Desmopachria angulata, Miller, 2022
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publication ID |
https://dx.doi.org/10.3897/zookeys.1136.72744 |
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publication LSID |
lsid:zoobank.org:pub:11C6BBFB-339A-4672-AE66-2CE2B1E6321E |
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persistent identifier |
https://treatment.plazi.org/id/A989B6AB-0A32-5F29-9CBA-0E06B71E3692 |
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treatment provided by |
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scientific name |
Desmopachria angulata |
| status |
sp. nov. |
Desmopachria angulata sp. nov.
Figures 51-53 View Figures 51–71 , 79 View Figures 79, 80
Type locality.
Suriname, Sipaliwini District, Camp 2 on Sipaliwini River, large forest stream, 2°10.937'N 56° 47.235°W.
Diagnosis.
This species is dorsally iridescent. The punctation on the pronotum is very fine and sparse. The punctation on the elytron is dual, with some large and some small and interspersed among the larger ones. The male genitalia are distinctive with the median lobe elongate, slender and distinctly angulate medially with the apex rounded and with a distinct subapical lobe on the ventral margin (Fig. 51 View Figures 51–71 ). The lateral lobe is broad medially with the apex lobate and narrowly rounded with a small, dense series of setae (Fig. 53 View Figures 51–71 ).
Description.
Measurements. TL = 2.0-2.2 mm, GW = 1.5-1.6 mm, PW = 1.1-1.2 mm, HW = 0.4-0.5 mm, EW = 0.4 mm, TL/GW = 1.4-1.5, HW/EW = 1.8-2.0. Body very broad, laterally rounded, lateral margins slightly discontinuous between pronotum and elytron; dorsoventrally compressed.
Coloration. Head and pronotum evenly orange, slightly iridescent. Elytron evenly brownish orange, iridescent. Ventral surface of head, prosternum, head appendages, and pro- and mesolegs yellow, other ventral surfaces and metalegs darker orange, lateral portion of metacoxa iridescent.
Sculpture and structure. Head broad, short; anterior margin of clypeus finely margined with continuous flattened narrow bead; surface of head shiny, punctation extremely fine, evenly distributed; eyes large (HW/EW = 1.8-2.0); antennae short, scape and pedicel relatively large and rounded, flagellomere III long and slender, apically expanded, antennomeres IV-X short and broad, antennomere XI elongate, apically pointed. Pronotum short, lateral margins short, broadly curved with continuous narrow bead; surface shiny, punctation fine, slightly irregular in size, few larger punctures; posterior margin sinuate. Elytron broad, laterally broadly curved; surface shiny, conspicuously punctate, punctures dual with fine and large interspersed. Prosternum extremely short, longitudinally compressed, medially slightly carinate; prosternal process in male very slender anteriorly, with low, indistinct medial tubercle, bifid apically with deep medial pit, in female slender anteriorly, with distinctive, small medial tubercle, apically short and broad, medially slightly carinate, apically acutely pointed. Metaventrite broad and evenly smoothly convex medially, surface shiny, impunctate; metaventrite wings extremely slender. Metacoxa with medial portion short, <1/3 length of metaventrite medially, metacoxal lines sinuate, strongly divergent anteriorly; lateral portion of metacoxa extremely large, anteriorly strongly expanded; surface shiny, impunctate. Metatrochanter very large, subequal to length of ventral margin of metafemur; legs otherwise not noticeably modified. Abdomen with surfaces shiny and smooth, very finely and sparsely punctate.
Male genitalia. Male median lobe in lateral aspect with basal portion broad and rounded, apically long and slender, medially conspicuously bent, with distinctive subapical lobe on ventral surface (Fig. 51 View Figures 51–71 ); in ventral aspect elongate, slender, lateral margins sinuate, subapically broadly and roundly expanded, apex broadly pointed (Fig. 52 View Figures 51–71 ). Lateral lobe broad, ventrally broadly rounded, apically lobate with subapical lobe on lateral surface, apices of lobes with dense fringe of setae (Fig. 53 View Figures 51–71 ).
Sexual dimorphism. Male pro- and mesotarsomeres I-III slightly more broadly expanded and with ventral adhesive setae. Male and female prosternal processes different as in all Desmopachria portmanni group species.
Variation. Some specimens have the dorsal punctation more or less dense than described above. Also, coloration varies in intensity, though the head and pronotum are always paler than the elytra.
Etymology.
