slender ventral projection (Fig. 3A View Figure 3 ). Eyes (Fig. 3B View Figure 3 ) contiguous, abutting medially for length of 1.0 ommatidia, with interfacetal hairs. Antennal flagellum (Fig. 3C View Figure 3 ) brown, flagellomere 13 with apical projection; AR 1.23. Clypeus (Fig. 3D View Figure 3 ) with five pairs of setae. Palpus (Fig. 3E View Figure 3 ) brown; third segment slender, PR 2.67, the length almost the sum of the fourth and fifth segments. Lengths of palpus segments in ratio of 10: 15: 30: 18: 17.
Thorax. Scutum shallow, scutellum yellow, with ten stout setae. Legs light brown, hind tibial comb with seven spines (Fig. 3F View Figure 3 ); foreleg TR 2.30, midleg TR 2.40, hind leg TR 2.46. Wing length 1.23 mm, width 0.40 mm, CR 0.50; wing membrane hyaline, densely covered with microtrichia, cubital fork at same level of distal portion of second radial cell. Halter light brown.
Abdomen. Brown. Genitalia: tergite 9 nearly trapezoidal with prominent, long with apical stout seta, apico-lateral processes. Posteromedial margin of sternite 9 with inconspicuous projection, Gonocoxite stout, 1.73 X longer than greatest width, gonostylus slender (Fig. 3G, H View Figure 3 ). Aedeagus (Fig. 3G, I View Figure 3 ) without median process, posterolateral arm symmetry, each arm tapers from the proximal portion to the distal portion, apex of arm curving inwards, arch high. Parameres (Fig. 3G, J View Figure 3 ) separate, with median lobe short, thin, lateral lobe curve, stout gradually.
Female (Fig. 3K-T View Figure 3 ). Head. Frontal sclerite oval, with long, slender ventral projection (Fig. 3K View Figure 3 ). Eyes (Fig. 3I View Figure 3 ) contiguous. Antennal flagellum (Fig. 3M View Figure 3 ) brown, with sculpture, flagellomere 13 with apical projection; AR 1.01. Clypeus (Fig. 3N View Figure 3 ) with five pairs of setae. Palpus (Fig. 3O View Figure 3 ) brown; third segment slender, PR 2.70, lengths of palpus segments in ratio of 3: 6: 14: 6: 8.
Thorax. Wing length 1.29-1.34 (1.22, N = 2) mm, width 0.51-0.54 (0.53, N = 2) mm, CR 0.48 (Fig. 3P View Figure 3 ). Hind tibial comb with ten spines (Fig. 3Q View Figure 3 ); foreleg TR 2.02, midleg TR 2.30, hind leg TR 2.38.
Abdomen. Similar to male. Subgenital plate (Fig. 3R, S View Figure 3 ) star-shaped, arch high, inner arch with a pair of processes. Spermatheca long ovoid (Fig. 3R, T View Figure 3 ), diameter 82 μm, neck long, curved, length 14.0 μm.
Distribution.
China (Fujian Province, Guizhou Province).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Dasyhelea silvatica Wang, Zhang & Yu, 2014
| Lu, Xue, Duan, Chen, Ning, Yuan, Jiang, Xiao Hong & Hou, Xiao Hui 2020 |
Dasyhelea (Dasyhelea) silvatica
| Wang, Zhang & Yu 2014 |