This species is named Desmopachria angulata , Latin for angled, for the strongly angulate male median lobe in lateral aspect (Fig. 51 View Figures 51–71 ).
Distribution.
This species is known from Region 6, Guyana and Sipaliwini District, Suriname (Fig. 79 View Figures 79, 80 ).
Type material.
Holotype in NZCS, male labeled, "SURINAME: Sipaliwini District 2°10.973'N, 56°47.235'W, 210m Camp 2, on Sipaliwini River; Short & Kadosoe; large forest stream 28-29.viii.2010; SR10-0828-02A 2010 CI-RAP Survey/ SEMC0913662 KUNHM-ENT [barcode label]/ HOLOTYPE Desmopachria angulata Miller, 2021 [red label with black line border]." Paratypes, 144 total in NZCS and SEMC (from Suriname), CSBD and SEMC (from Guyana), and MSBA (various), each with different barcode labels (Table 1 View Table 1 ) and “… PARATYPE Desmopachria angulata Miller, 2021 [blue label with black line border]; 17 labeled same as holotype; 7 labeled, "GUYANA: Region 6 4°09.241'N, 58°10.627'W, 109 m Upper Berbice, Basecamp 1 puddles along road leg. Short, Salisbury, La Cruz 24.ix.2014; GY14-0924-02A/ …”; 1 labeled same, except, “… 4°09.143'N, 58°11.207'W, 105 m … margins of creek … 22.iv.2014; GY1-0921-03H/ …”; 1 labeled same, except, “… 4°09.289'N, 58°11.717'W, 96 m … side pools of creek … 21.iv.2014; GY1-0921-01B/ …”; 1 labeled same, except, “… 4°09.126'N, 58°12.274'W, 73 m … 3km W. of Basecamp 1; pooled up creek …… [no date]; GY1-0923-01A/ …”; 2 labeled, "GUYANA: Region 6 4°09.136'N, 58°11.365'W, 106 m Upper Berbice, ca 1.1km W of Basecamp 1; stream detrital pools leg. Short, Salisbury, La Cruz 23.ix.2014; GY14-0923-02A/ …”; 4 labeled, "GUYANA: Region 6 4°09.143'N, 58°11.207'W, 105 m Upper Berbice, c. 1km W of Basecamp 1; small sandy stream leg. Short, Salisbury, La Cruz 21.ix.2014; GY14-0921-03A/ …”; 2 labeled same, except, “… side pools of creek … 22.ix.2014; GY14-0921-03G/ …”; 11 labeled, "SURINAME: Sipaliwini District 2°21.776'N, 56°41.861'W, 237 m Camp 3, Wehepai leg. Short & Kadosoe; pooled up detrital creek 3.ix.2010; SR10-0903-01A 2010 CI-RAP Survey/ …”; 1 labeled same, except, “… sandy forest creek 4-6.ix.2010; SR10-0904-01A/ …”; 4 labeled, "SURINAME: Sipaliwini District 2°10.973'N, 56°47.235'W, 210 m Camp 2, on Silpaliwini [sic] River; Short & Kadosoe; small detrital stream 28.viii.2010; SR10-0828-03A 2010 CI-RAP Survey/ …”; 6 labeled same, except, “…Sipaliwini…inselberg… 29-30.viii.2010; SR10-0829-01A …”; 7 labeled same, except, “… sandy forest creek w/detritus; SR10-0831-01B 31.viii.2010 …”; 5 labeled same, except, “… forest creek 31.viii.2010; SR10-0831-01A …”; 9 labeled, "SURINAME: Sipaliwini District N 2.47700°N, 55.62941°W, 275 m Camp 1, Upper Palumeu leg. A Short; Flight Intercept Trap 10-16.iii.2012; SR12-0310-TN1 2012 CI-RAP Survey/ …”; 1 labeled same, except, “… Upper Palumeu River … large detrital pools 10-12.iii.2012; SR12-0310-01A …”; 58 labeled, "SURINAME: Sipaliwini District 2°10.521'N, 56°7.244'W, 228 m on Kutari River; leg. Short & Kadosoe; forested swamp 19.viii.2010; SR10-0819-01A Camp 1; 2010 CI-RAP Survey/ …”; 1 labeled same, except, “… forest stream …SR10-0819-02A…”; 5 labeled, "SURINAME S2005-13 03May2005. Palumeu off Tapanahoni R. just upstream fr S2005-10 N03.36951 W055.43654 Wolfe-Hiwat-class."
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